PIC32MX1XX/2XX 28/36/44 Pin Family Data Sheet PIC32Family Guide

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PIC32MX1XX/2XX 28/36/44-PIN
32-bit Microcontrollers (up to 256 KB Flash and 64 KB SRAM) with
Audio and Graphics Interfaces, USB, and Advanced Analog
Operating Conditions

Timers/Output Compare/Input Capture

• 2.3V to 3.6V, -40ºC to +105ºC, DC to 40 MHz
• 2.3V to 3.6V, -40ºC to +85ºC, DC to 50 MHz

• Five General Purpose Timers:
- Five 16-bit and up to two 32-bit Timers/Counters
• Five Output Compare (OC) modules
• Five Input Capture (IC) modules
• Peripheral Pin Select (PPS) to allow function remap
• Real-Time Clock and Calendar (RTCC) module

Core: 50 MHz/83 DMIPS MIPS32® M4K®
• MIPS16e® mode for up to 40% smaller code size
• Code-efficient (C and Assembly) architecture
• Single-cycle (MAC) 32x16 and two-cycle 32x32 multiply

Communication Interfaces

Clock Management
•
•
•
•
•

• USB 2.0-compliant Full-speed OTG controller
• Two UART modules (12.5 Mbps):
- Supports LIN 2.0 protocols and IrDA® support
• Two 4-wire SPI modules (25 Mbps)
• Two I2C modules (up to 1 Mbaud) with SMBus support
• PPS to allow function remap
• Parallel Master Port (PMP)

0.9% internal oscillator
Programmable PLLs and oscillator clock sources
Fail-Safe Clock Monitor (FSCM)
Independent Watchdog Timer
Fast wake-up and start-up

Power Management
•
•
•
•

Low-power management modes (Sleep and Idle)
Integrated Power-on Reset and Brown-out Reset
0.5 mA/MHz dynamic current (typical)
44 μA IPD current (typical)

Direct Memory Access (DMA)
• Four channels of hardware DMA with automatic data
size detection
• Two additional channels dedicated for USB
• Programmable Cyclic Redundancy Check (CRC)

Audio Interface Features
• Data communication: I2S, LJ, RJ, and DSP modes
• Control interface: SPI and I2C
• Master clock:
- Generation of fractional clock frequencies
- Can be synchronized with USB clock
- Can be tuned in run-time

Input/Output
• 10 mA source/sink on all I/O pins and up to 14 mA on
non-standard VOH
• 5V-tolerant pins
• Selectable open drain, pull-ups, and pull-downs
• External interrupts on all I/O pins

Advanced Analog Features
• ADC Module:
- 10-bit 1.1 Msps rate with one S&H
- Up to 10 analog inputs on 28-pin devices and 13
analog inputs on 44-pin devices
• Flexible and independent ADC trigger sources
• Charge Time Measurement Unit (CTMU):
- Supports mTouch™ capacitive touch sensing
- Provides high-resolution time measurement (1 ns)
- On-chip temperature measurement capability
• Comparators:
- Up to three Analog Comparator modules
- Programmable references with 32 voltage points

Qualification and Class B Support
• AEC-Q100 REVG (Grade 2 -40ºC to +105ºC) planned
• Class B Safety Library, IEC 60730

Debugger Development Support
•
•
•
•

In-circuit and in-application programming
4-wire MIPS® Enhanced JTAG interface
Unlimited program and six complex data breakpoints
IEEE 1149.2-compatible (JTAG) boundary scan

Packages
Type

SOIC

SSOP

SPDIP

QFN

VTLA

TQFP

Pin Count

28

28

28

28

44

36

44

I/O Pins (up to)

21

21

21

21

34

25

34

34

Contact/Lead Pitch

1.27

0.65

0.100''

0.65

0.65

0.50

0.50

0.80

Dimensions

17.90x7.50x2.65

10.2x5.3x2

1.365''x.285''x.135''

6x6x0.9

8x8x0.9

5x5x0.9

6x6x0.9

10x10x1

Note:

44

All dimensions are in millimeters (mm) unless specified.

 2011-2018 Microchip Technology Inc.

DS60001168K-page 1

PIC32MX1XX/2XX 28/36/44-PIN FAMILY

Packages

2

5

3

N

2

Y

4/0

Y

10

Y

21

Y

PIC32MX110F016C

36

16+3

4

24

5/5/5

2

2

5

3

N

2

Y

4/0

Y

12

Y

25

Y

VTLA

Pins

I/O Pins

2

RTCC

5/5/5

CTMU

20

PMP

4

I2C

16+3

SPI/I2S

28

UART

PIC32MX110F016B

SOIC,
SSOP,
SPDIP,
QFN

Device

JTAG

USB On-The-Go (OTG)

Analog Comparators

External Interrupts(3)

Timers(2)/Capture/Compare

Remappable Pins

Data Memory (KB)

Program Memory (KB)(1)

Remappable Peripherals

10-bit 1 Msps ADC (Channels)

PIC32MX1XX 28/36/44-PIN GENERAL PURPOSE FAMILY FEATURES
DMA Channels
(Programmable/Dedicated)

TABLE 1:

PIC32MX110F016D

44

16+3

4

32

5/5/5

2

2

5

3

N

2

Y

4/0

Y

13

Y

35

Y

VTLA,
TQFP,
QFN

PIC32MX120F032B

28

32+3

8

20

5/5/5

2

2

5

3

N

2

Y

4/0

Y

10

Y

21

Y

SOIC,
SSOP,
SPDIP,
QFN

PIC32MX120F032C

36

32+3

8

24

5/5/5

2

2

5

3

N

2

Y

4/0

Y

12

Y

25

Y

VTLA

PIC32MX120F032D

44

32+3

8

32

5/5/5

2

2

5

3

N

2

Y

4/0

Y

13

Y

35

Y

VTLA,
TQFP,
QFN

PIC32MX130F064B

28

64+3

16

20

5/5/5

2

2

5

3

N

2

Y

4/0

Y

10

Y

21

Y

SOIC,
SSOP,
SPDIP,
QFN

PIC32MX130F064C

36

64+3

16

24

5/5/5

2

2

5

3

N

2

Y

4/0

Y

12

Y

25

Y

VTLA

Y

VTLA,
TQFP,
QFN
SOIC,
SSOP,
SPDIP,
QFN

PIC32MX130F064D

44

64+3

16

32

5/5/5

2

2

5

3

N

2

Y

4/0

Y

13

Y

35

PIC32MX150F128B

28

128+3

32

20

5/5/5

2

2

5

3

N

2

Y

4/0

Y

10

Y

21

Y

PIC32MX150F128C

36

128+3

32

24

5/5/5

2

2

5

3

N

2

Y

4/0

Y

12

Y

25

Y

VTLA

PIC32MX150F128D

44

128+3

32

32

5/5/5

2

2

5

3

N

2

Y

4/0

Y

13

Y

35

Y

VTLA,
TQFP,
QFN

PIC32MX130F256B

28

256+3

16

20

5/5/5

2

2

5

3

N

2

Y

4/0

Y

10

Y

21

Y

SSOP,
SPDIP,
QFN

PIC32MX130F256D

44

256+3

16

32

5/5/5

2

2

5

3

N

2

Y

4/0

Y

13

Y

35

Y

VTLA,
TQFP,
QFN

PIC32MX170F256B

28

256+3

64

20

5/5/5

2

2

5

3

N

2

Y

4/0

Y

10

Y

21

Y

SOIC,
SSOP,
SPDIP,
QFN

PIC32MX170F256D

44

256+3

64

32

5/5/5

2

2

5

3

N

2

Y

4/0

Y

13

Y

35

Y

VTLA,
TQFP,
QFN

Note 1:
2:
3:

This device features 3 KB of boot Flash memory.
Four out of five timers are remappable.
Four out of five external interrupts are remappable.

DS60001168K-page 2

 2011-2018 Microchip Technology Inc.

PIC32MX1XX/2XX 28/36/44-PIN FAMILY
PIC32MX2XX 28/36/44-PIN USB FAMILY FEATURES
Program Memory (KB)(1)

Data Memory (KB)

Remappable Pins

Timers(2)/Capture/Compare

UART

SPI/I2S

External Interrupts(3)

Analog Comparators

USB On-The-Go (OTG)

I2C

PMP

DMA Channels
(Programmable/Dedicated)

CTMU

10-bit 1 Msps ADC (Channels)

RTCC

I/O Pins

JTAG

PIC32MX210F016B

28

16+3

4

19

5/5/5

2

2

5

3

Y

2

Y

4/2

Y

9

Y

19

Y

PIC32MX210F016C

36

16+3

4

23

5/5/5

2

2

5

3

Y

2

Y

4/2

Y

12

Y

25

Y

PIC32MX210F016D

44

16+3

4

31

5/5/5

2

2

5

3

Y

2

Y

4/2

Y

13

Y

33

Y

PIC32MX220F032B

28

32+3

8

19

5/5/5

2

2

5

3

Y

2

Y

4/2

Y

9

Y

19

Y

PIC32MX220F032C

36

32+3

8

23

5/5/5

2

2

5

3

Y

2

Y

4/2

Y

12

Y

23

Y

PIC32MX220F032D

44

32+3

8

31

5/5/5

2

2

5

3

Y

2

Y

4/2

Y

13

Y

33

Y

PIC32MX230F064B

28

64+3

16

19

5/5/5

2

2

5

3

Y

2

Y

4/2

Y

9

Y

19

Y

PIC32MX230F064C

36

64+3

16

23

5/5/5

2

2

5

3

Y

2

Y

4/2

Y

12

Y

23

Y

PIC32MX230F064D

44

64+3

16

31

5/5/5

2

2

5

3

Y

2

Y

4/2

Y

13

Y

33

Y

PIC32MX250F128B

28

128+3

32

19

5/5/5

2

2

5

3

Y

2

Y

4/2

Y

9

Y

19

Y

PIC32MX250F128C

36

128+3

32

23

5/5/5

2

2

5

3

Y

2

Y

4/2

Y

12

Y

23

Y

PIC32MX250F128D

44

128+3

32

31

5/5/5

2

2

5

3

Y

2

Y

4/2

Y

13

Y

33

Y

PIC32MX230F256B

28

256+3

16

20

5/5/5

2

2

5

3

Y

2

Y

4/2

Y

9

Y

19

Y

PIC32MX230F256D

44

256+3

16

31

5/5/5

2

2

5

3

Y

2

Y

4/2

Y

13

Y

33

Y

PIC32MX270F256B

28

256+3

64

19

5/5/5

2

2

5

3

Y

2

Y

4/2

Y

9

Y

19

Y

PIC32MX270F256D

44

256+3

64

31

5/5/5

2

2

5

3

Y

2

Y

4/2

Y

13

Y

33

Y

Device

Pins

Remappable Peripherals

Note 1:
2:
3:

Packages

TABLE 2:

SOIC,
SSOP,
SPDIP,
QFN
VTLA
VTLA,
TQFP,
QFN
SOIC,
SSOP,
SPDIP,
QFN
VTLA
VTLA,
TQFP,
QFN
SOIC,
SSOP,
SPDIP,
QFN
VTLA
VTLA,
TQFP,
QFN
SOIC,
SSOP,
SPDIP,
QFN
VTLA
VTLA,
TQFP,
QFN
SSOP,
SPDIP,
QFN
VTLA,
TQFP,
QFN
SOIC,
SSOP,
SPDIP,
QFN
VTLA,
TQFP,
QFN

This device features 3 KB of boot Flash memory.
Four out of five timers are remappable.
Four out of five external interrupts are remappable.

 2011-2018 Microchip Technology Inc.

DS60001168K-page 3

PIC32MX1XX/2XX 28/36/44-PIN FAMILY
Pin Diagrams
TABLE 3:

PIN NAMES FOR 28-PIN GENERAL PURPOSE DEVICES

28-PIN SOIC, SPDIP, SSOP (TOP VIEW)(1,2,3)
1

1

28

SSOP

28

1

SOIC

28

SPDIP

PIC32MX110F016B
PIC32MX120F032B
PIC32MX130F064B
PIC32MX130F256B
PIC32MX150F128B
PIC32MX170F256B

Pin #
1
2

Full Pin Name

Pin #

Full Pin Name

MCLR

15

PGEC3/RPB6/PMD6/RB6

VREF+/CVREF+/AN0/C3INC/RPA0/CTED1/RA0

16

TDI/RPB7/CTED3/PMD5/INT0/RB7

3

VREF-/CVREF-/AN1/RPA1/CTED2/RA1

17

TCK/RPB8/SCL1/CTED10/PMD4/RB8

4

PGED1/AN2/C1IND/C2INB/C3IND/RPB0/RB0

18

TDO/RPB9/SDA1/CTED4/PMD3/RB9

5

PGEC1/AN3/C1INC/C2INA/RPB1/CTED12/RB1

19

VSS

6

AN4/C1INB/C2IND/RPB2/SDA2/CTED13/RB2

20

VCAP

7

AN5/C1INA/C2INC/RTCC/RPB3/SCL2/RB3

21

PGED2/RPB10/CTED11/PMD2/RB10

8

VSS

22

PGEC2/TMS/RPB11/PMD1/RB11

9

OSC1/CLKI/RPA2/RA2

23

AN12/PMD0/RB12

10

OSC2/CLKO/RPA3/PMA0/RA3

24

AN11/RPB13/CTPLS/PMRD/RB13

11

SOSCI/RPB4/RB4

25

CVREFOUT/AN10/C3INB/RPB14/SCK1/CTED5/PMWR/RB14

12

SOSCO/RPA4/T1CK/CTED9/PMA1/RA4

26

AN9/C3INA/RPB15/SCK2/CTED6/PMCS1/RB15

13

VDD

27

AVSS

28

AVDD

14
Note

PGED3/RPB5/PMD7/RB5
1:
2:
3:

The RPn pins can be used by remappable peripherals. See Table 1 for the available peripherals and Section 11.3 “Peripheral Pin
Select” for restrictions.
Every I/O port pin (RAx-RCx) can be used as a change notification pin (CNAx-CNCx). See Section 11.0 “I/O Ports” for more information.
Shaded pins are 5V tolerant.

DS60001168K-page 4

 2011-2018 Microchip Technology Inc.

PIC32MX1XX/2XX 28/36/44-PIN FAMILY
TABLE 4:

PIN NAMES FOR 28-PIN USB DEVICES

28-PIN SOIC, SPDIP, SSOP (TOP VIEW)(1,2,3)
1

1

28

SSOP

28

1

SOIC

28

SPDIP

PIC32MX210F016B
PIC32MX220F032B
PIC32MX230F064B
PIC32MX230F256B
PIC32MX250F128B
PIC32MX270F256B

Pin #

Full Pin Name

Pin #

Full Pin Name

1

MCLR

15

VBUS

2

PGED3/VREF+/CVREF+/AN0/C3INC/RPA0/CTED1/PMD7/RA0

16

TDI/RPB7/CTED3/PMD5/INT0/RB7

3

PGEC3/VREF-/CVREF-/AN1/RPA1/CTED2/PMD6/RA1

17

TCK/RPB8/SCL1/CTED10/PMD4/RB8

4

PGED1/AN2/C1IND/C2INB/C3IND/RPB0/PMD0/RB0

18

TDO/RPB9/SDA1/CTED4/PMD3/RB9

5

PGEC1/AN3/C1INC/C2INA/RPB1/CTED12/PMD1/RB1

19

VSS

6

AN4/C1INB/C2IND/RPB2/SDA2/CTED13/PMD2/RB2

20

VCAP

7

AN5/C1INA/C2INC/RTCC/RPB3/SCL2/PMWR/RB3

21

PGED2/RPB10/D+/CTED11/RB10

8

VSS

22

PGEC2/RPB11/D-/RB11

9

OSC1/CLKI/RPA2/RA2

23

VUSB3V3

10

OSC2/CLKO/RPA3/PMA0/RA3

24

AN11/RPB13/CTPLS/PMRD/RB13

11

SOSCI/RPB4/RB4

25

CVREFOUT/AN10/C3INB/RPB14/VBUSON/SCK1/CTED5/RB14

12

AN9/C3INA/RPB15/SCK2/CTED6/PMCS1/RB15

SOSCO/RPA4/T1CK/CTED9/PMA1/RA4

26

13

VDD

27

AVSS

14

TMS/RPB5/USBID/RB5

28

AVDD

Note

1:
2:
3:

The RPn pins can be used by remappable peripherals. See Table 1 for the available peripherals and Section 11.3 “Peripheral Pin
Select” for restrictions.
Every I/O port pin (RAx-RCx) can be used as a change notification pin (CNAx-CNCx). See Section 11.0 “I/O Ports” for more information.
Shaded pins are 5V tolerant.

 2011-2018 Microchip Technology Inc.

DS60001168K-page 5

PIC32MX1XX/2XX 28/36/44-PIN FAMILY
TABLE 5:

PIN NAMES FOR 28-PIN GENERAL PURPOSE DEVICES

28-PIN QFN (TOP VIEW)(1,2,3.4)

PIC32MX110F016B
PIC32MX120F032B
PIC32MX130F064B
PIC32MX130F256B
PIC32MX150F128B
PIC32MX170F256B
Pin #

Full Pin Name

28

1

Pin #

Full Pin Name

1

PGED1/AN2/C1IND/C2INB/C3IND/RPB0/RB0

15

TDO/RPB9/SDA1/CTED4/PMD3/RB9

2

PGEC1/AN3/C1INC/C2INA/RPB1/CTED12/RB1

16

VSS

3

AN4/C1INB/C2IND/RPB2/SDA2/CTED13/RB2

17

VCAP

4

AN5/C1INA/C2INC/RTCC/RPB3/SCL2/RB3

18

PGED2/RPB10/CTED11/PMD2/RB10

5

VSS

19

PGEC2/TMS/RPB11/PMD1/RB11

6

OSC1/CLKI/RPA2/RA2

20

AN12/PMD0/RB12

7

OSC2/CLKO/RPA3/PMA0/RA3

21

AN11/RPB13/CTPLS/PMRD/RB13

8

SOSCI/RPB4/RB4

22

CVREFOUT/AN10/C3INB/RPB14/SCK1/CTED5/PMWR/RB14

9

SOSCO/RPA4/T1CK/CTED9/PMA1/RA4

23

AN9/C3INA/RPB15/SCK2/CTED6/PMCS1/RB15

10

VDD

24

AVSS

11

PGED3/RPB5/PMD7/RB5

25

AVDD

12

PGEC3/RPB6/PMD6/RB6

26

MCLR

13

TDI/RPB7/CTED3/PMD5/INT0/RB7

27

VREF+/CVREF+/AN0/C3INC/RPA0/CTED1/RA0

14

TCK/RPB8/SCL1/CTED10/PMD4/RB8

28

VREF-/CVREF-/AN1/RPA1/CTED2/RA1

Note

1:
2:
3:
4:

The RPn pins can be used by remappable peripherals. See Table 1 for the available peripherals and Section 11.3 “Peripheral Pin
Select” for restrictions.
Every I/O port pin (RAx-RCx) can be used as a change notification pin (CNAx-CNCx). See Section 11.0 “I/O Ports” for more information.
The metal plane at the bottom of the device is not connected to any pins and is recommended to be connected to VSS externally.
Shaded pins are 5V tolerant.

DS60001168K-page 6

 2011-2018 Microchip Technology Inc.

PIC32MX1XX/2XX 28/36/44-PIN FAMILY
TABLE 6:

PIN NAMES FOR 28-PIN USB DEVICES

28-PIN QFN (TOP VIEW)(1,2,3,4)

PIC32MX210F016B
PIC32MX220F032B
PIC32MX230F064B
PIC32MX230F256B
PIC32MX250F128B
PIC32MX270F256B
Pin #

Full Pin Name

28

1

Pin #

Full Pin Name

1

PGED1/AN2/C1IND/C2INB/C3IND/RPB0/PMD0/RB0

15

TDO/RPB9/SDA1/CTED4/PMD3/RB9

2

PGEC1/AN3/C1INC/C2INA/RPB1/CTED12/PMD1/RB1

16

VSS

3

AN4/C1INB/C2IND/RPB2/SDA2/CTED13/PMD2/RB2

17

VCAP

4

AN5/C1INA/C2INC/RTCC/RPB3/SCL2/PMWR/RB3

18

PGED2/RPB10/D+/CTED11/RB10

5

VSS

19

PGEC2/RPB11/D-/RB11

6

OSC1/CLKI/RPA2/RA2

20

VUSB3V3

7

OSC2/CLKO/RPA3/PMA0/RA3

21

AN11/RPB13/CTPLS/PMRD/RB13

8

SOSCI/RPB4/RB4

22

CVREFOUT/AN10/C3INB/RPB14/VBUSON/SCK1/CTED5/RB14

9

SOSCO/RPA4/T1CK/CTED9/PMA1/RA4

23

AN9/C3INA/RPB15/SCK2/CTED6/PMCS1/RB15

10

VDD

24

AVSS

11

TMS/RPB5/USBID/RB5

25

AVDD

12

VBUS

26

MCLR

13

TDI/RPB7/CTED3/PMD5/INT0/RB7

27

PGED3/VREF+/CVREF+/AN0/C3INC/RPA0/CTED1/PMD7/RA0

14

TCK/RPB8/SCL1/CTED10/PMD4/RB8

28

PGEC3/VREF-/CVREF-/AN1/RPA1/CTED2/PMD6/RA1

Note

1:
2:
3:
4:

The RPn pins can be used by remappable peripherals. See Table 1 for the available peripherals and Section 11.3 “Peripheral Pin
Select” for restrictions.
Every I/O port pin (RAx-RCx) can be used as a change notification pin (CNAx-CNCx). See Section 11.0 “I/O Ports” for more information.
The metal plane at the bottom of the device is not connected to any pins and is recommended to be connected to VSS externally.
Shaded pins are 5V tolerant.

 2011-2018 Microchip Technology Inc.

DS60001168K-page 7

PIC32MX1XX/2XX 28/36/44-PIN FAMILY
TABLE 7:

PIN NAMES FOR 36-PIN GENERAL PURPOSE DEVICES

36-PIN VTLA (BOTTOM VIEW)(1,2,3,5)

PIC32MX110F016C
PIC32MX120F032C
PIC32MX130F064C
PIC32MX150F128C
1
36
Pin #

Full Pin Name

Pin #

Full Pin Name

1

AN4/C1INB/C2IND/RPB2/SDA2/CTED13/RB2

19

2

AN5/C1INA/C2INC/RTCC/RPB3/SCL2/RB3

20

RPC9/CTED7/RC9

3

PGED4(4)/AN6/RPC0/RC0

21

VSS

4

PGEC4(4)/AN7/RPC1/RC1

22

VCAP

5

VDD

23

VDD

6

VSS

24

PGED2/RPB10/CTED11/PMD2/RB10

7

OSC1/CLKI/RPA2/RA2

25

PGEC2/TMS/RPB11/PMD1/RB11

8

OSC2/CLKO/RPA3/PMA0/RA3

26

AN12/PMD0/RB12

TDO/RPB9/SDA1/CTED4/PMD3/RB9

9

SOSCI/RPB4/RB4

27

AN11/RPB13/CTPLS/PMRD/RB13

10

SOSCO/RPA4/T1CK/CTED9/PMA1/RA4

28

CVREFOUT/AN10/C3INB/RPB14/SCK1/CTED5/PMWR/RB14

11

RPC3/RC3

29

AN9/C3INA/RPB15/SCK2/CTED6/PMCS1/RB15

12

VSS

30

AVSS

13

VDD

31

AVDD

14

VDD

32

MCLR

15

PGED3/RPB5/PMD7/RB5

33

VREF+/CVREF+/AN0/C3INC/RPA0/CTED1/RA0

16

PGEC3/RPB6/PMD6/RB6

34

VREF-/CVREF-/AN1/RPA1/CTED2/RA1

17

TDI/RPB7/CTED3/PMD5/INT0/RB7

35

PGED1/AN2/C1IND/C2INB/C3IND/RPB0/RB0

18

TCK/RPB8/SCL1/CTED10/PMD4/RB8

36

PGEC1/AN3/C1INC/C2INA/RPB1/CTED12/RB1

Note

1:
2:
3:
4:
5:

The RPn pins can be used by remappable peripherals. See Table 1 for the available peripherals and Section 11.3 “Peripheral Pin
Select” for restrictions.
Every I/O port pin (RAx-RCx) can be used as a change notification pin (CNAx-CNCx). See Section 11.0 “I/O Ports” for more information.
The metal plane at the bottom of the device is not connected to any pins and is recommended to be connected to VSS externally.
This pin function is not available on PIC32MX110F016C and PIC32MX120F032C devices.
Shaded pins are 5V tolerant.

DS60001168K-page 8

 2011-2018 Microchip Technology Inc.

PIC32MX1XX/2XX 28/36/44-PIN FAMILY
TABLE 8:

PIN NAMES FOR 36-PIN USB DEVICES

36-PIN VTLA (BOTTOM VIEW)(1,2,3,5)

PIC32MX210F016C
PIC32MX220F032C
PIC32MX230F064C
PIC32MX250F128C
1
36
Pin #

Full Pin Name

Pin #

Full Pin Name

1

AN4/C1INB/C2IND/RPB2/SDA2/CTED13/PMD2/RB2

19

2

AN5/C1INA/C2INC/RTCC/RPB3/SCL2/PMWR/RB3

20

RPC9/CTED7/RC9

3

PGED4(4)/AN6/RPC0/RC0

21

VSS

4

PGEC4(4)/AN7/RPC1/RC1

22

VCAP

5

VDD

23

VDD

6

VSS

24

PGED2/RPB10/D+/CTED11/RB10

7

OSC1/CLKI/RPA2/RA2

25

PGEC2/RPB11/D-/RB11

8

OSC2/CLKO/RPA3/PMA0/RA3

26

VUSB3V3

TDO/RPB9/SDA1/CTED4/PMD3/RB9

9

SOSCI/RPB4/RB4

27

AN11/RPB13/CTPLS/PMRD/RB13

10

SOSCO/RPA4/T1CK/CTED9/PMA1/RA4

28

CVREFOUT/AN10/C3INB/RPB14/VBUSON/SCK1/CTED5/RB14

11

AN12/RPC3/RC3

29

AN9/C3INA/RPB15/SCK2/CTED6/PMCS1/RB15

12

VSS

30

AVSS

13

VDD

31

AVDD

14

VDD

32

MCLR

15

TMS/RPB5/USBID/RB5

33

PGED3/VREF+/CVREF+/AN0/C3INC/RPA0/CTED1/PMD7/RA0

16

VBUS

34

PGEC3/VREF-/CVREF-/AN1/RPA1/CTED2/PMD6/RA1

17

TDI/RPB7/CTED3/PMD5/INT0/RB7

35

PGED1/AN2/C1IND/C2INB/C3IND/RPB0/PMD0/RB0

18

TCK/RPB8/SCL1/CTED10/PMD4/RB8

36

PGEC1/AN3/C1INC/C2INA/RPB1/CTED12/PMD1/RB1

Note

1:
2:
3:
4:
5:

The RPn pins can be used by remappable peripherals. See Table 1 for the available peripherals and Section 11.3 “Peripheral Pin
Select” for restrictions.
Every I/O port pin (RAx-RCx) can be used as a change notification pin (CNAx-CNCx). See Section 11.0 “I/O Ports” for more information.
The metal plane at the bottom of the device is not connected to any pins and is recommended to be connected to VSS externally.
This pin function is not available on PIC32MX210F016C and PIC32MX120F032C devices.
Shaded pins are 5V tolerant.

 2011-2018 Microchip Technology Inc.

DS60001168K-page 9

PIC32MX1XX/2XX 28/36/44-PIN FAMILY
TABLE 9:

PIN NAMES FOR 44-PIN GENERAL PURPOSE DEVICES

44-PIN QFN (TOP VIEW)(1,2,3,5)

PIC32MX110F016D
PIC32MX120F032D
PIC32MX130F064D
PIC32MX130F256D
PIC32MX150F128D
PIC32MX170F256D
44
Pin #

Full Pin Name

1

Pin #

Full Pin Name

1

RPB9/SDA1/CTED4/PMD3/RB9

23

AN4/C1INB/C2IND/RPB2/SDA2/CTED13/RB2

2

RPC6/PMA1/RC6

24

AN5/C1INA/C2INC/RTCC/RPB3/SCL2/RB3

3

RPC7/PMA0/RC7

25

AN6/RPC0/RC0

4

RPC8/PMA5/RC8

26

AN7/RPC1/RC1

5

RPC9/CTED7/PMA6/RC9

27

AN8/RPC2/PMA2/RC2

6

VSS

28

VDD

7

VCAP

29

VSS

8

PGED2/RPB10/CTED11/PMD2/RB10

30

OSC1/CLKI/RPA2/RA2
OSC2/CLKO/RPA3/RA3

9

PGEC2/RPB11/PMD1/RB11

31

10

AN12/PMD0/RB12

32

TDO/RPA8/PMA8/RA8

11

AN11/RPB13/CTPLS/PMRD/RB13

33

SOSCI/RPB4/RB4

12

PGED4(4)/TMS/PMA10/RA10

34

SOSCO/RPA4/T1CK/CTED9/RA4

13

PGEC4(4)

35

TDI/RPA9/PMA9/RA9

14

CVREFOUT/AN10/C3INB/RPB14/SCK1/CTED5/PMWR/RB14

36

RPC3/RC3

15

AN9/C3INA/RPB15/SCK2/CTED6/PMCS1/RB15

37

RPC4/PMA4/RC4

16

AVSS

38

RPC5/PMA3/RC5

17

AVDD

39

VSS

18

MCLR

40

VDD

19

VREF+/CVREF+/AN0/C3INC/RPA0/CTED1/RA0

41

PGED3/RPB5/PMD7/RB5

20

VREF-/CVREF-/AN1/RPA1/CTED2/RA1

42

PGEC3/RPB6/PMD6/RB6

21

PGED1/AN2/C1IND/C2INB/C3IND/RPB0/RB0

43

RPB7/CTED3/PMD5/INT0/RB7

22

PGEC1/AN3/C1INC/C2INA/RPB1/CTED12/RB1

44

RPB8/SCL1/CTED10/PMD4/RB8

Note

/TCK/CTED8/PMA7/RA7

1:
2:
3:
4:
5:

The RPn pins can be used by remappable peripherals. See Table 1 for the available peripherals and Section 11.3 “Peripheral Pin
Select” for restrictions.
Every I/O port pin (RAx-RCx) can be used as a change notification pin (CNAx-CNCx). See Section 11.0 “I/O Ports” for more information.
The metal plane at the bottom of the device is not connected to any pins and is recommended to be connected to VSS externally.
This pin function is not available on PIC32MX110F016D and PIC32MX120F032D devices.
Shaded pins are 5V tolerant.

DS60001168K-page 10

 2011-2018 Microchip Technology Inc.

PIC32MX1XX/2XX 28/36/44-PIN FAMILY
TABLE 10:

PIN NAMES FOR 44-PIN USB DEVICES

44-PIN QFN (TOP VIEW)(1,2,3,5)

PIC32MX210F016D
PIC32MX220F032D
PIC32MX230F064D
PIC32MX230F256D
PIC32MX250F128D
PIC32MX270F256D
44
Pin #
1
2

Full Pin Name

Pin #

1
Full Pin Name

RPB9/SDA1/CTED4/PMD3/RB9

23

AN4/C1INB/C2IND/RPB2/SDA2/CTED13/PMD2/RB2

RPC6/PMA1/RC6

24

AN5/C1INA/C2INC/RTCC/RPB3/SCL2/PMWR/RB3

3

RPC7/PMA0/RC7

25

AN6/RPC0/RC0

4

RPC8/PMA5/RC8

26

AN7/RPC1/RC1

5

RPC9/CTED7/PMA6/RC9

27

AN8/RPC2/PMA2/RC2

6

VSS

28

VDD

7

VCAP

29

VSS

8

PGED2/RPB10/D+/CTED11/RB10

30

OSC1/CLKI/RPA2/RA2

9

PGEC2/RPB11/D-/RB11

31

OSC2/CLKO/RPA3/RA3

10

VUSB3V3

32

TDO/RPA8/PMA8/RA8

11

AN11/RPB13/CTPLS/PMRD/RB13

33

SOSCI/RPB4/RB4

12

PGED4/TMS/PMA10/RA10

34

SOSCO/RPA4/T1CK/CTED9/RA4

13

PGEC4/TCK/CTED8/PMA7/RA7

35

TDI/RPA9/PMA9/RA9

14

CVREFOUT/AN10/C3INB/RPB14/VBUSON/SCK1/CTED5/RB14

36

AN12/RPC3/RC3

15

AN9/C3INA/RPB15/SCK2/CTED6/PMCS1/RB15

37

RPC4/PMA4/RC4

16

AVSS

38

RPC5/PMA3/RC5

17

AVDD

39

VSS

18

MCLR

40

VDD

19

PGED3/VREF+/CVREF+/AN0/C3INC/RPA0/CTED1/PMD7/RA0

41

RPB5/USBID/RB5

20

PGEC3/VREF-/CVREF-/AN1/RPA1/CTED2/PMD6/RA1

42

VBUS

21

PGED1/AN2/C1IND/C2INB/C3IND/RPB0/PMD0/RB0

43

RPB7/CTED3/PMD5/INT0/RB7

22

PGEC1/AN3/C1INC/C2INA/RPB1/CTED12/PMD1/RB1

44

RPB8/SCL1/CTED10/PMD4/RB8

Note

1:
2:
3:
4:
5:

The RPn pins can be used by remappable peripherals. See Table 1 for the available peripherals and Section 11.3 “Peripheral Pin
Select” for restrictions.
Every I/O port pin (RAx-RCx) can be used as a change notification pin (CNAx-CNCx). See Section 11.0 “I/O Ports” for more information.
The metal plane at the bottom of the device is not connected to any pins and is recommended to be connected to VSS externally.
This pin function is not available on PIC32MX110F016D and PIC32MX120F032D devices.
Shaded pins are 5V tolerant.

 2011-2018 Microchip Technology Inc.

DS60001168K-page 11

PIC32MX1XX/2XX 28/36/44-PIN FAMILY
TABLE 11:

PIN NAMES FOR 44-PIN GENERAL PURPOSE DEVICES

44-PIN TQFP (TOP VIEW)(1,2,3,5)

PIC32MX110F016D
PIC32MX120F032D
PIC32MX130F064D
PIC32MX130F256D
PIC32MX150F128D
PIC32MX170F256D
44
1
Pin #
1

Full Pin Name

Pin #

Full Pin Name

RPB9/SDA1/CTED4/PMD3/RB9

23

AN4/C1INB/C2IND/RPB2/SDA2/CTED13/RB2

2

RPC6/PMA1/RC6

24

AN5/C1INA/C2INC/RTCC/RPB3/SCL2/RB3

3

RPC7/PMA0/RC7

25

AN6/RPC0/RC0

4

RPC8/PMA5/RC8

26

AN7/RPC1/RC1

5

RPC9/CTED7/PMA6/RC9

27

AN8/RPC2/PMA2/RC2

6

VSS

28

VDD

7

VCAP

29

VSS

8

PGED2/RPB10/CTED11/PMD2/RB10

30

OSC1/CLKI/RPA2/RA2

9

PGEC2/RPB11/PMD1/RB11

31

OSC2/CLKO/RPA3/RA3

10

AN12/PMD0/RB12

32

TDO/RPA8/PMA8/RA8

11

AN11/RPB13/CTPLS/PMRD/RB13

33

SOSCI/RPB4/RB4

12

PGED4(4)/TMS/PMA10/RA10

34

SOSCO/RPA4/T1CK/CTED9/RA4

13

PGEC4(4)/TCK/CTED8/PMA7/RA7

35

TDI/RPA9/PMA9/RA9

14

CVREFOUT/AN10/C3INB/RPB14/SCK1/CTED5/PMWR/RB14

36

RPC3/RC3

15

AN9/C3INA/RPB15/SCK2/CTED6/PMCS1/RB15

37

RPC4/PMA4/RC4

16

AVSS

38

RPC5/PMA3/RC5

17

AVDD

39

VSS

18

MCLR

40

VDD

19

VREF+/CVREF+/AN0/C3INC/RPA0/CTED1/RA0

41

PGED3/RPB5/PMD7/RB5

20

VREF-/CVREF-/AN1/RPA1/CTED2/RA1

42

PGEC3/RPB6/PMD6/RB6

21

PGED1/AN2/C1IND/C2INB/C3IND/RPB0/RB0

43

RPB7/CTED3/PMD5/INT0/RB7

PGEC1/AN3/C1INC/C2INA/RPB1/CTED12/RB1

44

RPB8/SCL1/CTED10/PMD4/RB8

22
Note

1:
2:
3:
4:
5:

The RPn pins can be used by remappable peripherals. See Table 1 for the available peripherals and Section 11.3 “Peripheral Pin
Select” for restrictions.
Every I/O port pin (RAx-RCx) can be used as a change notification pin (CNAx-CNCx). See Section 11.0 “I/O Ports” for more information.
The metal plane at the bottom of the device is not connected to any pins and is recommended to be connected to VSS externally.
This pin function is not available on PIC32MX110F016D and PIC32MX120F032D devices.
Shaded pins are 5V tolerant.

DS60001168K-page 12

 2011-2018 Microchip Technology Inc.

PIC32MX1XX/2XX 28/36/44-PIN FAMILY
TABLE 12:

PIN NAMES FOR 44-PIN USB DEVICES

44-PIN TQFP (TOP VIEW)(1,2,3,5)

PIC32MX210F016D
PIC32MX220F032D
PIC32MX230F064D
PIC32MX230F256D
PIC32MX250F128D
PIC32MX270F256D
44
1
Pin #

Full Pin Name

Pin #

Full Pin Name

1

RPB9/SDA1/CTED4/PMD3/RB9

23

AN4/C1INB/C2IND/RPB2/SDA2/CTED13/PMD2/RB2

2

RPC6/PMA1/RC6

24

AN5/C1INA/C2INC/RTCC/RPB3/SCL2/PMWR/RB3

3

RPC7/PMA0/RC7

25

AN6/RPC0/RC0

4

RPC8/PMA5/RC8

26

AN7/RPC1/RC1

5

RPC9/CTED7/PMA6/RC9

27

AN8/RPC2/PMA2/RC2

6

VSS

28

VDD

7

VCAP

29

VSS

8

PGED2/RPB10/D+/CTED11/RB10

30

OSC1/CLKI/RPA2/RA2
OSC2/CLKO/RPA3/RA3

9

PGEC2/RPB11/D-/RB11

31

10

VUSB3V3

32

TDO/RPA8/PMA8/RA8

11

AN11/RPB13/CTPLS/PMRD/RB13

33

SOSCI/RPB4/RB4

12

PGED4(4)/TMS/PMA10/RA10

34

SOSCO/RPA4/T1CK/CTED9/RA4

13

PGEC4 /TCK/CTED8/PMA7/RA7

35

TDI/RPA9/PMA9/RA9

14

CVREFOUT/AN10/C3INB/RPB14/VBUSON/SCK1/CTED5/RB14

36

AN12/RPC3/RC3

15

AN9/C3INA/RPB15/SCK2/CTED6/PMCS1/RB15

37

RPC4/PMA4/RC4

16

AVSS

38

RPC5/PMA3/RC5

17

AVDD

39

VSS

18

MCLR

40

VDD

19

PGED3/VREF+/CVREF+/AN0/C3INC/RPA0/CTED1/PMD7/RA0

41

RPB5/USBID/RB5

20

PGEC3/VREF-/CVREF-/AN1/RPA1/CTED2/PMD6/RA1

42

VBUS

21

PGED1/AN2/C1IND/C2INB/C3IND/RPB0/PMD0/RB0

43

RPB7/CTED3/PMD5/INT0/RB7

22

PGEC1/AN3/C1INC/C2INA/RPB1/CTED12/PMD1/RB1

44

RPB8/SCL1/CTED10/PMD4/RB8

Note

(4)

1:
2:
3:
4:
5:

The RPn pins can be used by remappable peripherals. See Table 1 for the available peripherals and Section 11.3 “Peripheral Pin
Select” for restrictions.
Every I/O port pin (RAx-RCx) can be used as a change notification pin (CNAx-CNCx). See Section 11.0 “I/O Ports” for more information.
The metal plane at the bottom of the device is not connected to any pins and is recommended to be connected to VSS externally.
This pin function is not available on PIC32MX210F016D and PIC32MX220F032D devices.
Shaded pins are 5V tolerant.

 2011-2018 Microchip Technology Inc.

DS60001168K-page 13

PIC32MX1XX/2XX 28/36/44-PIN FAMILY
TABLE 13:

PIN NAMES FOR 44-PIN GENERAL PURPOSE DEVICES

44-PIN VTLA (BOTTOM VIEW)(1,2,3,5)

PIC32MX110F016D
PIC32MX120F032D
PC32MX130F064D
PIC32MX130F256D
PIC32MX150F128D
PIC32MX170F256D
1
44

Pin #

Full Pin Name

Pin #

Full Pin Name

1

RPB9/SDA1/CTED4/PMD3/RB9

23

AN4/C1INB/C2IND/RPB2/SDA2/CTED13/RB2

2

RPC6/PMA1/RC6

24

AN5/C1INA/C2INC/RTCC/RPB3/SCL2/RB3

3

RPC7/PMA0/RC7

25

AN6/RPC0/RC0

4

RPC8/PMA5/RC8

26

AN7/RPC1/RC1

5

RPC9/CTED7/PMA6/RC9

27

AN8/RPC2/PMA2/RC2

6

VSS

28

VDD

7

VCAP

29

VSS

8

PGED2/RPB10/CTED11/PMD2/RB10

30

OSC1/CLKI/RPA2/RA2
OSC2/CLKO/RPA3/RA3

9

PGEC2/RPB11/PMD1/RB11

31

10

AN12/PMD0/RB12

32

TDO/RPA8/PMA8/RA8

11

AN11/RPB13/CTPLS/PMRD/RB13

33

SOSCI/RPB4/RB4

12

PGED4(4)/TMS/PMA10/RA10

34

SOSCO/RPA4/T1CK/CTED9/RA4

13

PGEC4(4)/TCK/CTED8/PMA7/RA7

35

TDI/RPA9/PMA9/RA9

14

CVREFOUT/AN10/C3INB/RPB14/SCK1/CTED5/PMWR/RB14

36

RPC3/RC3

15

AN9/C3INA/RPB15/SCK2/CTED6/PMCS1/RB15

37

RPC4/PMA4/RC4

16

AVSS

38

RPC5/PMA3/RC5

17

AVDD

39

VSS

18

MCLR

40

VDD

19

VREF+/CVREF+/AN0/C3INC/RPA0/CTED1/RA0

41

PGED3/RPB5/PMD7/RB5

20

VREF-/CVREF-/AN1/RPA1/CTED2/RA1

42

PGEC3/RPB6/PMD6/RB6

21

PGED1/AN2/C1IND/C2INB/C3IND/RPB0/RB0

43

RPB7/CTED3/PMD5/INT0/RB7

22

PGEC1/AN3/C1INC/C2INA/RPB1/CTED12/RB1

44

RPB8/SCL1/CTED10/PMD4/RB8

Note

1:
2:
3:
4:
5:

The RPn pins can be used by remappable peripherals. See Table 1 for the available peripherals and Section 11.3 “Peripheral Pin
Select” for restrictions.
Every I/O port pin (RAx-RCx) can be used as a change notification pin (CNAx-CNCx). See Section 11.0 “I/O Ports” for more information.
The metal plane at the bottom of the device is not connected to any pins and is recommended to be connected to VSS externally.
This pin function is not available on PIC32MX110F016D and PIC32MX120F032D devices.
Shaded pins are 5V tolerant.

DS60001168K-page 14

 2011-2018 Microchip Technology Inc.

PIC32MX1XX/2XX 28/36/44-PIN FAMILY
TABLE 14:

PIN NAMES FOR 44-PIN USB DEVICES

44-PIN VTLA (BOTTOM VIEW)(1,2,3,5)

PIC32MX210F016D
PIC32MX220F032D
PIC32MX230F064D
PIC32MX230F256D
PIC32MX250F128D
PIC32MX270F256D

44
Pin #

Full Pin Name

Pin #

Full Pin Name

1

RPB9/SDA1/CTED4/PMD3/RB9

23

AN4/C1INB/C2IND/RPB2/SDA2/CTED13/PMD2/RB2

2

RPC6/PMA1/RC6

24

AN5/C1INA/C2INC/RTCC/RPB3/SCL2/PMWR/RB3

3

RPC7/PMA0/RC7

25

AN6/RPC0/RC0

4

RPC8/PMA5/RC8

26

AN7/RPC1/RC1

5

RPC9/CTED7/PMA6/RC9

27

AN8/RPC2/PMA2/RC2

6

VSS

28

VDD

7

VCAP

29

VSS

8

PGED2/RPB10/D+/CTED11/RB10

30

OSC1/CLKI/RPA2/RA2
OSC2/CLKO/RPA3/RA3

9

PGEC2/RPB11/D-/RB11

31

10

VUSB3V3

32

TDO/RPA8/PMA8/RA8

11

AN11/RPB13/CTPLS/PMRD/RB13

33

SOSCI/RPB4/RB4

12

PGED4(4)/TMS/PMA10/RA10

34

SOSCO/RPA4/T1CK/CTED9/RA4

13

PGEC4 /TCK/CTED8/PMA7/RA7

35

TDI/RPA9/PMA9/RA9

14

CVREFOUT/AN10/C3INB/RPB14/VBUSON/SCK1/CTED5/RB14

36

AN12/RPC3/RC3

15

AN9/C3INA/RPB15/SCK2/CTED6/PMCS1/RB15

37

RPC4/PMA4/RC4

16

AVSS

38

RPC5/PMA3/RC5

17

AVDD

39

VSS

18

MCLR

40

VDD

19

PGED3/VREF+/CVREF+/AN0/C3INC/RPA0/CTED1/PMD7/RA0

41

RPB5/USBID/RB5

20

PGEC3/VREF-/CVREF-/AN1/RPA1/CTED2/PMD6/RA1

42

VBUS

21

PGED1/AN2/C1IND/C2INB/C3IND/RPB0/PMD0/RB0

43

RPB7/CTED3/PMD5/INT0/RB7

22

PGEC1/AN3/C1INC/C2INA/RPB1/CTED12/PMD1/RB1

44

RPB8/SCL1/CTED10/PMD4/RB8

Note

(4)

1:
2:
3:
4:
5:

The RPn pins can be used by remappable peripherals. See Table 1 for the available peripherals and Section 11.3 “Peripheral Pin
Select” for restrictions.
Every I/O port pin (RAx-RCx) can be used as a change notification pin (CNAx-CNCx). See Section 11.0 “I/O Ports” for more information.
The metal plane at the bottom of the device is not connected to any pins and is recommended to be connected to VSS externally.
This pin function is not available on PIC32MX210F016D and PIC32MX220F032D devices.
Shaded pins are 5V tolerant.

 2011-2018 Microchip Technology Inc.

DS60001168K-page 15

PIC32MX1XX/2XX 28/36/44-PIN FAMILY
Table of Contents
1.0 Device Overview ........................................................................................................................................................................ 19
2.0 Guidelines for Getting Started with 32-bit MCUs........................................................................................................................ 27
3.0 CPU ............................................................................................................................................................................................ 35
4.0 Memory Organization ................................................................................................................................................................. 39
5.0 Flash Program Memory .............................................................................................................................................................. 55
6.0 Resets ........................................................................................................................................................................................ 61
7.0 Interrupt Controller ..................................................................................................................................................................... 65
8.0 Oscillator Configuration .............................................................................................................................................................. 75
9.0 Direct Memory Access (DMA) Controller ................................................................................................................................... 85
10.0 USB On-The-Go (OTG)............................................................................................................................................................ 105
11.0 I/O Ports ................................................................................................................................................................................... 129
12.0 Timer1 ...................................................................................................................................................................................... 145
13.0 Timer2/3, Timer4/5 ................................................................................................................................................................... 149
14.0 Watchdog Timer (WDT) ........................................................................................................................................................... 155
15.0 Input Capture............................................................................................................................................................................ 159
16.0 Output Compare ....................................................................................................................................................................... 163
17.0 Serial Peripheral Interface (SPI)............................................................................................................................................... 167
18.0 Inter-Integrated Circuit (I2C) ..................................................................................................................................................... 175
19.0 Universal Asynchronous Receiver Transmitter (UART) ........................................................................................................... 183
20.0 Parallel Master Port (PMP)....................................................................................................................................................... 191
21.0 Real-Time Clock and Calendar (RTCC) ................................................................................................................................... 201
22.0 10-bit Analog-to-Digital Converter (ADC) ................................................................................................................................. 211
23.0 Comparator .............................................................................................................................................................................. 221
24.0 Comparator Voltage Reference (CVREF).................................................................................................................................. 225
25.0 Charge Time Measurement Unit (CTMU) ............................................................................................................................... 229
26.0 Power-Saving Features ........................................................................................................................................................... 235
27.0 Special Features ...................................................................................................................................................................... 241
28.0 Instruction Set .......................................................................................................................................................................... 253
29.0 Development Support............................................................................................................................................................... 255
30.0 Electrical Characteristics .......................................................................................................................................................... 259
31.0 50 MHz Electrical Characteristics............................................................................................................................................. 303
32.0 DC and AC Device Characteristics Graphs.............................................................................................................................. 309
33.0 Packaging Information.............................................................................................................................................................. 313
The Microchip Web Site ..................................................................................................................................................................... 343
Customer Change Notification Service .............................................................................................................................................. 343
Customer Support .............................................................................................................................................................................. 343
Product Identification System............................................................................................................................................................. 344

DS60001168K-page 16

 2011-2018 Microchip Technology Inc.

PIC32MX1XX/2XX 28/36/44-PIN FAMILY
TO OUR VALUED CUSTOMERS
It is our intention to provide our valued customers with the best documentation possible to ensure successful use of your Microchip
products. To this end, we will continue to improve our publications to better suit your needs. Our publications will be refined and
enhanced as new volumes and updates are introduced.
If you have any questions or comments regarding this publication, please contact the Marketing Communications Department via
E-mail at docerrors@microchip.com. We welcome your feedback.

Most Current Data Sheet
To obtain the most up-to-date version of this data sheet, please register at our Worldwide Web site at:
http://www.microchip.com
You can determine the version of a data sheet by examining its literature number found on the bottom outside corner of any page.
The last character of the literature number is the version number, (e.g., DS30000000A is version A of document DS30000000).

Errata
An errata sheet, describing minor operational differences from the data sheet and recommended workarounds, may exist for current
devices. As device/documentation issues become known to us, we will publish an errata sheet. The errata will specify the revision
of silicon and revision of document to which it applies.
To determine if an errata sheet exists for a particular device, please check with one of the following:
• Microchip’s Worldwide Web site; http://www.microchip.com
• Your local Microchip sales office (see last page)
When contacting a sales office, please specify which device, revision of silicon and data sheet (include literature number) you are
using.

Customer Notification System
Register on our web site at www.microchip.com to receive the most current information on all of our products.

 2011-2018 Microchip Technology Inc.

DS60001168K-page 17

PIC32MX1XX/2XX 28/36/44-PIN FAMILY
Referenced Sources
This device data sheet is based on the following
individual chapters of the “PIC32 Family Reference
Manual”. These documents should be considered as
the general reference for the operation of a particular
module or device feature.
Note:

•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•

To access the following documents, refer
to the Documentation > Reference
Manuals section of the Microchip PIC32
website: http://www.microchip.com/pic32

Section 1. “Introduction” (DS60001127)
Section 2. “CPU” (DS60001113)
Section 3. “Memory Organization” (DS60001115)
Section 5. “Flash Program Memory” (DS60001121)
Section 6. “Oscillator Configuration” (DS60001112)
Section 7. “Resets” (DS60001118)
Section 8. “Interrupt Controller” (DS60001108)
Section 9. “Watchdog Timer and Power-up Timer” (DS60001114)
Section 10. “Power-Saving Features” (DS60001130)
Section 12. “I/O Ports” (DS60001120)
Section 13. “Parallel Master Port (PMP)” (DS60001128)
Section 14. “Timers” (DS60001105)
Section 15. “Input Capture” (DS60001122)
Section 16. “Output Compare” (DS60001111)
Section 17. “10-bit Analog-to-Digital Converter (ADC)” (DS60001104)
Section 19. “Comparator” (DS60001110)
Section 20. “Comparator Voltage Reference (CVREF)” (DS60001109)
Section 21. “Universal Asynchronous Receiver Transmitter (UART)” (DS60001107)
Section 23. “Serial Peripheral Interface (SPI)” (DS60001106)
Section 24. “Inter-Integrated Circuit (I2C)” (DS60001116)
Section 27. “USB On-The-Go (OTG)” (DS60001126)
Section 29. “Real-Time Clock and Calendar (RTCC)” (DS60001125)
Section 31. “Direct Memory Access (DMA) Controller” (DS60001117)
Section 32. “Configuration” (DS60001124)
Section 33. “Programming and Diagnostics” (DS60001129)
Section 37. “Charge Time Measurement Unit (CTMU)” (DS60001167)

DS60001168K-page 18

 2011-2018 Microchip Technology Inc.

PIC32MX1XX/2XX 28/36/44-PIN FAMILY
1.0

This document contains device-specific information for
PIC32MX1XX/2XX 28/36/44-pin Family of devices.

DEVICE OVERVIEW

Note:

This data sheet summarizes the features
of the PIC32MX1XX/2XX 28/36/44-pin
Family of devices. It is not intended to be
a comprehensive reference source. To
complement the information in this data
sheet, refer to documents listed in the
Documentation > Reference Manual
section of the Microchip PIC32 web site
(www.microchip.com/pic32).

FIGURE 1-1:

Figure 1-1 illustrates a general block diagram of the
core and peripheral modules in the PIC32MX1XX/2XX
28/36/44-pin Family of devices.
Table 1-1 lists the functions of the various pins shown
in the pinout diagrams.

BLOCK DIAGRAM
OSC2/CLKO
OSC1/CLKI

VCAP

OSC/SOSC
Oscillators

Power-up
Timer

FRC/LPRC
Oscillators

Voltage
Regulator

PLL

Oscillator
Start-up Timer

PLL-USB

Watchdog
Timer

USBCLK
SYSCLK
PBCLK

Timing
Generation

Brown-out
Reset

Peripheral Bus Clocked by SYSCLK

CTMU

PORTA

Timer1-Timer5

INT
®

MIPS32 M4K
CPU Core

PORTC

IS
32
Remappable
Pins

®

DS
32
32

ICD

EJTAG

USB

PORTB

32

32

32
Bus Matrix
32

32

PWM
OC1-OC5

Peripheral Bus Clocked by PBCLK

Priority
Interrupt
Controller
DMAC

JTAG
BSCAN

MCLR

Power-on
Reset

Precision
Band Gap
Reference

Dividers

VDD, VSS

IC1-IC5

SPI1-SPI2

I2C1-I2C2

32

32

32
Data RAM

Peripheral Bridge
PMP

32-bit Wide
Program Flash Memory

Flash
Controller

10-bit ADC
UART1-UART2
RTCC
Comparators 1-3
Note:

Some features are not available on all devices. Refer to the family features tables (Table 1 and Table 2) for availability.

 2011-2018 Microchip Technology Inc.

DS60001168K-page 19

PIC32MX1XX/2XX 28/36/44-PIN FAMILY
TABLE 1-1:

PINOUT I/O DESCRIPTIONS
Pin Number(1)
28-pin
QFN

28-pin
SSOP/
SPDIP/
SOIC

36-pin
VTLA

44-pin
QFN/
TQFP/
VTLA

Pin
Type

Buffer
Type

AN0

27

2

33

19

AN1
AN2
AN3
AN4
AN5
AN6
AN7
AN8
AN9
AN10
AN11

28
1
2
3
4
—
—
—
23
22
21

3
4
5
6
7
—
—
—
26
25
24

20(2)

23(2)

I

Analog

CLKI

6

9

20
21
22
23
24
25
26
27
15
14
11
10(2)
36(3)
30

Analog
Analog
Analog
Analog
Analog
Analog
Analog
Analog
Analog
Analog
Analog
Analog

AN12

34
35
36
1
2
3
4
—
29
28
27
26(2)
11(3)
7

I
I
I
I
I
I
I
I
I
I
I
I

Pin Name

Description

Analog input channels.

ST/CMOS External clock source input. Always
associated with OSC1 pin function.
CLKO
7
10
8
31
O
—
Oscillator crystal output. Connects to
crystal or resonator in Crystal Oscillator
mode. Optionally functions as CLKO in
RC and EC modes. Always associated
with OSC2 pin function.
OSC1
6
9
7
30
I
ST/CMOS Oscillator crystal input. ST buffer when
configured in RC mode; CMOS
otherwise.
OSC2
7
10
8
31
O
—
Oscillator crystal output. Connects to
crystal or resonator in Crystal Oscillator
mode. Optionally functions as CLKO in
RC and EC modes.
SOSCI
8
11
9
33
I
ST/CMOS 32.768 kHz low-power oscillator crystal
input; CMOS otherwise.
SOSCO
9
12
10
34
O
—
32.768 kHz low-power oscillator crystal
output.
REFCLKI
PPS
PPS
PPS
PPS
I
ST
Reference Input Clock
REFCLKO
PPS
PPS
PPS
PPS
O
—
Reference Output Clock
IC1
PPS
PPS
PPS
PPS
I
ST
Capture Inputs 1-5
IC2
PPS
PPS
PPS
PPS
I
ST
IC3
PPS
PPS
PPS
PPS
I
ST
IC4
PPS
PPS
PPS
PPS
I
ST
IC5
PPS
PPS
PPS
PPS
I
ST
Legend: CMOS = CMOS compatible input or output
Analog = Analog input
P = Power
ST = Schmitt Trigger input with CMOS levels
O = Output
I = Input
TTL = TTL input buffer
PPS = Peripheral Pin Select
— = N/A
Note 1: Pin numbers are provided for reference only. See the “Pin Diagrams” section for device pin availability.
2: Pin number for PIC32MX1XX devices only.
3: Pin number for PIC32MX2XX devices only.

DS60001168K-page 20

I

 2011-2018 Microchip Technology Inc.

PIC32MX1XX/2XX 28/36/44-PIN FAMILY
TABLE 1-1:

PINOUT I/O DESCRIPTIONS (CONTINUED)
Pin Number(1)

Pin Name

OC1
OC2
OC3
OC4
OC5
OCFA
OCFB
INT0
INT1
INT2
INT3
INT4
RA0

28-pin
QFN

28-pin
SSOP/
SPDIP/
SOIC

36-pin
VTLA

44-pin
QFN/
TQFP/
VTLA

Pin
Type

Buffer
Type

PPS
PPS
PPS
PPS
PPS
PPS
PPS
13
PPS
PPS
PPS
PPS
27

PPS
PPS
PPS
PPS
PPS
PPS
PPS
16
PPS
PPS
PPS
PPS
2

PPS
PPS
PPS
PPS
PPS
PPS
PPS
17
PPS
PPS
PPS
PPS
33

PPS
PPS
PPS
PPS
PPS
PPS
PPS
43
PPS
PPS
PPS
PPS
19

O
O
O
O
O
I
I
I
I
I
I
I

—
—
—
—
—
ST
ST
ST
ST
ST
ST
ST

Description

Output Compare Output 1
Output Compare Output 2
Output Compare Output 3
Output Compare Output 4
Output Compare Output 5
Output Compare Fault A Input
Output Compare Fault B Input
External Interrupt 0
External Interrupt 1
External Interrupt 2
External Interrupt 3
External Interrupt 4

I/O
ST
PORTA is a bidirectional I/O port
RA1
28
3
34
20
I/O
ST
RA2
6
9
7
30
I/O
ST
RA3
7
10
8
31
I/O
ST
RA4
9
12
10
34
I/O
ST
RA7
—
—
—
13
I/O
ST
RA8
—
—
—
32
I/O
ST
RA9
—
—
—
35
I/O
ST
RA10
—
—
—
12
I/O
ST
RB0
1
4
35
21
I/O
ST
PORTB is a bidirectional I/O port
RB1
2
5
36
22
I/O
ST
RB2
3
6
1
23
I/O
ST
RB3
4
7
2
24
I/O
ST
RB4
8
11
9
33
I/O
ST
RB5
11
14
15
41
I/O
ST
RB6
12(2)
15(2)
16(2)
42(2)
I/O
ST
RB7
13
16
17
43
I/O
ST
RB8
14
17
18
44
I/O
ST
RB9
15
18
19
1
I/O
ST
RB10
18
21
24
8
I/O
ST
RB11
19
22
25
9
I/O
ST
RB12
20(2)
23(2)
26(2)
10(2)
I/O
ST
RB13
21
24
27
11
I/O
ST
RB14
22
25
28
14
I/O
ST
RB15
23
26
29
15
I/O
ST
Legend: CMOS = CMOS compatible input or output
Analog = Analog input
P = Power
ST = Schmitt Trigger input with CMOS levels
O = Output
I = Input
TTL = TTL input buffer
PPS = Peripheral Pin Select
— = N/A
Note 1: Pin numbers are provided for reference only. See the “Pin Diagrams” section for device pin availability.
2: Pin number for PIC32MX1XX devices only.
3: Pin number for PIC32MX2XX devices only.

 2011-2018 Microchip Technology Inc.

DS60001168K-page 21

PIC32MX1XX/2XX 28/36/44-PIN FAMILY
TABLE 1-1:

PINOUT I/O DESCRIPTIONS (CONTINUED)
Pin Number(1)
28-pin
QFN

28-pin
SSOP/
SPDIP/
SOIC

36-pin
VTLA

44-pin
QFN/
TQFP/
VTLA

Pin
Type

Buffer
Type

RC0
RC1
RC2
RC3
RC4
RC5
RC6
RC7
RC8
RC9
T1CK
T2CK
T3CK
T4CK
T5CK

—
—
—
—
—
—
—
—
—
—
9
PPS
PPS
PPS
PPS

—
—
—
—
—
—
—
—
—
—
12
PPS
PPS
PPS
PPS

3
4
—
11
—
—
—
—
—
20
10
PPS
PPS
PPS
PPS

25
26
27
36
37
38
2
3
4
5
34
PPS
PPS
PPS
PPS

I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I
I
I
I
I

ST
ST
ST
ST
ST
ST
ST
ST
ST
ST
ST
ST
ST
ST
ST

PORTC is a bidirectional I/O port

U1CTS

PPS

PPS

PPS

PPS

I

ST

UART1 clear to send

U1RTS
U1RX

PPS
PPS

PPS
PPS

PPS
PPS

PPS
PPS

O
I

—
ST

UART1 ready to send
UART1 receive

U1TX

PPS

PPS

PPS

PPS

O

—

UART1 transmit

U2CTS

PPS

PPS

PPS

PPS

I

ST

UART2 clear to send

U2RTS
U2RX

PPS
PPS

PPS
PPS

PPS
PPS

PPS
PPS

O

—

UART2 ready to send

I

ST

UART2 receive

U2TX

PPS

PPS

PPS

PPS

O

—

SCK1

22

25

28

14

I/O

ST

SDI1

PPS

PPS

PPS

PPS

I

ST

UART2 transmit
Synchronous serial clock input/output for
SPI1
SPI1 data in

SDO1

PPS

PPS

PPS

PPS

O

—

SPI1 data out

SS1

PPS

PPS

PPS

PPS

I/O

ST

SCK2

23

26

29

15

I/O

ST

SDI2

PPS

PPS

PPS

PPS

I

ST

SPI1 slave synchronization or frame
pulse I/O
Synchronous serial clock input/output for
SPI2
SPI2 data in

SDO2

PPS

PPS

PPS

PPS

O

—

SPI2 data out

SS2

PPS

PPS

PPS

PPS

I/O

ST

Pin Name

Description

Timer1 external clock input
Timer2 external clock input
Timer3 external clock input
Timer4 external clock input
Timer5 external clock input

SPI2 slave synchronization or frame
pulse I/O
SCL1
14
17
18
44
I/O
ST
Synchronous serial clock input/output for
I2C1
Legend: CMOS = CMOS compatible input or output
Analog = Analog input
P = Power
ST = Schmitt Trigger input with CMOS levels
O = Output
I = Input
TTL = TTL input buffer
PPS = Peripheral Pin Select
— = N/A
Note 1: Pin numbers are provided for reference only. See the “Pin Diagrams” section for device pin availability.
2: Pin number for PIC32MX1XX devices only.
3: Pin number for PIC32MX2XX devices only.

DS60001168K-page 22

 2011-2018 Microchip Technology Inc.

PIC32MX1XX/2XX 28/36/44-PIN FAMILY
TABLE 1-1:

PINOUT I/O DESCRIPTIONS (CONTINUED)
Pin Number(1)
28-pin
QFN

28-pin
SSOP/
SPDIP/
SOIC

36-pin
VTLA

44-pin
QFN/
TQFP/
VTLA

Pin
Type

Buffer
Type

SDA1

15

18

19

1

I/O

ST

SCL2

4

7

2

24

I/O

ST

SDA2

3

6

1

23

I/O

ST

19(2)
11(3)
14
13
15
4
28

22(2)
14(3)
17
16
18
7
3

25(2)
15(3)
18
17
19
2
34

12

I

ST

13
35
32
24
20

I
O
O
O
I

ST
—
—
ST
Analog

27
22
4

2
25
7

33
28
2

19
14
24

I
O

Analog
Analog

Pin Name

TMS
TCK
TDI
TDO
RTCC
CVREFCVREF+
CVREFOUT
C1INA

Description

Synchronous serial data input/output for
I2C1
Synchronous serial clock input/output for
I2C2
Synchronous serial data input/output for
I2C2
JTAG Test mode select pin
JTAG test clock input pin
JTAG test data input pin
JTAG test data output pin
Real-Time Clock alarm output
Comparator Voltage Reference (low)
Comparator Voltage Reference (high)
Comparator Voltage Reference output

I
Analog Comparator Inputs
C1INB
3
6
1
23
I
Analog
C1INC
2
5
36
22
I
Analog
C1IND
1
4
35
21
I
Analog
C2INA
2
5
36
22
I
Analog
C2INB
1
4
35
21
I
Analog
C2INC
4
7
2
24
I
Analog
C2IND
3
6
1
23
I
Analog
C3INA
23
26
29
15
I
Analog
C3INB
22
25
28
14
I
Analog
C3INC
27
2
33
19
I
Analog
C3IND
1
4
35
21
I
Analog
C1OUT
PPS
PPS
PPS
PPS
O
—
Comparator Outputs
C2OUT
PPS
PPS
PPS
PPS
O
—
C3OUT
PPS
PPS
PPS
PPS
O
—
Legend: CMOS = CMOS compatible input or output
Analog = Analog input
P = Power
ST = Schmitt Trigger input with CMOS levels
O = Output
I = Input
TTL = TTL input buffer
PPS = Peripheral Pin Select
— = N/A
Note 1: Pin numbers are provided for reference only. See the “Pin Diagrams” section for device pin availability.
2: Pin number for PIC32MX1XX devices only.
3: Pin number for PIC32MX2XX devices only.

 2011-2018 Microchip Technology Inc.

DS60001168K-page 23

PIC32MX1XX/2XX 28/36/44-PIN FAMILY
TABLE 1-1:

PINOUT I/O DESCRIPTIONS (CONTINUED)
Pin Number(1)
28-pin
QFN

28-pin
SSOP/
SPDIP/
SOIC

36-pin
VTLA

44-pin
QFN/
TQFP/
VTLA

Pin
Type

Buffer
Type

PMA0

7

10

8

3

I/O

TTL/ST

PMA1

9

12

10

2

I/O

TTL/ST

23
20(2)
1(3)
19(2)
2(3)
18(2)
3(3)
15

—
—
—
—
—
—
—
—
—
26
23(2)
4(3)
22(2)
5(3)
21(2)
6(3)
18

—
—
—
—
—
—
—
—
—
29
26(2)
35(3)
25(2)
36(3)
24(2)
1(3)
19

27
38
37
4
5
13
32
35
12
15
10(2)
21(3)
9(2)
22(3)
8(2)
23(3)
1

O
O
O
O
O
O
O
O
O
O

—
—
—
—
—
—
—
—
—
—

I/O

TTL/ST

I/O

TTL/ST

I/O

TTL/ST

14
13
12(2)
28(3)
11(2)
27(3)
21
22(2)
4(3)
12(3)
20(3)

17
16
15(2)
3(3)
14(2)
2(3)
24
25(2)
7(3)
15(3)
23(3)

18
17
16(2)
34(3)
15(2)
33(3)
27
28(2)
2(3)
16(3)
26(3)

44
43
42(2)
20(3)
41(2)
19(3)
11
14(2)
24(3)
42(3)
10(3)

I/O
I/O
I/O

TTL/ST
TTL/ST
TTL/ST

I/O

TTL/ST

I/O

TTL/ST

O

—

Parallel Master Port read strobe

O

—

Parallel Master Port write strobe

I
P

Analog
—

Pin Name

PMA2
PMA3
PMA4
PMA5
PMA6
PMA7
PMA8
PMA9
PMA10
PMCS1
PMD0
PMD1
PMD2
PMD3
PMD4
PMD5
PMD6
PMD7
PMRD
PMWR
VBUS
VUSB3V3

Description

Parallel Master Port Address bit 0 input
(Buffered Slave modes) and output
(Master modes)
Parallel Master Port Address bit 1 input
(Buffered Slave modes) and output
(Master modes)
Parallel Master Port address
(Demultiplexed Master modes)

Parallel Master Port Chip Select 1 strobe
Parallel Master Port data (Demultiplexed
Master mode) or address/data
(Multiplexed Master modes)

USB bus power monitor
USB internal transceiver supply. This pin
must be connected to VDD.
VBUSON
22(3)
25(3)
28(3)
14(3)
O
—
USB Host and OTG bus power control
output
21(3)
24(3)
8(3)
I/O
Analog USB D+
D+
18(3)
(3)
(3)
(3)
D19
22
25
9(3)
I/O
Analog USB DLegend: CMOS = CMOS compatible input or output
Analog = Analog input
P = Power
ST = Schmitt Trigger input with CMOS levels
O = Output
I = Input
TTL = TTL input buffer
PPS = Peripheral Pin Select
— = N/A
Note 1: Pin numbers are provided for reference only. See the “Pin Diagrams” section for device pin availability.
2: Pin number for PIC32MX1XX devices only.
3: Pin number for PIC32MX2XX devices only.

DS60001168K-page 24

 2011-2018 Microchip Technology Inc.

PIC32MX1XX/2XX 28/36/44-PIN FAMILY
TABLE 1-1:

PINOUT I/O DESCRIPTIONS (CONTINUED)
Pin Number(1)
28-pin
QFN

28-pin
SSOP/
SPDIP/
SOIC

36-pin
VTLA

44-pin
QFN/
TQFP/
VTLA

Pin
Type

Buffer
Type

USBID
CTED1
CTED2
CTED3
CTED4
CTED5
CTED6
CTED7
CTED8
CTED9
CTED10
CTED11
CTED12
CTED13
CTPLS
PGED1

11(3)
27
28
13
15
22
23
—
—
9
14
18
2
3
21
1

14(3)
2
3
16
18
25
26
—
—
12
17
21
5
6
24
4

15(3)
33
34
17
19
28
29
20
—
10
18
24
36
1
27
35

41(3)
19
20
43
1
14
15
5
13
34
44
8
22
23
11
21

I
I
I
I
I
I
I
I
I
I
I
I
I
I
O
I/O

ST
ST
ST
ST
ST
ST
ST
ST
ST
ST
ST
ST
ST
ST
—
ST

PGEC1

2

5

36

22

I

ST

PGED2

18

21

24

8

I/O

ST

PGEC2

19

22

25

9

I

ST

11(2)
27(3)
12(2)
28(3)
—

14(2)
2(3)
15(2)
3(3)
—

15(2)
33(3)
16(2)
34(3)
3

41(2)
19(3)
42(2)
20(3)
12

I/O

ST

I

ST

Pin Name

PGED3
PGEC3
PGED4

Description

USB OTG ID detect
CTMU External Edge Input

CTMU Pulse Output
Data I/O pin for Programming/Debugging
Communication Channel 1
Clock input pin for
Programming/Debugging
Communication Channel 1
Data I/O pin for Programming/Debugging
Communication Channel 2
Clock input pin for
Programming/Debugging
Communication Channel 2
Data I/O pin for Programming/Debugging
Communication Channel 3
Clock input pin for Programming/
Debugging Communication Channel 3

Data I/O pin for Programming/Debugging
Communication Channel 4
PGEC4
—
—
4
13
Clock input pin for Programming/
I
ST
Debugging Communication Channel 4
Legend: CMOS = CMOS compatible input or output
Analog = Analog input
P = Power
ST = Schmitt Trigger input with CMOS levels
O = Output
I = Input
TTL = TTL input buffer
PPS = Peripheral Pin Select
— = N/A
Note 1: Pin numbers are provided for reference only. See the “Pin Diagrams” section for device pin availability.
2: Pin number for PIC32MX1XX devices only.
3: Pin number for PIC32MX2XX devices only.

 2011-2018 Microchip Technology Inc.

I/O

ST

DS60001168K-page 25

PIC32MX1XX/2XX 28/36/44-PIN FAMILY
TABLE 1-1:

PINOUT I/O DESCRIPTIONS (CONTINUED)
Pin Number(1)

Pin Name

MCLR

28-pin
QFN

28-pin
SSOP/
SPDIP/
SOIC

36-pin
VTLA

44-pin
QFN/
TQFP/
VTLA

Pin
Type

Buffer
Type

26

1

32

18

I/P

ST

Description

Master Clear (Reset) input. This pin is an
active-low Reset to the device.
25
28
31
17
P
—
Positive supply for analog modules. This
AVDD
pin must be connected at all times.
24
27
30
16
P
—
Ground reference for analog modules
AVSS
VDD
10
13
5, 13, 14,
28, 40
P
—
Positive supply for peripheral logic and
23
I/O pins
17
20
22
7
P
—
CPU logic filter capacitor connection
VCAP
VSS
5, 16
8, 19
6, 12, 21 6, 29, 39
P
—
Ground reference for logic and I/O pins.
This pin must be connected at all times.
VREF+
27
2
33
19
I
Analog Analog voltage reference (high) input
28
3
34
20
I
Analog Analog voltage reference (low) input
VREFLegend: CMOS = CMOS compatible input or output
Analog = Analog input
P = Power
ST = Schmitt Trigger input with CMOS levels
O = Output
I = Input
TTL = TTL input buffer
PPS = Peripheral Pin Select
— = N/A
Note 1: Pin numbers are provided for reference only. See the “Pin Diagrams” section for device pin availability.
2: Pin number for PIC32MX1XX devices only.
3: Pin number for PIC32MX2XX devices only.

DS60001168K-page 26

 2011-2018 Microchip Technology Inc.

PIC32MX1XX/2XX 28/36/44-PIN FAMILY
2.0
Note:

2.1

GUIDELINES FOR GETTING
STARTED WITH 32-BIT MCUs
This data sheet summarizes the features
of the PIC32MX1XX/2XX 28/36/44-pin
Family of devices. It is not intended to be
a comprehensive reference source. To
complement the information in this data
sheet, refer to the documents listed in the
Documentation > Reference Manual
section of the Microchip PIC32 web site
(www.microchip.com/pic32).

Basic Connection Requirements

Getting started with the PIC32MX1XX/2XX 28/36/44pin Family of 32-bit Microcontrollers (MCUs) requires
attention to a minimal set of device pin connections
before proceeding with development. The following is a
list of pin names, which must always be connected:
• All VDD and VSS pins (see 2.2 “Decoupling
Capacitors”)
• All AVDD and AVSS pins, even if the ADC module
is not used (see 2.2 “Decoupling Capacitors”)
• VCAP pin (see 2.3 “Capacitor on Internal
Voltage Regulator (VCAP)”)
• MCLR pin (see 2.4 “Master Clear (MCLR) Pin”)
• PGECx/PGEDx pins, used for In-Circuit Serial
Programming™ (ICSP™) and debugging purposes (see 2.5 “ICSP Pins”)
• OSC1 and OSC2 pins, when external oscillator
source is used (see 2.7 “External Oscillator
Pins”)
The following pins may be required:
• VREF+/VREF- pins – used when external voltage
reference for the ADC module is implemented
Note:

The AVDD and AVSS pins must be connected, regardless of ADC use and the
ADC voltage reference source.

 2011-2018 Microchip Technology Inc.

2.2

Decoupling Capacitors

The use of decoupling capacitors on power supply
pins, such as VDD, VSS, AVDD and AVSS is required.
See Figure 2-1.
Consider the following criteria when using decoupling
capacitors:
• Value and type of capacitor: A value of 0.1 µF
(100 nF), 10-20V is recommended. The capacitor
should be a low Equivalent Series Resistance
(low-ESR) capacitor and have resonance frequency in the range of 20 MHz and higher. It is
further recommended that ceramic capacitors be
used.
• Placement on the printed circuit board: The
decoupling capacitors should be placed as close
to the pins as possible. It is recommended that
the capacitors be placed on the same side of the
board as the device. If space is constricted, the
capacitor can be placed on another layer on the
PCB using a via; however, ensure that the trace
length from the pin to the capacitor is within onequarter inch (6 mm) in length.
• Handling high frequency noise: If the board is
experiencing high frequency noise, upward of
tens of MHz, add a second ceramic-type capacitor
in parallel to the above described decoupling
capacitor. The value of the second capacitor can
be in the range of 0.01 µF to 0.001 µF. Place this
second capacitor next to the primary decoupling
capacitor. In high-speed circuit designs, consider
implementing a decade pair of capacitances as
close to the power and ground pins as possible.
For example, 0.1 µF in parallel with 0.001 µF.
• Maximizing performance: On the board layout
from the power supply circuit, run the power and
return traces to the decoupling capacitors first,
and then to the device pins. This ensures that the
decoupling capacitors are first in the power chain.
Equally important is to keep the trace length
between the capacitor and the power pins to a
minimum thereby reducing PCB track inductance.

DS60001168K-page 27

PIC32MX1XX/2XX 28/36/44-PIN FAMILY
FIGURE 2-1:

RECOMMENDED
MINIMUM CONNECTION

Tantalum or
ceramic 10 µF
ESR  3(3)

MCLR

1K
C
0.1 µF

VSS

VDD

10K
R1

VCAP

VUSB3V3(1)

PIC32

VDD

VSS

Connect(2)

VDD

0.1 µF
Ceramic

AVSS

VDD

AVDD

VSS

0.1 µF
Ceramic

0.1 µF
Ceramic

VSS

VDD

0.1 µF
Ceramic

0.1 µF
Ceramic

L1(2)
Note

1:

If the USB module is not used, this pin must be
connected to VDD.

2:

As an option, instead of a hard-wired connection, an
inductor (L1) can be substituted between VDD and
AVDD to improve ADC noise rejection. The inductor
impedance should be less than 3 and the inductor
capacity greater than 10 mA.

2.4

Master Clear (MCLR) Pin

The MCLR
functions:

L
1:

2.2.1

2.3.1

FIGURE 2-2:

EXAMPLE OF MCLR PIN
CONNECTIONS

VDD

0.1 µF(2)

(i.e., ADC conversion rate/2)

10k

C

R1(1)
1 k

MCLR

PIC32

2

Aluminum or electrolytic capacitors should not be
used. ESR  3 from -40ºC to 125ºC @ SYSCLK
frequency (i.e., MIPS).

Note

1
5
4
2
3
6

Capacitor on Internal Voltage
Regulator (VCAP)
INTERNAL REGULATOR MODE

A low-ESR (3 ohm) capacitor is required on the VCAP
pin, which is used to stabilize the internal voltage
regulator output. The VCAP pin must not be connected
to VDD, and must have a CEFC capacitor, with at least a
6V rating, connected to ground. The type can be
ceramic or tantalum. Refer to 30.0 “Electrical
Characteristics” for additional information on CEFC
specifications.

2.5

PGECx(3)
PGEDx(3)

VDD
VSS
NC

1:

470  R1  1 will limit any current flowing into
MCLR from the external capacitor C, in the event of
MCLR pin breakdown, due to Electrostatic Discharge
(ESD) or Electrical Overstress (EOS). Ensure that the
MCLR pin VIH and VIL specifications are met without
interfering with the Debug/Programmer tools.

2:

The capacitor can be sized to prevent unintentional
Resets from brief glitches or to extend the device
Reset period during POR.

3:

No pull-ups or bypass capacitors are allowed on
active debug/program PGECx/PGEDx pins.

BULK CAPACITORS

DS60001168K-page 28

device

Place the components illustrated in Figure 2-2 within
one-quarter inch (6 mm) from the MCLR pin.

The use of a bulk capacitor is recommended to improve
power supply stability. Typical values range from 4.7 µF
to 47 µF. This capacitor should be located as close to
the device as possible.

2.3

specific

For example, as illustrated in Figure 2-2, it is
recommended that the capacitor C, be isolated from
the MCLR pin during programming and debugging
operations.

R

1 -
 --------------------  2f C 

two

Pulling The MCLR pin low generates a device Reset.
Figure 2-2 illustrates a typical MCLR circuit. During
device programming and debugging, the resistance
and capacitance that can be added to the pin must
be considered. Device programmers and debuggers
drive the MCLR pin. Consequently, specific voltage
levels (VIH and VIL) and fast signal transitions must
not be adversely affected. Therefore, specific values
of R and C will need to be adjusted based on the
application and PCB requirements.

ICSP™

f

F CNV
-------------2
1
---------------------- 2 LC 

provides

• Device Reset
• Device programming and debugging

Where:

f

pin

ICSP Pins

The PGECx and PGEDx pins are used for ICSP and
debugging purposes. It is recommended to keep the
trace length between the ICSP connector and the ICSP
pins on the device as short as possible. If the ICSP connector is expected to experience an ESD event, a
series resistor is recommended, with the value in the
range of a few tens of Ohms, not to exceed 100 Ohms.

 2011-2018 Microchip Technology Inc.

PIC32MX1XX/2XX 28/36/44-PIN FAMILY
Pull-up resistors, series diodes and capacitors on the
PGECx and PGEDx pins are not recommended as they
will interfere with the programmer/debugger communications to the device. If such discrete components are
an application requirement, they should be removed
from the circuit during programming and debugging.
Alternatively, refer to the AC/DC characteristics and
timing requirements information in the respective
device Flash programming specification for information
on capacitive loading limits and pin input voltage high
(VIH) and input low (VIL) requirements.
Ensure that the “Communication Channel Select” (i.e.,
PGECx/PGEDx pins) programmed into the device
matches the physical connections for the ICSP to
MPLAB® ICD 3 or MPLAB REAL ICE™.

The oscillator circuit should be placed on the same side
of the board as the device. Also, place the oscillator circuit close to the respective oscillator pins, not exceeding one-half inch (12 mm) distance between them. The
load capacitors should be placed next to the oscillator
itself, on the same side of the board. Use a grounded
copper pour around the oscillator circuit to isolate them
from surrounding circuits. The grounded copper pour
should be routed directly to the MCU ground. Do not
run any signal traces or power traces inside the ground
pour. Also, if using a two-sided board, avoid any traces
on the other side of the board where the crystal is
placed. A suggested layout is illustrated in Figure 2-3.

FIGURE 2-3:

For more information on ICD 3 and REAL ICE
connection requirements, refer to the following
documents that are available on the Microchip web
site:

SUGGESTED OSCILLATOR
CIRCUIT PLACEMENT
Oscillator
Secondary

• “Using MPLAB® ICD 3” (poster) (DS50001765)
• “MPLAB® ICD 3 Design Advisory” (DS50001764)
• “MPLAB® REAL ICE™ In-Circuit Debugger
User’s Guide” (DS50001616)
• “Using MPLAB® REAL ICE™ Emulator” (poster)
(DS50001749)

2.6

JTAG

The TMS, TDO, TDI and TCK pins are used for testing
and debugging according to the Joint Test Action
Group (JTAG) standard. It is recommended to keep the
trace length between the JTAG connector and the
JTAG pins on the device as short as possible. If the
JTAG connector is expected to experience an ESD
event, a series resistor is recommended with the value
in the range of a few tens of Ohms, not to exceed 100
Ohms.

Guard Trace
Guard Ring
Main Oscillator

2.8

Unused I/Os

Unused I/O pins should not be allowed to float as
inputs. They can be configured as outputs and driven
to a logic-low state.
Alternatively, inputs can be reserved by connecting the
pin to VSS through a 1k to 10k resistor and configuring
the pin as an input.

Pull-up resistors, series diodes and capacitors on the
TMS, TDO, TDI and TCK pins are not recommended
as they will interfere with the programmer/debugger
communications to the device. If such discrete components are an application requirement, they should be
removed from the circuit during programming and
debugging. Alternatively, refer to the AC/DC characteristics and timing requirements information in the
respective device Flash programming specification for
information on capacitive loading limits and pin input
voltage high (VIH) and input low (VIL) requirements.

2.7

External Oscillator Pins

Many MCUs have options for at least two oscillators: a
high-frequency primary oscillator and a low-frequency
secondary oscillator (refer to Section 8.0 “Oscillator
Configuration” for details).

 2011-2018 Microchip Technology Inc.

DS60001168K-page 29

PIC32MX1XX/2XX 28/36/44-PIN FAMILY
FIGURE 2-4:

The following example assumptions are used to
calculate the Primary Oscillator loading capacitor
values:

Circuit A
Typical XT
(4-10 MHz)

C1

• CIN = PIC32_OSC2_Pin Capacitance = ~4-5 pF
• COUT = PIC32_OSC1_Pin Capacitance = ~4-5 pF
• C1 and C2 = XTAL manufacturing recommended
loading capacitance
• Estimated PCB stray capacitance, (i.e.,12 mm
length) = 2.5 pF

1M
OSC2

EXAMPLE 2-1: CRYSTAL LOAD CAPACITOR
CALCULATION

Circuit B

= {( [5 + 15][5 + 15] ) / [5 + 15 + 15 + 5] } + 2.5 pF

C1

Therefore:
= {( [CIN + C1] * [COUT + C2] ) / [CIN + C1 + C2 + COUT] }
+ estimated oscillator PCB stray capacitance

OSC1

Typical HS
(10-25 MHz)

Crystal manufacturer recommended: C1 = C2 = 15 pF
CLOAD

PRIMARY CRYSTAL
OSCILLATOR CIRCUIT
RECOMMENDATIONS

C2

CRYSTAL OSCILLATOR DESIGN
CONSIDERATION

C2

2.8.1

= {( [20][20]) / [40] } + 2.5
= 10 + 2.5 = 12.5 pF

OSC2

Rounded to the nearest standard value or 12 pF in this example for
Primary Oscillator crystals “C1” and “C2”.

Circuit C

The following tips are used to increase oscillator gain,
(i.e., to increase peak-to-peak oscillator signal):

Note:

2.8.1.1

Do not add excessive gain such that the
oscillator signal is clipped, flat on top of
the sine wave. If so, you need to reduce
the gain or add a series resistor, RS, as
shown in circuit “C” in Figure 2-4. Failure
to do so will stress and age the crystal,
which can result in an early failure. Adjust
the gain to trim the max peak-to-peak to
~VDD-0.6V. When measuring the oscillator signal you must use a FET scope
probe or a probe with  1.5 pF or the
scope probe itself will unduly change the
gain and peak-to-peak levels.

C2

Typical XT/HS
(4-25 MHz)

C1

• Select a crystal with a lower “minimum” power drive
rating
• Select an crystal oscillator with a lower XTAL
manufacturing “ESR” rating.
• Add a parallel resistor across the crystal. The smaller
the resistor value the greater the gain. It is recommended to stay in the range of 600k to 1M
• C1 and C2 values also affect the gain of the oscillator.
The lower the values, the higher the gain.
• C2/C1 ratio also affects gain. To increase the gain,
make C1 slightly smaller than C2, which will also help
start-up performance.

OSC1

Rs
1M
OSC2

OSC1

Circuit D
Not Recommended

1M
Rs

OSC1

OSC2

Circuit E
Not Recommended

Additional Microchip References

• AN588 “PICmicro® Microcontroller Oscillator
Design Guide”
• AN826 “Crystal Oscillator Basics and Crystal
Selection for rfPIC™ and PICmicro® Devices”
• AN849 “Basic PICmicro® Oscillator Design”

DS60001168K-page 30

Rs
1M
OSC2

OSC1

 2011-2018 Microchip Technology Inc.

PIC32MX1XX/2XX 28/36/44-PIN FAMILY
2.9

Typical Application Connection
Examples

Examples of typical application connections are shown
in Figure 2-5 and Figure 2-6.

FIGURE 2-5:

CAPACITIVE TOUCH SENSING WITH GRAPHICS APPLICATION

PIC32MX120F032D
Current Source
To AN6

To AN7

To AN8

To AN9

To AN11

To AN0

CTMU

AN0

AN1

ADC

R1

R1

R1

R1

C1

C2

C3

C4

C5

To AN1

Read the Touch Sensors
Microchip
mTouch™
Library

R1

R2

R2

R2

R2

R2

C1

C2

C3

C4

C5

R3

R3

R3

R3

R3

C1

C2

C3

C4

C5

AN9
To AN5

Process Samples
AN11
User
Application
Display Data
Microchip
Graphics
Library

FIGURE 2-6:

USB
Host

Parallel
Master
Port

LCD Controller

PMPD<7:0>

Display
Controller

Frame
Buffer

PMPWR

LCD
Panel

AUDIO PLAYBACK APPLICATION
PMPD<7:0>
USB

PMP

Display
PMPWR

PIC32MX220F032D
I2S

Stereo Headphones

3
Audio
Codec

SPI

3

Speaker

3
MMC SD
SDI

 2011-2018 Microchip Technology Inc.

DS60001168K-page 31

PIC32MX1XX/2XX 28/36/44-PIN FAMILY
2.10
2.10.1

Considerations When Interfacing
To Remotely Powered Circuits
NON-5V TOLERANT INPUT PINS

A quick review of the maximum rating section in the
Section 30.0 “Electrical Characteristics” will
indicate that the voltage on any non-5V tolerant pin
should not exceed AVDD/VDD+0.3V. Figure 2-7
illustrates a remote circuit using an independent power
source that is powered while connected to a PIC32
non-5V tolerant circuit which is not powered.

FIGURE 2-7:

DS60001168K-page 32

REMOTE CIRCUIT WITH AN INDEPENDENT POWER SOURCE

 2011-2018 Microchip Technology Inc.

PIC32MX1XX/2XX 28/36/44-PIN FAMILY
case, it is recommended that users can implement a
digital or analog signal isolation, as shown in Figure 28.

Without proper signal isolation on non-5V tolerant
pins, the remote signal can power the PIC32 through
the high side ESD protection diodes. This violates the
maximum rating specification and can cause improper
initialization of internal PIC32 logic circuits. In this

FIGURE 2-8:

DIGITAL AND ANALOG SIGNAL ISOLATION

Digital signal isolators along with optional level
translation examples are provided in Table 2-1.

Analog/Digital Switch

Optional Coupling

Capacitive Coupling

EXAMPLES OF DIGITAL ISOLATORS WITH OPTIONAL LEVEL TRANSLATION
Inductive Coupling

TABLE 2-1:

ADuM7241 / 40 ARZ (1Mbps)

X

-

-

-

ADuM7241 / 40 CRZ (25 Mbps)

X

-

-

-

ISO721

-

X

-

-

LTV-829S (2 Chan)

-

-

X

-

LTV-849S (4 Chan)

-

-

-

-

FSA266 / NC7WB66

-

-

-

X

 2011-2018 Microchip Technology Inc.

DS60001168K-page 33

PIC32MX1XX/2XX 28/36/44-PIN FAMILY
2.10.2

5V-TOLERANT INPUT PINS

The internal high-side diode on 5V-tolerant pins, rather
than being connected to VDD, are bussed to an
internal floating node, as shown in Figure 2-9.
Voltages on these pins, if VDD < 2.3V, should not
exceed roughly 3.2V relative to PIC32 VSS. At 3.6V or
above, it will violate the absolute maximum
specification and impact the device reliability.

FIGURE 2-9:

DS60001168K-page 34

If a remotely powered digital only signal can be
guaranteed to always be ≤ 3.2V relative to PIC32 VSS,
then a 5V-tolerant pin can be used without a digital
isolator. This can be assumed when the following is
applicable:
• No ground loop issue
• The logic ground of the two circuits is not at the
same absolute level
• No remote logic low inputs are less than VSS 0.3V

5V-TOLERANT INPUT PINS BUSSED TO AN INTERNAL FLOATING NODE

 2011-2018 Microchip Technology Inc.

PIC32MX1XX/2XX 28/36/44-PIN FAMILY
3.0
Note:

CPU
This data sheet summarizes the features
of the PIC32MX1XX/2XX 28/36/44-pin
Family of devices. It is not intended to be
a comprehensive reference source. To
complement the information in this data
sheet, refer to Section 2. “CPU”
(DS60001113), which is available from the
Documentation > Reference Manual
section of the Microchip PIC32 web site
(www.microchip.com/pic32). Resources
for the MIPS32® M4K® Processor Core
are available at: www.imgtec.com.

The MIPS32® M4K® Processor Core is the heart of the
PIC32MX1XX/2XX family processor. The CPU fetches
instructions, decodes each instruction, fetches source
operands, executes each instruction and writes the
results of instruction execution to the destinations.

3.1

Features

• 5-stage pipeline
• 32-bit address and data paths
• MIPS32 Enhanced Architecture (Release 2)
- Multiply-accumulate and multiply-subtract
instructions
- Targeted multiply instruction
- Zero/One detect instructions
- WAIT instruction
- Conditional move instructions (MOVN, MOVZ)
- Vectored interrupts
- Programmable exception vector base
- Atomic interrupt enable/disable
- Bit field manipulation instructions

FIGURE 3-1:

• MIPS16e® code compression
- 16-bit encoding of 32-bit instructions to
improve code density
- Special PC-relative instructions for efficient
loading of addresses and constants
- SAVE and RESTORE macro instructions for
setting up and tearing down stack frames
within subroutines
- Improved support for handling 8 and 16-bit
data types
• Simple Fixed Mapping Translation (FMT)
mechanism
• Simple dual bus interface
- Independent 32-bit address and data buses
- Transactions can be aborted to improve
interrupt latency
• Autonomous multiply/divide unit
- Maximum issue rate of one 32x16 multiply
per clock
- Maximum issue rate of one 32x32 multiply
every other clock
- Early-in iterative divide. Minimum 11 and
maximum 33 clock latency (dividend (rs) sign
extension-dependent)
• Power control
- Minimum frequency: 0 MHz
- Low-Power mode (triggered by WAIT
instruction)
- Extensive use of local gated clocks
• EJTAG debug and instruction trace
- Support for single stepping
- Virtual instruction and data address/value
- Breakpoints

MIPS32® M4K® PROCESSOR CORE BLOCK DIAGRAM

CPU

EJTAG

MDU

TAP
Execution Core
(RF/ALU/Shift)

System
Co-processor

 2011-2018 Microchip Technology Inc.

FMT

Bus Interface

Off-chip Debug Interface

Dual Bus Interface

Bus Matrix

Power
Management

DS60001168K-page 35

PIC32MX1XX/2XX 28/36/44-PIN FAMILY
3.2

3.2.2

Architecture Overview

The MIPS32 M4K processor core contains several
logic blocks working together in parallel, providing an
efficient high-performance computing engine. The
following blocks are included with the core:
•
•
•
•
•
•
•
•

Execution Unit
Multiply/Divide Unit (MDU)
System Control Coprocessor (CP0)
Fixed Mapping Translation (FMT)
Dual Internal Bus interfaces
Power Management
MIPS16e® Support
Enhanced JTAG (EJTAG) Controller

3.2.1

EXECUTION UNIT

The MIPS32 M4K processor core execution unit implements a load/store architecture with single-cycle ALU
operations (logical, shift, add, subtract) and an autonomous multiply/divide unit. The core contains thirty-two
32-bit General Purpose Registers (GPRs) used for
integer operations and address calculation. The register file consists of two read ports and one write port and
is fully bypassed to minimize operation latency in the
pipeline.
The execution unit includes:
• 32-bit adder used for calculating the data address
• Address unit for calculating the next instruction
address
• Logic for branch determination and branch target
address calculation
• Load aligner
• Bypass multiplexers used to avoid stalls when
executing instruction streams where data
producing instructions are followed closely by
consumers of their results
• Leading Zero/One detect unit for implementing
the CLZ and CLO instructions
• Arithmetic Logic Unit (ALU) for performing bitwise
logical operations
• Shifter and store aligner

TABLE 3-1:

MULTIPLY/DIVIDE UNIT (MDU)

The MIPS32 M4K processor core includes a Multiply/Divide Unit (MDU) that contains a separate pipeline
for multiply and divide operations. This pipeline operates in parallel with the Integer Unit (IU) pipeline and
does not stall when the IU pipeline stalls. This allows
MDU operations to be partially masked by system stalls
and/or other integer unit instructions.
The high-performance MDU consists of a 32x16 booth
recoded multiplier, result/accumulation registers (HI
and LO), a divide state machine, and the necessary
multiplexers and control logic. The first number shown
(‘32’ of 32x16) represents the rs operand. The second
number (‘16’ of 32x16) represents the rt operand. The
PIC32 core only checks the value of the latter (rt) operand to determine how many times the operation must
pass through the multiplier. The 16x16 and 32x16
operations pass through the multiplier once. A 32x32
operation passes through the multiplier twice.
The MDU supports execution of one 16x16 or 32x16
multiply operation every clock cycle; 32x32 multiply
operations can be issued every other clock cycle.
Appropriate interlocks are implemented to stall the
issuance of back-to-back 32x32 multiply operations.
The multiply operand size is automatically determined
by logic built into the MDU.
Divide operations are implemented with a simple 1 bit
per clock iterative algorithm. An early-in detection
checks the sign extension of the dividend (rs) operand.
If rs is 8 bits wide, 23 iterations are skipped. For a 16-bit
wide rs, 15 iterations are skipped and for a 24-bit wide
rs, 7 iterations are skipped. Any attempt to issue a subsequent MDU instruction while a divide is still active
causes an IU pipeline stall until the divide operation is
completed.
Table 3-1 lists the repeat rate (peak issue rate of cycles
until the operation can be reissued) and latency (number of cycles until a result is available) for the PIC32
core multiply and divide instructions. The approximate
latency and repeat rates are listed in terms of pipeline
clocks.

MIPS32® M4K® PROCESSOR CORE HIGH-PERFORMANCE INTEGER
MULTIPLY/DIVIDE UNIT LATENCIES AND REPEAT RATES
Opcode

MULT/MULTU, MADD/MADDU,
MSUB/MSUBU
MUL
DIV/DIVU

DS60001168K-page 36

Operand Size (mul rt) (div rs)

Latency

Repeat Rate

16 bits
32 bits
16 bits
32 bits
8 bits
16 bits
24 bits
32 bits

1
2
2
3
12
19
26
33

1
2
1
2
11
18
25
32

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PIC32MX1XX/2XX 28/36/44-PIN FAMILY
The MIPS architecture defines that the result of a
multiply or divide operation be placed in the HI and LO
registers. Using the Move-From-HI (MFHI) and MoveFrom-LO (MFLO) instructions, these values can be
transferred to the General Purpose Register file.
In addition to the HI/LO targeted operations, the
MIPS32® architecture also defines a multiply instruction, MUL, which places the least significant results in
the primary register file instead of the HI/LO register
pair. By avoiding the explicit MFLO instruction
required when using the LO register, and by supporting multiple destination registers, the throughput of
multiply-intensive operations is increased.
Two other instructions, Multiply-Add (MADD) and
Multiply-Subtract (MSUB), are used to perform the
multiply-accumulate and multiply-subtract operations.
The MADD instruction multiplies two numbers and then

TABLE 3-2:
Register
Number
0-6
7

adds the product to the current contents of the HI and
LO registers. Similarly, the MSUB instruction multiplies
two operands and then subtracts the product from the
HI and LO registers. The MADD and MSUB operations
are commonly used in DSP algorithms.

3.2.3

SYSTEM CONTROL
COPROCESSOR (CP0)

In the MIPS architecture, CP0 is responsible for the
virtual-to-physical address translation, the exception
control system, the processor’s diagnostics capability,
the operating modes (Kernel, User and Debug) and
whether interrupts are enabled or disabled. Configuration information, such as presence of options like
MIPS16e, is also available by accessing the CP0
registers, listed in Table 3-2.

COPROCESSOR 0 REGISTERS
Register
Name

Function

Reserved
HWREna

Reserved in the PIC32MX1XX/2XX family core.
Enables access via the RDHWR instruction to selected hardware registers.

8
9

BadVAddr(1)
Count(1)

Reports the address for the most recent address-related exception.
Processor cycle count.

10
11

Reserved
Compare(1)

Reserved in the PIC32MX1XX/2XX family core.
Timer interrupt control.

12
12

Status(1)
IntCtl(1)

Processor status and control.
Interrupt system status and control.

12
12

SRSCtl(1)
SRSMap(1)

Shadow register set status and control.
Provides mapping from vectored interrupt to a shadow set.

13
14

Cause(1)
EPC(1)

Cause of last general exception.
Program counter at last exception.

15
15

PRId
EBASE

Processor identification and revision.
Exception vector base register.

16
16

Config
Config1

Configuration register.
Configuration Register 1.

16
16

Config2
Config3

Configuration Register 2.
Configuration Register 3.

17-22
23

Reserved
Debug(2)

Reserved in the PIC32MX1XX/2XX family core.
Debug control and exception status.

24
25-29

DEPC(2)
Reserved

Program counter at last debug exception.
Reserved in the PIC32MX1XX/2XX family core.

ErrorEPC(1)
DESAVE(2)

Program counter at last error.
Debug handler scratchpad register.

30
31
Note 1:
2:

Registers used in exception processing.
Registers used during debug.

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DS60001168K-page 37

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Coprocessor 0 also contains the logic for identifying
and managing exceptions. Exceptions can be caused
by a variety of sources, including alignment errors in
data, external events or program errors. Table 3-3 lists
the exception types in order of priority.

TABLE 3-3:

MIPS32® M4K® PROCESSOR CORE EXCEPTION TYPES

Exception

Description

Reset

Assertion MCLR or a Power-on Reset (POR).

DSS

EJTAG debug single step.

DINT

EJTAG debug interrupt. Caused by the assertion of the external EJ_DINT input or by setting the
EjtagBrk bit in the ECR register.

NMI

Assertion of NMI signal.

Interrupt

Assertion of unmasked hardware or software interrupt signal.

DIB

EJTAG debug hardware instruction break matched.

AdEL

Fetch address alignment error.
Fetch reference to protected address.

IBE

Instruction fetch bus error.

DBp

EJTAG breakpoint (execution of SDBBP instruction).

Sys

Execution of SYSCALL instruction.

Bp

Execution of BREAK instruction.

RI

Execution of a reserved instruction.

CpU

Execution of a coprocessor instruction for a coprocessor that is not enabled.

CEU

Execution of a CorExtend instruction when CorExtend is not enabled.

Ov

Execution of an arithmetic instruction that overflowed.

Tr

Execution of a trap (when trap condition is true).

DDBL/DDBS

EJTAG Data Address Break (address only) or EJTAG data value break on store (address + value).

AdEL

Load address alignment error.
Load reference to protected address.

AdES

Store address alignment error.
Store to protected address.

DBE

Load or store bus error.

DDBL

EJTAG data hardware breakpoint matched in load data compare.

3.3

Power Management

The MIPS M4K processor core offers many power management features, including low-power design, active
power management and power-down modes of operation. The core is a static design that supports slowing or
Halting the clocks, which reduces system power consumption during Idle periods.

3.3.1

INSTRUCTION-CONTROLLED
POWER MANAGEMENT

The mechanism for invoking Power-Down mode is
through execution of the WAIT instruction. For more
information on power management, see Section 26.0
“Power-Saving Features”.

DS60001168K-page 38

3.4

EJTAG Debug Support

The MIPS M4K processor core provides an Enhanced
JTAG (EJTAG) interface for use in the software debug
of application and kernel code. In addition to standard
User mode and Kernel modes of operation, the M4K
core provides a Debug mode that is entered after a
debug exception (derived from a hardware breakpoint,
single-step exception, etc.) is taken and continues until
a Debug Exception Return (DERET) instruction is
executed. During this time, the processor executes the
debug exception handler routine.
The EJTAG interface operates through the Test Access
Port (TAP), a serial communication port used for transferring test data in and out of the core. In addition to the
standard JTAG instructions, special instructions
defined in the EJTAG specification define which
registers are selected and how they are used.

 2011-2018 Microchip Technology Inc.

PIC32MX1XX/2XX 28/36/44-PIN FAMILY
4.0
Note:

MEMORY ORGANIZATION
This data sheet summarizes the features
of the PIC32MX1XX/2XX 28/36/44-pin
Family of devices. It is not intended to be
a comprehensive reference source.For
detailed information, refer to Section 3.
“Memory Organization” (DS60001115),
which
is
available
from
the
Documentation > Reference Manual
section of the Microchip PIC32 web site
(www.microchip.com/pic32).

PIC32MX1XX/2XX 28/36/44-pin Family microcontrollers provide 4 GB unified virtual memory address
space. All memory regions, including program, data
memory, Special Function Registers (SFRs), and Configuration registers, reside in this address space at their
respective unique addresses. The program and data
memories can be optionally partitioned into user and
kernel memories. In addition, the data memory can be
made executable, allowing PIC32MX1XX/2XX
28/36/44-pin Family devices to execute from data
memory.

4.1

PIC32MX1XX/2XX 28/36/44-pin
Family Memory Layout

PIC32MX1XX/2XX 28/36/44-pin Family microcontrollers implement two address schemes: virtual and physical. All hardware resources, such as program memory,
data memory and peripherals, are located at their
respective physical addresses. Virtual addresses are
exclusively used by the CPU to fetch and execute
instructions as well as access peripherals. Physical
addresses are used by bus master peripherals, such as
DMA and the Flash controller, that access memory
independently of the CPU.
The memory maps for the PIC32MX1XX/2XX
28/36/44-pin Family devices are illustrated in
Figure 4-1 through Figure 4-6.
Table 4-1 provides SFR memory map details.

Key features include:
• 32-bit native data width
• Separate User (KUSEG) and Kernel
(KSEG0/KSEG1) mode address space
• Flexible program Flash memory partitioning
• Flexible data RAM partitioning for data and
program space
• Separate boot Flash memory for protected code
• Robust bus exception handling to intercept
runaway code
• Simple memory mapping with Fixed Mapping
Translation (FMT) unit
• Cacheable (KSEG0) and non-cacheable (KSEG1)
address regions

 2011-2018 Microchip Technology Inc.

DS60001168K-page 39

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FIGURE 4-1: MEMORY MAP ON RESET FOR PIC32MX110/210 DEVICES (4 KB RAM, 16 KB FLASH)
Virtual
Memory Map(1)
0xFFFFFFFF
0xBFC00C00
0xBFC00BFF
0xBFC00BF0

Physical
Memory Map(1)
0xFFFFFFFF

Reserved
Device
Configuration
Registers

0xBFC00BEF
Boot Flash
0xBFC00000
0xBF900000

Reserved

SFRs
0xBF800000
0xBD004000

KSEG1

0xBF8FFFFF
Reserved

Reserved

0xBD003FFF
Program Flash(2)
0xBD000000
0xA0001000

Reserved

0xA0000FFF
RAM(2)
0xA0000000
0x9FC00C00
0x9FC00BFF
0x9FC00BF0

0x1FC00C00
Device
Configuration
Registers

Reserved
Device
Configuration
Registers

0x1FC00BFF
0x1FC00BF0
0x1FC00BEF

Boot Flash
0x1FC00000

0x9FC00BEF
Boot Flash

Reserved

0x9FC00000

0x1F900000

Reserved
0x9D004000
0x9D003FFF

KSEG0

0x1F8FFFFF

Program Flash(2)

SFRs
0x1F800000
Reserved

0x9D000000
0x80001000

0x1D004000
Reserved

0x1D003FFF
Program Flash(2)
0x1D000000

0x80000FFF
RAM(2)
0x80000000
0x00000000
Note 1:
2:

DS60001168K-page 40

Reserved

Reserved
RAM(2)

0x00001000
0x00000FFF
0x00000000

Memory areas are not shown to scale.
The size of this memory region is programmable (see Section 3. “Memory Organization”
(DS60001115) in the “PIC32 Family Reference Manual”) and can be changed by initialization code provided by end-user development tools (refer to the specific development tool
documentation for information).

 2011-2018 Microchip Technology Inc.

PIC32MX1XX/2XX 28/36/44-PIN FAMILY
FIGURE 4-2: MEMORY MAP ON RESET FOR PIC32MX120/220 DEVICES (8 KB RAM, 32 KB FLASH)
Virtual
Memory Map(1)
0xFFFFFFFF
0xBFC00C00
0xBFC00BFF
0xBFC00BF0

Physical
Memory Map(1)
0xFFFFFFFF

Reserved
Device
Configuration
Registers

0xBFC00BEF
Boot Flash
0xBFC00000
0xBF900000

Reserved

0xBF8FFFFF
Reserved

0xBD008000

Reserved

KSEG1

SFRs
0xBF800000

0xBD007FFF
Program Flash(2)
0xBD000000
0xA0002000

Reserved

0xA0001FFF
RAM(2)
0xA0000000
0x9FC00C00
0x9FC00BFF
0x9FC00BF0

0x1FC00C00
Device
Configuration
Registers

Reserved
Device
Configuration
Registers

0x1FC00BFF
0x1FC00BF0
0x1FC00BEF

Boot Flash

0x9FC00BEF

0x1FC00000
Boot Flash

Reserved

0x9FC00000

0x1F900000
0x1F8FFFFF

0x9D007FFF
Program Flash(2)

SFRs
KSEG0

Reserved
0x9D008000

0x1F800000
Reserved

0x9D000000
0x80002000

0x1D008000
Reserved

0x1D007FFF
Program Flash(2)
0x1D000000

0x80001FFF
RAM(2)
0x80000000
0x00000000
Note 1:
2:

Reserved

Reserved
RAM(2)

0x00002000
0x00001FFF
0x00000000

Memory areas are not shown to scale.
The size of this memory region is programmable (see Section 3. “Memory Organization”
(DS60001115) in the “PIC32 Family Reference Manual”) and can be changed by initialization code provided by end-user development tools (refer to the specific development tool
documentation for information).

 2011-2018 Microchip Technology Inc.

DS60001168K-page 41

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FIGURE 4-3: MEMORY MAP ON RESET FOR PIC32MX130/230 DEVICES (16 KB RAM, 64 KB FLASH)
Virtual
Memory Map(1)
0xFFFFFFFF
0xBFC00C00
0xBFC00BFF
0xBFC00BF0

Physical
Memory Map(1)
0xFFFFFFFF

Reserved
Device
Configuration
Registers

0xBFC00BEF
Boot Flash
0xBFC00000
0xBF900000

Reserved

SFRs
0xBF800000
0xBD010000

KSEG1

0xBF8FFFFF
Reserved

Reserved

0xBD00FFFF
Program Flash(2)
0xBD000000
0xA0004000

Reserved

0xA0003FFF
RAM(2)
0xA0000000
0x9FC00C00
0x9FC00BFF
0x9FC00BF0

0x1FC00C00
Device
Configuration
Registers

Reserved
Device
Configuration
Registers

0x1FC00BFF
0x1FC00BF0
0x1FC00BEF

Boot Flash
0x1FC00000

0x9FC00BEF
Boot Flash

Reserved

0x9FC00000

0x1F900000

Reserved
0x9D010000
0x9D00FFFF

KSEG0

0x1F8FFFFF

Program Flash(2)

SFRs
0x1F800000
Reserved

0x9D000000
0x80004000

0x1D010000
Reserved

0x1D00FFFF
Program Flash(2)
0x1D000000

0x80003FFF
RAM(2)
0x80000000
0x00000000
Note 1:
2:

DS60001168K-page 42

Reserved

Reserved
RAM(2)

0x00004000
0x00003FFF
0x00000000

Memory areas are not shown to scale.
The size of this memory region is programmable (see Section 3. “Memory Organization”
(DS60001115) in the “PIC32 Family Reference Manual”) and can be changed by initialization code provided by end-user development tools (refer to the specific development tool
documentation for information).

 2011-2018 Microchip Technology Inc.

PIC32MX1XX/2XX 28/36/44-PIN FAMILY
FIGURE 4-4: MEMORY MAP ON RESET FOR PIC32MX150/250 DEVICES (32 KB RAM, 128 KB FLASH)
Virtual
Memory Map(1)
0xFFFFFFFF
0xBFC00C00
0xBFC00BFF
0xBFC00BF0

Physical
Memory Map(1)
0xFFFFFFFF

Reserved
Device
Configuration
Registers

0xBFC00BEF
Boot Flash
0xBFC00000
0xBF900000

Reserved

SFRs
0xBF800000
0xBD020000

Reserved

KSEG1

0xBF8FFFFF
Reserved

0xBD01FFFF
Program Flash(2)
0xBD000000
0xA0008000

Reserved

0xA0007FFF
RAM(2)
0xA0000000
0x9FC00C00
0x9FC00BFF
0x9FC00BF0

0x1FC00C00
Device
Configuration
Registers

Reserved
Device
Configuration
Registers

0x1FC00BFF
0x1FC00BF0
0x1FC00BEF

Boot Flash

0x9FC00BEF

0x1FC00000
Boot Flash

Reserved

0x9FC00000

0x1F900000

Reserved
0x9D020000
0x9D01FFFF

KSEG0

0x1F8FFFFF

Program Flash(2)

SFRs
0x1F800000
Reserved

0x9D000000
0x80008000

0x1D020000
Reserved

0x1D01FFFF
Program Flash(2)
0x1D000000

0x80007FFF
RAM(2)
0x80000000
0x00000000
Note 1:
2:

Reserved

Reserved
RAM(2)

0x00008000
0x00007FFF
0x00000000

Memory areas are not shown to scale.
The size of this memory region is programmable (see Section 3. “Memory Organization”
(DS60001115) in the “PIC32 Family Reference Manual”) and can be changed by initialization code provided by end-user development tools (refer to the specific development tool
documentation for information).

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DS60001168K-page 43

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FIGURE 4-5: MEMORY MAP ON RESET FOR PIC32MX170/270 DEVICES (64 KB RAM, 256 KB FLASH)
Virtual
Memory Map(1)
0xFFFFFFFF
0xBFC00C00
0xBFC00BFF
0xBFC00BF0

Physical
Memory Map(1)
0xFFFFFFFF

Reserved
Device
Configuration
Registers

0xBFC00BEF
Boot Flash
0xBFC00000
Reserved

0xBF900000

SFRs
0xBF800000

KSEG1

0xBF8FFFFF
Reserved

Reserved

0xBD040000
0xBD03FFFF

Program Flash(2)
0xBD000000
Reserved

0xA0010000
0xA000FFFF

RAM(2)
0xA0000000

0x1FC00C00

0x9FC00C00
0x9FC00BFF
0x9FC00BF0

Device
Configuration
Registers

Reserved
Device
Configuration
Registers

0x1FC00BFF
0x1FC00BF0
0x1FC00BEF

Boot Flash
0x1FC00000

0x9FC00BEF
Boot Flash

Reserved

0x9FC00000

0x1F900000

0x9D040000
0x9D03FFFF

KSEG0

0x1F8FFFFF
Reserved

Program Flash(2)

SFRs
0x1F800000
Reserved

0x9D000000
0x80010000

0x1D040000
Reserved

0x1D03FFFF
Program Flash(2)
0x1D000000

0x8000FFFF
RAM(2)
0x80000000
0x00000000
Note 1:
2:

DS60001168K-page 44

Reserved

Reserved
RAM(2)

0x00010000
0x0000FFFF
0x00000000

Memory areas are not shown to scale.
The size of this memory region is programmable (see Section 3. “Memory Organization”
(DS60001115) in the “PIC32 Family Reference Manual”) and can be changed by initialization code provided by end-user development tools (refer to the specific development tool
documentation for information).

 2011-2018 Microchip Technology Inc.

PIC32MX1XX/2XX 28/36/44-PIN FAMILY
FIGURE 4-6: MEMORY MAP ON RESET FOR PIC32MX130/230 DEVICES (16 KB RAM, 256 KB FLASH)
Virtual
Memory Map(1)
0xFFFFFFFF
0xBFC00C00
0xBFC00BFF
0xBFC00BF0

Physical
Memory Map(1)
0xFFFFFFFF

Reserved
Device
Configuration
Registers

0xBFC00BEF
Boot Flash
0xBFC00000
Reserved

0xBF900000

SFRs
0xBF800000

KSEG1

0xBF8FFFFF
Reserved

Reserved

0xBD040000
0xBD03FFFF

Program Flash(2)
0xBD000000
Reserved

0xA0004000
0xA0003FFF

RAM(2)
0xA0000000

0x1FC00C00

0x9FC00C00
0x9FC00BFF
0x9FC00BF0

Device
Configuration
Registers

Reserved
Device
Configuration
Registers

0x1FC00BFF
0x1FC00BF0
0x1FC00BEF

Boot Flash

0x9FC00BEF

0x1FC00000
Boot Flash

Reserved

0x9FC00000

0x1F900000

0x9D040000
0x9D03FFFF

KSEG0

0x1F8FFFFF
Reserved

Program Flash(2)

SFRs
0x1F800000
Reserved

0x9D000000
0x80004000

0x1D040000
Reserved

0x1D03FFFF
Program Flash(2)
0x1D000000

0x80003FFF
RAM(2)
0x80000000
0x00000000
Note 1:
2:

Reserved

Reserved
RAM(2)

0x00004000
0x00003FFF
0x00000000

Memory areas are not shown to scale.
The size of this memory region is programmable (see Section 3. “Memory Organization”
(DS60001115) in the “PIC32 Family Reference Manual”) and can be changed by initialization code provided by end-user development tools (refer to the specific development tool
documentation for information).

 2011-2018 Microchip Technology Inc.

DS60001168K-page 45

PIC32MX1XX/2XX 28/36/44-PIN FAMILY
TABLE 4-1:

SFR MEMORY MAP
Virtual Address

Peripheral
Base

Offset
Start

Watchdog Timer

0x0000

RTCC

0x0200

Timer1-5

0x0600

Input Capture 1-5

0x2000

Output Compare 1-5

0x3000

IC1 and IC2

0x5000

SPI1 and SPI2

0x5800

UART1 and UART2

0x6000

PMP
ADC

0x7000
0xBF80

0x9000

CVREF

0x9800

Comparator

0xA000

CTMU

0xA200

Oscillator

0xF000

Device and Revision ID

0xF220

Peripheral Module Disable

0xF240

Flash Controller

0xF400

Reset

0xF600

PPS

0xFA04

Interrupts

0x1000

Bus Matrix

0x2000

DMA

0x3000

0xBF88

USB

0x5050

PORTA-PORTC

0x6000

Configuration

DS60001168K-page 46

0xBFC0

0x0BF0

 2011-2018 Microchip Technology Inc.

Bus Matrix Control Registers

BMXCON(1)

2010 BMXDKPBA(1)
2020 BMXDUDBA(1)
2030 BMXDUPBA(1)
2040 BMXDRMSZ
2050 BMXPUPBA(1)
2060

BMXPFMSZ

2070 BMXBOOTSZ

Bits

31/15

30/14

29/13

28/12

27/11

26/10

25/9

24/8

23/7

31:16

—

—

—

—

—

—

—

—

15:0

—

—

—

—

—

—

—

—

31:16

—

—

—

—

—

—

—

—

15:0
31:16

15:0
31:16
15:0

—

—

—

BMXWSDRM

—

—

—

—

—

—

—

—

—

—

—

0000

—

—

—

—

—

—

0000

—

—

—

—

—

—

0000

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

19/3

18/2

17/1

16/0

BMXERRIXI BMXERRICD BMXERRDMA BMXERRDS BMXERRIS 001F
BMXARB<2:0>

0041

—

0000

BMXDUDBA<15:0>
—

0000

BMXDUPBA<15:0>

0000
xxxx

BMXDRMSZ<31:0>

15:0
15:0

—

—

15:0

31:16

21/5

—

31:16
31:16

22/6

BMXDKPBA<15:0>

15:0
31:16

20/4

All
Resets

Register
Name

2000

BUS MATRIX REGISTER MAP
Bit Range

Virtual Address
(BF88_#)

TABLE 4-2:

xxxx
—

—

—

—

—

—

—

—

—

—

BMXPUPBA<15:0>
BMXPFMSZ<31:0>

—

—

BMXPUPBA<19:16>

0000
0000
xxxx
xxxx

BMXBOOTSZ<31:0>

0000
0C00

Legend:

x = unknown value on Reset; — = unimplemented, read as ‘0’. Reset values are shown in hexadecimal.

Note 1:

This register has corresponding CLR, SET and INV registers at its virtual address, plus an offset of 0x4, 0x8 and 0xC, respectively. See Section 11.2 “CLR, SET and INV Registers” for more information.

DS60001168K-page 47

PIC32MX1XX/2XX 28/36/44-PIN FAMILY

 2011-2018 Microchip Technology Inc.

4.2

PIC32MX1XX/2XX 28/36/44-PIN FAMILY
REGISTER 4-1:
Bit
Range

BMXCON: BUS MATRIX CONFIGURATION REGISTER

Bit
31/23/15/7

Bit
30/22/14/6

Bit
29/21/13/5

Bit
28/20/12/4

Bit
27/19/11/3

Bit
26/18/10/2

Bit
25/17/9/1

Bit
24/16/8/0

U-0

U-0

U-0

U-0

U-0

U-0

U-0

U-0

—

—

—

—

—

—

—

—

U-0

U-0

U-0

R/W-1

R/W-1

R/W-1

R/W-1

R/W-1

BMX
ERRICD

BMX
ERRDMA

BMX
ERRDS

BMX
ERRIS
U-0

31:24
23:16
15:8
7:0

—

—

—

BMX
ERRIXI

U-0

U-0

U-0

U-0

U-0

U-0

U-0

—

—

—

—

—

—

—

—

U-0

R/W-1

U-0

U-0

U-0

R/W-0

R/W-0

R/W-1

—

BMX
WSDRM

—

—

—

BMXARB<2:0>

Legend:
R = Readable bit

W = Writable bit

U = Unimplemented bit, read as ‘0’

-n = Value at POR

‘1’ = Bit is set

‘0’ = Bit is cleared

bit 31-21 Unimplemented: Read as ‘0’
bit 20

BMXERRIXI: Enable Bus Error from IXI bit
1 = Enable bus error exceptions for unmapped address accesses initiated from IXI shared bus
0 = Disable bus error exceptions for unmapped address accesses initiated from IXI shared bus

bit 19

BMXERRICD: Enable Bus Error from ICD Debug Unit bit
1 = Enable bus error exceptions for unmapped address accesses initiated from ICD
0 = Disable bus error exceptions for unmapped address accesses initiated from ICD

bit 18

BMXERRDMA: Bus Error from DMA bit
1 = Enable bus error exceptions for unmapped address accesses initiated from DMA
0 = Disable bus error exceptions for unmapped address accesses initiated from DMA

bit 17

BMXERRDS: Bus Error from CPU Data Access bit (disabled in Debug mode)
1 = Enable bus error exceptions for unmapped address accesses initiated from CPU data access
0 = Disable bus error exceptions for unmapped address accesses initiated from CPU data access

bit 16

BMXERRIS: Bus Error from CPU Instruction Access bit (disabled in Debug mode)
1 = Enable bus error exceptions for unmapped address accesses initiated from CPU instruction access
0 = Disable bus error exceptions for unmapped address accesses initiated from CPU instruction access

bit 15-7

Unimplemented: Read as ‘0’

bit 6

BMXWSDRM: CPU Instruction or Data Access from Data RAM Wait State bit
1 = Data RAM accesses from CPU have one wait state for address setup
0 = Data RAM accesses from CPU have zero wait states for address setup

bit 5-3

Unimplemented: Read as ‘0’

bit 2-0

BMXARB<2:0>: Bus Matrix Arbitration Mode bits
111 = Reserved (using these Configuration modes will produce undefined behavior)
•
•
•

011 = Reserved (using these Configuration modes will produce undefined behavior)
010 = Arbitration Mode 2
001 = Arbitration Mode 1 (default)
000 = Arbitration Mode 0

DS60001168K-page 48

 2011-2018 Microchip Technology Inc.

PIC32MX1XX/2XX 28/36/44-PIN FAMILY
REGISTER 4-2:
Bit
Range
31:24
23:16
15:8

Bit
31/23/15/7

Bit
30/22/14/6

Bit
29/21/13/5

U-0

U-0

U-0

U-0

—

—

—

—

U-0

U-0

U-0

—

—

—

R/W-0

R/W-0

R/W-0

Bit
Bit
28/20/12/4 27/19/11/3

Bit
26/18/10/2

Bit
25/17/9/1

Bit
24/16/8/0

U-0

U-0

U-0

U-0

—

—

—

—

U-0

U-0

U-0

U-0

U-0

—

—

—

—

—

R/W-0

R/W-0

R/W-0

R-0

R-0

R-0

R-0

R-0

BMXDKPBA<15:8>
R-0

7:0

BMXDKPBA: DATA RAM KERNEL PROGRAM BASE ADDRESS REGISTER

R-0

R-0

R-0

R-0

BMXDKPBA<7:0>

Legend:
R = Readable bit

W = Writable bit

U = Unimplemented bit, read as ‘0’

-n = Value at POR

‘1’ = Bit is set

‘0’ = Bit is cleared

x = Bit is unknown

bit 31-16 Unimplemented: Read as ‘0’
bit 15-10 BMXDKPBA<15:10>: DRM Kernel Program Base Address bits
When non-zero, this value selects the relative base address for kernel program space in RAM
bit 9-0

BMXDKPBA<9:0>: Read-Only bits
This value is always ‘0’, which forces 1 KB increments

Note 1:

At Reset, the value in this register is forced to zero, which causes all of the RAM to be allocated to Kernal
mode data usage.
The value in this register must be less than or equal to BMXDRMSZ.

2:

 2011-2018 Microchip Technology Inc.

DS60001168K-page 49

PIC32MX1XX/2XX 28/36/44-PIN FAMILY
REGISTER 4-3:
Bit
Range
31:24
23:16
15:8
7:0

BMXDUDBA: DATA RAM USER DATA BASE ADDRESS REGISTER

Bit
31/23/15/7

Bit
30/22/14/6

Bit
29/21/13/5

U-0

U-0

U-0

Bit
Bit
28/20/12/4 27/19/11/3
U-0

Bit
26/18/10/2

Bit
25/17/9/1

Bit
24/16/8/0

U-0

U-0

U-0

U-0

—

—

—

—

—

—

—

—

U-0

U-0

U-0

U-0

U-0

U-0

U-0

U-0

—

—

—

—

—

—

—

—

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

R-0

R-0

R-0

R-0

R-0

R-0

R-0

R-0

BMXDUDBA<15:8>
R-0

R-0

BMXDUDBA<7:0>

Legend:
R = Readable bit

W = Writable bit

U = Unimplemented bit, read as ‘0’

-n = Value at POR

‘1’ = Bit is set

‘0’ = Bit is cleared

x = Bit is unknown

bit 31-16 Unimplemented: Read as ‘0’
bit 15-10 BMXDUDBA<15:10>: DRM User Data Base Address bits
When non-zero, the value selects the relative base address for User mode data space in RAM, the value
must be greater than BMXDKPBA.
bit 9-0

BMXDUDBA<9:0>: Read-Only bits
This value is always ‘0’, which forces 1 KB increments

Note 1:

At Reset, the value in this register is forced to zero, which causes all of the RAM to be allocated to Kernal
mode data usage.
The value in this register must be less than or equal to BMXDRMSZ.

2:

DS60001168K-page 50

 2011-2018 Microchip Technology Inc.

PIC32MX1XX/2XX 28/36/44-PIN FAMILY
REGISTER 4-4:
Bit
Range
31:24
23:16
15:8

Bit
31/23/15/7

Bit
30/22/14/6

Bit
29/21/13/5

U-0

U-0

U-0

U-0

—

—

—

—

U-0

U-0

U-0

—

—

—

R/W-0

R/W-0

R/W-0

Bit
Bit
28/20/12/4 27/19/11/3

Bit
26/18/10/2

Bit
25/17/9/1

Bit
24/16/8/0

U-0

U-0

U-0

U-0

—

—

—

—

U-0

U-0

U-0

U-0

U-0

—

—

—

—

—

R/W-0

R/W-0

R/W-0

R-0

R-0

R-0

R-0

R-0

BMXDUPBA<15:8>
R-0

7:0

BMXDUPBA: DATA RAM USER PROGRAM BASE ADDRESS REGISTER

R-0

R-0

R-0

R-0

BMXDUPBA<7:0>

Legend:
R = Readable bit

W = Writable bit

U = Unimplemented bit, read as ‘0’

-n = Value at POR

‘1’ = Bit is set

‘0’ = Bit is cleared

x = Bit is unknown

bit 31-16 Unimplemented: Read as ‘0’
bit 15-10 BMXDUPBA<15:10>: DRM User Program Base Address bits
When non-zero, the value selects the relative base address for User mode program space in RAM,
BMXDUPBA must be greater than BMXDUDBA.
bit 9-0

BMXDUPBA<9:0>: Read-Only bits
This value is always ‘0’, which forces 1 KB increments

Note 1:

At Reset, the value in this register is forced to zero, which causes all of the RAM to be allocated to Kernal
mode data usage.
The value in this register must be less than or equal to BMXDRMSZ.

2:

 2011-2018 Microchip Technology Inc.

DS60001168K-page 51

PIC32MX1XX/2XX 28/36/44-PIN FAMILY
REGISTER 4-5:
Bit
Range
31:24
23:16
15:8
7:0

BMXDRMSZ: DATA RAM SIZE REGISTER

Bit
31/23/15/7

Bit
30/22/14/6

Bit
29/21/13/5

R

R

R

R

R

R

Bit
Bit
28/20/12/4 27/19/11/3
R

Bit
26/18/10/2

Bit
25/17/9/1

Bit
24/16/8/0

R

R

R

R

R

R

R

R

R

R

R

R

R

BMXDRMSZ<31:24>
R

R

BMXDRMSZ<23:16>
R

R

R

R

R

R

R

R

BMXDRMSZ<15:8>
R

R

BMXDRMSZ<7:0>

Legend:
R = Readable bit

W = Writable bit

U = Unimplemented bit, read as ‘0’

-n = Value at POR

‘1’ = Bit is set

‘0’ = Bit is cleared

bit 31-0

BMXDRMSZ<31:0>: Data RAM Memory (DRM) Size bits
Static value that indicates the size of the Data RAM in bytes:
0x00001000 = Device has 4 KB RAM
0x00002000 = Device has 8 KB RAM
0x00004000 = Device has 16 KB RAM
0x00008000 = Device has 32 KB RAM
0x00010000 = Device has 64 KB RAM

REGISTER 4-6:
Bit
Range
31:24
23:16
15:8
7:0

x = Bit is unknown

BMXPUPBA: PROGRAM FLASH (PFM) USER PROGRAM BASE ADDRESS
REGISTER

Bit
31/23/15/7

Bit
30/22/14/6

Bit
29/21/13/5

U-0

U-0

U-0

Bit
Bit
28/20/12/4 27/19/11/3
U-0

Bit
26/18/10/2

Bit
25/17/9/1

Bit
24/16/8/0

U-0

U-0

U-0

U-0

—

—

—

—

—

—

—

—

U-0

U-0

U-0

U-0

R/W-0

R/W-0

R/W-0

R/W-0

—

—

—

—

R/W-0

R/W-0

R/W-0

R/W-0

R-0

R-0

R-0

BMXPUPBA<19:16>
R/W-0

R-0

R-0

R-0

R-0

R-0

R-0

BMXPUPBA<15:8>
R-0

R-0

BMXPUPBA<7:0>

Legend:
R = Readable bit

W = Writable bit

U = Unimplemented bit, read as ‘0’

-n = Value at POR

‘1’ = Bit is set

‘0’ = Bit is cleared

x = Bit is unknown

bit 31-20 Unimplemented: Read as ‘0’
bit 19-11 BMXPUPBA<19:11>: Program Flash (PFM) User Program Base Address bits
bit 10-0

BMXPUPBA<10:0>: Read-Only bits
This value is always ‘0’, which forces 2 KB increments

Note 1:

At Reset, the value in this register is forced to zero, which causes all of the RAM to be allocated to Kernal
mode data usage.
The value in this register must be less than or equal to BMXPFMSZ.

2:

DS60001168K-page 52

 2011-2018 Microchip Technology Inc.

PIC32MX1XX/2XX 28/36/44-PIN FAMILY
REGISTER 4-7:
Bit
Range
31:24
23:16
15:8
7:0

BMXPFMSZ: PROGRAM FLASH (PFM) SIZE REGISTER

Bit
31/23/15/7

Bit
30/22/14/6

Bit
29/21/13/5

R

R

R

Bit
Bit
28/20/12/4 27/19/11/3
R

Bit
26/18/10/2

Bit
25/17/9/1

Bit
24/16/8/0

R

R

R

R

R

R

R

R

R

R

R

R

R

BMXPFMSZ<31:24>
R

R

R

R

R

BMXPFMSZ<23:16>
R

R

R

R

R

BMXPFMSZ<15:8>
R

R

R

R

R

BMXPFMSZ<7:0>

Legend:
R = Readable bit

W = Writable bit

U = Unimplemented bit, read as ‘0’

-n = Value at POR

‘1’ = Bit is set

‘0’ = Bit is cleared

bit 31-0

BMXPFMSZ<31:0>: Program Flash Memory (PFM) Size bits
Static value that indicates the size of the PFM in bytes:
0x00004000 = Device has 16 KB Flash
0x00008000 = Device has 32 KB Flash
0x00010000 = Device has 64 KB Flash
0x00020000 = Device has 128 KB Flash
0x00040000 = Device has 256 KB Flash

REGISTER 4-8:
Bit
Range
31:24
23:16
15:8
7:0

x = Bit is unknown

BMXBOOTSZ: BOOT FLASH (IFM) SIZE REGISTER

Bit
31/23/15/7

Bit
30/22/14/6

Bit
29/21/13/5

R

R

R

Bit
Bit
28/20/12/4 27/19/11/3
R

Bit
26/18/10/2

Bit
25/17/9/1

Bit
24/16/8/0

R

R

R

R

R

R

R

R

R

R

R

R

R

BMXBOOTSZ<31:24>
R

R

R

R

R

BMXBOOTSZ<23:16>
R

R

R

R

R

BMXBOOTSZ<15:8>
R

R

R

R

R

BMXBOOTSZ<7:0>

Legend:
R = Readable bit

W = Writable bit

U = Unimplemented bit, read as ‘0’

-n = Value at POR

‘1’ = Bit is set

‘0’ = Bit is cleared

bit 31-0

x = Bit is unknown

BMXBOOTSZ<31:0>: Boot Flash Memory (BFM) Size bits
Static value that indicates the size of the Boot PFM in bytes:
0x00000C00 = Device has 3 KB boot Flash

 2011-2018 Microchip Technology Inc.

DS60001168K-page 53

PIC32MX1XX/2XX 28/36/44-PIN FAMILY
NOTES:

DS60001168K-page 54

 2011-2018 Microchip Technology Inc.

PIC32MX1XX/2XX 28/36/44-PIN FAMILY
5.0
Note:

FLASH PROGRAM MEMORY
This data sheet summarizes the features
of the PIC32MX1XX/2XX 28/36/44-pin
Family of devices. It is not intended to be
a comprehensive reference source. To
complement the information in this data
sheet, refer to Section 5. “Flash
Program Memory” (DS60001121), which
is available from the Documentation >
Reference Manual section of the
Microchip
PIC32
web
site
(www.microchip.com/pic32).

PIC32MX1XX/2XX 28/36/44-pin Family devices contain an internal Flash program memory for executing
user code. There are three methods by which the user
can program this memory:
• Run-Time Self-Programming (RTSP)
• EJTAG Programming
• In-Circuit Serial Programming™ (ICSP™)

 2011-2018 Microchip Technology Inc.

RTSP is performed by software executing from either
Flash or RAM memory. Information about RTSP
techniques is available in Section 5. “Flash Program
Memory” (DS60001121) in the “PIC32 Family
Reference Manual”.
EJTAG is performed using the EJTAG port of the
device and an EJTAG capable programmer.
ICSP is performed using a serial data connection to the
device and allows much faster programming times than
RTSP.
The EJTAG and ICSP methods are described in the
“PIC32
Flash
Programming
Specification”
(DS60001145), which can be downloaded from the
Microchip web site.
Note:

The Flash page size on PIC32MX1XX/2XX 28/36/44-pin Family devices is 1
KB and the row size is 128 bytes (256 IW
and 32 IW, respectively).

DS60001168K-page 55

Flash Controller Control Registers

Virtual Address
(BF80_#)

Register
Name

TABLE 5-1:

F400

NVMCON(1)

F410

NVMKEY

F420

NVMADDR(1)

F430

NVMDATA

FLASH CONTROLLER REGISTER MAP

F440 NVMSRCADDR

31/15

30/14

29/13

31:16

—

—

—

15:0

WR

WREN

WRERR

31:16
15:0
31:16
15:0
31:16
15:0
31:16

28/12

27/11

26/10

25/9

24/8

23/7

22/6

21/5

20/4

19/3

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

LVDERR LVDSTAT

NVMKEY<31:0>
NVMADDR<31:0>
NVMDATA<31:0>

18/2

17/1

16/0

—

—

—

NVMOP<3:0>

All Resets

Bit Range

Bits

0000
0000
0000
0000
0000
0000
0000
0000
0000

Legend:

NVMSRCADDR<31:0>
15:0
x = unknown value on Reset; — = unimplemented, read as ‘0’. Reset values are shown in hexadecimal.

Note 1:

This register has corresponding CLR, SET and INV registers at its virtual address, plus offsets of 0x4, 0x8 and 0xC, respectively. See Section 11.2 “CLR, SET and INV Registers” for more information.

0000

 2011-2018 Microchip Technology Inc.

PIC32MX1XX/2XX 28/36/44-PIN FAMILY

DS60001168K-page 56

5.1

PIC32MX1XX/2XX 28/36/44-PIN FAMILY
REGISTER 5-1:
Bit
Range

NVMCON: PROGRAMMING CONTROL REGISTER

Bit
31/23/15/7

Bit
30/22/14/6

Bit
29/21/13/5

Bit
28/20/12/4

Bit
27/19/11/3

Bit
26/18/10/2

Bit
25/17/9/1

Bit
24/16/8/0

U-0

U-0

U-0

U-0

U-0

U-0

U-0

U-0

—

—

—

—

—

—

—

—

U-0

U-0

U-0

U-0

U-0

U-0

U-0

U-0

31:24
23:16
15:8
7:0

—

—

—

—

—

—

—

—

R/W-0

R/W-0

R-0

R-0

R-0

U-0

U-0

U-0

WR

WREN

WRERR(1)

U-0

U-0

U-0

U-0

—

—

—

—

Legend:
R = Readable bit
-n = Value at POR

LVDERR(1) LVDSTAT(1)

W = Writable bit
‘1’ = Bit is set

R/W-0

—

—

—

R/W-0

R/W-0

R/W-0

NVMOP<3:0>

U = Unimplemented bit, read as ‘0’
‘0’ = Bit is cleared
x = Bit is unknown

bit 31-16 Unimplemented: Read as ‘0’
bit 15
WR: Write Control bit
This bit is writable when WREN = 1 and the unlock sequence is followed.
1 = Initiate a Flash operation. Hardware clears this bit when the operation completes
0 = Flash operation is complete or inactive
bit 14
WREN: Write Enable bit
This is the only bit in this register reset by a device Reset.
1 = Enable writes to WR bit and enables LVD circuit
0 = Disable writes to WR bit and disables LVD circuit
bit 13
WRERR: Write Error bit(1)
This bit is read-only and is automatically set by hardware.
1 = Program or erase sequence did not complete successfully
0 = Program or erase sequence completed normally
bit 12
LVDERR: Low-Voltage Detect Error bit (LVD circuit must be enabled)(1)
This bit is read-only and is automatically set by hardware.
1 = Low-voltage detected (possible data corruption, if WRERR is set)
0 = Voltage level is acceptable for programming
bit 11
LVDSTAT: Low-Voltage Detect Status bit (LVD circuit must be enabled)(1)
This bit is read-only and is automatically set and cleared by the hardware.
1 = Low-voltage event is active
0 = Low-voltage event is not active
bit 10-4 Unimplemented: Read as ‘0’
bit 3-0
NVMOP<3:0>: NVM Operation bits
These bits are writable when WREN = 0.
1111 = Reserved
•
•
•

0111 = Reserved
0110 = No operation
0101 = Program Flash Memory (PFM) erase operation: erases PFM, if all pages are not write-protected
0100 = Page erase operation: erases page selected by NVMADDR, if it is not write-protected
0011 = Row program operation: programs row selected by NVMADDR, if it is not write-protected
0010 = No operation
0001 = Word program operation: programs word selected by NVMADDR, if it is not write-protected
0000 = No operation
Note 1:

This bit is cleared by setting NVMOP == ‘b0000, and initiating a Flash operation (i.e., WR).

 2011-2018 Microchip Technology Inc.

DS60001168K-page 57

PIC32MX1XX/2XX 28/36/44-PIN FAMILY
REGISTER 5-2:
Bit
Range
31:24
23:16
15:8
7:0

NVMKEY: PROGRAMMING UNLOCK REGISTER

Bit
31/23/15/7

Bit
30/22/14/6

Bit
29/21/13/5

W-0

W-0

W-0

Bit
Bit
28/20/12/4 27/19/11/3
W-0

Bit
26/18/10/2

Bit
25/17/9/1

Bit
24/16/8/0

W-0

W-0

W-0

W-0

W-0

W-0

W-0

W-0

W-0

W-0

W-0

W-0

W-0

NVMKEY<31:24>
W-0

W-0

W-0

W-0

W-0

W-0

W-0

W-0

W-0

NVMKEY<23:16>
W-0

NVMKEY<15:8>
W-0

W-0

W-0

W-0

W-0

NVMKEY<7:0>

Legend:
R = Readable bit

W = Writable bit

U = Unimplemented bit, read as ‘0’

-n = Value at POR

‘1’ = Bit is set

‘0’ = Bit is cleared

bit 31-0

Note:

NVMKEY<31:0>: Unlock Register bits
These bits are write-only, and read as ‘0’ on any read
This register is used as part of the unlock sequence to prevent inadvertent writes to the PFM.

REGISTER 5-3:
Bit
Range
31:24
23:16
15:8
7:0

x = Bit is unknown

NVMADDR: FLASH ADDRESS REGISTER

Bit
31/23/15/7

Bit
30/22/14/6

Bit
29/21/13/5

R/W-0

R/W-0

R/W-0

Bit
Bit
28/20/12/4 27/19/11/3
R/W-0

R/W-0

Bit
26/18/10/2

Bit
25/17/9/1

Bit
24/16/8/0

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

NVMADDR<31:24>
R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

NVMADDR<23:16>
R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

NVMADDR<15:8>
R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

NVMADDR<7:0>

Legend:
R = Readable bit

W = Writable bit

U = Unimplemented bit, read as ‘0’

-n = Value at POR

‘1’ = Bit is set

‘0’ = Bit is cleared

bit 31-0

x = Bit is unknown

NVMADDR<31:0>: Flash Address bits
Bulk/Chip/PFM Erase: Address is ignored.
Page Erase: Address identifies the page to erase.
Row Program: Address identifies the row to program.
Word Program: Address identifies the word to program.

DS60001168K-page 58

 2011-2018 Microchip Technology Inc.

PIC32MX1XX/2XX 28/36/44-PIN FAMILY
REGISTER 5-4:
Bit
Range
31:24
23:16
15:8
7:0

NVMDATA: FLASH PROGRAM DATA REGISTER

Bit
31/23/15/7

Bit
30/22/14/6

Bit
29/21/13/5

R/W-0

R/W-0

R/W-0

Bit
Bit
28/20/12/4 27/19/11/3
R/W-0

Bit
26/18/10/2

Bit
25/17/9/1

Bit
24/16/8/0

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

NVMDATA<31:24>
R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

NVMDATA<23:16>
R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

NVMDATA<15:8>
R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

NVMDATA<7:0>

Legend:
R = Readable bit

W = Writable bit

U = Unimplemented bit, read as ‘0’

-n = Value at POR

‘1’ = Bit is set

‘0’ = Bit is cleared

bit 31-0
Note:

NVMDATA<31:0>: Flash Programming Data bits
The bits in this register are only reset by a Power-on Reset (POR).

REGISTER 5-5:
Bit
Range
31:24
23:16
15:8
7:0

x = Bit is unknown

NVMSRCADDR: SOURCE DATA ADDRESS REGISTER

Bit
31/23/15/7

Bit
30/22/14/6

Bit
29/21/13/5

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

Bit
Bit
28/20/12/4 27/19/11/3
R/W-0

R/W-0

Bit
26/18/10/2

Bit
25/17/9/1

Bit
24/16/8/0

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

NVMSRCADDR<31:24>
R/W-0

R/W-0

NVMSRCADDR<23:16>
R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

NVMSRCADDR<15:8>
R/W-0

R/W-0

NVMSRCADDR<7:0>

Legend:
R = Readable bit

W = Writable bit

U = Unimplemented bit, read as ‘0’

-n = Value at POR

‘1’ = Bit is set

‘0’ = Bit is cleared

bit 31-0

x = Bit is unknown

NVMSRCADDR<31:0>: Source Data Address bits
The system physical address of the data to be programmed into the Flash when the NVMOP<3:0> bits
(NVMCON<3:0>) are set to perform row programming.

 2011-2018 Microchip Technology Inc.

DS60001168K-page 59

PIC32MX1XX/2XX 28/36/44-PIN FAMILY
NOTES:

DS60001168K-page 60

 2011-2018 Microchip Technology Inc.

PIC32MX1XX/2XX 28/36/44-PIN FAMILY
6.0
Note:

RESETS
This data sheet summarizes the features
of the PIC32MX1XX/2XX 28/36/44-pin
Family of devices. It is not intended to be
a comprehensive reference source. To
complement the information in this data
sheet, refer to Section 7. “Resets”
(DS60001118), which is available from the
Documentation > Reference Manual
section of the Microchip PIC32 web site
(www.microchip.com/pic32).

FIGURE 6-1:

The Reset module combines all Reset sources and
controls the device Master Reset signal, SYSRST. The
following is a list of device Reset sources:
•
•
•
•
•
•

Power-on Reset (POR)
Master Clear Reset pin (MCLR)
Software Reset (SWR)
Watchdog Timer Reset (WDTR)
Brown-out Reset (BOR)
Configuration Mismatch Reset (CMR)

A simplified block diagram of the Reset module is
illustrated in Figure 6-1.

SYSTEM RESET BLOCK DIAGRAM
MCLR
Glitch Filter
Sleep or Idle

WDTR
WDT
Time-out

Voltage
Regulator
Enabled
VDD

MCLR

Power-up
Timer

POR

Brown-out
Reset

BOR

SYSRST

VDD Rise
Detect

Configuration
Mismatch
Reset
Software Reset

 2011-2018 Microchip Technology Inc.

CMR
SWR

DS60001168K-page 61

Reset Control Registers

Virtual Address
(BF80_#)

Register
Name(1)

TABLE 6-1:

F600

RCON

Legend:
1:
2:

31/15

30/14

29/13

28/12

27/11

26/10

31:16

—

—

—

—

—

—

—

—

15:0

—
—

—
—

—
—

—
—

—
—

—
—

CMR
—

VREGS
—

31:16

25/9

24/8

23/7

22/6

21/5

—

—

—

—

—

—

—

—

0000

EXTR
—

SWR
—

—
—

WDTO
—

SLEEP
—

IDLE
—

BOR
—

POR
—

xxxx(2)
0000

—

—

—

—

—

—

SWRST

0000

15:0
—
—
—
—
—
—
—
—
—
x = unknown value on Reset; — = unimplemented, read as ‘0’. Reset values are shown in hexadecimal.

20/4

19/3

18/2

17/1

16/0

All Resets

Bit Range

Bits

F610 RSWRST

Note

RESET CONTROL REGISTER MAP

All registers in this table have corresponding CLR, SET and INV registers at their virtual addresses, plus offsets of 0x4, 0x8 and 0xC, respectively. See Section 11.2 “CLR, SET and INV Registers” for
more information.
Reset values are dependent on the DEVCFGx Configuration bits and the type of reset.

 2011-2018 Microchip Technology Inc.

PIC32MX1XX/2XX 28/36/44-PIN FAMILY

DS60001168K-page 62

6.1

PIC32MX1XX/2XX 28/36/44-PIN FAMILY
REGISTER 6-1:
Bit
Range
31:24
23:16
15:8
7:0

RCON: RESET CONTROL REGISTER

Bit
31/23/15/7

Bit
30/22/14/6

Bit
29/21/13/5

Bit
Bit
28/20/12/4 27/19/11/3

Bit
26/18/10/2

Bit
25/17/9/1

Bit
24/16/8/0

U-0

U-0

U-0

U-0

—

—

—

—

U-0

U-0

U-0

U-0

—

—

—

—

U-0

U-0

U-0

—

—

—

U-0

U-0

U-0

U-0

U-0

—

—

—

—

U-0

U-0

U-0

—

U-0

U-0

U-0

R/W-0, HS

R/W-0

—

—

—

—

—

—

CMR

VREGS

R/W-0, HS

R/W-0, HS

U-0

R/W-0, HS

R/W-0, HS

R/W-0, HS

EXTR

SWR

—

WDTO

SLEEP

IDLE

R/W-1, HS
(1)

R/W-1, HS
(1)

BOR

Legend:

HS = Set by hardware

R = Readable bit

W = Writable bit

U = Unimplemented bit, read as ‘0’

-n = Value at POR

‘1’ = Bit is set

‘0’ = Bit is cleared

POR

x = Bit is unknown

bit 31-10 Unimplemented: Read as ‘0’
bit 9

CMR: Configuration Mismatch Reset Flag bit
1 = Configuration mismatch Reset has occurred
0 = Configuration mismatch Reset has not occurred

bit 8

VREGS: Voltage Regulator Standby Enable bit
1 = Regulator is enabled and is on during Sleep mode
0 = Regulator is set to standby tracking mode

bit 7

EXTR: External Reset (MCLR) Pin Flag bit
1 = Master Clear (pin) Reset has occurred
0 = Master Clear (pin) Reset has not occurred

bit 6

SWR: Software Reset Flag bit
1 = Software Reset was executed
0 = Software Reset as not executed

bit 5

Unimplemented: Read as ‘0’

bit 4

WDTO: Watchdog Timer Time-out Flag bit
1 = WDT Time-out has occurred
0 = WDT Time-out has not occurred

bit 3

SLEEP: Wake From Sleep Flag bit
1 = Device was in Sleep mode
0 = Device was not in Sleep mode

bit 2

IDLE: Wake From Idle Flag bit
1 = Device was in Idle mode
0 = Device was not in Idle mode

bit 1

BOR: Brown-out Reset Flag bit(1)
1 = Brown-out Reset has occurred
0 = Brown-out Reset has not occurred

bit 0

POR: Power-on Reset Flag bit(1)
1 = Power-on Reset has occurred
0 = Power-on Reset has not occurred

Note 1:

User software must clear this bit to view next detection.

 2011-2018 Microchip Technology Inc.

DS60001168K-page 63

PIC32MX1XX/2XX 28/36/44-PIN FAMILY
REGISTER 6-2:
Bit
Range
31:24
23:16
15:8
7:0

RSWRST: SOFTWARE RESET REGISTER

Bit
31/23/15/7

Bit
30/22/14/6

Bit
29/21/13/5

U-0

U-0

U-0

Bit
Bit
28/20/12/4 27/19/11/3
U-0

Bit
26/18/10/2

Bit
25/17/9/1

Bit
24/16/8/0

U-0

U-0

U-0

U-0

—

—

—

—

—

—

—

—

U-0

U-0

U-0

U-0

U-0

U-0

U-0

U-0

—

—

—

—

—

—

—

—

U-0

U-0

U-0

U-0

U-0

U-0

U-0

U-0

—

—

—

—

—

—

—

—

U-0

U-0

U-0

U-0

U-0

U-0

U-0

W-0, HC

—

—

—

—

—

—

—

SWRST(1)

Legend:

HC = Cleared by hardware

R = Readable bit

W = Writable bit

U = Unimplemented bit, read as ‘0’

-n = Value at POR

‘1’ = Bit is set

‘0’ = Bit is cleared

x = Bit is unknown

bit 31-1

Unimplemented: Read as ‘0’

bit 0

SWRST: Software Reset Trigger bit(1)
1 = Enable Software Reset event
0 = No effect

Note 1:

The system unlock sequence must be performed before the SWRST bit is written. Refer to Section 6.
“Oscillator” (DS60001112) in the “PIC32 Family Reference Manual” for details.

DS60001168K-page 64

 2011-2018 Microchip Technology Inc.

PIC32MX1XX/2XX 28/36/44-PIN FAMILY
7.0
Note:

INTERRUPT CONTROLLER
This data sheet summarizes the features
of the PIC32MX1XX/2XX 28/36/44-pin
Family of devices. It is not intended to be
a comprehensive reference source. To
complement the information in this data
sheet, refer to Section 8. “Interrupt Controller” (DS60001108), which is available
from the Documentation > Reference
Manual section of the Microchip PIC32
web site (www.microchip.com/pic32).

PIC32MX1XX/2XX 28/36/44-pin Family devices generate interrupt requests in response to interrupt events
from peripheral modules. The interrupt control module
exists externally to the CPU logic and prioritizes the
interrupt events before presenting them to the CPU.
The PIC32MX1XX/2XX 28/36/44-pin Family interrupt
module includes the following features:

•
•
•
•

Up to 64 interrupt sources
Up to 44 interrupt vectors
Single and multi-vector mode operations
Five external interrupts with edge polarity control
Interrupt proximity timer
Seven user-selectable priority levels for each
vector
Four user-selectable subpriority levels within each
priority
Software can generate any interrupt
User-configurable Interrupt Vector Table (IVT)
location
User-configurable interrupt vector spacing
Note:

The dedicated shadow register set is not
present on PIC32MX1XX/2XX 28/36/44pin Family devices.

A simplified block diagram of the Interrupt Controller
module is illustrated in Figure 7-1.

INTERRUPT CONTROLLER MODULE BLOCK DIAGRAM

Interrupt Requests

FIGURE 7-1:

•
•
•
•
•
•

Vector Number

Interrupt Controller

 2011-2018 Microchip Technology Inc.

CPU Core
Priority Level

DS60001168K-page 65

PIC32MX1XX/2XX 28/36/44-PIN FAMILY
TABLE 7-1:

INTERRUPT IRQ, VECTOR AND BIT LOCATION

Interrupt Source(1)

IRQ Vector
#
#

Interrupt Bit Location
Flag

Enable

Priority

Sub-priority

Persistent
Interrupt

IPC0<1:0>

No

Highest Natural Order Priority
CT – Core Timer Interrupt

0

0

IFS0<0>

IEC0<0>

IPC0<4:2>

CS0 – Core Software Interrupt 0

1

1

IFS0<1>

IEC0<1>

IPC0<12:10>

IPC0<9:8>

No

CS1 – Core Software Interrupt 1

2

2

IFS0<2>

IEC0<2>

IPC0<20:18>

IPC0<17:16>

No

INT0 – External Interrupt

3

3

IFS0<3>

IEC0<3>

IPC0<28:26>

IPC0<25:24>

No

T1 – Timer1

4

4

IFS0<4>

IEC0<4>

IPC1<4:2>

IPC1<1:0>

No

IC1E – Input Capture 1 Error

5

5

IFS0<5>

IEC0<5>

IPC1<12:10>

IPC1<9:8>

Yes

IC1 – Input Capture 1

6

5

IFS0<6>

IEC0<6>

IPC1<12:10>

IPC1<9:8>

Yes

OC1 – Output Compare 1

7

6

IFS0<7>

IEC0<7>

IPC1<20:18>

IPC1<17:16>

No

INT1 – External Interrupt 1

8

7

IFS0<8>

IEC0<8>

IPC1<28:26>

IPC1<25:24>

No

IEC0<9>

IPC2<4:2>

T2 – Timer2

9

8

IFS0<9>

IC2E – Input Capture 2

10

9

IFS0<10> IEC0<10> IPC2<12:10>

IPC2<1:0>

No

IPC2<9:8>

Yes

IC2 – Input Capture 2

11

9

IFS0<11> IEC0<11> IPC2<12:10>

IPC2<9:8>

Yes

OC2 – Output Compare 2

12

10

IFS0<12> IEC0<12> IPC2<20:18>

IPC2<17:16>

No

INT2 – External Interrupt 2

13

11

IFS0<13> IEC0<13> IPC2<28:26>

IPC2<25:24>

No

T3 – Timer3

14

12

IFS0<14> IEC0<14>

IPC3<1:0>

No

IPC3<4:2>

IC3E – Input Capture 3

15

13

IFS0<15> IEC0<15> IPC3<12:10>

IPC3<9:8>

Yes

IC3 – Input Capture 3

16

13

IFS0<16> IEC0<16> IPC3<12:10>

IPC3<9:8>

Yes

OC3 – Output Compare 3

17

14

IFS0<17> IEC0<17> IPC3<20:18>

IPC3<17:16>

No

INT3 – External Interrupt 3

18

15

IFS0<18> IEC0<18> IPC3<28:26>

IPC3<25:24>

No

T4 – Timer4

19

16

IFS0<19> IEC0<19>

IC4E – Input Capture 4 Error

20

17

IFS0<20> IEC0<20> IPC4<12:10>

IPC4<4:2>

IPC4<1:0>

No

IPC4<9:8>

Yes

IC4 – Input Capture 4

21

17

IFS0<21> IEC0<21> IPC4<12:10>

IPC4<9:8>

Yes

OC4 – Output Compare 4

22

18

IFS0<22> IEC0<22> IPC4<20:18>

IPC4<17:16>

No

INT4 – External Interrupt 4

23

19

IFS0<23> IEC0<23> IPC4<28:26>

IPC4<25:24>

No

T5 – Timer5

24

20

IFS0<24> IEC0<24>

IPC5<1:0>

No

IPC5<4:2>

IC5E – Input Capture 5 Error

25

21

IFS0<25> IEC0<25> IPC5<12:10>

IPC5<9:8>

Yes

IC5 – Input Capture 5

26

21

IFS0<26> IEC0<26> IPC5<12:10>

IPC5<9:8>

Yes

OC5 – Output Compare 5

27

22

IFS0<27> IEC0<27> IPC5<20:18>

IPC5<17:16>

No

AD1 – ADC1 Convert done

28

23

IFS0<28> IEC0<28> IPC5<28:26>

IPC5<25:24>

Yes

FSCM – Fail-Safe Clock Monitor

29

24

IFS0<29> IEC0<29>

IPC6<1:0>

No

RTCC – Real-Time Clock and
Calendar

30

25

IFS0<30> IEC0<30> IPC6<12:10>

IPC6<9:8>

No

FCE – Flash Control Event

31

26

IFS0<31> IEC0<31> IPC6<20:18>

IPC6<17:16>

No

CMP1 – Comparator Interrupt

32

27

IFS1<0>

IEC1<0>

IPC6<28:26>

IPC6<25:24>

No

CMP2 – Comparator Interrupt

33

28

IFS1<1>

IEC1<1>

IPC7<4:2>

IPC7<1:0>

No

CMP3 – Comparator Interrupt

34

29

IFS1<2>

IEC1<2>

IPC7<12:10>

IPC7<9:8>

No

USB – USB Interrupts

35

30

IFS1<3>

IEC1<3>

IPC7<20:18>

IPC7<17:16>

Yes

IPC6<4:2>

SPI1E – SPI1 Fault

36

31

IFS1<4>

IEC1<4>

IPC7<28:26>

IPC7<25:24>

Yes

SPI1RX – SPI1 Receive Done

37

31

IFS1<5>

IEC1<5>

IPC7<28:26>

IPC7<25:24>

Yes

SPI1TX – SPI1 Transfer Done

38

31

IFS1<6>

IEC1<6>

IPC7<28:26>

IPC7<25:24>

Yes

Note 1:

Not all interrupt sources are available on all devices. See TABLE 1: “PIC32MX1XX 28/36/44-Pin General
Purpose Family Features” and TABLE 2: “PIC32MX2XX 28/36/44-pin USB Family Features” for the
lists of available peripherals.

DS60001168K-page 66

 2011-2018 Microchip Technology Inc.

PIC32MX1XX/2XX 28/36/44-PIN FAMILY
TABLE 7-1:

INTERRUPT IRQ, VECTOR AND BIT LOCATION (CONTINUED)

Interrupt Source(1)

IRQ Vector
#
#

Interrupt Bit Location
Flag

Enable

Priority

Sub-priority

Persistent
Interrupt

U1E – UART1 Fault

39

32

IFS1<7>

IEC1<7>

IPC8<4:2>

IPC8<1:0>

Yes

U1RX – UART1 Receive Done

40

32

IFS1<8>

IEC1<8>

IPC8<4:2>

IPC8<1:0>

Yes

U1TX – UART1 Transfer Done

41

32

IFS1<9>

IEC1<9>

IPC8<4:2>

IPC8<1:0>

Yes

I2C1B – I2C1 Bus Collision Event

42

33

IFS1<10> IEC1<10> IPC8<12:10>

IPC8<9:8>

Yes

I2C1S – I2C1 Slave Event

43

33

IFS1<11> IEC1<11> IPC8<12:10>

IPC8<9:8>

Yes

I2C1M – I2C1 Master Event

44

33

IFS1<12> IEC1<12> IPC8<12:10>

IPC8<9:8>

Yes

CNA – PORTA Input Change
Interrupt

45

34

IFS1<13> IEC1<13> IPC8<20:18>

IPC8<17:16>

Yes

CNB – PORTB Input Change
Interrupt

46

34

IFS1<14> IEC1<14> IPC8<20:18>

IPC8<17:16>

Yes

CNC – PORTC Input Change
Interrupt

47

34

IFS1<15> IEC1<15> IPC8<20:18>

IPC8<17:16>

Yes

PMP – Parallel Master Port

48

35

IFS1<16> IEC1<16> IPC8<28:26>

IPC8<25:24>

Yes

PMPE – Parallel Master Port Error

49

35

IFS1<17> IEC1<17> IPC8<28:26>

IPC8<25:24>

Yes

SPI2E – SPI2 Fault

50

36

IFS1<18> IEC1<18>

IPC9<4:2>

IPC9<1:0>

Yes

SPI2RX – SPI2 Receive Done

51

36

IFS1<19> IEC1<19>

IPC9<4:2>

IPC9<1:0>

Yes

SPI2TX – SPI2 Transfer Done

52

36

IFS1<20> IEC1<20>

IPC9<4:2>

IPC9<1:0>

Yes

U2E – UART2 Error

53

37

IFS1<21> IEC1<21> IPC9<12:10>

IPC9<9:8>

Yes

U2RX – UART2 Receiver

54

37

IFS1<22> IEC1<22> IPC9<12:10>

IPC9<9:8>

Yes

U2TX – UART2 Transmitter

55

37

IFS1<23> IEC1<23> IPC9<12:10>

IPC9<9:8>

Yes

I2C2B – I2C2 Bus Collision Event

56

38

IFS1<24> IEC1<24> IPC9<20:18>

IPC9<17:16>

Yes

I2C2S – I2C2 Slave Event

57

38

IFS1<25> IEC1<25> IPC9<20:18>

IPC9<17:16>

Yes

I2C2M – I2C2 Master Event

58

38

IFS1<26> IEC1<26> IPC9<20:18>

IPC9<17:16>

Yes

CTMU – CTMU Event

59

39

IFS1<27> IEC1<27> IPC9<28:26>

IPC9<25:24>

Yes

DMA0 – DMA Channel 0

60

40

IFS1<28> IEC1<28>

IPC10<1:0>

No

IPC10<4:2>

DMA1 – DMA Channel 1

61

41

IFS1<29> IEC1<29> IPC10<12:10>

DMA2 – DMA Channel 2

62

42

IFS1<30> IEC1<30> IPC10<20:18> IPC10<17:16>

IPC10<9:8>

No

No

DMA3 – DMA Channel 3

63

43

IFS1<31> IEC1<31> IPC10<28:26> IPC10<25:24>

No

Lowest Natural Order Priority
Note 1:

Not all interrupt sources are available on all devices. See TABLE 1: “PIC32MX1XX 28/36/44-Pin General
Purpose Family Features” and TABLE 2: “PIC32MX2XX 28/36/44-pin USB Family Features” for the
lists of available peripherals.

 2011-2018 Microchip Technology Inc.

DS60001168K-page 67

Interrupt Control Registers

Virtual Address
(BF88_#)

Register
Name(1)

TABLE 7-2:

1000

INTCON

INTERRUPT REGISTER MAP

1010 INTSTAT(3)
1020

IPTMR

1030

IFS0

1040

IFS1

1060

IEC0

1070

IEC1

1090

IPC0

10A0

IPC1

10B0

IPC2

 2011-2018 Microchip Technology Inc.

10C0

IPC3

10D0

IPC4

10E0

IPC5

10F0

IPC6

31/15

30/14

29/13

28/12

27/11

26/10

31:16

—

—

15:0

—

—

—

—

—

—

—

MVEC

—

31:16

—

—

—

—

—

15:0

—

—

—

—

—

25/9

24/8

23/7

22/6

21/5

—

—

—

—

—

—

—

—

—

—

INT4EP

INT3EP

—

—

—

—

—

—

—

TPC<2:0>
—

—

—

SRIPL<2:0>

31:16

20/4

19/3

18/2

17/1

16/0

All
Resets

Bit Range

Bits

—

—

—

0000

INT2EP INT1EP INT0EP
—

—

—

VEC<5:0>

0000
0000

IPTMR<31:0>

15:0

0000
0000

0000

31:16

FCEIF

RTCCIF

FSCMIF

AD1IF

OC5IF

IC5IF

IC5EIF

T5IF

INT4IF

OC4IF

IC4IF

IC4EIF

T4IF

INT3IF

OC3IF

IC3IF

0000

15:0

IC3EIF

T3IF

INT2IF

OC2IF

IC2IF

IC2EIF

T2IF

INT1IF

OC1IF

IC1IF

IC1EIF

T1IF

INT0IF

CS1IF

CS0IF

CTIF

0000

DMA2IF

DMA1IF

DMA0IF

CTMUIF

I2C2MIF

I2C2SIF

I2C2BIF

U2TXIF

U2RXIF

U2EIF

CNCIF

CNBIF

CNAIF

I2C1MIF

I2C1SIF

I2C1BIF

U1TXIF

U1RXIF

U1EIF

SPI1TXIF

SPI1RXIF

SPI1EIF

31:16

FCEIE

RTCCIE

FSCMIE

AD1IE

OC5IE

IC5IE

IC5EIE

T5IE

INT4IE

OC4IE

IC4IE

IC4EIE

T4IE

INT3IE

OC3IE

IC3IE

0000

15:0

IC3EIE

T3IE

INT2IE

OC2IE

IC2IE

IC2EIE

T2IE

INT1IE

OC1IE

IC1IE

IC1EIE

T1IE

INT0IE

CS1IE

CS0IE

CTIE

0000

DMA2IE

DMA1IE

DMA0IE

CTMUIE

I2C2MIE

I2C2SIE

I2C2BIE

U2TXIE

U2RXIE

U2EIE

I2C1MIE

I2C1SIE

I2C1BIE

U1TXIE

U1RXIE

U1EIE

SPI1TXIE

SPI1RXIE

31:16 DMA3IF
15:0

31:16 DMA3IE

SPI2TXIF SPI2RXIF SPI2EIF PMPEIF PMPIF
USBIF(2) CMP3IF CMP2IF CMP1IF

0000
0000

SPI2TXIE SPI2RXIE SPI2EIE PMPEIE PMPIE

0000

USBIE(2) CMP3IE CMP2IE CMP1IE

0000

15:0

CNCIE

CNBIE

CNAIE

SPI1EIE

31:16

—

—

—

INT0IP<2:0>

INT0IS<1:0>

—

—

—

CS1IP<2:0>

CS1IS<1:0>

0000

15:0

—

—

—

CS0IP<2:0>

CS0IS<1:0>

—

—

—

CTIP<2:0>

CTIS<1:0>

0000

31:16

—

—

—

INT1IP<2:0>

INT1IS<1:0>

—

—

—

OC1IP<2:0>

OC1IS<1:0>

0000

15:0

—

—

—

IC1IP<2:0>

IC1IS<1:0>

—

—

—

T1IP<2:0>

T1IS<1:0>

0000

31:16

—

—

—

INT2IP<2:0>

INT2IS<1:0>

—

—

—

OC2IP<2:0>

OC2IS<1:0>

0000

15:0

—

—

—

IC2IP<2:0>

IC2IS<1:0>

—

—

—

T2IP<2:0>

T2IS<1:0>

0000

31:16

—

—

—

INT3IP<2:0>

INT3IS<1:0>

—

—

—

OC3IP<2:0>

OC3IS<1:0>

0000

15:0

—

—

—

IC3IP<2:0>

IC3IS<1:0>

—

—

—

T3IP<2:0>

T3IS<1:0>

0000

31:16

—

—

—

INT4IP<2:0>

INT4IS<1:0>

—

—

—

OC4IP<2:0>

OC4IS<1:0>

0000

15:0

—

—

—

IC4IP<2:0>

IC4IS<1:0>

—

—

—

T4IP<2:0>

T4IS<1:0>

0000

31:16

—

—

—

AD1IP<2:0>

AD1IS<1:0>

—

—

—

OC5IP<2:0>

OC5IS<1:0>

0000

15:0

—

—

—

IC5IP<2:0>

IC5IS<1:0>

—

—

—

T5IP<2:0>

T5IS<1:0>

0000

31:16

—

—

—

CMP1IP<2:0>

CMP1IS<1:0>

—

—

—

FCEIP<2:0>

FCEIS<1:0>

0000

15:0

—

—

—

RTCCIP<2:0>

RTCCIS<1:0>

—

—

—

FSCMIP<2:0>

FSCMIS<1:0>

0000

Legend:

x = unknown value on Reset; — = unimplemented, read as ‘0’. Reset values are shown in hexadecimal.

Note 1:

With the exception of those noted, all registers in this table have corresponding CLR, SET and INV registers at their virtual addresses, plus offsets of 0x4 0x8 and 0xC, respectively. See Section 11.2 “CLR,
SET and INV Registers” for more information.
These bits are not available on PIC32MX1XX devices.
This register does not have associated CLR, SET, INV registers.

2:
3:

PIC32MX1XX/2XX 28/36/44-PIN FAMILY

DS60001168K-page 68

7.1

Virtual Address
(BF88_#)

Register
Name(1)

1100

IPC7

1110

IPC8

INTERRUPT REGISTER MAP (CONTINUED)

1120

IPC9

1130

IPC10

31/15

30/14

29/13

28/12

27/11

31:16

—

—

—

SPI1IP<2:0>

15:0

—

—

—

CMP3IP<2:0>

31:16

—

—

—

PMPIP<2:0>

15:0

—

—

—

I2C1IP<2:0>

31:16

—

—

—

15:0

—

—

31:16

—

15:0

—

26/10

25/9

24/8

20/4

19/3

18/2

17/1

16/0

All
Resets

Bit Range

Bits

23/7

22/6

21/5

SPI1IS<1:0>

—

—

—

USBIP<2:0>(2)

USBIS<1:0>(2)

0000

CMP3IS<1:0>

—

—

—

CMP2IP<2:0>

CMP2IS<1:0>

0000

PMPIS<1:0>

—

—

—

CNIP<2:0>

CNIS<1:0>

0000

I2C1IS<1:0>

—

—

—

U1IP<2:0>

U1IS<1:0>

0000

CTMUIP<2:0>

CTMUIS<1:0>

—

—

—

I2C2IP<2:0>

I2C2IS<1:0>

0000

—

U2IP<2:0>

U2IS<1:0>

—

—

—

SPI2IP<2:0>

SPI2IS<1:0>

0000

—

—

DMA3IP<2:0>

DMA3IS<1:0>

—

—

—

DMA2IP<2:0>

DMA2IS<1:0>

0000

—

—

DMA1IP<2:0>

DMA1IS<1:0>

—

—

—

DMA0IP<2:0>

DMA0IS<1:0>

0000

Legend:

x = unknown value on Reset; — = unimplemented, read as ‘0’. Reset values are shown in hexadecimal.

Note 1:

With the exception of those noted, all registers in this table have corresponding CLR, SET and INV registers at their virtual addresses, plus offsets of 0x4 0x8 and 0xC, respectively. See Section 11.2 “CLR,
SET and INV Registers” for more information.
These bits are not available on PIC32MX1XX devices.
This register does not have associated CLR, SET, INV registers.

2:
3:

DS60001168K-page 69

PIC32MX1XX/2XX 28/36/44-PIN FAMILY

 2011-2018 Microchip Technology Inc.

TABLE 7-2:

PIC32MX1XX/2XX 28/36/44-PIN FAMILY
REGISTER 7-1:
Bit
Range
31:24
23:16
15:8
7:0

INTCON: INTERRUPT CONTROL REGISTER

Bit
31/23/15/7

Bit
30/22/14/6

Bit
29/21/13/5

U-0

U-0

U-0

Bit
Bit
28/20/12/4 27/19/11/3
U-0

Bit
26/18/10/2

Bit
25/17/9/1

Bit
24/16/8/0

U-0

U-0

U-0

U-0

—

—

—

—

—

—

—

—

U-0

U-0

U-0

U-0

U-0

U-0

U-0

U-0

—

—

—

—

—

—

—

—

U-0

U-0

U-0

R/W-0

U-0

R/W-0

R/W-0

R/W-0

—

—

—

MVEC

—

U-0

U-0

U-0

R/W-0

R/W-0

R/W-0

TPC<2:0>
R/W-0

R/W-0

—

—

—

INT4EP

INT3EP

INT2EP

INT1EP

INT0EP

Legend:
R = Readable bit

W = Writable bit

U = Unimplemented bit, read as ‘0’

-n = Value at POR

‘1’ = Bit is set

‘0’ = Bit is cleared

x = Bit is unknown

bit 31-16 Unimplemented: Read as ‘0’
bit 15-13 Unimplemented: Read as ‘0’
bit 12

bit 11
bit 10-8

bit 7-5
bit 4

bit 3

bit 2

bit 1

bit 0

MVEC: Multi Vector Configuration bit
1 = Interrupt controller configured for Multi-vectored mode
0 = Interrupt controller configured for Single-vectored mode
Unimplemented: Read as ‘0’
TPC<2:0>: Interrupt Proximity Timer Control bits
111 = Interrupts of group priority 7 or lower start the Interrupt Proximity timer
110 = Interrupts of group priority 6 or lower start the Interrupt Proximity timer
101 = Interrupts of group priority 5 or lower start the Interrupt Proximity timer
100 = Interrupts of group priority 4 or lower start the Interrupt Proximity timer
011 = Interrupts of group priority 3 or lower start the Interrupt Proximity timer
010 = Interrupts of group priority 2 or lower start the Interrupt Proximity timer
001 = Interrupts of group priority 1 start the Interrupt Proximity timer
000 = Disables Interrupt Proximity timer
Unimplemented: Read as ‘0’
INT4EP: External Interrupt 4 Edge Polarity Control bit
1 = Rising edge
0 = Falling edge
INT3EP: External Interrupt 3 Edge Polarity Control bit
1 = Rising edge
0 = Falling edge
INT2EP: External Interrupt 2 Edge Polarity Control bit
1 = Rising edge
0 = Falling edge
INT1EP: External Interrupt 1 Edge Polarity Control bit
1 = Rising edge
0 = Falling edge
INT0EP: External Interrupt 0 Edge Polarity Control bit
1 = Rising edge
0 = Falling edge

DS60001168K-page 70

 2011-2018 Microchip Technology Inc.

PIC32MX1XX/2XX 28/36/44-PIN FAMILY
REGISTER 7-2:
Bit
Range
31:24
23:16
15:8
7:0

INTSTAT: INTERRUPT STATUS REGISTER

Bit
31/23/15/7

Bit
30/22/14/6

Bit
29/21/13/5

Bit
Bit
28/20/12/4 27/19/11/3

Bit
26/18/10/2

Bit
25/17/9/1

Bit
24/16/8/0

U-0

U-0

U-0

U-0

—

—

—

—

U-0

U-0

U-0

U-0

—

—

—

—

U-0

U-0

U-0

—

—

—

U-0

U-0

U-0

U-0

U-0

—

—

—

—

U-0

U-0

—

U-0

U-0

U-0

R/W-0

R/W-0

R/W-0

—

—

—

—

—

U-0

U-0

R/W-0

R/W-0

R/W-0

—

—

SRIPL<2:0>(1)
R/W-0

R/W-0

R/W-0

VEC<5:0>(1)

Legend:
R = Readable bit

W = Writable bit

U = Unimplemented bit, read as ‘0’

-n = Value at POR

‘1’ = Bit is set

‘0’ = Bit is cleared

x = Bit is unknown

bit 31-11 Unimplemented: Read as ‘0’
bit 10-8 SRIPL<2:0>: Requested Priority Level bits(1)
111-000 = The priority level of the latest interrupt presented to the CPU
bit 7-6
bit 5-0

Unimplemented: Read as ‘0’
VEC<5:0>: Interrupt Vector bits(1)
11111-00000 = The interrupt vector that is presented to the CPU

Note 1:

This value should only be used when the interrupt controller is configured for Single Vector mode.

REGISTER 7-3:
Bit
Range
31:24
23:16
15:8
7:0

IPTMR: INTERRUPT PROXIMITY TIMER REGISTER

Bit
31/23/15/7

Bit
30/22/14/6

Bit
29/21/13/5

R/W-0

R/W-0

R/W-0

Bit
Bit
28/20/12/4 27/19/11/3
R/W-0

R/W-0

Bit
26/18/10/2

Bit
25/17/9/1

Bit
24/16/8/0

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

IPTMR<31:24>
R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

IPTMR<23:16>
R/W-0

IPTMR<15:8>
R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

IPTMR<7:0>

Legend:
R = Readable bit
-n = Value at POR
bit 31-0

W = Writable bit
‘1’ = Bit is set

U = Unimplemented bit, read as ‘0’
‘0’ = Bit is cleared
x = Bit is unknown

IPTMR<31:0>: Interrupt Proximity Timer Reload bits
Used by the Interrupt Proximity Timer as a reload value when the Interrupt Proximity timer is triggered by
an interrupt event.

 2011-2018 Microchip Technology Inc.

DS60001168K-page 71

PIC32MX1XX/2XX 28/36/44-PIN FAMILY
REGISTER 7-4:
Bit
Range
31:24
23:16
15:8
7:0

IFSx: INTERRUPT FLAG STATUS REGISTER

Bit
31/23/15/7

Bit
30/22/14/6

Bit
29/21/13/5

Bit
Bit
28/20/12/4 27/19/11/3

Bit
26/18/10/2

Bit
25/17/9/1

Bit
24/16/8/0

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

IFS31

IFS30

IFS29

R/W-0

R/W-0

R/W-0

IFS28

IFS27

IFS26

IFS25

IFS24

R/W-0

R/W-0

R/W-0

R/W-0

IFS23

IFS22

IFS21

R/W-0

IFS20

IFS19

IFS18

IFS17

IFS16

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

IFS15

IFS14

IFS13

IFS12

IFS11

IFS10

IFS09

IFS08

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

IFS07

IFS06

IFS05

IFS04

IFS03

IFS02

IFS01

IFS00

Legend:
R = Readable bit
-n = Value at POR
bit 31-0

Note:

31:24
23:16
15:8
7:0

U = Unimplemented bit, read as ‘0’
‘0’ = Bit is cleared
x = Bit is unknown

IFS31-IFS00: Interrupt Flag Status bits
1 = Interrupt request has occurred
0 = No interrupt request has occurred
This register represents a generic definition of the IFSx register. Refer to Table 7-1 for the exact bit
definitions.

REGISTER 7-5:
Bit
Range

W = Writable bit
‘1’ = Bit is set

Bit
31/23/15/7

IECx: INTERRUPT ENABLE CONTROL REGISTER
Bit
30/22/14/6

Bit
29/21/13/5

Bit
Bit
28/20/12/4 27/19/11/3

Bit
26/18/10/2

Bit
25/17/9/1

Bit
24/16/8/0

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

IEC31

IEC30

IEC29

IEC28

IEC27

IEC26

IEC25

IEC24

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

IEC23

IEC22

IEC21

IEC20

IEC19

IEC18

IEC17

IEC16

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

IEC15

IEC14

IEC13

IEC12

IEC11

IEC10

IEC09

IEC08

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

IEC07

IEC06

IEC05

IEC04

IEC03

IEC02

IEC01

IEC00

Legend:
R = Readable bit
-n = Value at POR
bit 31-0

Note:

W = Writable bit
‘1’ = Bit is set

U = Unimplemented bit, read as ‘0’
‘0’ = Bit is cleared
x = Bit is unknown

IEC31-IEC00: Interrupt Enable bits
1 = Interrupt is enabled
0 = Interrupt is disabled
This register represents a generic definition of the IECx register. Refer to Table 7-1 for the exact bit
definitions.

DS60001168K-page 72

 2011-2018 Microchip Technology Inc.

PIC32MX1XX/2XX 28/36/44-PIN FAMILY
REGISTER 7-6:
Bit
Range

IPCx: INTERRUPT PRIORITY CONTROL REGISTER

Bit
31/23/15/7

Bit
30/22/14/6

Bit
29/21/13/5

U-0

U-0

U-0

—

—

—

U-0

U-0

U-0

—

—

—

U-0

U-0

U-0

—

—

—

U-0

U-0

U-0

—

—

—

31:24
23:16
15:8
7:0

Legend:
R = Readable bit
-n = Value at POR

Bit
Bit
28/20/12/4 27/19/11/3

W = Writable bit
‘1’ = Bit is set

R/W-0

R/W-0

Bit
26/18/10/2

Bit
25/17/9/1

Bit
24/16/8/0

R/W-0

R/W-0

R/W-0

IP03<2:0>
R/W-0

R/W-0

IS03<1:0>
R/W-0

IP02<2:0>
R/W-0

R/W-0

R/W-0

IP00<2:0>

R/W-0

IS02<1:0>
R/W-0

IP01<2:0>
R/W-0

R/W-0

R/W-0

R/W-0

IS01<1:0>
R/W-0

R/W-0

R/W-0

IS00<1:0>

U = Unimplemented bit, read as ‘0’
‘0’ = Bit is cleared
x = Bit is unknown

bit 31-29 Unimplemented: Read as ‘0’
bit 28-26 IP03<2:0>: Interrupt Priority bits
111 = Interrupt priority is 7
•
•
•

010 = Interrupt priority is 2
001 = Interrupt priority is 1
000 = Interrupt is disabled
bit 25-24 IS03<1:0>: Interrupt Subpriority bits
11 = Interrupt subpriority is 3
10 = Interrupt subpriority is 2
01 = Interrupt subpriority is 1
00 = Interrupt subpriority is 0
bit 23-21 Unimplemented: Read as ‘0’
bit 20-18 IP02<2:0>: Interrupt Priority bits
111 = Interrupt priority is 7
•
•
•

010 = Interrupt priority is 2
001 = Interrupt priority is 1
000 = Interrupt is disabled
bit 17-16 IS02<1:0>: Interrupt Subpriority bits
11 = Interrupt subpriority is 3
10 = Interrupt subpriority is 2
01 = Interrupt subpriority is 1
00 = Interrupt subpriority is 0
bit 15-13 Unimplemented: Read as ‘0’
bit 12-10 IP01<2:0>: Interrupt Priority bits
111 = Interrupt priority is 7
•
•
•

010 = Interrupt priority is 2
001 = Interrupt priority is 1
000 = Interrupt is disabled
Note:

This register represents a generic definition of the IPCx register. Refer to Table 7-1 for the exact bit
definitions.

 2011-2018 Microchip Technology Inc.

DS60001168K-page 73

PIC32MX1XX/2XX 28/36/44-PIN FAMILY
REGISTER 7-6:
bit 9-8

bit 7-5
bit 4-2

IPCx: INTERRUPT PRIORITY CONTROL REGISTER (CONTINUED)

IS01<1:0>: Interrupt Subpriority bits
11 = Interrupt subpriority is 3
10 = Interrupt subpriority is 2
01 = Interrupt subpriority is 1
00 = Interrupt subpriority is 0
Unimplemented: Read as ‘0’
IP00<2:0>: Interrupt Priority bits
111 = Interrupt priority is 7
•
•
•

bit 1-0

Note:

010 = Interrupt priority is 2
001 = Interrupt priority is 1
000 = Interrupt is disabled
IS00<1:0>: Interrupt Subpriority bits
11 = Interrupt subpriority is 3
10 = Interrupt subpriority is 2
01 = Interrupt subpriority is 1
00 = Interrupt subpriority is 0
This register represents a generic definition of the IPCx register. Refer to Table 7-1 for the exact bit
definitions.

DS60001168K-page 74

 2011-2018 Microchip Technology Inc.

PIC32MX1XX/2XX 28/36/44-PIN FAMILY
8.0
Note:

OSCILLATOR
CONFIGURATION
This data sheet summarizes the features
of the PIC32MX1XX/2XX 28/36/44-pin
Family of devices. It is not intended to be
a comprehensive reference source. To
complement the information in this data
sheet, refer to Section 6. “Oscillator
Configuration” (DS60001112), which is
available from the Documentation >
Reference Manual section of the
Microchip
PIC32
web
site
(www.microchip.com/pic32).

The PIC32MX1XX/2XX 28/36/44-pin Family oscillator
system has the following modules and features:
• Four external and internal oscillator options as
clock sources
• On-Chip PLL with user-selectable input divider,
multiplier and output divider to boost operating
frequency on select internal and external
oscillator sources
• On-Chip user-selectable divisor postscaler on
select oscillator sources
• Software-controllable switching between
various clock sources
• A Fail-Safe Clock Monitor (FSCM) that detects
clock failure and permits safe application recovery
or shutdown
• Dedicated On-Chip PLL for USB peripheral
A block diagram of the oscillator system is provided in
Figure 8-1.

 2011-2018 Microchip Technology Inc.

DS60001168K-page 75

PIC32MX1XX/2XX 28/36/44-PIN FAMILY
FIGURE 8-1:

OSCILLATOR DIAGRAM
USB PLL(4)

USB Clock (48 MHz)
div x

UFIN

div 2

PLL x24

UFRCEN
UPLLEN

UFIN 4 MHz
UPLLIDIV<2:0>

ROTRIM<8:0>
(M)

REFCLKI
POSC
FRC
LPRC
SOSC
PBCLK
SYSCLK

System PLL
4 MHz FIN 5 MHz
FIN
div x
PLL

REFCLKO

M 
 2   N + --------512

To SPI

RODIV<14:0>
(N)
ROSEL<3:0>

FPLLIDIV<2:0>
COSC<2:0>

OE

PLLMULT<2:0>
div y

XTPLL, HSPLL,
ECPLL, FRCPLL

PLLODIV<2:0>
Primary Oscillator (POSC)
C1(2)

OSC1
XTAL
RP(1)

C2(2)

POSC (XT, HS, EC)

To Internal
Logic
HS

3x

1x

XT

FRC

RS(1) OSC2(3)

div 16

div 2

PBDIV<1:0>

FRC/16

To ADC

Secondary Oscillator (SOSC)
SOSCO

Postscaler Peripherals
div x
PBCLK (TPB)

CPU and Select Peripherals

FRC
Oscillator
8 MHz typical

Postscaler

TUN<5:0>

FRCDIV<2:0>

SYSCLK

FRCDIV

32.768 kHz
SOSC

SOSCEN and FSOSCEN
LPRC
Oscillator

SOSCI

31.25 kHz typical

LPRC
Clock Control Logic
Fail-Safe
Clock
Monitor

FSCM INT
FSCM Event

NOSC<2:0>
COSC<2:0>
OSWEN
FSCMEN<1:0>

WDT, PWRT

Timer1, RTCC
Notes:

1.
2.
3.
4.

A series resistor, RS, may be required for AT strip cut crystals or eliminate clipping. Alternately, to increase oscillator circuit gain,
add a parallel resistor, RP, with a value of 1 M
Refer to Section 6. “Oscillator Configuration” (DS60001112) in the “PIC32 Family Reference Manual” for help in determining the
best oscillator components.
The PBCLK out is only available on the OSC2 pin in certain clock modes.
The USB PLL is only available on PIC32MX2XX devices.

DS60001168K-page 76

 2011-2018 Microchip Technology Inc.

Oscillator Control Regiters

Virtual Address
(BF80_#)

TABLE 8-1:

OSCILLATOR CONTROL REGISTER MAP

F000 OSCCON
F010 OSCTUN
F020 REFOCON
F030 REFOTRIM
Legend:
Note 1:
2:
3:

31/15

30/14

31:16

—

—

15:0

—
—

29/13

28/12

27/11

26/10

PLLODIV<2:0>
—

—

NOSC<2:0>
—

—

—

—

—

—

—

31:16

—
—

15:0

ON

—

SIDL

OE

RSLP

—

15:0

—

31:16
15:0

24/8

FRCDIV<2:0>
—
—

31:16

COSC<2:0>
—

25/9

23/7

—
—
—

DIVSWEN ACTIVE

—

—

—

—

—

—

—

21/5

SOSCRDY PBDIVRDY

CLKLOCK ULOCK(3)
—
—

SLOCK
—

20/4

19/3

—
—

18/2

PBDIV<1:0>
SLPEN
—

17/1

16/0

x1xx(2)

PLLMULT<2:0>

CF
—

—
—
RODIV<14:0>

ROTRIM<8:0>
—

22/6

UFRCEN(3) SOSCEN
—
—

All Resets

Bit Range

Register
Name(1)

Bits

OSWEN
—

TUN<5:0>

xxxx(2)
0000
0000
0000

—

—

—

—

—

—

—

—

—

—

0000

—

—

—

—

—

—

—

0000

ROSEL<3:0>

0000

x = unknown value on Reset; — = unimplemented, read as ‘0’. Reset values are shown in hexadecimal.
All registers in this table have corresponding CLR, SET and INV registers at their virtual addresses, plus offsets of 0x4, 0x8 and 0xC, respectively. See Section 11.2 “CLR, SET and INV Registers” for
more information.
Reset values are dependent on the DEVCFGx Configuration bits and the type of reset.
This bit is only available on PIC32MX2XX devices.

DS60001168K-page 77

PIC32MX1XX/2XX 28/36/44-PIN FAMILY

 2011-2018 Microchip Technology Inc.

8.1

PIC32MX1XX/2XX 28/36/44-PIN FAMILY
REGISTER 8-1:
Bit
Range
31:24
23:16
15:8
7:0

OSCCON: OSCILLATOR CONTROL REGISTER

Bit
31/23/15/7

Bit
30/22/14/6

Bit
29/21/13/5

U-0

U-0

R/W-y

—

—

U-0

R-0

—
U-0

R/W-y

R-0

Bit
26/18/10/2

Bit
25/17/9/1

Bit
24/16/8/0

R/W-y

R/W-0

R/W-0

R/W-1

R/W-y

R/W-y

PLLODIV<2:0>
R-1

SOSCRDY PBDIVRDY

—

Bit
Bit
28/20/12/4 27/19/11/3

R-0

R/W-y

FRCDIV<2:0>

PBDIV<1:0>
R-0

U-0

COSC<2:0>

R/W-y

R/W-y

PLLMULT<2:0>
R/W-y

—

R/W-y

R/W-y

NOSC<2:0>

R/W-0

R-0

R-0

R/W-0

R/W-0

R/W-0

R/W-y

R/W-0

CLKLOCK

ULOCK(1)

SLOCK

SLPEN

CF

UFRCEN(1)

SOSCEN

OSWEN

Legend:
R = Readable bit

y = Value set from Configuration bits on POR
W = Writable bit
U = Unimplemented bit, read as ‘0’

-n = Value at POR

‘1’ = Bit is set

‘0’ = Bit is cleared

x = Bit is unknown

bit 31-30 Unimplemented: Read as ‘0’
bit 29-27 PLLODIV<2:0>: Output Divider for PLL
111 = PLL output divided by 256
110 = PLL output divided by 64
101 = PLL output divided by 32
100 = PLL output divided by 16
011 = PLL output divided by 8
010 = PLL output divided by 4
001 = PLL output divided by 2
000 = PLL output divided by 1
bit 26-24 FRCDIV<2:0>: Internal Fast RC (FRC) Oscillator Clock Divider bits
111 = FRC divided by 256
110 = FRC divided by 64
101 = FRC divided by 32
100 = FRC divided by 16
011 = FRC divided by 8
010 = FRC divided by 4
001 = FRC divided by 2 (default setting)
000 = FRC divided by 1
bit 23
Unimplemented: Read as ‘0’
bit 22

bit 21

SOSCRDY: Secondary Oscillator (SOSC) Ready Indicator bit
1 = The Secondary Oscillator is running and is stable
0 = The Secondary Oscillator is still warming up or is turned off
PBDIVRDY: Peripheral Bus Clock (PBCLK) Divisor Ready bit
1 = PBDIV<1:0> bits can be written
0 = PBDIV<1:0> bits cannot be written

bit 20-19 PBDIV<1:0>: Peripheral Bus Clock (PBCLK) Divisor bits
11 = PBCLK is SYSCLK divided by 8 (default)
10 = PBCLK is SYSCLK divided by 4
01 = PBCLK is SYSCLK divided by 2
00 = PBCLK is SYSCLK divided by 1
Note 1:
Note:

This bit is only available on PIC32MX2XX devices.
Writes to this register require an unlock sequence. Refer to Section 6. “Oscillator” (DS60001112) in the
“PIC32 Family Reference Manual” for details.

DS60001168K-page 78

 2011-2018 Microchip Technology Inc.

PIC32MX1XX/2XX 28/36/44-PIN FAMILY
REGISTER 8-1:

OSCCON: OSCILLATOR CONTROL REGISTER

bit 18-16 PLLMULT<2:0>: Phase-Locked Loop (PLL) Multiplier bits
111 = Clock is multiplied by 24
110 = Clock is multiplied by 21
101 = Clock is multiplied by 20
100 = Clock is multiplied by 19
011 = Clock is multiplied by 18
010 = Clock is multiplied by 17
001 = Clock is multiplied by 16
000 = Clock is multiplied by 15
bit 15
Unimplemented: Read as ‘0’
bit 14-12 COSC<2:0>: Current Oscillator Selection bits
111 = Internal Fast RC (FRC) Oscillator divided by FRCDIV<2:0> bits (OSCCON<26:24>)
110 = Internal Fast RC (FRC) Oscillator divided by 16
101 = Internal Low-Power RC (LPRC) Oscillator
100 = Secondary Oscillator (SOSC)
011 = Primary Oscillator (POSC) with PLL module (XTPLL, HSPLL or ECPLL)
010 = Primary Oscillator (POSC) (XT, HS or EC)
001 = Internal Fast RC Oscillator with PLL module via Postscaler (FRCPLL)
000 = Internal Fast RC (FRC) Oscillator
bit 11
bit 10-8

Unimplemented: Read as ‘0’
NOSC<2:0>: New Oscillator Selection bits
111 = Internal Fast RC Oscillator (FRC) divided by OSCCON bits
110 = Internal Fast RC Oscillator (FRC) divided by 16
101 = Internal Low-Power RC (LPRC) Oscillator
100 = Secondary Oscillator (SOSC)
011 = Primary Oscillator with PLL module (XTPLL, HSPLL or ECPLL)
010 = Primary Oscillator (XT, HS or EC)
001 = Internal Fast Internal RC Oscillator with PLL module via Postscaler (FRCPLL)
000 = Internal Fast Internal RC Oscillator (FRC)
On Reset, these bits are set to the value of the FNOSC Configuration bits (DEVCFG1<2:0>).

bit 7

CLKLOCK: Clock Selection Lock Enable bit
If clock switching and monitoring is disabled (FCKSM<1:0> = 1x):
1 = Clock and PLL selections are locked
0 = Clock and PLL selections are not locked and may be modified
If clock switching and monitoring is enabled (FCKSM<1:0> = 0x):
Clock and PLL selections are never locked and may be modified.

bit 6

ULOCK: USB PLL Lock Status bit(1)
1 = The USB PLL module is in lock or USB PLL module start-up timer is satisfied
0 =The USB PLL module is out of lock or USB PLL module start-up timer is in progress or the USB PLL is
disabled

bit 5

SLOCK: PLL Lock Status bit
1 = The PLL module is in lock or PLL module start-up timer is satisfied
0 = The PLL module is out of lock, the PLL start-up timer is running, or the PLL is disabled
SLPEN: Sleep Mode Enable bit
1 = The device will enter Sleep mode when a WAIT instruction is executed
0 = The device will enter Idle mode when a WAIT instruction is executed

bit 4

Note 1:
Note:

This bit is only available on PIC32MX2XX devices.
Writes to this register require an unlock sequence. Refer to Section 6. “Oscillator” (DS60001112) in the
“PIC32 Family Reference Manual” for details.

 2011-2018 Microchip Technology Inc.

DS60001168K-page 79

PIC32MX1XX/2XX 28/36/44-PIN FAMILY
REGISTER 8-1:

OSCCON: OSCILLATOR CONTROL REGISTER

bit 3

CF: Clock Fail Detect bit
1 = FSCM has detected a clock failure
0 = No clock failure has been detected

bit 2

UFRCEN: USB FRC Clock Enable bit(1)
1 = Enable the FRC as the clock source for the USB clock source
0 = Use the Primary Oscillator or USB PLL as the USB clock source
SOSCEN: Secondary Oscillator (SOSC) Enable bit
1 = Enable the Secondary Oscillator
0 = Disable the Secondary Oscillator

bit 1

bit 0

OSWEN: Oscillator Switch Enable bit
1 = Initiate an oscillator switch to selection specified by NOSC<2:0> bits
0 = Oscillator switch is complete

Note 1:

This bit is only available on PIC32MX2XX devices.

Note:

Writes to this register require an unlock sequence. Refer to Section 6. “Oscillator” (DS60001112) in the
“PIC32 Family Reference Manual” for details.

DS60001168K-page 80

 2011-2018 Microchip Technology Inc.

PIC32MX1XX/2XX 28/36/44-PIN FAMILY
REGISTER 8-2:
Bit
Range
31:24
23:16
15:8
7:0

OSCTUN: FRC TUNING REGISTER

Bit
31/23/15/7

Bit
30/22/14/6

Bit
29/21/13/5

Bit
28/20/12/4

Bit
27/19/11/3

Bit
26/18/10/2

Bit
25/17/9/1

Bit
24/16/8/0

U-0

U-0

U-0

U-0

U-0

U-0

U-0

U-0

—

—

—

—

—

—

—

—

U-0

R-0

U-0

U-0

U-0

U-0

U-0

U-0

—

—

—

—

—

—

—

—

U-0

R-0

U-0

U-0

U-0

U-0

U-0

U-0

—

—

—

—

—

—

—

—

U-0

U-0

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

—

—

TUN<5:0>(1)

Legend:
R = Readable bit

W = Writable bit

U = Unimplemented bit, read as ‘0’

-n = Value at POR

‘1’ = Bit is set

‘0’ = Bit is cleared

bit 31-6

Unimplemented: Read as ‘0’

bit 5-0

TUN<5:0>: FRC Oscillator Tuning bits(1)
100000 = Center frequency -12.5%
100001 =
•
•
•
111111 =
000000 = Center frequency. Oscillator runs at minimal frequency (8 MHz)
000001 =
•
•
•
011110 =
011111 = Center frequency +12.5%

x = Bit is unknown

Note 1: OSCTUN functionality has been provided to help customers compensate for temperature effects on the
FRC frequency over a wide range of temperatures. The tuning step size is an approximation, and is neither
characterized, nor tested.
Note:

Writes to this register require an unlock sequence. Refer to Section 6. “Oscillator” (DS60001112) in the
“PIC32 Family Reference Manual” for details.

 2011-2018 Microchip Technology Inc.

DS60001168K-page 81

PIC32MX1XX/2XX 28/36/44-PIN FAMILY
REGISTER 8-3:
Bit
Range
31:24
23:16
15:8
7:0

REFOCON: REFERENCE OSCILLATOR CONTROL REGISTER

Bit
31/23/15/7

Bit
30/22/14/6

Bit
29/21/13/5

Bit
28/20/12/4

Bit
27/19/11/3

Bit
26/18/10/2

Bit
25/17/9/1

Bit
24/16/8/0

U-0

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

—
R/W-0

RODIV<14:8>(1,3)
R/W-0

R/W-0

R/W-0

R/W-0

RODIV<7:0>

(1,3)

R/W-0

U-0

R/W-0

R/W-0

R/W-0

U-0

R/W-0, HC

R-0, HS, HC

ON

—

SIDL

OE

RSLP(2)

—

DIVSWEN

ACTIVE

U-0

U-0

U-0

U-0

R/W-0

R/W-0

R/W-0

R/W-0

—

—

—

—

ROSEL<3:0>(1)

Legend:
R = Readable bit

HC = Hardware Clearable HS = Hardware Settable
W = Writable bit
U = Unimplemented bit, read as ‘0’

-n = Value at POR

‘1’ = Bit is set

‘0’ = Bit is cleared

x = Bit is unknown

bit 31
Unimplemented: Read as ‘0’
bit 30-16 RODIV<14:0> Reference Clock Divider bits(1,3)
The value selects the reference clock divider bits. See Figure 8-1 for information.
bit 15

ON: Output Enable bit
1 = Reference Oscillator module is enabled
0 = Reference Oscillator module is disabled
Unimplemented: Read as ‘0’

bit 14
bit 13

SIDL: Peripheral Stop in Idle Mode bit
1 = Discontinue module operation when the device enters Idle mode
0 = Continue module operation when the device enters Idle mode

bit 12

OE: Reference Clock Output Enable bit
1 = Reference clock is driven out on REFCLKO pin
0 = Reference clock is not driven out on REFCLKO pin
RSLP: Reference Oscillator Module Run in Sleep bit(2)
1 = Reference Oscillator module output continues to run in Sleep
0 = Reference Oscillator module output is disabled in Sleep

bit 11

bit 10
bit 9

Unimplemented: Read as ‘0’
DIVSWEN: Divider Switch Enable bit
1 = Divider switch is in progress
0 = Divider switch is complete

bit 8

ACTIVE: Reference Clock Request Status bit
1 = Reference clock request is active
0 = Reference clock request is not active
Unimplemented: Read as ‘0’

bit 7-4
Note 1:
2:
3:

The ROSEL and RODIV bits should not be written while the ACTIVE bit is ‘1’, as undefined behavior may
result.
This bit is ignored when the ROSEL<3:0> bits = 0000 or 0001.
While the ON bit is set to ‘1’, writes to these bits do not take effect until the DIVSWEN bit is also set to ’1’.

DS60001168K-page 82

 2011-2018 Microchip Technology Inc.

PIC32MX1XX/2XX 28/36/44-PIN FAMILY
REGISTER 8-3:

REFOCON: REFERENCE OSCILLATOR CONTROL REGISTER

bit 3-0

ROSEL<3:0>: Reference Clock Source Select bits(1)
1111 = Reserved; do not use
•
•
•
1001 = Reserved; do not use
1000 = REFCLKI
0111 = System PLL output
0110 = USB PLL output
0101 = SOSC
0100 = LPRC
0011 = FRC
0010 = POSC
0001 = PBCLK
0000 = SYSCLK

Note 1:

The ROSEL and RODIV bits should not be written while the ACTIVE bit is ‘1’, as undefined behavior may
result.
This bit is ignored when the ROSEL<3:0> bits = 0000 or 0001.
While the ON bit is set to ‘1’, writes to these bits do not take effect until the DIVSWEN bit is also set to ’1’.

2:
3:

 2011-2018 Microchip Technology Inc.

DS60001168K-page 83

PIC32MX1XX/2XX 28/36/44-PIN FAMILY
REGISTER 8-4:
Bit
Range
31:24
23:16
15:8
7:0

REFOTRIM: REFERENCE OSCILLATOR TRIM REGISTER

Bit
31/23/15/7

Bit
30/22/14/6

Bit
29/21/13/5

Bit
28/20/12/4

Bit
27/19/11/3

Bit
26/18/10/2

Bit
25/17/9/1

Bit
24/16/8/0

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

R-0

U-0

U-0

U-0

U-0

U-0

U-0

ROTRIM<0>

—

—

—

—

—

—

—

U-0

R-0

U-0

U-0

U-0

U-0

U-0

U-0

ROTRIM<8:1>

—

—

—

—

—

—

—

—

U-0

U-0

U-0

U-0

U-0

U-0

U-0

U-0

—

—

—

—

—

—

—

—

Legend:
R = Readable bit

W = Writable bit

U = Unimplemented bit, read as ‘0’

-n = Value at POR

‘1’ = Bit is set

‘0’ = Bit is cleared

x = Bit is unknown

bit 31-23 ROTRIM<8:0>: Reference Oscillator Trim bits
111111111 = 511/512 divisor added to RODIV value
111111110 = 510/512 divisor added to RODIV value
•
•
•
100000000 = 256/512 divisor added to RODIV value
•
•
•
000000010 = 2/512 divisor added to RODIV value
000000001 = 1/512 divisor added to RODIV value
000000000 = 0/512 divisor added to RODIV value
bit 22-0
Note:

Unimplemented: Read as ‘0’
While the ON (REFOCON<15>) bit is ‘1’, writes to this register do not take effect until the DIVSWEN bit is
also set to ‘1’.

DS60001168K-page 84

 2011-2018 Microchip Technology Inc.

PIC32MX1XX/2XX 28/36/44-PIN FAMILY
9.0
Note:

DIRECT MEMORY ACCESS
(DMA) CONTROLLER
This data sheet summarizes the features
of the PIC32MX1XX/2XX 28/36/44-pin
Family of devices. It is not intended to be
a comprehensive reference source. To
complement the information in this data
sheet, refer to Section 31. “Direct Memory
Access
(DMA)
Controller”
(DS60001117), which is available from the
Documentation > Reference Manual
section of the Microchip PIC32 web site
(www.microchip.com/pic32).

The PIC32 Direct Memory Access (DMA) controller is a
bus master module useful for data transfers between
different devices without CPU intervention. The source
and destination of a DMA transfer can be any of the
memory mapped modules existent in the PIC32, such
as Peripheral Bus devices: SPI, UART, PMP, etc., or
memory itself. Figure 9-1 show a block diagram of the
DMA Controller module.
The DMA Controller module has the following key
features:
• Four identical channels, each featuring:
- Auto-increment source and destination
address registers
- Source and destination pointers
- Memory to memory and memory to
peripheral transfers
• Automatic word-size detection:
- Transfer granularity, down to byte level
- Bytes need not be word-aligned at source
and destination

FIGURE 9-1:

DMA BLOCK DIAGRAM

Interrupt
Controller

System IRQ

Peripheral Bus

Address
Decoder

• Fixed priority channel arbitration
• Flexible DMA channel operating modes:
- Manual (software) or automatic (interrupt)
DMA requests
- One-Shot or Auto-Repeat Block Transfer
modes
- Channel-to-channel chaining
• Flexible DMA requests:
- A DMA request can be selected from any of
the peripheral interrupt sources
- Each channel can select any (appropriate)
observable interrupt as its DMA request
source
- A DMA transfer abort can be selected from
any of the peripheral interrupt sources
- Pattern (data) match transfer termination
• Multiple DMA channel status interrupts:
- DMA channel block transfer complete
- Source empty or half empty
- Destination full or half full
- DMA transfer aborted due to an external
event
- Invalid DMA address generated
• DMA debug support features:
- Most recent address accessed by a DMA
channel
- Most recent DMA channel to transfer data
• CRC Generation module:
- CRC module can be assigned to any of the
available channels
- CRC module is highly configurable

Channel 0
Control

SE
I0 L

Channel 1
Control

I1

Y

Bus
Interface

Device Bus and
Bus Arbitration

I2
Global Control
(DMACON)

Channel n
Control

In

L
SE

Channel Priority
Arbitration

 2011-2018 Microchip Technology Inc.

DS60001168K-page 85

DMA Control Registers
DMA GLOBAL REGISTER MAP

3000 DMACON
3010 DMASTAT
3020 DMAADDR

31/15

30/14

29/13

31:16

—

—

—

15:0

ON

31:16

—

—
—

—
—

15:0

—

—

—

All Resets

Bit Range

Bits
Register
Name(1)

Virtual Address
(BF88_#)

TABLE 9-1:

28/12

27/11

26/10

25/9

24/8

23/7

22/6

21/5

20/4

19/3

18/2

17/1

16/0

—

—

—

—

—

—

—

—

—

—

—

—

—

0000

—
—

—
—

—
—

—
—

—
—

—
—

—
—

—
—

—
—

—
—

—
—

0000
0000

—

—

—

—

—

—

—

RDWR

SUSPEND DMABUSY
—
—
—

—

31:16

DMACH<2:0>(2)

0000
0000

DMAADDR<31:0>

15:0

0000

Legend:

x = unknown value on Reset; — = unimplemented, read as ‘0’. Reset values are shown in hexadecimal.

Note 1:

All registers in this table have corresponding CLR, SET and INV registers at its virtual address, plus an offset of 0x4, 0x8 and 0xC, respectively. See Section 11.2 “CLR, SET and INV Registers” for more
information.

DMA CRC REGISTER MAP

31/15

30/14

—
—

—
—

29/13

28/12

BYTO<1:0>
—

27/11

26/10

25/9

24/8

23/7

WBO

—
PLEN<4:0>

—

BITO

—
CRCEN

22/6

21/5

—
—
CRCAPP CRCTYP

20/4

19/3

18/2

17/1

16/0

—
—

—
—

—

—
CRCCH<2:0>

—

All Resets

Bit Range

Bits
Register
Name(1)

Virtual Address
(BF88_#)

TABLE 9-2:

 2011-2018 Microchip Technology Inc.

3030 DCRCCON

31:16
15:0

3040 DCRCDATA

31:16
15:0

DCRCDATA<31:0>

0000
0000

3050 DCRCXOR

31:16
15:0

DCRCXOR<31:0>

0000
0000

Legend:
Note 1:

0000
0000

x = unknown value on Reset; — = unimplemented, read as ‘0’. Reset values are shown in hexadecimal.
All registers in this table have corresponding CLR, SET and INV registers at their virtual addresses, plus offsets of 0x4, 0x8 and 0xC, respectively. See Section 11.2 “CLR, SET and INV Registers” for
more information.

PIC32MX1XX/2XX 28/36/44-PIN FAMILY

DS60001168K-page 86

9.1

Virtual Address
(BF88_#)

3070 DCH0ECON
DCH0INT

3090 DCH0SSA
30A0 DCH0DSA
30B0 DCH0SSIZ
30C0 DCH0DSIZ
30D0 DCH0SPTR
30E0 DCH0DPTR
30F0 DCH0CSIZ
3100 DCH0CPTR
3110 DCH0DAT
3120 DCH1CON
3130 DCH1ECON
3140

DCH1INT

DS60001168K-page 87

3150 DCH1SSA
3160 DCH1DSA
Legend:
Note 1:

31/15

30/14

29/13

28/12

27/11

26/10

25/9

—

—

—

—

—

—

—

—

—

—

—

—
—

—
—

—
—

—
—

—
—

CHCHNS
—

CHEN

CHAED

CHCHN

CHAEN
—
CHAIRQ<7:0>

CHEDET

—

—
—

31:16

—

—

—

CHSIRQ<7:0>
—
—

—

—

—

CFORCE CABORT
CHSDIE CHSHIE

PATEN
CHDDIE

SIRQEN
CHDHIE

AIRQEN
CHBCIE

—
CHCCIE

—
CHTAIE

—
FF00
CHERIE 0000

15:0

—

—

—

—

—

—

—

CHSDIF

CHDDIF

CHDHIF

CHBCIF

CHCCIF

CHTAIF

CHERIF 0000
0000

31:16

15:0 CHBUSY
31:16
15:0

—

31:16
31:16
—

—

—

—

—

—

—

—

—

—

—

—

—

—

15:0
31:16

—

—

—

—

—

—

—

15:0
31:16

—

—

—

—

—

—

—

—
—
—
—

—

—

—

—

—

—

—

—

—

—

—

—

15:0
31:16

—

—

—

—

—

—

—

—

—
—

—
—

—
—

—
—

—
—

—
—

—
—

—
—

—

17/1

16/0

—

—

—

0000

CHPRI<1:0>

0000
00FF

0000
0000

—

0000
—

—

—

—

—

—

—

0000

—

—

—

—

—

—

—

—

0000

—

—

—

—

—

—

—

0000

—

—

—

—

—

—

—

—

—

—

—

—

—

—

0000

—

—

—

—

—

—

—

0000

—

—

—

—

—

—

—

0000

CHPDAT<7:0>
—
—

—

0000
0000

0000

—

0000

—

0000

—

—
—

—
—

—
—

—
—

—
—

—
—

CHCHNS
—

31:16

—

—

—

CHSIRQ<7:0>
—
—

—

—

—

15:0

—

—

—

—

—

—

—

—

—

—

0000

CHCPTR<15:0>

15:0

—

—

0000
0000

CHCSIZ<15:0>

15:0 CHBUSY

15:0
31:16

—

18/2

CHDPTR<15:0>

—

31:16

19/3

CHSPTR<15:0>

—

31:16

20/4

CHDSIZ<15:0>

—

31:16

CHSHIF

21/5

CHSSIZ<15:0>

15:0
31:16

15:0

22/6

CHDSA<31:0>

15:0
31:16

15:0
31:16

23/7

CHSSA<31:0>

15:0
15:0
31:16

24/8

All Resets

Bit Range

Register
Name(1)

Bits

3060 DCH0CON

3080

DMA CHANNELS 0-3 REGISTER MAP

0000

—

—

—

CHEN

CHAED

CHCHN

CHAEN
—
CHAIRQ<7:0>

CHEDET

CFORCE CABORT
CHSDIE CHSHIE

PATEN
CHDDIE

SIRQEN
CHDHIE

AIRQEN
CHBCIE

—
CHCCIE

—
CHTAIE

—
FF00
CHERIE 0000

CHSDIF

CHDDIF

CHDHIF

CHBCIF

CHCCIF

CHTAIF

CHERIF 0000
0000

CHSSA<31:0>

CHDSA<31:0>
15:0
x = unknown value on Reset; — = unimplemented, read as ‘0’. Reset values are shown in hexadecimal.

CHSHIF

—

—

CHPRI<1:0>

0000
00FF

0000
0000
0000

All registers in this table have corresponding CLR, SET and INV registers at their virtual addresses, plus offsets of 0x4, 0x8 and 0xC, respectively. See Section 11.2 “CLR, SET and INV Registers” for
more information.

PIC32MX1XX/2XX 28/36/44-PIN FAMILY

 2011-2018 Microchip Technology Inc.

TABLE 9-3:

Virtual Address
(BF88_#)

3180 DCH1DSIZ
3190 DCH1SPTR
31A0 DCH1DPTR
31B0 DCH1CSIZ
31C0 DCH1CPTR
31D0 DCH1DAT
31E0 DCH2CON
31F0 DCH2ECON
DCH2INT

3210 DCH2SSA
3220 DCH2DSA

 2011-2018 Microchip Technology Inc.

3230 DCH2SSIZ
3240 DCH2DSIZ
3250 DCH2SPTR
3260 DCH2DPTR
3270 DCH2CSIZ

31:16

31/15

30/14

29/13

28/12

27/11

26/10

25/9

—

—

—

—

—

—

—

—

—

—

—

—

—

—

15:0
31:16
15:0
31:16

—

—

—

—

—

—

—

15:0
31:16

—

—

—

—

—

—

—

15:0
31:16
15:0
31:16

24/8

—
—
CHSSIZ<15:0>
—
—
—

—

—

—

—

—

—

—

—

—

—

—

31:16

—

—

—

—

—

—

—

—

15:0

—
—

—
—

—
—

—
—

—
—

—
—

—
—

—
—

—

—
—

—
—

—
—

—
—

—
—

—
—

CHCHNS
—

31:16

—

—

—

CHSIRQ<7:0>
—
—

—

—

—

15:0

—

—

—

—

—

—

—

15:0

18/2

17/1

16/0

—

—

—

—

—

—

—

0000
0000

—

—

—

—

—

—

—

0000

—

—

—

—

—

—

—

—

0000

—

—

—

—

—

—

—

—

—

—

—

—

—

—

0000

—

—

—

—

—

—

—

0000

—

—

—

—

—

—

—

0000

CHPDAT<7:0>
—
—

—

0000
0000

0000

—

0000

—

—

—

15:0

—

31:16

—

0000
0000

—

—

—

CHEN

CHAED

CHCHN

CHAEN
—
CHAIRQ<7:0>

CHEDET

CFORCE CABORT
CHSDIE CHSHIE

PATEN
CHDDIE

SIRQEN
CHDHIE

AIRQEN
CHBCIE

—
CHCCIE

—
CHTAIE

—
FF00
CHERIE 0000

CHSDIF

CHDDIF

CHDHIF

CHBCIF

CHCCIF

CHTAIF

CHERIF 0000
0000

CHSHIF

—

—

CHPRI<1:0>

CHSSA<31:0>

15:0
31:16
—

—

—

—

—

—

15:0
31:16

—

—

—

—

—

—

—

15:0
31:16

—

—

—

—

—

—

—

15:0
31:16

—

—

—

—

—

—

—

—

—

0000
—

—

—

—

—

—

—

0000

—

—

—

—

—

—

—

0000

—

—

—

—

—

—

—

0000

—

—

—

—

—

—

—

—

—

—

—

—

—

—

CHSSIZ<15:0>
—

—

0000

CHDSIZ<15:0>
—

—

0000

CHSPTR<15:0>
—

—

0000

CHDPTR<15:0>
—

—

—

—

—

—

—

—

—

CHCSIZ<15:0>

0000
00FF

0000
0000

CHDSA<31:0>
—

0000
0000

CHCPTR<15:0>

15:0 CHBUSY

15:0

19/3

CHCSIZ<15:0>
—

15:0
31:16

20/4

CHDPTR<15:0>

—

15:0
31:16

21/5

CHSPTR<15:0>

—

31:16

—

22/6

CHDSIZ<15:0>

—

31:16

23/7

All Resets

Bit Range

Register
Name(1)

Bits

3170 DCH1SSIZ

3200

DMA CHANNELS 0-3 REGISTER MAP (CONTINUED)

0000
0000
0000
0000

Legend:

x = unknown value on Reset; — = unimplemented, read as ‘0’. Reset values are shown in hexadecimal.

Note 1:

All registers in this table have corresponding CLR, SET and INV registers at their virtual addresses, plus offsets of 0x4, 0x8 and 0xC, respectively. See Section 11.2 “CLR, SET and INV Registers” for
more information.

PIC32MX1XX/2XX 28/36/44-PIN FAMILY

DS60001168K-page 88

TABLE 9-3:

Virtual Address
(BF88_#)

3290 DCH2DAT
32A0 DCH3CON
32B0 DCH3ECON
DCH3INT

32D0 DCH3SSA
32E0 DCH3DSA
32F0 DCH3SSIZ
3300 DCH3DSIZ
3310 DCH3SPTR
3320 DCH3DPTR
3330 DCH3CSIZ
3340 DCH3CPTR
3350 DCH3DAT
Legend:

DS60001168K-page 89

Note 1:

31:16

31/15

30/14

29/13

28/12

27/11

26/10

25/9

—

—

—

—

—

—

—

15:0

24/8

23/7

22/6

21/5

20/4

19/3

18/2

17/1

16/0

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

CHCPTR<15:0>

All Resets

Bit Range

Register
Name(1)

Bits

3280 DCH2CPTR

32C0

DMA CHANNELS 0-3 REGISTER MAP (CONTINUED)

0000
0000

31:16

—

—

—

—

—

—

—

—

15:0

—

—

—

—

—

—

—

—

31:16

—

—

—

—

—

—

—

—

—

—

—

—
—

—
—

—
—

—
—

—
—

CHCHNS
—

CHEN

CHAED

CHCHN

CHAEN
—
CHAIRQ<7:0>

CHEDET

—

—
—

31:16

—

—

—

CHSIRQ<7:0>
—
—

—

—

—

CFORCE CABORT
CHSDIE CHSHIE

PATEN
CHDDIE

SIRQEN
CHDHIE

AIRQEN
CHBCIE

—
CHCCIE

—
CHTAIE

—
FF00
CHERIE 0000

15:0

—

—

—

—

—

—

—

CHSDIF

CHDDIF

CHDHIF

CHBCIF

CHCCIF

CHTAIF

CHERIF 0000
0000

15:0 CHBUSY
31:16
15:0

—

31:16

—

—

—

—

—

—

—

—

—

—

—

—

—

—

15:0
31:16

—

—

—

—

—

—

—

15:0
31:16

—

—

—

—

—

—

—

—

—

—

—

0000

CHPRI<1:0>

0000
00FF

0000
0000

—

—

0000
—

—

—

—

—

—

—

0000

—

—

—

—

—

—

—

0000

—

—

—

—

—

—

—

0000

—

—

—

—

—

—

—

—

—

—

—

—

—

—

0000

—

—

—

—

—

—

—

0000

—

—

—

—

—

—

—

CHSSIZ<15:0>
—

—

0000

CHDSIZ<15:0>
—

—

0000

CHSPTR<15:0>
—

—

0000

CHDPTR<15:0>
—

—

—

—

—

—

—

15:0
31:16

—

—

—

—

—

—

—

15:0
31:16

—

—

—

—

—

—

—

15:0

CHSHIF

—

—

—
—

0000

CHCPTR<15:0>
—

—
—
—
—
—
—
—
—
x = unknown value on Reset; — = unimplemented, read as ‘0’. Reset values are shown in hexadecimal.

—

0000
0000

CHCSIZ<15:0>
—

0000
0000

CHDSA<31:0>

15:0
31:16

15:0
31:16

CHPDAT<7:0>

CHSSA<31:0>

15:0
31:16
15:0
31:16

—

0000
CHPDAT<7:0>

0000
0000

All registers in this table have corresponding CLR, SET and INV registers at their virtual addresses, plus offsets of 0x4, 0x8 and 0xC, respectively. See Section 11.2 “CLR, SET and INV Registers” for
more information.

PIC32MX1XX/2XX 28/36/44-PIN FAMILY

 2011-2018 Microchip Technology Inc.

TABLE 9-3:

PIC32MX1XX/2XX 28/36/44-PIN FAMILY
REGISTER 9-1:
Bit
Range
31:24
23:16
15:8
7:0

Bit
31/23/15/7
U-0

DMACON: DMA CONTROLLER CONTROL REGISTER
Bit
Bit
30/22/14/6 29/21/13/5
U-0

Bit
28/20/12/4

Bit
27/19/11/3

Bit
26/18/10/2

Bit
25/17/9/1

Bit
24/16/8/0

U-0

U-0

U-0

U-0

U-0

U-0

—

—

—

—

—

—

—

—

U-0

U-0

U-0

U-0

U-0

U-0

U-0

U-0

—

—

—

—

—

—

—

—

R/W-0
(1)

U-0

U-0

R/W-0

R/W-0

U-0

U-0

U-0

—

—

SUSPEND

DMABUSY

—

—

—

U-0

U-0

U-0

U-0

U-0

U-0

U-0

U-0

—

—

—

—

—

—

—

—

ON

Legend:
R = Readable bit

W = Writable bit

U = Unimplemented bit, read as ‘0’

-n = Value at POR

‘1’ = Bit is set

‘0’ = Bit is cleared

x = Bit is unknown

bit 31-16 Unimplemented: Read as ‘0’
bit 15

ON: DMA On bit(1)
1 = DMA module is enabled
0 = DMA module is disabled

bit 14-13 Unimplemented: Read as ‘0’
bit 12

SUSPEND: DMA Suspend bit
1 = DMA transfers are suspended to allow CPU uninterrupted access to data bus
0 = DMA operates normally

bit 11

DMABUSY: DMA Module Busy bit
1 = DMA module is active
0 = DMA module is disabled and not actively transferring data

bit 10-0

Unimplemented: Read as ‘0’

Note 1:

When using 1:1 PBCLK divisor, the user’s software should not read/write the peripheral’s SFRs in the
SYSCLK cycle immediately following the instruction that clears the module’s ON bit.

DS60001168K-page 90

 2011-2018 Microchip Technology Inc.

PIC32MX1XX/2XX 28/36/44-PIN FAMILY
REGISTER 9-2:
Bit
Range
31:24
23:16
15:8
7:0

DMASTAT: DMA STATUS REGISTER

Bit
31/23/15/7

Bit
30/22/14/6

Bit
29/21/13/5

Bit
28/20/12/4

Bit
27/19/11/3

Bit
26/18/10/2

Bit
25/17/9/1

Bit
24/16/8/0

U-0

U-0

U-0

U-0

U-0

U-0

U-0

U-0

—

—

—

—

—

—

—

—

U-0

U-0

U-0

U-0

U-0

U-0

U-0

U-0

—

—

—

—

—

—

—

—

U-0

U-0

U-0

U-0

U-0

U-0

U-0

U-0

—

—

—

—

—

—

—

—

U-0

U-0

U-0

U-0

R-0

R-0

R-0

R-0

—

—

—

—

RDWR

DMACH<2:0>

Legend:
R = Readable bit

W = Writable bit

U = Unimplemented bit, read as ‘0’

-n = Value at POR

‘1’ = Bit is set

‘0’ = Bit is cleared

x = Bit is unknown

bit 31-4 Unimplemented: Read as ‘0’
bit 3

RDWR: Read/Write Status bit
1 = Last DMA bus access was a read
0 = Last DMA bus access was a write

bit 2-0

DMACH<2:0>: DMA Channel bits
These bits contain the value of the most recent active DMA channel.

REGISTER 9-3:
Bit
Range
31:24
23:16
15:8
7:0

DMAADDR: DMA ADDRESS REGISTER

Bit
31/23/15/7

Bit
30/22/14/6

Bit
29/21/13/5

R-0

R-0

R-0

Bit
28/20/12/4

Bit
27/19/11/3

Bit
26/18/10/2

Bit
25/17/9/1

Bit
24/16/8/0

R-0

R-0

R-0

R-0

R-0

R-0

R-0

R-0

R-0

R-0

R-0

R-0

R-0

R-0

DMAADDR<31:24>
R-0

R-0

R-0

R-0

R-0

R-0

R-0

R-0

DMAADDR<23:16>
R-0

R-0

DMAADDR<15:8>
R-0

R-0

R-0

R-0

R-0

DMAADDR<7:0>

Legend:
R = Readable bit

W = Writable bit

U = Unimplemented bit, read as ‘0’

-n = Value at POR

‘1’ = Bit is set

‘0’ = Bit is cleared

x = Bit is unknown

bit 31-0 DMAADDR<31:0>: DMA Module Address bits
These bits contain the address of the most recent DMA access.

 2011-2018 Microchip Technology Inc.

DS60001168K-page 91

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REGISTER 9-4:
Bit
Range
31:24
23:16
15:8
7:0

DCRCCON: DMA CRC CONTROL REGISTER

Bit
31/23/15/7

Bit
30/22/14/6

Bit
29/21/13/5

Bit
28/20/12/4

U-0

U-0

R/W-0

R/W-0

BYTO<1:0>

Bit
27/19/11/3

Bit
26/18/10/2

Bit
25/17/9/1

Bit
24/16/8/0

U-0

U-0

R/W-0

R/W-0
(1)

—

—

WBO

—

—

BITO

U-0

U-0

U-0

U-0

U-0

U-0

U-0

U-0

—

—

—

—

—

—

—

—

U-0

U-0

U-0

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

—

—

—

R/W-0

R/W-0

R/W-0

U-0

U-0

PLEN<4:0>

CRCEN

CRCAPP(1)

CRCTYP

—

—

R/W-0

CRCCH<2:0>

Legend:
R = Readable bit

W = Writable bit

U = Unimplemented bit, read as ‘0’

-n = Value at POR

‘1’ = Bit is set

‘0’ = Bit is cleared

x = Bit is unknown

bit 31-30 Unimplemented: Read as ‘0’
bit 29-28 BYTO<1:0>: CRC Byte Order Selection bits
11 = Endian byte swap on half-word boundaries (i.e., source half-word order with reverse source byte order
per half-word)
10 = Swap half-words on word boundaries (i.e., reverse source half-word order with source byte order per
half-word)
01 = Endian byte swap on word boundaries (i.e., reverse source byte order)
00 = No swapping (i.e., source byte order)
bit 27

WBO: CRC Write Byte Order Selection bit(1)
1 = Source data is written to the destination re-ordered as defined by BYTO<1:0>
0 = Source data is written to the destination unaltered

bit 26-25 Unimplemented: Read as ‘0’
bit 24

BITO: CRC Bit Order Selection bit
When CRCTYP (DCRCCON<15>) = 1 (CRC module is in IP Header mode):
1 = The IP header checksum is calculated Least Significant bit (LSb) first (i.e., reflected)
0 = The IP header checksum is calculated Most Significant bit (MSb) first (i.e., not reflected)
When CRCTYP (DCRCCON<15>) = 0 (CRC module is in LFSR mode):
1 = The LFSR CRC is calculated Least Significant bit first (i.e., reflected)
0 = The LFSR CRC is calculated Most Significant bit first (i.e., not reflected)

bit 23-13 Unimplemented: Read as ‘0’
bit 12-8

PLEN<4:0>: Polynomial Length bits
When CRCTYP (DCRCCON<15>) = 1 (CRC module is in IP Header mode):
These bits are unused.
When CRCTYP (DCRCCON<15>) = 0 (CRC module is in LFSR mode):
Denotes the length of the polynomial – 1.

bit 7

CRCEN: CRC Enable bit
1 = CRC module is enabled and channel transfers are routed through the CRC module
0 = CRC module is disabled and channel transfers proceed normally

Note 1:

When WBO = 1, unaligned transfers are not supported and the CRCAPP bit cannot be set.

DS60001168K-page 92

 2011-2018 Microchip Technology Inc.

PIC32MX1XX/2XX 28/36/44-PIN FAMILY
REGISTER 9-4:

DCRCCON: DMA CRC CONTROL REGISTER (CONTINUED)

bit 6

CRCAPP: CRC Append Mode bit(1)
1 = The DMA transfers data from the source into the CRC but NOT to the destination. When a block transfer
completes the DMA writes the calculated CRC value to the location given by CHxDSA
0 = The DMA transfers data from the source through the CRC obeying WBO as it writes the data to the
destination

bit 5

CRCTYP: CRC Type Selection bit
1 = The CRC module will calculate an IP header checksum
0 = The CRC module will calculate a LFSR CRC

bit 4-3

Unimplemented: Read as ‘0’

bit 2-0

CRCCH<2:0>: CRC Channel Select bits
111 = CRC is assigned to Channel 7
110 = CRC is assigned to Channel 6
101 = CRC is assigned to Channel 5
100 = CRC is assigned to Channel 4
011 = CRC is assigned to Channel 3
010 = CRC is assigned to Channel 2
001 = CRC is assigned to Channel 1
000 = CRC is assigned to Channel 0

Note 1:

When WBO = 1, unaligned transfers are not supported and the CRCAPP bit cannot be set.

 2011-2018 Microchip Technology Inc.

DS60001168K-page 93

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REGISTER 9-5:
Bit
Range
31:24
23:16
15:8
7:0

DCRCDATA: DMA CRC DATA REGISTER

Bit
31/23/15/7

Bit
30/22/14/6

Bit
29/21/13/5

R/W-0

R/W-0

R/W-0

Bit
28/20/12/4

Bit
27/19/11/3

Bit
26/18/10/2

Bit
25/17/9/1

Bit
24/16/8/0

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

DCRCDATA<31:24>
R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

DCRCDATA<23:16>
R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

DCRCDATA<15:8>
R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

DCRCDATA<7:0>

Legend:
R = Readable bit

W = Writable bit

U = Unimplemented bit, read as ‘0’

-n = Value at POR

‘1’ = Bit is set

‘0’ = Bit is cleared

x = Bit is unknown

bit 31-0 DCRCDATA<31:0>: CRC Data Register bits
Writing to this register will seed the CRC generator. Reading from this register will return the current value of
the CRC. Bits greater than PLEN will return ‘0’ on any read.
When CRCTYP (DCRCCON<15>) = 1 (CRC module is in IP Header mode):
Only the lower 16 bits contain IP header checksum information. The upper 16 bits are always ‘0’. Data written
to this register is converted and read back in 1’s complement form (i.e., current IP header checksum value).
When CRCTYP (DCRCCON<15>) = 0 (CRC module is in LFSR mode):
Bits greater than PLEN will return ‘0’ on any read.

REGISTER 9-6:
Bit
Range
31:24
23:16
15:8
7:0

DCRCXOR: DMA CRCXOR ENABLE REGISTER

Bit
31/23/15/7

Bit
30/22/14/6

Bit
29/21/13/5

Bit
28/20/12/4

Bit
27/19/11/3

Bit
26/18/10/2

Bit
25/17/9/1

Bit
24/16/8/0

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

DCRCXOR<31:24>
R/W-0

R/W-0

DCRCXOR<23:16>
R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

DCRCXOR<15:8>
R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

DCRCXOR<7:0>

Legend:
R = Readable bit

W = Writable bit

U = Unimplemented bit, read as ‘0’

-n = Value at POR

‘1’ = Bit is set

‘0’ = Bit is cleared

x = Bit is unknown

bit 31-0 DCRCXOR<31:0>: CRC XOR Register bits
When CRCTYP (DCRCCON<15>) = 1 (CRC module is in IP Header mode):
This register is unused.
When CRCTYP (DCRCCON<15>) = 0 (CRC module is in LFSR mode):
1 = Enable the XOR input to the Shift register
0 = Disable the XOR input to the Shift register; data is shifted in directly from the previous stage in
the register

DS60001168K-page 94

 2011-2018 Microchip Technology Inc.

PIC32MX1XX/2XX 28/36/44-PIN FAMILY
REGISTER 9-7:
Bit
Range
31:24
23:16
15:8
7:0

DCHxCON: DMA CHANNEL ‘x’ CONTROL REGISTER

Bit
31/23/15/7

Bit
30/22/14/6

Bit
29/21/13/5

Bit
28/20/12/4

Bit
27/19/11/3

Bit
26/18/10/2

Bit
25/17/9/1

Bit
24/16/8/0

U-0

U-0

U-0

U-0

U-0

U-0

U-0

U-0

—

—

—

—

—

—

—

—

U-0

U-0

U-0

U-0

U-0

U-0

U-0

U-0

—

—

—

—

—

—

—

—

R/W-0

U-0

U-0

U-0

U-0

U-0

U-0

R/W-0

CHBUSY

—

—

—

—

—

—

CHCHNS(1)

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

U-0

R-0

CHEN(2)

CHAED

CHCHN

CHAEN

—

CHEDET

CHPRI<1:0>

Legend:
R = Readable bit

W = Writable bit

U = Unimplemented bit, read as ‘0’

-n = Value at POR

‘1’ = Bit is set

‘0’ = Bit is cleared

x = Bit is unknown

bit 31-16 Unimplemented: Read as ‘0’
bit 15

CHBUSY: Channel Busy bit
1 = Channel is active or has been enabled
0 = Channel is inactive or has been disabled

bit 14-9

Unimplemented: Read as ‘0’

bit 8

CHCHNS: Chain Channel Selection bit(1)
1 = Chain to channel lower in natural priority (CH1 will be enabled by CH2 transfer complete)
0 = Chain to channel higher in natural priority (CH1 will be enabled by CH0 transfer complete)

bit 7

CHEN: Channel Enable bit(2)
1 = Channel is enabled
0 = Channel is disabled

bit 6

CHAED: Channel Allow Events If Disabled bit
1 = Channel start/abort events will be registered, even if the channel is disabled
0 = Channel start/abort events will be ignored if the channel is disabled

bit

CHCHN: Channel Chain Enable bit
1 = Allow channel to be chained
0 = Do not allow channel to be chained

bit 4

CHAEN: Channel Automatic Enable bit
1 = Channel is continuously enabled, and not automatically disabled after a block transfer is complete
0 = Channel is disabled on block transfer complete

bit 3

Unimplemented: Read as ‘0’

bit 2

CHEDET: Channel Event Detected bit
1 = An event has been detected
0 = No events have been detected

bit 1-0

CHPRI<1:0>: Channel Priority bits
11 = Channel has priority 3 (highest)
10 = Channel has priority 2
01 = Channel has priority 1
00 = Channel has priority 0

Note 1:
2:

The chain selection bit takes effect when chaining is enabled (i.e., CHCHN = 1).
When the channel is suspended by clearing this bit, the user application should poll the CHBUSY bit (if
available on the device variant) to see when the channel is suspended, as it may take some clock cycles
to complete a current transaction before the channel is suspended.

 2011-2018 Microchip Technology Inc.

DS60001168K-page 95

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REGISTER 9-8:
Bit
Range
31:24
23:16

DCHxECON: DMA CHANNEL ‘x’ EVENT CONTROL REGISTER

Bit
31/23/15/7

Bit
30/22/14/6

Bit
29/21/13/5

Bit
28/20/12/4

Bit
27/19/11/3

Bit
26/18/10/2

Bit
25/17/9/1

Bit
24/16/8/0

U-0

U-0

U-0

U-0

U-0

U-0

U-0

U-0

—

—

—

—

—

—

—

—

R/W-1

R/W-1

R/W-1

R/W-1

R/W-1
(1)

R/W-1

R/W-1

R/W-1

R/W-1

R/W-1

R/W-1

R/W-1

R/W-1

R/W-1

R/W-1

CHAIRQ<7:0>

15:8

R/W-1

CHSIRQ<7:0>(1)

7:0

S-0

S-0

R/W-0

R/W-0

R/W-0

U-0

U-0

U-0

CFORCE

CABORT

PATEN

SIRQEN

AIRQEN

—

—

—

Legend:
R = Readable bit
-n = Value at POR

S = Settable bit
W = Writable bit
‘1’ = Bit is set

U = Unimplemented bit, read as ‘0’
‘0’ = Bit is cleared
x = Bit is unknown

bit 31-24 Unimplemented: Read as ‘0’
bit 23-16 CHAIRQ<7:0>: Channel Transfer Abort IRQ bits(1)
11111111 = Interrupt 255 will abort any transfers in progress and set CHAIF flag
•
•
•

bit 15-8

00000001 = Interrupt 1 will abort any transfers in progress and set CHAIF flag
00000000 = Interrupt 0 will abort any transfers in progress and set CHAIF flag
CHSIRQ<7:0>: Channel Transfer Start IRQ bits(1)
11111111 = Interrupt 255 will initiate a DMA transfer
•
•
•

bit 2-0

00000001 = Interrupt 1 will initiate a DMA transfer
00000000 = Interrupt 0 will initiate a DMA transfer
CFORCE: DMA Forced Transfer bit
1 = A DMA transfer is forced to begin when this bit is written to a ‘1’
0 = This bit always reads ‘0’
CABORT: DMA Abort Transfer bit
1 = A DMA transfer is aborted when this bit is written to a ‘1’
0 = This bit always reads ‘0’
PATEN: Channel Pattern Match Abort Enable bit
1 = Abort transfer and clear CHEN on pattern match
0 = Pattern match is disabled
SIRQEN: Channel Start IRQ Enable bit
1 = Start channel cell transfer if an interrupt matching CHSIRQ occurs
0 = Interrupt number CHSIRQ is ignored and does not start a transfer
AIRQEN: Channel Abort IRQ Enable bit
1 = Channel transfer is aborted if an interrupt matching CHAIRQ occurs
0 = Interrupt number CHAIRQ is ignored and does not terminate a transfer
Unimplemented: Read as ‘0’

Note 1:

See Table 7-1: “Interrupt IRQ, Vector and Bit Location” for the list of available interrupt IRQ sources.

bit 7

bit 6

bit 5

bit 4

bit 3

DS60001168K-page 96

 2011-2018 Microchip Technology Inc.

PIC32MX1XX/2XX 28/36/44-PIN FAMILY
REGISTER 9-9:
Bit
Range
31:24
23:16
15:8
7:0

DCHxINT: DMA CHANNEL ‘x’ INTERRUPT CONTROL REGISTER

Bit
31/23/15/7

Bit
30/22/14/6

Bit
29/21/13/5

Bit
28/20/12/4

Bit
27/19/11/3

Bit
26/18/10/2

Bit
25/17/9/1

Bit
24/16/8/0

U-0

U-0

U-0

U-0

U-0

U-0

U-0

U-0

—

—

—

—

—

—

—

—

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

CHSDIE

CHSHIE

CHDDIE

CHDHIE

CHBCIE

CHCCIE

CHTAIE

CHERIE

U-0

U-0

U-0

U-0

U-0

U-0

U-0

U-0

—

—

—

—

—

—

—

—

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

CHSDIF

CHSHIF

CHDDIF

CHDHIF

CHBCIF

CHCCIF

CHTAIF

CHERIF

Legend:
R = Readable bit

W = Writable bit

U = Unimplemented bit, read as ‘0’

-n = Value at POR

‘1’ = Bit is set

‘0’ = Bit is cleared

x = Bit is unknown

bit 31-24 Unimplemented: Read as ‘0’
bit 23

CHSDIE: Channel Source Done Interrupt Enable bit
1 = Interrupt is enabled
0 = Interrupt is disabled

bit 22

CHSHIE: Channel Source Half Empty Interrupt Enable bit
1 = Interrupt is enabled
0 = Interrupt is disabled

bit 21

CHDDIE: Channel Destination Done Interrupt Enable bit
1 = Interrupt is enabled
0 = Interrupt is disabled

bit 20

CHDHIE: Channel Destination Half Full Interrupt Enable bit
1 = Interrupt is enabled
0 = Interrupt is disabled

bit 19

CHBCIE: Channel Block Transfer Complete Interrupt Enable bit
1 = Interrupt is enabled
0 = Interrupt is disabled

bit 18

CHCCIE: Channel Cell Transfer Complete Interrupt Enable bit
1 = Interrupt is enabled
0 = Interrupt is disabled

bit 17

CHTAIE: Channel Transfer Abort Interrupt Enable bit
1 = Interrupt is enabled
0 = Interrupt is disabled

bit 16

CHERIE: Channel Address Error Interrupt Enable bit
1 = Interrupt is enabled
0 = Interrupt is disabled

bit 15-8

Unimplemented: Read as ‘0’

bit 7

CHSDIF: Channel Source Done Interrupt Flag bit
1 = Channel Source Pointer has reached end of source (CHSPTR = CHSSIZ)
0 = No interrupt is pending

bit 6

CHSHIF: Channel Source Half Empty Interrupt Flag bit
1 = Channel Source Pointer has reached midpoint of source (CHSPTR = CHSSIZ/2)
0 = No interrupt is pending

bit 5

CHDDIF: Channel Destination Done Interrupt Flag bit
1 = Channel Destination Pointer has reached end of destination (CHDPTR = CHDSIZ)
0 = No interrupt is pending

 2011-2018 Microchip Technology Inc.

DS60001168K-page 97

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REGISTER 9-9:

DCHxINT: DMA CHANNEL ‘x’ INTERRUPT CONTROL REGISTER (CONTINUED)

bit 4

CHDHIF: Channel Destination Half Full Interrupt Flag bit
1 = Channel Destination Pointer has reached midpoint of destination (CHDPTR = CHDSIZ/2)
0 = No interrupt is pending

bit 3

CHBCIF: Channel Block Transfer Complete Interrupt Flag bit
1 = A block transfer has been completed (the larger of CHSSIZ/CHDSIZ bytes has been transferred), or a
pattern match event occurs
0 = No interrupt is pending

bit 2

CHCCIF: Channel Cell Transfer Complete Interrupt Flag bit
1 = A cell transfer has been completed (CHCSIZ bytes have been transferred)
0 = No interrupt is pending

bit 1

CHTAIF: Channel Transfer Abort Interrupt Flag bit
1 = An interrupt matching CHAIRQ has been detected and the DMA transfer has been aborted
0 = No interrupt is pending

bit 0

CHERIF: Channel Address Error Interrupt Flag bit
1 = A channel address error has been detected (either the source or the destination address is invalid)
0 = No interrupt is pending

DS60001168K-page 98

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PIC32MX1XX/2XX 28/36/44-PIN FAMILY
REGISTER 9-10:
Bit Range

DCHxSSA: DMA CHANNEL ‘x’ SOURCE START ADDRESS REGISTER

Bit
31/23/15/7

Bit
30/22/14/6

R/W-0

R/W-0

31:24

Bit
Bit
Bit
Bit
29/21/13/5 28/20/12/4 27/19/11/3 26/18/10/2
R/W-0

R/W-0

R/W-0

Bit
25/17/9/1

Bit
24/16/8/0

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

CHSSA<31:24>
R/W-0

23:16

R/W-0

R/W-0

R/W-0

R/W-0

CHSSA<23:16>
R/W-0

15:8

R/W-0

R/W-0

R/W-0

R/W-0

CHSSA<15:8>
R/W-0

7:0

R/W-0

R/W-0

R/W-0

R/W-0

CHSSA<7:0>

Legend:
R = Readable bit

W = Writable bit

U = Unimplemented bit, read as ‘0’

-n = Value at POR

‘1’ = Bit is set

‘0’ = Bit is cleared

bit 31-0

x = Bit is unknown

CHSSA<31:0> Channel Source Start Address bits
Channel source start address.
Note: This must be the physical address of the source.

REGISTER 9-11:
Bit
Range
31:24
23:16
15:8
7:0

DCHxDSA: DMA CHANNEL ‘x’ DESTINATION START ADDRESS REGISTER

Bit
31/23/15/7

Bit
30/22/14/6

Bit
29/21/13/5

Bit
28/20/12/4

Bit
27/19/11/3

Bit
26/18/10/2

Bit
25/17/9/1

Bit
24/16/8/0

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

CHDSA<31:24>
R/W-0

R/W-0

CHDSA<23:16>
R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

CHDSA<15:8>
R/W-0

CHDSA<7:0>

Legend:
R = Readable bit

W = Writable bit

U = Unimplemented bit, read as ‘0’

-n = Value at POR

‘1’ = Bit is set

‘0’ = Bit is cleared

x = Bit is unknown

bit 31-0 CHDSA<31:0>: Channel Destination Start Address bits
Channel destination start address.
Note: This must be the physical address of the destination.

 2011-2018 Microchip Technology Inc.

DS60001168K-page 99

PIC32MX1XX/2XX 28/36/44-PIN FAMILY
REGISTER 9-12:
Bit
Range
31:24
23:16
15:8

DCHxSSIZ: DMA CHANNEL ‘x’ SOURCE SIZE REGISTER

Bit
31/23/15/7

Bit
30/22/14/6

Bit
29/21/13/5

Bit
28/20/12/4

Bit
27/19/11/3

Bit
26/18/10/2

Bit
25/17/9/1

Bit
24/16/8/0

U-0

U-0

U-0

U-0

U-0

U-0

U-0

U-0

—

—

—

—

—

—

—

—

U-0

U-0

U-0

U-0

U-0

U-0

U-0

U-0

—

—

—

—

—

—

—

—

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

CHSSIZ<15:8>

7:0

R/W-0

CHSSIZ<7:0>

Legend:
R = Readable bit
-n = Value at POR

W = Writable bit
‘1’ = Bit is set

U = Unimplemented bit, read as ‘0’
‘0’ = Bit is cleared
x = Bit is unknown

bit 31-16 Unimplemented: Read as ‘0’
bit 15-0

CHSSIZ<15:0>: Channel Source Size bits
1111111111111111 = 65,535 byte source size
•
•
•

0000000000000010 = 2 byte source size
0000000000000001 = 1 byte source size
0000000000000000 = 65,536 byte source size

REGISTER 9-13:
Bit
Range
31:24
23:16
15:8

DCHxDSIZ: DMA CHANNEL ‘x’ DESTINATION SIZE REGISTER

Bit
31/23/15/7

Bit
30/22/14/6

Bit
29/21/13/5

Bit
28/20/12/4

Bit
27/19/11/3

Bit
26/18/10/2

Bit
25/17/9/1

Bit
24/16/8/0

U-0

U-0

U-0

U-0

U-0

U-0

U-0

U-0

—

—

—

—

—

—

—

—

U-0

U-0

U-0

U-0

U-0

U-0

U-0

U-0

—

—

—

—

—

—

—

—

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

CHDSIZ<15:8>

7:0

R/W-0

CHDSIZ<7:0>

Legend:
R = Readable bit

W = Writable bit

U = Unimplemented bit, read as ‘0’

-n = Value at POR

‘1’ = Bit is set

‘0’ = Bit is cleared

x = Bit is unknown

bit 31-16 Unimplemented: Read as ‘0’
bit 15-0 CHDSIZ<15:0>: Channel Destination Size bits
1111111111111111 = 65,535 byte destination size
•
•
•

0000000000000010 = 2 byte destination size
0000000000000001 = 1 byte destination size
0000000000000000 = 65,536 byte destination size

DS60001168K-page 100

 2011-2018 Microchip Technology Inc.

PIC32MX1XX/2XX 28/36/44-PIN FAMILY
REGISTER 9-14:
Bit
Range
31:24
23:16
15:8

DCHxSPTR: DMA CHANNEL ‘x’ SOURCE POINTER REGISTER

Bit
31/23/15/7

Bit
30/22/14/6

Bit
29/21/13/5

Bit
28/20/12/4

Bit
27/19/11/3

Bit
26/18/10/2

Bit
25/17/9/1

Bit
24/16/8/0

U-0

U-0

U-0

U-0

U-0

U-0

U-0

U-0

—

—

—

—

—

—

—

—

U-0

U-0

U-0

U-0

U-0

U-0

U-0

U-0

—

—

—

—

—

—

—

—

R-0

R-0

R-0

R-0

R-0

R-0

R-0

R-0

R-0

R-0

R-0

R-0

R-0

R-0

CHSPTR<15:8>

7:0

R-0

R-0

CHSPTR<7:0>

Legend:
R = Readable bit
-n = Value at POR

W = Writable bit
‘1’ = Bit is set

U = Unimplemented bit, read as ‘0’
‘0’ = Bit is cleared
x = Bit is unknown

bit 31-16 Unimplemented: Read as ‘0’
bit 15-0

CHSPTR<15:0>: Channel Source Pointer bits
1111111111111111 = Points to byte 65,535 of the source
•
•
•

0000000000000001 = Points to byte 1 of the source
0000000000000000 = Points to byte 0 of the source
When in Pattern Detect mode, this register is reset on a pattern detect.

Note:

REGISTER 9-15:
Bit
Range
31:24
23:16
15:8

DCHxDPTR: DMA CHANNEL ‘x’ DESTINATION POINTER REGISTER

Bit
31/23/15/7

Bit
30/22/14/6

Bit
29/21/13/5

Bit
28/20/12/4

Bit
27/19/11/3

Bit
26/18/10/2

Bit
25/17/9/1

Bit
24/16/8/0

U-0

U-0

U-0

U-0

U-0

U-0

U-0

U-0

—

—

—

—

—

—

—

—

U-0

U-0

U-0

U-0

U-0

U-0

U-0

U-0

—

—

—

—

—

—

—

—

R-0

R-0

R-0

R-0

R-0

R-0

R-0

R-0

R-0

R-0

R-0

R-0

R-0

R-0

CHDPTR<15:8>

7:0

R-0

R-0

CHDPTR<7:0>

Legend:
R = Readable bit
-n = Value at POR

W = Writable bit
‘1’ = Bit is set

U = Unimplemented bit, read as ‘0’
‘0’ = Bit is cleared
x = Bit is unknown

bit 31-16 Unimplemented: Read as ‘0’
bit 15-0

CHDPTR<15:0>: Channel Destination Pointer bits
1111111111111111 = Points to byte 65,535 of the destination
•
•
•

0000000000000001 = Points to byte 1 of the destination
0000000000000000 = Points to byte 0 of the destination

 2011-2018 Microchip Technology Inc.

DS60001168K-page 101

PIC32MX1XX/2XX 28/36/44-PIN FAMILY
REGISTER 9-16:
Bit
Range
31:24
23:16
15:8

DCHxCSIZ: DMA CHANNEL ‘x’ CELL-SIZE REGISTER

Bit
31/23/15/7

Bit
30/22/14/6

Bit
29/21/13/5

Bit
28/20/12/4

Bit
27/19/11/3

Bit
26/18/10/2

Bit
25/17/9/1

Bit
24/16/8/0

U-0

U-0

U-0

U-0

U-0

U-0

U-0

U-0

—

—

—

—

—

—

—

—

U-0

U-0

U-0

U-0

U-0

U-0

U-0

U-0

—

—

—

—

—

—

—

—

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

CHCSIZ<15:8>

7:0

R/W-0

CHCSIZ<7:0>

Legend:
R = Readable bit
-n = Value at POR

W = Writable bit
‘1’ = Bit is set

U = Unimplemented bit, read as ‘0’
‘0’ = Bit is cleared
x = Bit is unknown

bit 31-16 Unimplemented: Read as ‘0’
bit 15-0

CHCSIZ<15:0>: Channel Cell Size bits
1111111111111111 = 65,535 bytes transferred on an event
•
•
•

0000000000000010 = 2 bytes transferred on an event
0000000000000001= 1 byte transferred on an event
0000000000000000 = 65,536 bytes transferred on an event

REGISTER 9-17:
Bit
Range
31:24
23:16
15:8

DCHxCPTR: DMA CHANNEL ‘x’ CELL POINTER REGISTER

Bit
31/23/15/7

Bit
30/22/14/6

Bit
29/21/13/5

Bit
28/20/12/4

Bit
27/19/11/3

Bit
26/18/10/2

Bit
25/17/9/1

Bit
24/16/8/0

U-0

U-0

U-0

U-0

U-0

U-0

U-0

U-0

—

—

—

—

—

—

—

—

U-0

U-0

U-0

U-0

U-0

U-0

U-0

U-0

—

—

—

—

—

—

—

—

R-0

R-0

R-0

R-0

R-0

R-0

R-0

R-0

R-0

R-0

R-0

R-0

R-0

R-0

CHCPTR<15:8>

7:0

R-0

R-0

CHCPTR<7:0>

Legend:
R = Readable bit

W = Writable bit

U = Unimplemented bit, read as ‘0’

-n = Value at POR

‘1’ = Bit is set

‘0’ = Bit is cleared

x = Bit is unknown

bit 31-16 Unimplemented: Read as ‘0’
bit 15-0 CHCPTR<15:0>: Channel Cell Progress Pointer bits
1111111111111111 = 65,535 bytes have been transferred since the last event
•
•
•

0000000000000001 = 1 byte has been transferred since the last event
0000000000000000 = 0 bytes have been transferred since the last event
Note:

When in Pattern Detect mode, this register is reset on a pattern detect.

DS60001168K-page 102

 2011-2018 Microchip Technology Inc.

PIC32MX1XX/2XX 28/36/44-PIN FAMILY
REGISTER 9-18:
Bit
Range
31:24
23:16
15:8
7:0

DCHxDAT: DMA CHANNEL ‘x’ PATTERN DATA REGISTER

Bit
31/23/15/7

Bit
30/22/14/6

Bit
29/21/13/5

Bit
28/20/12/4

Bit
27/19/11/3

Bit
26/18/10/2

Bit
25/17/9/1

Bit
24/16/8/0

U-0

U-0

U-0

U-0

U-0

U-0

U-0

U-0

—

—

—

—

—

—

—

—

U-0

U-0

U-0

U-0

U-0

U-0

U-0

U-0

—

—

—

—

—

—

—

—

U-0

U-0

U-0

U-0

U-0

U-0

U-0

U-0

—

—

—

—

—

—

—

—

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

CHPDAT<7:0>

Legend:
R = Readable bit

W = Writable bit

U = Unimplemented bit, read as ‘0’

-n = Value at POR

‘1’ = Bit is set

‘0’ = Bit is cleared

x = Bit is unknown

bit 31-8 Unimplemented: Read as ‘0’
bit 7-0

CHPDAT<7:0>: Channel Data Register bits
Pattern Terminate mode:
Data to be matched must be stored in this register to allow a “terminate on match”.
All other modes:
Unused.

 2011-2018 Microchip Technology Inc.

DS60001168K-page 103

PIC32MX1XX/2XX 28/36/44-PIN FAMILY
NOTES:

DS60001168K-page 104

 2011-2018 Microchip Technology Inc.

PIC32MX1XX/2XX 28/36/44-PIN FAMILY
10.0
Note:

USB ON-THE-GO (OTG)
This data sheet summarizes the features
of the PIC32MX1XX/2XX 28/36/44-pin
Family of devices. It is not intended to be
a comprehensive reference source. To
complement the information in this data
sheet, refer to Section 27. “USB On-TheGo (OTG)” (DS60001126), which is available from the Documentation > Reference
Manual section of the Microchip PIC32
web site (www.microchip.com/pic32).

The Universal Serial Bus (USB) module contains
analog and digital components to provide a USB 2.0
Full-Speed and Low-Speed embedded host, FullSpeed device or OTG implementation with a minimum
of external components. This module in Host mode is
intended for use as an embedded host and therefore
does not implement a UHCI or OHCI controller.
The USB module consists of the clock generator, the
USB voltage comparators, the transceiver, the Serial
Interface Engine (SIE), a dedicated USB DMA controller, pull-up and pull-down resistors, and the register
interface. A block diagram of the PIC32 USB OTG
module is presented in Figure 10-1.

The PIC32 USB module includes the following
features:
•
•
•
•
•
•
•
•
•

USB Full-Speed support for Host and Device
Low-Speed Host support
USB OTG support
Integrated signaling resistors
Integrated analog comparators for VBUS
monitoring
Integrated USB transceiver
Transaction handshaking performed by hardware
Endpoint buffering anywhere in system RAM
Integrated DMA to access system RAM and Flash
Note:

The implementation and use of the USB
specifications, as well as other third party
specifications or technologies, may
require licensing; including, but not limited
to, USB Implementers Forum, Inc., also
referred to as USB-IF (www.usb.org). The
user is fully responsible for investigating
and satisfying any applicable licensing
obligations.

The clock generator provides the 48 MHz clock
required for USB Full-Speed and Low-Speed communication. The voltage comparators monitor the voltage on
the VBUS pin to determine the state of the bus. The
transceiver provides the analog translation between
the USB bus and the digital logic. The SIE is a state
machine that transfers data to and from the endpoint
buffers and generates the hardware protocol for data
transfers. The USB DMA controller transfers data
between the data buffers in RAM and the SIE. The integrated pull-up and pull-down resistors eliminate the
need for external signaling components. The register
interface allows the CPU to configure and
communicate with the module.

 2011-2018 Microchip Technology Inc.

DS60001168K-page 105

PIC32MX1XX/2XX 28/36/44-PIN FAMILY
FIGURE 10-1:

PIC32MX1XX/2XX 28/36/44-PIN FAMILY FAMILY USB INTERFACE DIAGRAM

FRC
Oscillator
8 MHz Typical
TUN<5:0>(3)
Primary Oscillator
(POSC)

Div x

OSC1

UPLLIDIV

UFIN(4)

(5)

PLL

Div 2
UPLLEN(5)

UFRCEN(2)

OSC2

USB Module

SRP Charge
Bus

SRP Discharge

USB
Voltage
Comparators
48 MHz USB Clock(6)

Full Speed Pull-up
D+(1)

Registers
and
Control
Interface

Host Pull-down

SIE
Transceiver

Low Speed Pull-up

D-(1)
DMA

System
RAM

Host Pull-down

ID Pull-up
ID(1)
VBUSON(1)

Transceiver Power 3.3V

VUSB3V3

Note 1:
2:
3:
4:
5:
6:

Pins can be used as digital input/output when USB is not enabled.
This bit field is contained in the OSCCON register.
This bit field is contained in the OSCTRM register.
USB PLL UFIN requirements: 4 MHz.
This bit field is contained in the DEVCFG2 register.
A 48 MHz clock is required for proper USB operation.

DS60001168K-page 106

 2011-2018 Microchip Technology Inc.

USB Control Registers

Virtual Address
(BF88_#)

Register
Name(1)

TABLE 10-1:

5040

U1OTGIR(2)

5050

U1OTGIE

5060

U1OTGSTAT(3)

5070
5080

U1OTGCON
U1PWRC

U1IR(2)

5210

U1IE

5220

U1EIR(2)

5230

U1EIE

U1STAT(3)

31/15

30/14

29/13

28/12

27/11

26/10

25/9

24/8

31:16

—

—

—

—

—

—

—

—

—

15:0

—
—

—
—

—
—

—
—

—
—

—
—

—
—

—
—

IDIF
—

T1MSECIF LSTATEIF
—
—

ACTVIF
—

SESVDIF SESENDIF
—
—

—
—

VBUSVDIF 0000
—
0000

—
—

—
—

—
—

—
—

—
—

—
—

—
—

—
—

IDIE
—

T1MSECIE LSTATEIE
—
—

ACTVIE
—

SESVDIE SESENDIE
—
—

—
—

VBUSVDIE 0000
—
0000

—
—

—
—

—
—

—
—

—
—

—
—

—
—

—
—

ID
—

—
—

—
—

—
—

—
—

—
—

—
—

—
—

—
—

31:16

—
—

—
—

—
—

—
—

—
—

—
—

—
—

—
—

UACTPND(4)
—

15:0

—

—

—

—

—

—

—

—

STALLIF

31:16

—

—

—

—

—

—

—

—

—

31:16
15:0
31:16
15:0
31:16
15:0
31:16
15:0

23/7

22/6

21/5

—

—

—
—

—
—

19/3

18/2

17/1

—

—

—

SESVD
—

DPPULUP DMPULUP DPPULDWN DMPULDWN VBUSON
—
—
—
—
—

15:0

—

—

—

—

—

—

—

—

STALLIE

31:16

—

—

—

—

—

—

—

—

—

—
—

—
—

—

—

ATTACHIE RESUMEIE
—

—

0000
0000

OTGEN
—

VBUSCHG
—

VBUSDIS
—

0000
0000

USUSPEND USBPWR
—
—

0000
0000

—
—
SOFIF

UERRIF

—

—

—

—

IDLEIE

TRNIE

SOFIE

—

—

—

—

—

—

—

—

—

—

BTSEF

BMXEF

DMAEF

BTOEF

31:16

—

—

—

—

—

—

—

—

—

—

—

—

0000

VBUSVD
—

TRNIF

—

—

—
—

IDLEIF

15:0

16/0

SESEND
—

USLPGRD USBBUSY
—
—

ATTACHIF RESUMEIF

DFN8EF CRC16EF
—

—

UERRIE
—

URSTIF 0000
DETACHIF 0000
—

0000

URSTIE

0000

DETACHIE 0000
—

0000

CRC5EF
EOFEF

PIDEF

0000
0000

—

—

0000

PIDEE

0000

CRC5EE

DS60001168K-page 107

15:0

—

—

—

—

—

—

—

—

BTSEE

BMXEE

DMAEE

BTOEE

31:16

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

0000

15:0
31:16

—
—

—
—

—
—

—
—

—
—

—
—

—
—

—
—

—

ENDPT<3:0>
—
—

—

DIR
—

PPBI
—

—
—

—
—

0000
0000

15:0

—

—

—

—

—

—

—

—

JSTATE

SE0

PKTDIS
TOKBUSY

USBRST

PPBRST

USBEN
SOFEN

0000
0000

—

—

—

—

0000
0000

—

—

—
—

0000
0000

U1CON

5260

U1ADDR

31:16
15:0

—
—

—
—

—
—

—
—

—
—

—
—

—
—

—
—

—
LSPDEN

—

—

5270

U1BDTP1

31:16
15:0

—
—

—
—

—
—

—
—

—
—

—
—

—
—

—
—

—

—

—

2:
3:
4:

—

LSTATE
—

5250

Legend:
Note 1:

20/4

All Resets

Bit Range

Bits

5200

5240

USB REGISTER MAP

DFN8EE CRC16EE

HOSTEN RESUME

—
DEVADDR<6:0>

—
BDTPTRL<15:9>

—

EOFEE

0000

x = unknown value on Reset; — = unimplemented, read as ‘0’. Reset values are shown in hexadecimal.
With the exception of those noted, all registers in this table (except as noted) have corresponding CLR, SET and INV registers at their virtual address, plus an offset of 0x4, 0x8, and 0xC respectively.
See Section 11.2 “CLR, SET and INV Registers” for more information.
This register does not have associated SET and INV registers.
This register does not have associated CLR, SET and INV registers.
Reset value for this bit is undefined.

PIC32MX1XX/2XX 28/36/44-PIN FAMILY

 2011-2018 Microchip Technology Inc.

10.1

Virtual Address
(BF88_#)

Register
Name(1)

Bit Range

USB REGISTER MAP (CONTINUED)

5280

U1FRML(3)

31:16
15:0

—
—

—
—

—
—

—
—

—
—

—
—

—
—

—
—

—

—

—

—
—
FRML<7:0>

—

—

—

0000
0000

5290

U1FRMH(3)

31:16
15:0

—
—

—
—

—
—

—
—

—
—

—
—

—
—

—
—

—
—

—
—

—
—

—
—

—
—

—

—
FRMH<2:0>

—

0000
0000

52A0

U1TOK

31:16

—
—

—
—

—
—

—
—

—
—

—
—

—
—

—
—

—

—

—
PID<3:0>

—

—

—

—
EP<3:0>

—

15:0

0000
0000

52B0

U1SOF

31:16

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

0000

15:0

—
—

—
—

—
—

—
—

—
—

—
—

—
—

—
—

—

—

—

CNT<7:0>
—
—

—

—

—

0000
0000

—
—

—
—

—
—

—
—

—
—

—
—

—
—

—
—

—

—

—

BDTPTRH<7:0>
—
—

—

—

—

0000
0000

—
—

—
—

—
—

—
—

—
—

—
—

—
—

—
—

—

—

—

BDTPTRU<7:0>
—
—

—

—

—

0000
0000

—
—

—
—

—
—

—
—

—
—

—
—

—
—

—
—

UTEYE
—

UOEMON
—

—
—

—
—

—
—

—
—

—
—

—
—

—
—

—
—

—
—

—
—

—
—

LSPD
—

RETRYDIS
—

—
—

EPCONDIS EPRXEN
—
—

EPTXEN
—

EPSTALL
—

EPHSHK
—

0000
0000

—
—

—
—

—
—

—
—

—
—

—
—

—
—

—
—

—
—

—
—

—
—

EPCONDIS EPRXEN
—
—

EPTXEN
—

EPSTALL
—

EPHSHK
—

0000
0000

—
—

—
—

—
—

—
—

—
—

—
—

—
—

—
—

—
—

—
—

—
—

EPCONDIS EPRXEN
—
—

EPTXEN
—

EPSTALL
—

EPHSHK
—

0000
0000

—
—

—
—

—
—

—
—

—
—

—
—

—
—

—
—

—
—

—
—

—
—

EPCONDIS EPRXEN
—
—

EPTXEN
—

EPSTALL
—

EPHSHK
—

0000
0000

—
—

—
—

—
—

—
—

—
—

—
—

—
—

—
—

—
—

—
—

—
—

EPCONDIS EPRXEN
—
—

EPTXEN
—

EPSTALL
—

EPHSHK
—

0000
0000

—
—

—
—

—
—

—
—

—
—

—
—

—
—

—
—

—
—

—
—

—
—

EPCONDIS EPRXEN
—
—

EPTXEN
—

EPSTALL
—

EPHSHK
—

0000
0000

—
—

—
—

—
—

—
—

—
—

—
—

—
—

—
—

—
—

—
—

—
—

EPCONDIS EPRXEN
—
—

EPTXEN
—

EPSTALL
—

EPHSHK
—

0000
0000

—
—

—
—

—
—

—
—

—
—

—
—

—
—

—
—

—
—

—
—

—
—

EPCONDIS EPRXEN
—
—

EPTXEN
—

EPSTALL
—

EPHSHK
—

0000
0000

52C0
52D0
52E0

U1BDTP2
U1BDTP3
U1CNFG1

5300

U1EP0

5310

U1EP1

5320

U1EP2

5330

U1EP3

5340

U1EP4

 2011-2018 Microchip Technology Inc.

5350

U1EP5

5360

U1EP6

5370

U1EP7

5380

U1EP8

Legend:
Note 1:
2:
3:
4:

31:16
15:0
31:16
15:0
31:16
15:0
31:16
15:0
31:16
15:0
31:16
15:0
31:16
15:0
31:16
15:0
31:16
15:0
31:16
15:0
31:16
15:0
31:16

31/15

30/14

29/13

28/12

27/11

26/10

25/9

24/8

23/7

22/6

21/5

20/4

USBSIDL
—

19/3

—
—

18/2

17/1

16/0

All Resets

Bits

UASUSPND 0001
—
0000

15:0
—
—
—
—
—
—
—
—
—
—
—
EPCONDIS EPRXEN EPTXEN EPSTALL
EPHSHK 0000
x = unknown value on Reset; — = unimplemented, read as ‘0’. Reset values are shown in hexadecimal.
With the exception of those noted, all registers in this table (except as noted) have corresponding CLR, SET and INV registers at their virtual address, plus an offset of 0x4, 0x8, and 0xC respectively.
See Section 11.2 “CLR, SET and INV Registers” for more information.
This register does not have associated SET and INV registers.
This register does not have associated CLR, SET and INV registers.
Reset value for this bit is undefined.

PIC32MX1XX/2XX 28/36/44-PIN FAMILY

DS60001168K-page 108

TABLE 10-1:

Virtual Address
(BF88_#)

Register
Name(1)

5390

U1EP9

53A0

U1EP10

53B0

U1EP11

53C0

U1EP12

53D0

U1EP13

53E0

U1EP14

USB REGISTER MAP (CONTINUED)

53F0

U1EP15

Legend:
Note 1:
2:
3:
4:

31/15

30/14

29/13

28/12

27/11

26/10

25/9

24/8

23/7

22/6

21/5

—
—

—
—

—
—

—
—

—
—

—
—

—
—

—
—

—
—

—
—

—
—

—
—

—
—

—
—

—
—

—
—

—
—

—
—

—
—

—
—

—
—

—
—

—
—

—
—

—
—

—
—

—
—

—
—

—
—

—
—

—
—

—
—

—
—

—
—

—
—

—
—

—
—

—
—

15:0

—
—

—
—

—
—

—
—

—
—

—
—

—
—

31:16

—

—

—

—

—

—

15:0
31:16

—
—

—
—

—
—

—
—

—
—

—
—

15:0

—

—

—

—

—

—

31:16
15:0
31:16
15:0
31:16
15:0
31:16
15:0
31:16

20/4

18/2

17/1

16/0

—
—
EPCONDIS EPRXEN

—
EPTXEN

—
EPSTALL

—
EPHSHK

0000
0000

—
—

—
—
EPCONDIS EPRXEN

—
EPTXEN

—
EPSTALL

—
EPHSHK

0000
0000

—
—

—
—

—
—
EPCONDIS EPRXEN

—
EPTXEN

—
EPSTALL

—
EPHSHK

0000
0000

—
—

—
—

—
—

—
—
EPCONDIS EPRXEN

—
EPTXEN

—
EPSTALL

—
EPHSHK

0000
0000

—
—

—
—

—
—

—
—

—
—
EPCONDIS EPRXEN

—
EPTXEN

—
EPSTALL

—
EPHSHK

0000
0000

—

—

—

—

—

—

—

—

0000

—
—

—
—

—
—

—
—

—
—

EPCONDIS EPRXEN
—
—

EPTXEN
—

EPSTALL
—

EPHSHK
—

0000
0000

—

—

—

—

—

EPCONDIS EPRXEN

EPTXEN

EPSTALL

EPHSHK

0000

—

19/3

All Resets

Bit Range

Bits

—

x = unknown value on Reset; — = unimplemented, read as ‘0’. Reset values are shown in hexadecimal.
With the exception of those noted, all registers in this table (except as noted) have corresponding CLR, SET and INV registers at their virtual address, plus an offset of 0x4, 0x8, and 0xC respectively.
See Section 11.2 “CLR, SET and INV Registers” for more information.
This register does not have associated SET and INV registers.
This register does not have associated CLR, SET and INV registers.
Reset value for this bit is undefined.

DS60001168K-page 109

PIC32MX1XX/2XX 28/36/44-PIN FAMILY

 2011-2018 Microchip Technology Inc.

TABLE 10-1:

PIC32MX1XX/2XX 28/36/44-PIN FAMILY
REGISTER 10-1:
Bit
Range
31:24
23:16
15:8
7:0

U1OTGIR: USB OTG INTERRUPT STATUS REGISTER

Bit
31/23/15/7

Bit
30/22/14/6

Bit
29/21/13/5

Bit
28/20/12/4

Bit
27/19/11/3

Bit
26/18/10/2

Bit
25/17/9/1

Bit
24/16/8/0

U-0

U-0

U-0

U-0

U-0

U-0

U-0

U-0

—

—

—

—

—

—

—

—

U-0

U-0

U-0

U-0

U-0

U-0

U-0

U-0

—

—

—

—

—

—

—

—

U-0

U-0

U-0

U-0

U-0

U-0

U-0

U-0

—

—

—

—

—

—

—

—

R/WC-0, HS

R/WC-0, HS

R/WC-0, HS

R/WC-0, HS

R/WC-0, HS

R/WC-0, HS

U-0

R/WC-0, HS

IDIF

T1MSECIF

LSTATEIF

ACTVIF

SESVDIF

SESENDIF

—

VBUSVDIF

Legend:

WC = Write ‘1’ to clear

HS = Hardware Settable bit

R = Readable bit

W = Writable bit

U = Unimplemented bit, read as ‘0’

-n = Value at POR

‘1’ = Bit is set

‘0’ = Bit is cleared

x = Bit is unknown

bit 31-8 Unimplemented: Read as ‘0’
bit 7

IDIF: ID State Change Indicator bit
1 = A change in the ID state was detected
0 = No change in the ID state was detected

bit 6

T1MSECIF: 1 Millisecond Timer bit
1 = 1 millisecond timer has expired
0 = 1 millisecond timer has not expired

bit 5

LSTATEIF: Line State Stable Indicator bit
1 = USB line state has been stable for 1 ms, but different from last time
0 = USB line state has not been stable for 1 ms

bit 4

ACTVIF: Bus Activity Indicator bit
1 = Activity on the D+, D-, ID or VBUS pins has caused the device to wake-up
0 = Activity has not been detected

bit 3

SESVDIF: Session Valid Change Indicator bit
1 = VBUS voltage has dropped below the session end level
0 = VBUS voltage has not dropped below the session end level

bit 2

SESENDIF: B-Device VBUS Change Indicator bit
1 = A change on the session end input was detected
0 = No change on the session end input was detected

bit 1

Unimplemented: Read as ‘0’

bit 0

VBUSVDIF: A-Device VBUS Change Indicator bit
1 = A change on the session valid input was detected
0 = No change on the session valid input was detected

DS60001168K-page 110

 2011-2018 Microchip Technology Inc.

PIC32MX1XX/2XX 28/36/44-PIN FAMILY
REGISTER 10-2:
Bit
Range
31:24
23:16
15:8
7:0

U1OTGIE: USB OTG INTERRUPT ENABLE REGISTER

Bit
31/23/15/7

Bit
30/22/14/6

Bit
29/21/13/5

Bit
28/20/12/4

Bit
27/19/11/3

Bit
26/18/10/2

Bit
25/17/9/1

Bit
24/16/8/0

U-0

U-0

U-0

U-0

U-0

U-0

U-0

U-0

—

—

—

—

—

—

—

—

U-0

U-0

U-0

U-0

U-0

U-0

U-0

U-0

—

—

—

—

—

—

—

—

U-0

U-0

U-0

U-0

U-0

U-0

U-0

U-0

—

—

—

—

—

—

—

—

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

U-0

R/W-0

IDIE

T1MSECIE

LSTATEIE

ACTVIE

SESVDIE

SESENDIE

—

VBUSVDIE

Legend:
R = Readable bit

W = Writable bit

U = Unimplemented bit, read as ‘0’

-n = Value at POR

‘1’ = Bit is set

‘0’ = Bit is cleared

x = Bit is unknown

bit 31-8 Unimplemented: Read as ‘0’
bit 7

IDIE: ID Interrupt Enable bit
1 = ID interrupt is enabled
0 = ID interrupt is disabled

bit 6

T1MSECIE: 1 Millisecond Timer Interrupt Enable bit
1 = 1 millisecond timer interrupt is enabled
0 = 1 millisecond timer interrupt is disabled

bit 5

LSTATEIE: Line State Interrupt Enable bit
1 = Line state interrupt is enabled
0 = Line state interrupt is disabled

bit 4

ACTVIE: Bus Activity Interrupt Enable bit
1 = Activity interrupt is enabled
0 = Activity interrupt is disabled

bit 3

SESVDIE: Session Valid Interrupt Enable bit
1 = Session valid interrupt is enabled
0 = Session valid interrupt is disabled

bit 2

SESENDIE: B-Device Session End Interrupt Enable bit
1 = B-Device session end interrupt is enabled
0 = B-Device session end interrupt is disabled

bit 1

Unimplemented: Read as ‘0’

bit 0

VBUSVDIE: A-Device VBUS Valid Interrupt Enable bit
1 = A-Device VBUS valid interrupt is enabled
0 = A-Device VBUS valid interrupt is disabled

 2011-2018 Microchip Technology Inc.

DS60001168K-page 111

PIC32MX1XX/2XX 28/36/44-PIN FAMILY
REGISTER 10-3:
Bit
Range
31:24
23:16
15:8
7:0

U1OTGSTAT: USB OTG STATUS REGISTER

Bit
31/23/15/7

Bit
30/22/14/6

Bit
29/21/13/5

Bit
28/20/12/4

Bit
27/19/11/3

Bit
26/18/10/2

Bit
25/17/9/1

Bit
24/16/8/0

U-0

U-0

U-0

U-0

U-0

U-0

U-0

U-0

—

—

—

—

—

—

—

—

U-0

U-0

U-0

U-0

U-0

U-0

U-0

U-0

—

—

—

—

—

—

—

—

U-0

U-0

U-0

U-0

U-0

U-0

U-0

U-0

—

—

—

—

—

—

—

—

R-0

U-0

R-0

U-0

R-0

R-0

U-0

R-0

ID

—

LSTATE

—

SESVD

SESEND

—

VBUSVD

Legend:
R = Readable bit

W = Writable bit

U = Unimplemented bit, read as ‘0’

-n = Value at POR

‘1’ = Bit is set

‘0’ = Bit is cleared

x = Bit is unknown

bit 31-8 Unimplemented: Read as ‘0’
bit 7

ID: ID Pin State Indicator bit
1 = No cable is attached or a “type B” cable has been inserted into the USB receptacle
0 = A “type A” OTG cable has been inserted into the USB receptacle

bit 6

Unimplemented: Read as ‘0’

bit 5

LSTATE: Line State Stable Indicator bit
1 = USB line state (SE0 (U1CON<6>) bit and JSTATE (U1CON<7>)) bit has been stable for previous 1 ms
0 = USB line state (SE0 and JSTATE) has not been stable for previous 1 ms

bit 4

Unimplemented: Read as ‘0’

bit 3

SESVD: Session Valid Indicator bit
1 = VBUS voltage is above Session Valid on the A or B device
0 = VBUS voltage is below Session Valid on the A or B device

bit 2

SESEND: B-Device Session End Indicator bit
1 = VBUS voltage is below Session Valid on the B device
0 = VBUS voltage is above Session Valid on the B device

bit 1

Unimplemented: Read as ‘0’

bit 0

VBUSVD: A-Device VBUS Valid Indicator bit
1 = VBUS voltage is above Session Valid on the A device
0 = VBUS voltage is below Session Valid on the A device

DS60001168K-page 112

 2011-2018 Microchip Technology Inc.

PIC32MX1XX/2XX 28/36/44-PIN FAMILY
REGISTER 10-4:
Bit
Range
31:24
23:16
15:8
7:0

U1OTGCON: USB OTG CONTROL REGISTER

Bit
31/23/15/7

Bit
30/22/14/6

Bit
29/21/13/5

Bit
28/20/12/4

Bit
27/19/11/3

Bit
26/18/10/2

Bit
25/17/9/1

Bit
24/16/8/0

U-0

U-0

U-0

U-0

U-0

U-0

U-0

U-0

—

—

—

—

—

—

—

—

U-0

U-0

U-0

U-0

U-0

U-0

U-0

U-0

—

—

—

—

—

—

—

—

U-0

U-0

U-0

U-0

U-0

U-0

U-0

U-0

—

—

—

—

—

—

—

—

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

VBUSON

OTGEN

VBUSCHG

VBUSDIS

DPPULUP DMPULUP DPPULDWN DMPULDWN

Legend:
R = Readable bit

W = Writable bit

U = Unimplemented bit, read as ‘0’

-n = Value at POR

‘1’ = Bit is set

‘0’ = Bit is cleared

x = Bit is unknown

bit 31-8 Unimplemented: Read as ‘0’
bit 7

DPPULUP: D+ Pull-Up Enable bit
1 = D+ data line pull-up resistor is enabled
0 = D+ data line pull-up resistor is disabled

bit 6

DMPULUP: D- Pull-Up Enable bit
1 = D- data line pull-up resistor is enabled
0 = D- data line pull-up resistor is disabled

bit 5

DPPULDWN: D+ Pull-Down Enable bit
1 = D+ data line pull-down resistor is enabled
0 = D+ data line pull-down resistor is disabled

bit 4

DMPULDWN: D- Pull-Down Enable bit
1 = D- data line pull-down resistor is enabled
0 = D- data line pull-down resistor is disabled

bit 3

VBUSON: VBUS Power-on bit
1 = VBUS line is powered
0 = VBUS line is not powered

bit 2

OTGEN: OTG Functionality Enable bit
1 = DPPULUP, DMPULUP, DPPULDWN and DMPULDWN bits are under software control
0 = DPPULUP, DMPULUP, DPPULDWN and DMPULDWN bits are under USB hardware control

bit 1

VBUSCHG: VBUS Charge Enable bit
1 = VBUS line is charged through a pull-up resistor
0 = VBUS line is not charged through a resistor

bit 0

VBUSDIS: VBUS Discharge Enable bit
1 = VBUS line is discharged through a pull-down resistor
0 = VBUS line is not discharged through a resistor

 2011-2018 Microchip Technology Inc.

DS60001168K-page 113

PIC32MX1XX/2XX 28/36/44-PIN FAMILY
REGISTER 10-5:
Bit
Bit
Range 31/23/15/7
31:24
23:16
15:8
7:0

U-0

U1PWRC: USB POWER CONTROL REGISTER
Bit
30/22/14/6

Bit
29/21/13/5

Bit
28/20/12/4

Bit
27/19/11/3

Bit
26/18/10/2

Bit
25/17/9/1

Bit
24/16/8/0

U-0

U-0

U-0

U-0

U-0

U-0

U-0

—

—

—

—

—

—

—

—

U-0

U-0

U-0

U-0

U-0

U-0

U-0

U-0

—

—

—

—

—

—

—

—

U-0

U-0

U-0

U-0

U-0

U-0

U-0

U-0

—

—

—

—

—

—

—

—

R-0

U-0

U-0

R/W-0

R/W-0

U-0

R/W-0

R/W-0

UACTPND

—

—

USLPGRD USBBUSY(1)

—

USUSPEND USBPWR

Legend:
R = Readable bit

W = Writable bit

U = Unimplemented bit, read as ‘0’

-n = Value at POR

‘1’ = Bit is set

‘0’ = Bit is cleared

x = Bit is unknown

bit 31-8 Unimplemented: Read as ‘0’
bit 7

UACTPND: USB Activity Pending bit
1 = USB bus activity has been detected; however, an interrupt is pending, which has yet to be generated
0 = An interrupt is not pending

bit 6-5

Unimplemented: Read as ‘0’

bit 4

USLPGRD: USB Sleep Entry Guard bit
1 = Sleep entry is blocked if USB bus activity is detected or if a notification is pending
0 = USB module does not block Sleep entry

bit 3

USBBUSY: USB Module Busy bit(1)
1 = USB module is active or disabled, but not ready to be enabled
0 = USB module is not active and is ready to be enabled

bit 2

Unimplemented: Read as ‘0’

bit 1

USUSPEND: USB Suspend Mode bit
1 = USB module is placed in Suspend mode
(The 48 MHz USB clock will be gated off. The transceiver is placed in a low-power state.)
0 = USB module operates normally

bit 0

USBPWR: USB Operation Enable bit
1 = USB module is turned on
0 = USB module is disabled
(Outputs held inactive, device pins not used by USB, analog features are shut down to reduce power
consumption.)

Note 1:

When USBPWR = 0 and USBBUSY = 1, status from all other registers is invalid and writes to all USB
module registers produce undefined results.

DS60001168K-page 114

 2011-2018 Microchip Technology Inc.

PIC32MX1XX/2XX 28/36/44-PIN FAMILY
REGISTER 10-6:
Bit
Bit
Range 31/23/15/7
31:24
23:16
15:8
7:0

U1IR: USB INTERRUPT REGISTER
Bit
30/22/14/6

Bit
29/21/13/5

Bit
Bit
Bit
28/20/12/4 27/19/11/3 26/18/10/2

U-0

U-0

U-0

U-0

U-0

—

—

—

—

—

U-0

U-0

U-0

U-0

U-0

Bit
25/17/9/1

Bit
24/16/8/0

U-0

U-0

U-0

—

—

—

U-0

U-0

U-0

—

—

—

—

—

—

—

—

U-0

U-0

U-0

U-0

U-0

U-0

U-0

U-0

—

—

—

—

—

—

—

—

R/WC-0, HS

R/WC-0, HS

R/WC-0, HS

R/WC-0, HS

R/WC-0, HS

R/WC-0, HS

R-0

IDLEIF

TRNIF(3)

SOFIF

UERRIF(4)

R/WC-0, HS
(5)

STALLIF

ATTACHIF(1) RESUMEIF(2)

Legend:
R = Readable bit
-n = Value at POR

WC = Write ‘1’ to clear
W = Writable bit
‘1’ = Bit is set

URSTIF
DETACHIF(6)

HS = Hardware Settable bit
U = Unimplemented bit, read as ‘0’
‘0’ = Bit is cleared
x = Bit is unknown

bit 31-8 Unimplemented: Read as ‘0’
bit 7
STALLIF: STALL Handshake Interrupt bit
1 = In Host mode a STALL handshake was received during the handshake phase of the transaction
In Device mode a STALL handshake was transmitted during the handshake phase of the transaction
0 = STALL handshake has not been sent
bit 6
ATTACHIF: Peripheral Attach Interrupt bit(1)
1 = Peripheral attachment was detected by the USB module
0 = Peripheral attachment was not detected
bit 5
RESUMEIF: Resume Interrupt bit(2)
1 = K-State is observed on the D+ or D- pin for 2.5 µs
0 = K-State is not observed
bit 4
IDLEIF: Idle Detect Interrupt bit
1 = Idle condition detected (constant Idle state of 3 ms or more)
0 = No Idle condition detected
bit 3
TRNIF: Token Processing Complete Interrupt bit(3)
1 = Processing of current token is complete; a read of the U1STAT register will provide endpoint information
0 = Processing of current token not complete
bit 2
SOFIF: SOF Token Interrupt bit
1 = SOF token received by the peripheral or the SOF threshold reached by the host
0 = SOF token was not received nor threshold reached
bit 1
UERRIF: USB Error Condition Interrupt bit(4)
1 = Unmasked error condition has occurred
0 = Unmasked error condition has not occurred
bit 0
URSTIF: USB Reset Interrupt bit (Device mode)(5)
1 = Valid USB Reset has occurred
0 = No USB Reset has occurred
DETACHIF: USB Detach Interrupt bit (Host mode)(6)
1 = Peripheral detachment was detected by the USB module
0 = Peripheral detachment was not detected
Note 1:
2:
3:
4:
5:
6:

This bit is valid only if the HOSTEN bit is set (see Register 10-11), there is no activity on the USB for
2.5 µs, and the current bus state is not SE0.
When not in Suspend mode, this interrupt should be disabled.
Clearing this bit will cause the STAT FIFO to advance.
Only error conditions enabled through the U1EIE register will set this bit.
Device mode.
Host mode.

 2011-2018 Microchip Technology Inc.

DS60001168K-page 115

PIC32MX1XX/2XX 28/36/44-PIN FAMILY
REGISTER 10-7:
Bit
Range
31:24
23:16
15:8

7:0

U1IE: USB INTERRUPT ENABLE REGISTER

Bit
31/23/15/7

Bit
30/22/14/6

Bit
29/21/13/5

Bit
28/20/12/4

Bit
27/19/11/3

Bit
26/18/10/2

Bit
25/17/9/1

Bit
24/16/8/0

U-0

U-0

U-0

U-0

U-0

U-0

U-0

U-0

—

—

—

—

—

—

—

—

U-0

U-0

U-0

U-0

U-0

U-0

U-0

U-0

—

—

—

—

—

—

—

—

U-0

U-0

U-0

U-0

U-0

U-0

U-0

U-0

—

—

—

—

—

—

—

—

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

STALLIE

ATTACHIE RESUMEIE

IDLEIE

TRNIE

SOFIE

R/W-0

(1)

UERRIE

URSTIE(2)
DETACHIE(3)

Legend:
R = Readable bit

W = Writable bit

U = Unimplemented bit, read as ‘0’

-n = Value at POR

‘1’ = Bit is set

‘0’ = Bit is cleared

x = Bit is unknown

bit 31-8 Unimplemented: Read as ‘0’
bit 7

STALLIE: STALL Handshake Interrupt Enable bit
1 = STALL interrupt is enabled
0 = STALL interrupt is disabled

bit 6

ATTACHIE: ATTACH Interrupt Enable bit
1 = ATTACH interrupt is enabled
0 = ATTACH interrupt is disabled

bit 5

RESUMEIE: RESUME Interrupt Enable bit
1 = RESUME interrupt is enabled
0 = RESUME interrupt is disabled

bit 4

IDLEIE: Idle Detect Interrupt Enable bit
1 = Idle interrupt is enabled
0 = Idle interrupt is disabled

bit 3

TRNIE: Token Processing Complete Interrupt Enable bit
1 = TRNIF interrupt is enabled
0 = TRNIF interrupt is disabled

bit 2

SOFIE: SOF Token Interrupt Enable bit
1 = SOFIF interrupt is enabled
0 = SOFIF interrupt is disabled

bit 1

UERRIE: USB Error Interrupt Enable bit(1)
1 = USB Error interrupt is enabled
0 = USB Error interrupt is disabled

bit 0

URSTIE: USB Reset Interrupt Enable bit(2)
1 = URSTIF interrupt is enabled
0 = URSTIF interrupt is disabled
DETACHIE: USB Detach Interrupt Enable bit(3)
1 = DATTCHIF interrupt is enabled
0 = DATTCHIF interrupt is disabled

Note 1:
2:
3:

For an interrupt to propagate USBIF, the UERRIE (U1IE<1>) bit must be set.
Device mode.
Host mode.

DS60001168K-page 116

 2011-2018 Microchip Technology Inc.

PIC32MX1XX/2XX 28/36/44-PIN FAMILY
REGISTER 10-8:
Bit
Range
31:24
23:16
15:8

7:0

U1EIR: USB ERROR INTERRUPT STATUS REGISTER

Bit
31/23/15/7

Bit
30/22/14/6

Bit
29/21/13/5

Bit
28/20/12/4

Bit
27/19/11/3

Bit
26/18/10/2

Bit
25/17/9/1

Bit
24/16/8/0

U-0

U-0

U-0

U-0

U-0

U-0

U-0

U-0

—

—

—

—

—

—

—

—

U-0

U-0

U-0

U-0

U-0

U-0

U-0

U-0

—

—

—

—

—

—

—

—

U-0

U-0

U-0

U-0

U-0

U-0

U-0

U-0

—

—

—

—

—

—

—

—

R/WC-0, HS

R/WC-0, HS

R/WC-0, HS

R/WC-0, HS

R/WC-0, HS

R/WC-0, HS

R/WC-0, HS

R/WC-0, HS

BTSEF

BMXEF

DMAEF(1)

BTOEF(2)

DFN8EF

CRC16EF

CRC5EF(4)
EOFEF(3,5)

Legend:

WC = Write ‘1’ to clear

HS = Hardware Settable bit

R = Readable bit

W = Writable bit

U = Unimplemented bit, read as ‘0’

-n = Value at POR

‘1’ = Bit is set

‘0’ = Bit is cleared

PIDEF

x = Bit is unknown

bit 31-8 Unimplemented: Read as ‘0’
bit 7

BTSEF: Bit Stuff Error Flag bit
1 = Packet rejected due to bit stuff error
0 = Packet accepted

bit 6

BMXEF: Bus Matrix Error Flag bit
1 = The base address, of the Buffer Descriptor Table, or the address of an individual buffer pointed to by a
Buffer Descriptor Table entry, is invalid.
0 = No address error

bit 5

DMAEF: DMA Error Flag bit(1)
1 = USB DMA error condition detected
0 = No DMA error

bit 4

BTOEF: Bus Turnaround Time-Out Error Flag bit(2)
1 = Bus turnaround time-out has occurred
0 = No bus turnaround time-out

bit 3

DFN8EF: Data Field Size Error Flag bit
1 = Data field received is not an integral number of bytes
0 = Data field received is an integral number of bytes

bit 2

CRC16EF: CRC16 Failure Flag bit
1 = Data packet rejected due to CRC16 error
0 = Data packet accepted

Note 1:

2:
3:
4:
5:

This type of error occurs when the module’s request for the DMA bus is not granted in time to service the
module’s demand for memory, resulting in an overflow or underflow condition, and/or the allocated buffer
size is not sufficient to store the received data packet causing it to be truncated.
This type of error occurs when more than 16-bit-times of Idle from the previous End-of-Packet (EOP)
has elapsed.
This type of error occurs when the module is transmitting or receiving data and the SOF counter has
reached zero.
Device mode.
Host mode.

 2011-2018 Microchip Technology Inc.

DS60001168K-page 117

PIC32MX1XX/2XX 28/36/44-PIN FAMILY
REGISTER 10-8:

U1EIR: USB ERROR INTERRUPT STATUS REGISTER (CONTINUED)

bit 1

CRC5EF: CRC5 Host Error Flag bit(4)
1 = Token packet rejected due to CRC5 error
0 = Token packet accepted
EOFEF: EOF Error Flag bit(3,5)
1 = An EOF error condition was detected
0 = No EOF error condition was detected

bit 0

PIDEF: PID Check Failure Flag bit
1 = PID check failed
0 = PID check passed

Note 1:

2:
3:
4:
5:

This type of error occurs when the module’s request for the DMA bus is not granted in time to service the
module’s demand for memory, resulting in an overflow or underflow condition, and/or the allocated buffer
size is not sufficient to store the received data packet causing it to be truncated.
This type of error occurs when more than 16-bit-times of Idle from the previous End-of-Packet (EOP)
has elapsed.
This type of error occurs when the module is transmitting or receiving data and the SOF counter has
reached zero.
Device mode.
Host mode.

DS60001168K-page 118

 2011-2018 Microchip Technology Inc.

PIC32MX1XX/2XX 28/36/44-PIN FAMILY
REGISTER 10-9:
Bit
Range
31:24
23:16
15:8
7:0

U1EIE: USB ERROR INTERRUPT ENABLE REGISTER

Bit
31/23/15/7

Bit
30/22/14/6

Bit
29/21/13/5

Bit
28/20/12/4

Bit
27/19/11/3

Bit
26/18/10/2

Bit
25/17/9/1

Bit
24/16/8/0

U-0

U-0

U-0

U-0

U-0

U-0

U-0

U-0

—

—

—

—

—

—

—

—

U-0

U-0

U-0

U-0

U-0

U-0

U-0

U-0

—

—

—

—

—

—

—

—

U-0

U-0

U-0

U-0

U-0

U-0

U-0

U-0

—

—

—

—

—

—

—

—

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

BTSEE

BMXEE

DMAEE

BTOEE

DFN8EE

CRC16EE

CRC5EE(1)
EOFEE(2)

Legend:
R = Readable bit

W = Writable bit

U = Unimplemented bit, read as ‘0’

-n = Value at POR

‘1’ = Bit is set

‘0’ = Bit is cleared

PIDEE

x = Bit is unknown

bit 31-8 Unimplemented: Read as ‘0’
bit 7
BTSEE: Bit Stuff Error Interrupt Enable bit
1 = BTSEF interrupt is enabled
0 = BTSEF interrupt is disabled
bit 6

bit 5

bit 4

bit 3

bit 2

bit 1

bit 0

Note 1:
2:
Note:

BMXEE: Bus Matrix Error Interrupt Enable bit
1 = BMXEF interrupt is enabled
0 = BMXEF interrupt is disabled
DMAEE: DMA Error Interrupt Enable bit
1 = DMAEF interrupt is enabled
0 = DMAEF interrupt is disabled
BTOEE: Bus Turnaround Time-out Error Interrupt Enable bit
1 = BTOEF interrupt is enabled
0 = BTOEF interrupt is disabled
DFN8EE: Data Field Size Error Interrupt Enable bit
1 = DFN8EF interrupt is enabled
0 = DFN8EF interrupt is disabled
CRC16EE: CRC16 Failure Interrupt Enable bit
1 = CRC16EF interrupt is enabled
0 = CRC16EF interrupt is disabled
CRC5EE: CRC5 Host Error Interrupt Enable bit(1)
1 = CRC5EF interrupt is enabled
0 = CRC5EF interrupt is disabled
EOFEE: EOF Error Interrupt Enable bit(2)
1 = EOF interrupt is enabled
0 = EOF interrupt is disabled
PIDEE: PID Check Failure Interrupt Enable bit
1 = PIDEF interrupt is enabled
0 = PIDEF interrupt is disabled
Device mode.
Host mode.
For an interrupt to propagate the USBIF register, the UERRIE (U1IE<1>) bit must be set.

 2011-2018 Microchip Technology Inc.

DS60001168K-page 119

PIC32MX1XX/2XX 28/36/44-PIN FAMILY
REGISTER 10-10: U1STAT: USB STATUS REGISTER
Bit
Range
31:24
23:16
15:8
7:0

Bit
31/23/15/7

Bit
30/22/14/6

Bit
29/21/13/5

Bit
28/20/12/4

Bit
27/19/11/3

Bit
26/18/10/2

Bit
25/17/9/1

Bit
24/16/8/0

U-0

U-0

U-0

U-0

U-0

U-0

U-0

U-0

—

—

—

—

—

—

—

—

U-0

U-0

U-0

U-0

U-0

U-0

U-0

U-0

—

—

—

—

—

—

—

—

U-0

U-0

U-0

U-0

U-0

U-0

U-0

U-0

—

—

—

—

—

—

—

—

R-x

R-x

R-x

R-x

R-x

R-x

U-0

U-0

DIR

PPBI

—

—

ENDPT<3:0>

Legend:
R = Readable bit

W = Writable bit

U = Unimplemented bit, read as ‘0’

-n = Value at POR

‘1’ = Bit is set

‘0’ = Bit is cleared

x = Bit is unknown

bit 31-8 Unimplemented: Read as ‘0’
bit 7-4

ENDPT<3:0>: Encoded Number of Last Endpoint Activity bits
(Represents the number of the Buffer Descriptor Table, updated by the last USB transfer.)
1111 = Endpoint 15
1110 = Endpoint 14
•
•
•

0001 = Endpoint 1
0000 = Endpoint 0
bit 3

DIR: Last Buffer Descriptor Direction Indicator bit
1 = Last transaction was a transmit (TX) transfer
0 = Last transaction was a receive (RX) transfer

bit 2

PPBI: Ping-Pong Buffer Descriptor Pointer Indicator bit
1 = The last transaction was to the ODD Buffer Descriptor bank
0 = The last transaction was to the EVEN Buffer Descriptor bank

bit 1-0

Unimplemented: Read as ‘0’

Note:

The U1STAT register is a window into a 4-byte FIFO maintained by the USB module. U1STAT value is only
valid when the TRNIF (U1IR<3>) bit is active. Clearing the TRNIF bit advances the FIFO. Data in register
is invalid when the TRNIF bit = 0.

DS60001168K-page 120

 2011-2018 Microchip Technology Inc.

PIC32MX1XX/2XX 28/36/44-PIN FAMILY
REGISTER 10-11: U1CON: USB CONTROL REGISTER
Bit
Bit
Bit
Range 31/23/15/7 30/22/14/6
31:24
23:16
15:8

7:0

U-0

Bit
29/21/13/5

Bit
28/20/12/4

Bit
27/19/11/3

Bit
26/18/10/2

Bit
25/17/9/1

Bit
24/16/8/0

U-0

U-0

U-0

U-0

U-0

U-0

U-0

—

—

—

—

—

—

—

—

U-0

U-0

U-0

U-0

U-0

U-0

U-0

U-0

—

—

—

—

—

—

—

—

U-0

U-0

U-0

U-0

U-0

U-0

U-0

U-0

—

—

—

—

—

—

—

—

R-x

R-x

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

JSTATE

SE0

PKTDIS(4)
TOKBUSY(1,5)

USBRST

HOSTEN(2) RESUME(3)

PPBRST

USBEN(4)
SOFEN(5)

Legend:
R = Readable bit

W = Writable bit

U = Unimplemented bit, read as ‘0’

-n = Value at POR

‘1’ = Bit is set

‘0’ = Bit is cleared

x = Bit is unknown

bit 31-8 Unimplemented: Read as ‘0’
bit 7

JSTATE: Live Differential Receiver JSTATE flag bit
1 = JSTATE was detected on the USB
0 = No JSTATE was detected

bit 6

SE0: Live Single-Ended Zero flag bit
1 = Single-Ended Zero was detected on the USB
0 = No Single-Ended Zero was detected

bit 5

PKTDIS: Packet Transfer Disable bit(4)
1 = Token and packet processing is disabled (set upon SETUP token received)
0 = Token and packet processing is enabled
TOKBUSY: Token Busy Indicator bit(1,5)
1 = Token is being executed by the USB module
0 = No token is being executed

bit 4

USBRST: Module Reset bit(5)
1 = USB reset generated
0 = USB reset terminated

bit 3

HOSTEN: Host Mode Enable bit(2)
1 = USB host capability is enabled
0 = USB host capability is disabled

bit 2

RESUME: RESUME Signaling Enable bit(3)
1 = RESUME signaling is activated
0 = RESUME signaling is disabled

Note 1:
2:
3:

4:
5:

Software is required to check this bit before issuing another token command to the U1TOK register (see
Register 10-15).
All host control logic is reset any time that the value of this bit is toggled.
Software must set RESUME for 10 ms if the part is a function, or for 25 ms if the part is a host, and then
clear it to enable remote wake-up. In Host mode, the USB module will append a Low-Speed EOP to the
RESUME signaling when this bit is cleared.
Device mode.
Host mode.

 2011-2018 Microchip Technology Inc.

DS60001168K-page 121

PIC32MX1XX/2XX 28/36/44-PIN FAMILY
REGISTER 10-11: U1CON: USB CONTROL REGISTER (CONTINUED)
bit 1

PPBRST: Ping-Pong Buffers Reset bit
1 = Reset all Even/Odd buffer pointers to the EVEN Buffer Descriptor banks
0 = Even/Odd buffer pointers are not Reset

bit 0

USBEN: USB Module Enable bit(4)
1 = USB module and supporting circuitry is enabled
0 = USB module and supporting circuitry is disabled
SOFEN: SOF Enable bit(5)
1 = SOF token is sent every 1 ms
0 = SOF token is disabled

Note 1:
2:
3:

4:
5:

Software is required to check this bit before issuing another token command to the U1TOK register (see
Register 10-15).
All host control logic is reset any time that the value of this bit is toggled.
Software must set RESUME for 10 ms if the part is a function, or for 25 ms if the part is a host, and then
clear it to enable remote wake-up. In Host mode, the USB module will append a Low-Speed EOP to the
RESUME signaling when this bit is cleared.
Device mode.
Host mode.

DS60001168K-page 122

 2011-2018 Microchip Technology Inc.

PIC32MX1XX/2XX 28/36/44-PIN FAMILY
REGISTER 10-12: U1ADDR: USB ADDRESS REGISTER
Bit
Range
31:24
23:16
15:8
7:0

Bit
31/23/15/7

Bit
30/22/14/6

Bit
29/21/13/5

Bit
28/20/12/4

Bit
27/19/11/3

Bit
26/18/10/2

Bit
25/17/9/1

Bit
24/16/8/0

U-0

U-0

U-0

U-0

U-0

U-0

U-0

U-0

—

—

—

—

—

—

—

—

U-0

U-0

U-0

U-0

U-0

U-0

U-0

U-0

—

—

—

—

—

—

—

—

U-0

U-0

U-0

U-0

U-0

U-0

U-0

U-0

—

—

—

—

—

—

—

—

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

LSPDEN

DEVADDR<6:0>

Legend:
R = Readable bit

W = Writable bit

U = Unimplemented bit, read as ‘0’

-n = Value at POR

‘1’ = Bit is set

‘0’ = Bit is cleared

x = Bit is unknown

bit 31-8 Unimplemented: Read as ‘0’
bit 7

LSPDEN: Low-Speed Enable Indicator bit
1 = Next token command to be executed at Low-Speed
0 = Next token command to be executed at Full-Speed

bit 6-0

DEVADDR<6:0>: 7-bit USB Device Address bits

REGISTER 10-13: U1FRML: USB FRAME NUMBER LOW REGISTER
Bit
Range
31:24
23:16
15:8
7:0

Bit
31/23/15/7

Bit
30/22/14/6

Bit
29/21/13/5

Bit
28/20/12/4

Bit
27/19/11/3

Bit
26/18/10/2

Bit
25/17/9/1

Bit
24/16/8/0

U-0

U-0

U-0

U-0

U-0

U-0

U-0

U-0

—

—

—

—

—

—

—

—

U-0

U-0

U-0

U-0

U-0

U-0

U-0

U-0

—

—

—

—

—

—

—

—

U-0

U-0

U-0

U-0

U-0

U-0

U-0

U-0

—

—

—

—

—

—

—

—

R-0

R-0

R-0

R-0

R-0

R-0

R-0

R-0

FRML<7:0>

Legend:
R = Readable bit

W = Writable bit

U = Unimplemented bit, read as ‘0’

-n = Value at POR

‘1’ = Bit is set

‘0’ = Bit is cleared

x = Bit is unknown

bit 31-8 Unimplemented: Read as ‘0’
bit 7-0

FRML<7:0>: The 11-bit Frame Number Lower bits
The register bits are updated with the current frame number whenever a SOF TOKEN is received.

 2011-2018 Microchip Technology Inc.

DS60001168K-page 123

PIC32MX1XX/2XX 28/36/44-PIN FAMILY
REGISTER 10-14: U1FRMH: USB FRAME NUMBER HIGH REGISTER
Bit
Range
31:24
23:16
15:8
7:0

Bit
31/23/15/7

Bit
30/22/14/6

Bit
29/21/13/5

Bit
28/20/12/4

Bit
27/19/11/3

Bit
26/18/10/2

Bit
25/17/9/1

Bit
24/16/8/0

U-0

U-0

U-0

U-0

U-0

U-0

U-0

U-0

—

—

—

—

—

—

—

—

U-0

U-0

U-0

U-0

U-0

U-0

U-0

U-0

—

—

—

—

—

—

—

—

U-0

U-0

U-0

U-0

U-0

U-0

U-0

U-0

—

—

—

—

—

—

—

—

U-0

U-0

U-0

U-0

U-0

R-0

R-0

R-0

—

—

—

—

—

FRMH<2:0>

Legend:
R = Readable bit

W = Writable bit

U = Unimplemented bit, read as ‘0’

-n = Value at POR

‘1’ = Bit is set

‘0’ = Bit is cleared

x = Bit is unknown

bit 31-3 Unimplemented: Read as ‘0’
bit 2-0

FRMH<2:0>: The Upper 3 bits of the Frame Numbers bits
The register bits are updated with the current frame number whenever a SOF TOKEN is received.

REGISTER 10-15: U1TOK: USB TOKEN REGISTER
Bit
Range
31:24
23:16
15:8
7:0

Bit
31/23/15/7

Bit
30/22/14/6

Bit
29/21/13/5

Bit
28/20/12/4

Bit
27/19/11/3

Bit
26/18/10/2

Bit
25/17/9/1

Bit
24/16/8/0

U-0

U-0

U-0

U-0

U-0

U-0

U-0

U-0

—

—

—

—

—

—

—

—

U-0

U-0

U-0

U-0

U-0

U-0

U-0

U-0

—

—

—

—

—

—

—

—

U-0

U-0

U-0

U-0

U-0

U-0

U-0

U-0

—

—

—

—

—

—

—

—

R/W-0

R/W-0

R/W-0
(1)

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

PID<3:0>

EP<3:0>

Legend:
R = Readable bit

W = Writable bit

U = Unimplemented bit, read as ‘0’

-n = Value at POR

‘1’ = Bit is set

‘0’ = Bit is cleared

x = Bit is unknown

bit 31-8 Unimplemented: Read as ‘0’
bit 7-4

PID<3:0>: Token Type Indicator bits(1)
1101 = SETUP (TX) token type transaction
1001 = IN (RX) token type transaction
0001 = OUT (TX) token type transaction
Note: All other values are reserved and must not be used.

bit 3-0

EP<3:0>: Token Command Endpoint Address bits
The four bit value must specify a valid endpoint.

Note 1:

All other values are reserved and must not be used.

DS60001168K-page 124

 2011-2018 Microchip Technology Inc.

PIC32MX1XX/2XX 28/36/44-PIN FAMILY
REGISTER 10-16: U1SOF: USB SOF THRESHOLD REGISTER
Bit
Range
31:24
23:16
15:8
7:0

Bit
31/23/15/7

Bit
30/22/14/6

Bit
29/21/13/5

Bit
28/20/12/4

Bit
27/19/11/3

Bit
26/18/10/2

Bit
25/17/9/1

Bit
24/16/8/0

U-0

U-0

U-0

U-0

U-0

U-0

U-0

U-0

—

—

—

—

—

—

—

—

U-0

U-0

U-0

U-0

U-0

U-0

U-0

U-0

—

—

—

—

—

—

—

—

U-0

U-0

U-0

U-0

U-0

U-0

U-0

U-0

—

—

—

—

—

—

—

—

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

CNT<7:0>

Legend:
R = Readable bit

W = Writable bit

U = Unimplemented bit, read as ‘0’

-n = Value at POR

‘1’ = Bit is set

‘0’ = Bit is cleared

x = Bit is unknown

bit 31-8 Unimplemented: Read as ‘0’
bit 7-0

CNT<7:0>: SOF Threshold Value bits
Typical values of the threshold are:
01001010 = 64-byte packet
00101010 = 32-byte packet
00011010 = 16-byte packet
00010010 = 8-byte packet

REGISTER 10-17: U1BDTP1: USB BUFFER DESCRIPTOR TABLE PAGE 1 REGISTER
Bit
Range
31:24
23:16
15:8
7:0

Bit
31/23/15/7

Bit
30/22/14/6

Bit
29/21/13/5

Bit
28/20/12/4

Bit
27/19/11/3

Bit
26/18/10/2

Bit
25/17/9/1

Bit
24/16/8/0

U-0

U-0

U-0

U-0

U-0

U-0

U-0

U-0

—

—

—

—

—

—

—

—

U-0

U-0

U-0

U-0

U-0

U-0

U-0

U-0

—

—

—

—

—

—

—

—

U-0

U-0

U-0

U-0

U-0

U-0

U-0

U-0

—

—

—

—

—

—

—

—

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

U-0

BDTPTRL<15:9>

—

Legend:
R = Readable bit

W = Writable bit

U = Unimplemented bit, read as ‘0’

-n = Value at POR

‘1’ = Bit is set

‘0’ = Bit is cleared

x = Bit is unknown

bit 31-8 Unimplemented: Read as ‘0’
bit 7-1

BDTPTRL<15:9>: Buffer Descriptor Table Base Address bits
This 7-bit value provides address bits 15 through 9 of the Buffer Descriptor Table base address, which
defines the starting location of the Buffer Descriptor Table in system memory.
The 32-bit Buffer Descriptor Table base address is 512-byte aligned.

bit 0

Unimplemented: Read as ‘0’

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REGISTER 10-18: U1BDTP2: USB BUFFER DESCRIPTOR TABLE PAGE 2 REGISTER
Bit
Range
31:24
23:16
15:8
7:0

Bit
31/23/15/7

Bit
30/22/14/6

Bit
29/21/13/5

Bit
28/20/12/4

Bit
27/19/11/3

Bit
26/18/10/2

Bit
25/17/9/1

Bit
24/16/8/0

U-0

U-0

U-0

U-0

U-0

U-0

U-0

U-0

—

—

—

—

—

—

—

—

U-0

U-0

U-0

U-0

U-0

U-0

U-0

U-0

—

—

—

—

—

—

—

—

U-0

U-0

U-0

U-0

U-0

U-0

U-0

U-0

—

—

—

—

—

—

—

—

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

BDTPTRH<23:16>

Legend:
R = Readable bit

W = Writable bit

U = Unimplemented bit, read as ‘0’

-n = Value at POR

‘1’ = Bit is set

‘0’ = Bit is cleared

x = Bit is unknown

bit 31-8 Unimplemented: Read as ‘0’
bit 7-0

BDTPTRH<23:16>: Buffer Descriptor Table Base Address bits
This 8-bit value provides address bits 23 through 16 of the Buffer Descriptor Table base address, which
defines the starting location of the Buffer Descriptor Table in system memory.
The 32-bit Buffer Descriptor Table base address is 512-byte aligned.

REGISTER 10-19: U1BDTP3: USB BUFFER DESCRIPTOR TABLE PAGE 3 REGISTER
Bit
Range
31:24
23:16
15:8
7:0

Bit
31/23/15/7

Bit
30/22/14/6

Bit
29/21/13/5

Bit
28/20/12/4

Bit
27/19/11/3

Bit
26/18/10/2

Bit
25/17/9/1

Bit
24/16/8/0

U-0

U-0

U-0

U-0

U-0

U-0

U-0

U-0

—

—

—

—

—

—

—

—

U-0

U-0

U-0

U-0

U-0

U-0

U-0

U-0

—

—

—

—

—

—

—

—

U-0

U-0

U-0

U-0

U-0

U-0

U-0

U-0

—

—

—

—

—

—

—

—

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

BDTPTRU<31:24>

Legend:
R = Readable bit

W = Writable bit

U = Unimplemented bit, read as ‘0’

-n = Value at POR

‘1’ = Bit is set

‘0’ = Bit is cleared

x = Bit is unknown

bit 31-8

Unimplemented: Read as ‘0’

bit 7-0

BDTPTRU<31:24>: Buffer Descriptor Table Base Address bits
This 8-bit value provides address bits 31 through 24 of the Buffer Descriptor Table base address, defines the
starting location of the Buffer Descriptor Table in system memory.
The 32-bit Buffer Descriptor Table base address is 512-byte aligned.

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REGISTER 10-20: U1CNFG1: USB CONFIGURATION 1 REGISTER
Bit
Range
31:24
23:16
15:8
7:0

Bit
31/23/15/7

Bit
30/22/14/6

Bit
29/21/13/5

Bit
28/20/12/4

Bit
27/19/11/3

Bit
26/18/10/2

Bit
25/17/9/1

Bit
24/16/8/0

U-0

U-0

U-0

U-0

U-0

U-0

U-0

U-0

—

—

—

—

—

—

—

—

U-0

U-0

U-0

U-0

U-0

U-0

U-0

U-0

—

—

—

—

—

—

—

—

U-0

U-0

U-0

U-0

U-0

U-0

U-0

U-0

—

—

—

—

—

—

—

—

R/W-0

R/W-0

U-0

R/W-0

U-0

U-0

U-0

R/W-0

UTEYE

UOEMON

—

USBSIDL

—

—

—

UASUSPND

Legend:
R = Readable bit

W = Writable bit

U = Unimplemented bit, read as ‘0’

-n = Value at POR

‘1’ = Bit is set

‘0’ = Bit is cleared

x = Bit is unknown

bit 31-8

Unimplemented: Read as ‘0’

bit 7

UTEYE: USB Eye-Pattern Test Enable bit
1 = Eye-Pattern Test is enabled
0 = Eye-Pattern Test is disabled

bit 6

UOEMON: USB OE Monitor Enable bit
1 = OE signal is active; it indicates intervals during which the D+/D- lines are driving
0 = OE signal is inactive

bit 5

Unimplemented: Read as ‘0’

bit 4

USBSIDL: Stop in Idle Mode bit
1 = Discontinue module operation when the device enters Idle mode
0 = Continue module operation when the device enters Idle mode

bit 3-1

Unimplemented: Read as ‘0’

bit 0

UASUSPND: Automatic Suspend Enable bit
1 = USB module automatically suspends upon entry to Sleep mode. See the USUSPEND bit
(U1PWRC<1>) in Register 10-5.
0 = USB module does not automatically suspend upon entry to Sleep mode. Software must use the
USUSPEND bit (U1PWRC<1>) to suspend the module, including the USB 48 MHz clock.

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REGISTER 10-21: U1EP0-U1EP15: USB ENDPOINT CONTROL REGISTER
Bit
Range
31:24
23:16
15:8
7:0

Bit
31/23/15/7

Bit
30/22/14/6

Bit
29/21/13/5

Bit
28/20/12/4

Bit
27/19/11/3

Bit
26/18/10/2

Bit
25/17/9/1

Bit
24/16/8/0

U-0

U-0

U-0

U-0

U-0

U-0

U-0

U-0

—

—

—

—

—

—

—

—

U-0

U-0

U-0

U-0

U-0

U-0

U-0

U-0

—

—

—

—

—

—

—

—

U-0

U-0

U-0

U-0

U-0

U-0

U-0

U-0

—

—

—

—

—

—

—

—

R/W-0

R/W-0

U-0

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

LSPD

RETRYDIS

—

EPCONDIS

EPRXEN

EPTXEN

EPSTALL

EPHSHK

Legend:
R = Readable bit

W = Writable bit

U = Unimplemented bit, read as ‘0’

-n = Value at POR

‘1’ = Bit is set

‘0’ = Bit is cleared

x = Bit is unknown

bit 31-8 Unimplemented: Read as ‘0’
bit 7

LSPD: Low-Speed Direct Connection Enable bit (Host mode and U1EP0 only)
1 = Direct connection to a Low-Speed device enabled
0 = Direct connection to a Low-Speed device disabled; hub required with PRE_PID

bit 6

RETRYDIS: Retry Disable bit (Host mode and U1EP0 only)
1 = Retry NAKed transactions disabled
0 = Retry NAKed transactions enabled; retry done in hardware

bit 5

Unimplemented: Read as ‘0’

bit 4

EPCONDIS: Bidirectional Endpoint Control bit
If EPTXEN = 1 and EPRXEN = 1:
1 = Disable Endpoint n from Control transfers; only TX and RX transfers allowed
0 = Enable Endpoint n for Control (SETUP) transfers; TX and RX transfers also allowed
Otherwise, this bit is ignored.

bit 3

EPRXEN: Endpoint Receive Enable bit
1 = Endpoint n receive is enabled
0 = Endpoint n receive is disabled

bit 2

EPTXEN: Endpoint Transmit Enable bit
1 = Endpoint n transmit is enabled
0 = Endpoint n transmit is disabled

bit 1

EPSTALL: Endpoint Stall Status bit
1 = Endpoint n was stalled
0 = Endpoint n was not stalled

bit 0

EPHSHK: Endpoint Handshake Enable bit
1 = Endpoint Handshake is enabled
0 = Endpoint Handshake is disabled (typically used for isochronous endpoints)

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11.0

These functions depend on which peripheral features
are on the device. In general, when a peripheral is functioning, that pin may not be used as a general purpose
I/O pin.

I/O PORTS

Note:

This data sheet summarizes the features
of the PIC32MX1XX/2XX 28/36/44-pin
Family of devices. It is not intended to be
a comprehensive reference source. To
complement the information in this data
sheet, refer to Section 12. “I/O Ports”
(DS60001120), which is available from the
Documentation > Reference Manual
section of the Microchip PIC32 web site
(www.microchip.com/pic32).

Key features of this module include:
• Individual output pin open-drain enable/disable
• Individual input pin weak pull-up and pull-down
• Monitor selective inputs and generate interrupt
when change in pin state is detected
• Operation during Sleep and Idle modes
• Fast bit manipulation using CLR, SET, and INV
registers
Figure 11-1 illustrates a block diagram of a typical
multiplexed I/O port.

General purpose I/O pins are the simplest of peripherals. They allow the PIC® MCU to monitor and control
other devices. To add flexibility and functionality, some
pins are multiplexed with alternate functions.

FIGURE 11-1:

BLOCK DIAGRAM OF A TYPICAL MULTIPLEXED PORT STRUCTURE
Peripheral Module
Peripheral Module Enable
Peripheral Output Enable
Peripheral Output Data

PIO Module
RD ODC

Data Bus

D

SYSCLK

Q

ODC
CK
EN Q

WR ODC
1

RD TRIS

0

I/O Cell

0
1
D

Q
1

TRIS
CK
EN Q

0

WR TRIS
Output Multiplexers
D

Q
I/O Pin

LAT
CK
EN Q

WR LAT
WR PORT
RD LAT

1
RD PORT
0
Sleep

Q
Q

D
CK

Q
Q

D
CK

PBCLK
Synchronization
Peripheral Input

Legend:
Note:

R
Peripheral Input Buffer

R = Peripheral input buffer types may vary. Refer to Table 1-1 for peripheral details.
This block diagram is a general representation of a shared port/peripheral structure and is only provided for illustration purposes. The
actual structure for any specific port/peripheral combination may be different than it is shown here.

 2011-2018 Microchip Technology Inc.

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11.1

Parallel I/O (PIO) Ports

All port pins have 10 registers directly associated with
their operation as digital I/O. The data direction register
(TRISx) determines whether the pin is an input or an
output. If the data direction bit is a ‘1’, then the pin is an
input. All port pins are defined as inputs after a Reset.
Reads from the latch (LATx) read the latch. Writes to
the latch write the latch. Reads from the port (PORTx)
read the port pins, while writes to the port pins write the
latch.

11.1.1

OPEN-DRAIN CONFIGURATION

In addition to the PORTx, LATx, and TRISx registers for
data control, some port pins can also be individually
configured for either digital or open-drain output. This is
controlled by the Open-Drain Control register, ODCx,
associated with each port. Setting any of the bits configures the corresponding pin to act as an open-drain
output.
The open-drain feature allows the generation of
outputs higher than VDD (e.g., 5V) on any desired 5Vtolerant pins by using external pull-up resistors. The
maximum open-drain voltage allowed is the same as
the maximum VIH specification.
See the “Pin Diagrams” section for the available pins
and their functionality.

11.1.2

CONFIGURING ANALOG AND
DIGITAL PORT PINS

The ANSELx register controls the operation of the
analog port pins. The port pins that are to function as
analog inputs must have their corresponding ANSEL
and TRIS bits set. In order to use port pins for I/O
functionality with digital modules, such as Timers,
UARTs, etc., the corresponding ANSELx bit must be
cleared.
The ANSELx register has a default value of 0xFFFF;
therefore, all pins that share analog functions are
analog (not digital) by default.
If the TRIS bit is cleared (output) while the ANSELx bit
is set, the digital output level (VOH or VOL) is converted
by an analog peripheral, such as the ADC module or
Comparator module.
When the PORT register is read, all pins configured as
analog input channels are read as cleared (a low level).
Pins configured as digital inputs do not convert an
analog input. Analog levels on any pin defined as a
digital input (including the ANx pins) can cause the
input buffer to consume current that exceeds the
device specifications.

11.1.3

11.1.4

INPUT CHANGE NOTIFICATION

The input change notification function of the I/O ports
allows the PIC32MX1XX/2XX 28/36/44-pin Family
devices to generate interrupt requests to the processor
in response to a change-of-state on selected input pins.
This feature can detect input change-of-states even in
Sleep mode, when the clocks are disabled. Every I/O
port pin can be selected (enabled) for generating an
interrupt request on a change-of-state.
Five control registers are associated with the CN functionality of each I/O port. The CNENx registers contain
the CN interrupt enable control bits for each of the input
pins. Setting any of these bits enables a CN interrupt
for the corresponding pins.
The CNSTATx register indicates whether a change
occurred on the corresponding pin since the last read
of the PORTx bit.
Each I/O pin also has a weak pull-up and a weak
pull-down connected to it. The pull-ups act as a
current source or sink source connected to the pin,
and eliminate the need for external resistors when
push-button or keypad devices are connected. The
pull-ups and pull-downs are enabled separately using
the CNPUx and the CNPDx registers, which contain
the control bits for each of the pins. Setting any of
the control bits enables the weak pull-ups and/or
pull-downs for the corresponding pins.
Note:

Pull-ups and pull-downs on change notification pins should always be disabled
when the port pin is configured as a digital
output.

An additional control register (CNCONx) is shown in
Register 11-3.

11.2

CLR, SET and INV Registers

Every I/O module register has a corresponding CLR
(clear), SET (set) and INV (invert) register designed to
provide fast atomic bit manipulations. As the name of
the register implies, a value written to a SET, CLR or
INV register effectively performs the implied operation,
but only on the corresponding base register and only
bits specified as ‘1’ are modified. Bits specified as ‘0’
are not modified.
Reading SET, CLR and INV registers returns undefined
values. To see the affects of a write operation to a SET,
CLR, or INV register, the base register must be read.

I/O PORT WRITE/READ TIMING

One instruction cycle is required between a port
direction change or port write operation and a read
operation of the same port. Typically this instruction
would be a NOP.

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11.3

Peripheral Pin Select

A major challenge in general purpose devices is providing the largest possible set of peripheral features while
minimizing the conflict of features on I/O pins. The challenge is even greater on low pin-count devices. In an
application where more than one peripheral needs to
be assigned to a single pin, inconvenient workarounds
in application code or a complete redesign may be the
only option.
The Peripheral Pin Select (PPS) configuration provides
an alternative to these choices by enabling peripheral
set selection and their placement on a wide range of
I/O pins. By increasing the pinout options available on
a particular device, users can better tailor the device to
their entire application, rather than trimming the
application to fit the device.
The PPS configuration feature operates over a fixed
subset of digital I/O pins. Users may independently
map the input and/or output of most digital peripherals
to these I/O pins. PPS is performed in software and
generally does not require the device to be reprogrammed. Hardware safeguards are included that prevent accidental or spurious changes to the peripheral
mapping once it has been established.

11.3.1

AVAILABLE PINS

The number of available pins is dependent on the
particular device and its pin count. Pins that support the
PPS feature include the designation “RPn” in their full
pin designation, where “RP” designates a remappable
peripheral and “n” is the remappable port number.

11.3.2

Priority is given regardless of the type of peripheral that
is mapped. Remappable peripherals never take priority
over any analog functions associated with the pin.

11.3.3

PPS features are controlled through two sets of SFRs:
one to map peripheral inputs, and one to map outputs.
Because they are separately controlled, a particular
peripheral’s input and output (if the peripheral has both)
can be placed on any selectable function pin without
constraint.
The association of a peripheral to a peripheral-selectable pin is handled in two different ways, depending on
whether an input or output is being mapped.

11.3.4

INPUT MAPPING

The inputs of the PPS options are mapped on the basis
of the peripheral. That is, a control register associated
with a peripheral dictates the pin it will be mapped to.
The [pin name]R registers, where [pin name] refers to the
peripheral pins listed in Table 11-1, are used to configure peripheral input mapping (see Register 11-1). Each
register contains sets of 4 bit fields. Programming these
bit fields with an appropriate value maps the RPn pin
with the corresponding value to that peripheral. For any
given device, the valid range of values for any bit field is
shown in Table 11-1.
For example, Figure 11-2 illustrates the remappable
pin selection for the U1RX input.

FIGURE 11-2:

AVAILABLE PERIPHERALS

The peripherals managed by the PPS are all digitalonly peripherals. These include general serial communications (UART and SPI), general purpose timer clock
inputs, timer-related peripherals (input capture and output compare) and interrupt-on-change inputs.

CONTROLLING PERIPHERAL PIN
SELECT

REMAPPABLE INPUT
EXAMPLE FOR U1RX
U1RXR<3:0>
0

RPA2
1

In comparison, some digital-only peripheral modules
are never included in the PPS feature. This is because
the peripheral’s function requires special I/O circuitry
on a specific port and cannot be easily connected to
multiple pins. These modules include I2C among others. A similar requirement excludes all modules with
analog inputs, such as the Analog-to-Digital Converter
(ADC).

RPB6

A key difference between remappable and non-remappable peripherals is that remappable peripherals are
not associated with a default I/O pin. The peripheral
must always be assigned to a specific I/O pin before it
can be used. In contrast, non-remappable peripherals
are always available on a default pin, assuming that the
peripheral is active and not conflicting with another
peripheral.

RPn

2
RPA4

U1RX input
to peripheral

n

Note:

For input only, PPS functionality does not have
priority over TRISx settings. Therefore, when
configuring RPn pin for input, the corresponding
bit in the TRISx register must also be configured
for input (set to ‘1’).

When a remappable peripheral is active on a given I/O
pin, it takes priority over all other digital I/O and digital
communication peripherals associated with the pin.

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TABLE 11-1:

INPUT PIN SELECTION
[pin name]R Value to
RPn Pin Selection

Peripheral Pin

[pin name]R SFR

[pin name]R bits

INT4

INT4R

INT4R<3:0>

T2CK

T2CKR

T2CKR<3:0>

IC4

IC4R

IC4R<3:0>

SS1

SS1R

SS1R<3:0>

REFCLKI

REFCLKIR

REFCLKIR<3:0>

INT3

INT3R

INT3R<3:0>

T3CK

T3CKR

T3CKR<3:0>

IC3

IC3R

IC3R<3:0>

U1CTS

U1CTSR

U1CTSR<3:0>

U2RX

U2RXR

U2RXR<3:0>

SDI1

SDI1R

SDI1R<3:0>

INT2

INT2R

INT2R<3:0>

T4CK

T4CKR

T4CKR<3:0>

IC1

IC1R

IC1R<3:0>

IC5

IC5R

IC5R<3:0>

U1RX

U1RXR

U1RXR<3:0>

U2CTS

U2CTSR

U2CTSR<3:0>

SDI2

SDI2R

SDI2R<3:0>

OCFB

OCFBR

OCFBR<3:0>

INT1

INT1R

INT1R<3:0>

T5CK

T5CKR

T5CKR<3:0>

IC2

IC2R

IC2R<3:0>

SS2

SS2R

SS2R<3:0>

OCFA

OCFAR

OCFAR<3:0>

Note 1:
2:

0000 = RPA0
0001 = RPB3
0010 = RPB4
0011 = RPB15
0100 = RPB7
0101 = RPC7(2)
0110 = RPC0(1)
0111 = RPC5(2)
1000 = Reserved
•
•
•

1111 = Reserved
0000 = RPA1
0001 = RPB5
0010 = RPB1
0011 = RPB11
0100 = RPB8
0101 = RPA8(2)
0110 = RPC8(2)
0111 = RPA9(2)
1000 = Reserved
•
•
•

1111 = Reserved
0000 = RPA2
0001 = RPB6
0010 = RPA4
0011 = RPB13
0100 = RPB2
0101 = RPC6(2)
0110 = RPC1(1)
0111 = RPC3(1)
1000 = Reserved
•
•
•

1111 = Reserved
0000 = RPA3
0001 = RPB14
0010 = RPB0
0011 = RPB10
0100 = RPB9
0101 = RPC9(1)
0110 = RPC2(2)
0111 = RPC4(2)
1000 = Reserved
•
•
•

1111 = Reserved

This pin is not available on 28-pin devices.
This pin is only available on 44-pin devices.

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11.3.5

OUTPUT MAPPING

11.3.6.1

In contrast to inputs, the outputs of the PPS options
are mapped on the basis of the pin. In this case, a
control register associated with a particular pin
dictates the peripheral output to be mapped. The
RPnR registers (Register 11-2) are used to control
output mapping. Like the [pin name]R registers, each
register contains sets of 4 bit fields. The value of the
bit field corresponds to one of the peripherals, and
that peripheral’s output is mapped to the pin (see
Table 11-2 and Figure 11-3).
A null output is associated with the output register reset
value of ‘0’. This is done to ensure that remappable
outputs remain disconnected from all output pins by
default.

FIGURE 11-3:

EXAMPLE OF
MULTIPLEXING OF
REMAPPABLE OUTPUT
FOR RPA0
RPA0R<3:0>

Default
U1TX Output
U1RTS Output

0
1
2

RPA0
Output Data

Control Register Lock Sequence

Under normal operation, writes to the RPnR and [pin
name]R registers are not allowed. Attempted writes
appear to execute normally, but the contents of the
registers remain unchanged. To change these registers, they must be unlocked in hardware. The register lock is controlled by the Configuration bit,
IOLOCK (CFGCON<13>). Setting IOLOCK prevents
writes to the control registers; clearing IOLOCK
allows writes.
To set or clear the IOLOCK bit, an unlock sequence
must be executed. Refer to Section 6. “Oscillator”
(DS60001112) in the “PIC32 Family Reference
Manual” for details.

11.3.6.2

Configuration Bit Select Lock

As an additional level of safety, the device can be
configured to prevent more than one write session to
the RPnR and [pin name]R registers. The Configuration
bit, IOL1WAY (DEVCFG3<29>), blocks the IOLOCK bit
from being cleared after it has been set once. If
IOLOCK remains set, the register unlock procedure
does not execute, and the PPS control registers cannot
be written to. The only way to clear the bit and reenable peripheral remapping is to perform a device
Reset.
In the default (unprogrammed) state, IOL1WAY is set,
restricting users to one write session.

14
15

11.3.6

CONTROLLING CONFIGURATION
CHANGES

Because peripheral remapping can be changed during
run time, some restrictions on peripheral remapping
are needed to prevent accidental configuration
changes. PIC32 devices include two features to
prevent alterations to the peripheral map:
• Control register lock sequence
• Configuration bit select lock

 2011-2018 Microchip Technology Inc.

DS60001168K-page 133

PIC32MX1XX/2XX 28/36/44-PIN FAMILY
TABLE 11-2:

OUTPUT PIN SELECTION
RPnR Value to Peripheral
Selection

RPn Port Pin

RPnR SFR

RPnR bits

RPA0

RPA0R

RPA0R<3:0>

RPB3

RPB3R

RPB3R<3:0>

RPB4

RPB4R

RPB4R<3:0>

RPB15

RPB15R

RPB15R<3:0>

RPB7

RPB7R

RPB7R<3:0>

RPC7

RPC7R

RPC7R<3:0>

RPC0

RPC0R

RPC0R<3:0>

RPC5

RPC5R

RPC5R<3:0>

RPA1

RPA1R

RPA1R<3:0>

RPB5

RPB5R

RPB5R<3:0>

RPB1

RPB1R

RPB1R<3:0>

RPB11

RPB11R

RPB11R<3:0>

RPB8

RPB8R

RPB8R<3:0>

RPA8

RPA8R

RPA8R<3:0>

RPC8

RPC8R

RPC8R<3:0>

RPA9

RPA9R

RPA9R<3:0>

1111 = Reserved

RPA2

RPA2R

RPA2R<3:0>

RPB6

RPB6R

RPB6R<3:0>

RPA4

RPA4R

RPA4R<3:0>

RPB13

RPB13R

RPB13R<3:0>

RPB2

RPB2R

RPB2R<3:0>

RPC6

RPC6R

RPC6R<3:0>

0000 = No Connect
0001 = Reserved
0010 = Reserved
0011 = SDO1
0100 = SDO2
0101 = OC4
0110 = OC5
0111 = REFCLKO
1000 = Reserved

RPC1

RPC1R

RPC1R<3:0>

•
•
•

RPC3

RPC3R

RPC3R<3:0>

1111 = Reserved

RPA3

RPA3R

RPA3R<3:0>

RPB14

RPB14R

RPB14R<3:0>

RPB0

RPB0R

RPB0R<3:0>

RPB10

RPB10R

RPB10R<3:0>

RPB9

RPB9R

RPB9R<3:0>

RPC9

RPC9R

RPC9R<3:0>

0000 = No Connect
0001 = U1RTS
0010 = U2TX
0011 = Reserved
0100 = SS2
0101 = OC3
0110 = Reserved
0111 = C1OUT
1000 = Reserved

RPC2

RPC2R

RPC2R<3:0>

•
•
•

RPC4

RPC4R

RPC4R<3:0>

1111 = Reserved

DS60001168K-page 134

0000 = No Connect
0001 = U1TX
0010 = U2RTS
0011 = SS1
0100 = Reserved
0101 = OC1
0110 = Reserved
0111 = C2OUT
1000 = Reserved
•
•
•

1111 = Reserved
0000 = No Connect
0001 = Reserved
0010 = Reserved
0011 = SDO1
0100 = SDO2
0101 = OC2
0110 = Reserved
0111 = C3OUT
•
•
•

 2011-2018 Microchip Technology Inc.

Ports Control Registers

Virtual Address
(BF88_#)

TABLE 11-3:

6010

TRISA
PORTA

6030

LATA

6040
6050
6060

ODCA
CNPUA
CNPDA

6070 CNCONA
6080

CNENA

6090 CNSTATA
Legend:
Note

1:
2:

31/15

30/14

29/13

28/12

27/11

26/10

25/9

24/8

23/7

22/6

21/5

20/4

19/3

18/2

31:16

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

0000

15:0

—
—

—
—

—
—

—
—

—
—

—
—

—
—

—
—

—
—

—
—

—
—

—
—

—
—

—
—

ANSA1
—

ANSA0
—

0003
0000

—
—

—
—

—
—

—
—

—
—

TRISA10(2)
—

TRISA9(2)
—

TRISA8(2)
—

TRISA7(2)
—

—
—

—
—

TRISA4

TRISA3

TRISA2

TRISA1

TRISA0

079F
0000

—
—

—
—

—
—

—
—

—
—

RA10(2)
—

RA9(2)
—

RA8(2)
—

RA7(2)
—

—
—

—
—

RA4
—

RA3
—

RA2
—

RA1
—

RA0
—

xxxx
0000

—
—

—
—

—
—

—
—

—
—

LATA10(2)
—

LATA9(2)
—

LATA8(2)
—

LATA7(2)
—

—
—

—
—

LATA4
—

LATA3
—

LATA2
—

LATA1
—

LATA0
—

xxxx
0000

—
—

—
—

—
—

—
—

—
—

ODCA10(2)
—

ODCA9(2)
—

ODCA8(2)
—

ODCA7(2)
—

—
—

—
—

ODCA4
—

ODCA3
—

ODCA2
—

ODCA1
—

ODCA0
—

0000
0000

—
—

—
—

—
—

—
—

—
—

CNPUA10(2)
—

CNPUA9(2)
—

CNPUA8(2)
—

CNPUA7(2)
—

—
—

—
—

CNPUA4
—

CNPUA3
—

CNPUA2
—

CNPUA1
—

CNPUA0 0000
—
0000

31:16

—
—

—
—

—
—

—
—

—
—

CNPDA10(2)
—

CNPDA9(2)
—

CNPDA8(2)
—

CNPDA7(2)
—

—
—

—
—

CNPDA4
—

CNPDA3
—

CNPDA2
—

CNPDA1
—

CNPDA0 0000
—
0000

31:16
15:0
31:16
15:0
31:16
15:0
31:16
15:0
31:16
15:0
31:16
15:0

17/1

16/0

All Resets

Bit Range

Register
Name(1)

Bits

6000 ANSELA

6020

PORTA REGISTER MAP

15:0

ON

31:16

—

—
—

SIDL
—

—
—

—
—

—
—

—
—

—
—

—
—

—
—

—
—

—
—

—
—

—
—

—
—

—
—

0000
0000

15:0

—
—

—
—

—
—

—
—

—
—

CNIEA10(2)
—

CNIEA9(2)
—

CNIEA8(2)
—

CNIEA7(2)
—

—
—

—
—

CNIEA4
—

CNIEA3
—

CNIEA2
—

CNIEA1
—

CNIEA0
—

0000
0000

—

—

31:16

15:0
—
—
—
—
—
CNSTATA10(2) CNSTATA9(2) CNSTATA8(2) CNSTATA7(2)
x = unknown value on Reset; — = unimplemented, read as ‘0’. Reset values are shown in hexadecimal.

CNSTATA4 CNSTATA3 CNSTATA2 CNSTATA1 CNSTATA0 0000

All registers in this table have corresponding CLR, SET and INV registers at their virtual addresses, plus offsets of 0x4, 0x8 and 0xC, respectively. See Section 11.2 “CLR, SET and INV Registers” for
more information.
This bit is only available on 44-pin devices.

DS60001168K-page 135

PIC32MX1XX/2XX 28/36/44-PIN FAMILY

 2011-2018 Microchip Technology Inc.

11.4

Virtual Address
(BF88_#)
6110

TRISB

6120

PORTB

6130

LATB

6140

ODCB

6150

CNPUB

6160

CNPDB

31/15

30/14

29/13

28/12

27/11

26/10

25/9

24/8

23/7

22/6

21/5

20/4

19/3

18/2

17/1

—
ANSB15

—
ANSB14

—
ANSB13

—
ANSB12(2)

—
—

—
—

—
—

—
—

—
—

—
—

—
—

—
—

—
ANSB3

—
ANSB2

—

—

0000

ANSB1

ANSB0

E00F

—
15:0 TRISB15

—
TRISB14

—
TRISB13

—
TRISB12(2)

—
TRISB11

—
TRISB10

—
TRISB9

—
TRISB8

—
TRISB7

—
TRISB6(2)

—
TRISB5

—
TRISB4

—
TRISB3

—
TRISB2

—
TRISB1

—
TRISB0

0000
FFFF

—
RB15

—
RB14

—
RB13

—
RB12(2)

—
RB11

—
RB10

—
RB9

—
RB8

—
RB7

—
RC6(2)

—
RB5

RB4

RB3

RB2

RB1

RB0

0000
xxxx

—
LATB15

—
LATB14

—
LATB13

—
LATB12(2)

—
LATB11

—
LATB10

—
LATB9

—
LATB8

—
LATB7

—
LATB6(2)

—
LATB5

—
LATB4

—
LATB3

—
LATB2

—
LATB1

—
LATB0

0000
xxxx

—
15:0 ODCB15

—
ODCB14

—
ODCB13

—
ODCB12(2)

—
ODCB11

—
ODCB10

—
ODCB9

—
ODCB8

—
ODCB7

—
ODCB6

—
ODCB5

—
ODCB4

—
ODCB3

—
ODCB2

—
ODCB1

—
ODCB0

0000
0000

31:16
15:0
31:16

31:16
15:0
31:16
15:0
31:16
31:16

—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
0000
15:0 CNPUB15 CNPUB14 CNPUB13 CNPUB12(2) CNPUB11 CNPUB10 CNPUB9 CNPUB8 CNPUB7 CNPUB6(2) CNPUB5 CNPUB4 CNPUB3 CNPUB2 CNPUB1 CNPUB0 0000

31:16

—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
0000
15:0 CNPDB15 CNPDB14 CNPDB13 CNPDB12(2) CNPDB11 CNPDB10 CNPDB9 CNPDB8 CNPDB7 CNPDB6(2) CNPDB5 CNPDB4 CNPDB3 CNPDB2 CNPDB1 CNPDB0 0000

31:16

—
—

—
SIDL

—
—

—
—

—
—

—
—

—
—

—
—

—
—

—
—

—
—

—
—

—
—

—
—

—
—

0000
0000

—
CNIEB14

—
CNIEB13

—
CNIEB11(2)

—
CNIEB11

—
CNIEB10

—
CNIEB9

—
CNIEB8

—
CNIEB7

—
CNIEB6(2)

—
CNIEB5

—
CNIEB4

—
CNIEB3

—
CNIEB2

—
CNIEB1

—
CNIEB0

0000
0000

—
—
—
—
—
—
—
—
CN
CN
CN
CN
CN
CN
CN
CN
STATB15 STATB14 STATB13 STATB12(2) STATB11 STATB10 STATB9 STATB8
x = unknown value on Reset; — = unimplemented, read as ‘0’. Reset values are shown in hexadecimal.

—
CN
STATB7

—
CN
STATB6(2)

—
CN
STATB5

—
CN
STATB4

—
CN
STATB3

—
CN
STATB2

—
CN
STATB1

—
CN
STATB0

6170 CNCONB
CNENB

15:0
31:16

Note 1:
2:

—
ON

—
15:0 CNIEB15

31:16

6190 CNSTATB
Legend:

16/0

All Resets

Bit Range

Register
Name

Bits

6100 ANSELB

6180

PORTB REGISTER MAP

15:0

0000
0000

All registers in this table have corresponding CLR, SET and INV registers at their virtual addresses, plus offsets of 0x4, 0x8 and 0xC, respectively. See Section 11.2 “CLR, SET and INV Registers” for
more information.
This bit is not available on PIC32MX2XX devices. The reset value for the TRISB register when this bit is not available is 0x0000EFBF.

 2011-2018 Microchip Technology Inc.

PIC32MX1XX/2XX 28/36/44-PIN FAMILY

DS60001168K-page 136

TABLE 11-4:

Virtual Address
(BF88_#)
6210

TRISC

6220

PORTC

6230

LATC

6240

ODCC

6250

CNPUC

6260

CNPDC

6270 CNCONC
CNENC

6290 CNSTATC
Legend:
Note 1:
2:
3:
4:

31:16
15:0
31:16
15:0
31:16
15:0
31:16
15:0
31:16
15:0
31:16
15:0
31:16
15:0
31:16
15:0
31:16
15:0
31:16
15:0

31/15 30/14 29/13 28/12 27/11 26/10

25/9

24/8

23/7

22/6

21/5

20/4

19/3

18/2

17/1

16/0

All Resets

Bit Range

Register
Name(1,2)

Bits

6200 ANSELC

6280

PORTC REGISTER MAP

—
—

—
—

—
—

—
—

—
—

—
—

—
—

—
—

—
—

—
—

—
—

—
—

—
ANSC3(4)

—
ANSC2(3)

—

—

ANSC1

ANSC0

0000
000F

—
—

—
—

—
—

—
—

—
—

—
—

—
TRISC9

—
TRISC8(3)

—
TRISC7(3)

—
TRISC6(3)

—
TRISC5(3)

—
TRISC4(3)

—
TRISC3

—
TRISC2(3)

—
TRISC1

—
TRISC0

0000
03FF

—
—

—
—

—
—

—
—

—
—

—
—

—
RC9

—
RC8(3)

—
RC7(3)

—
RC6(3)

—
RC5(3)

RC4(3)

RC3

RC2(3)

RC1

RC0

0000
xxxx

—
—

—
—

—
—

—
—

—
—

—
—

—
LATC9

—
LATC8(3)

—
LATC7(3)

—
LATC6(3)

—
LATC5(3)

—
LATC4(3)

—
LATC3

—
LATC2(3)

—
LATC1

—
LATC0

0000
xxxx

—
—

—
—

—
—

—
—

—
—

—
—

—
ODCC9

—
ODCC8(3)

—
ODCC7(3)

—
ODCC6(3)

—
ODCC5(3)

—
ODCC4(3)

—
ODCC3

—
ODCC2(3)

—
ODCC1

—
ODCC0

0000
0000

—
—

—
—

—
—

—
—

—
—

—
—

—
CNPUC9

—
CNPUC8(3)

—
CNPUC7(3)

—
CNPUC6(3)

—
CNPUC5(3)

—
CNPUC4(3)

—
CNPUC3

—
CNPUC2(3)

—
CNPUC1

—
0000
CNPUC0 0000

—
—

—
—

—
—

—
—

—
—

—
—

—
CNPDC9

—
CNPDC8(3)

—
CNPDC7(3)

—
CNPDC6(3)

—
CNPDC5(3)

—
CNPDC4(3)

—
CNPDC3

—
CNPDC2(3)

—
CNPDC1

—
0000
CNPDC0 0000

—
ON

—
—

—
SIDL

—
—

—
—

—
—

—
—

—
—

—
—

—
—

—
—

—
—

—
—

—
—

—
—

—
—

—
—

—
—

—
—

—
—

—
—

—
CNIEC9

—
CNIEC8(3)

—
CNIEC7(3)

—
CNIEC6(3)

—
CNIEC5(3)

—
CNIEC4(3)

—
CNIEC3

—
CNIEC2(3)

—
CNIEC1

—
—

—
—

—
—

—
—

—
—

—
—

—
—

0000
0000

—
0000
CNIEC0 0000

—
—
—
—
—
—
—
—
—
—
0000
CNSTATC9 CNSTATC8(3) CNSTATC7(3) CNSTATC6(3) CNSTATC5(3) CNSTATC4(3) CNSTATC3 CNSTATC2(3) CNSTATC1 CNSTATC0 0000

x = unknown value on Reset; — = unimplemented, read as ‘0’. Reset values are shown in hexadecimal.
All registers in this table have corresponding CLR, SET and INV registers at their virtual addresses, plus offsets of 0x4, 0x8 and 0xC, respectively. See Section 11.2 “CLR, SET and INV Registers” for
more information.
PORTC is not available on 28-pin devices.
This bit is only available on 44-pin devices.
This bit is only available on USB-enabled devices with 36 or 44 pins.

DS60001168K-page 137

PIC32MX1XX/2XX 28/36/44-PIN FAMILY

 2011-2018 Microchip Technology Inc.

TABLE 11-5:

Virtual Address
(BF80_#)

Register
Name

 2011-2018 Microchip Technology Inc.

FA04

INT1R

FA08

INT2R

FA0C

INT3R

FA10

INT4R

FA18

T2CKR

FA1C

T3CKR

FA20

T4CKR

FA24

T5CKR

FA28

IC1R

FA2C

IC2R

FA30

IC3R

FA34

IC4R

FA38

IC5R

FA48

OCFAR

FA4C

OCFBR

FA50

U1RXR

PERIPHERAL PIN SELECT INPUT REGISTER MAP

31/15

30/14

29/13

28/12

27/11

26/10

25/9

24/8

23/7

22/6

21/5

20/4

19/3

18/2

17/1

16/0

31:16

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

15:0

—

—

—

—

—

—

—

—

—

—

—

—

31:16

—

—

—

—

—

—

—

—

—

—

—

—

15:0

—

—

—

—

—

—

—

—

—

—

—

—

31:16

—

—

—

—

—

—

—

—

—

—

—

—

15:0

—

—

—

—

—

—

—

—

—

—

—

—

31:16

—

—

—

—

—

—

—

—

—

—

—

—

15:0

—

—

—

—

—

—

—

—

—

—

—

—

31:16

—

—

—

—

—

—

—

—

—

—

—

—

15:0

—

—

—

—

—

—

—

—

—

—

—

—

31:16

—

—

—

—

—

—

—

—

—

—

—

—

15:0

—

—

—

—

—

—

—

—

—

—

—

—

31:16

—

—

—

—

—

—

—

—

—

—

—

—

15:0

—

—

—

—

—

—

—

—

—

—

—

—

31:16

—

—

—

—

—

—

—

—

—

—

—

—

15:0

—

—

—

—

—

—

—

—

—

—

—

—

31:16

—

—

—

—

—

—

—

—

—

—

—

—

15:0

—

—

—

—

—

—

—

—

—

—

—

—

31:16

—

—

—

—

—

—

—

—

—

—

—

—

15:0

—

—

—

—

—

—

—

—

—

—

—

—

31:16

—

—

—

—

—

—

—

—

—

—

—

—

15:0

—

—

—

—

—

—

—

—

—

—

—

—

31:16

—

—

—

—

—

—

—

—

—

—

—

—

15:0

—

—

—

—

—

—

—

—

—

—

—

—

31:16

—

—

—

—

—

—

—

—

—

—

—

—

15:0

—

—

—

—

—

—

—

—

—

—

—

—

31:16

—

—

—

—

—

—

—

—

—

—

—

—

15:0

—

—

—

—

—

—

—

—

—

—

—

—

31:16

—

—

—

—

—

—

—

—

—

—

—

—

15:0

—

—

—

—

—

—

—

—

—

—

—

—

31:16

—

—

—

—

—

—

—

—

—

—

—

—

15:0

—

—

—

—

—

—

—

—

—

—

—

—

INT1R<3:0>
—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

U1RXR<3:0>

0000
0000

—

OCFBR<3:0>
—

0000
0000

OCFAR<3:0>
—

0000
0000

IC5R<3:0>
—

0000
0000

IC4R<3:0>
—

0000
0000

IC3R<3:0>
—

0000
0000

IC2R<3:0>
—

0000
0000

IC1R<3:0>
—

0000
0000

T5CKR<3:0>
—

0000
0000

T4CKR<3:0>
—

0000
0000

T3CKR<3:0>
—

0000
0000

T2CKR<3:0>
—

0000
0000

INT4R<3:0>
—

0000
0000

INT3R<3:0>
—

0000
0000

INT2R<3:0>
—

All Resets

Bit Range

Bits

0000
0000

—

0000
0000

PIC32MX1XX/2XX 28/36/44-PIN FAMILY

DS60001168K-page 138

TABLE 11-6:

Virtual Address
(BF80_#)

Register
Name

FA54

U1CTSR

FA58

U2RXR

FA5C

U2CTSR

FA84

SDI1R

FA88

SS1R

FA90

SDI2R

FA94

SS2R

PERIPHERAL PIN SELECT INPUT REGISTER MAP (CONTINUED)

FAB8 REFCLKIR

31/15

30/14

29/13

28/12

27/11

26/10

25/9

24/8

23/7

22/6

21/5

20/4

19/3

31:16

—

—

—

—

—

—

—

—

—

—

—

—

—

15:0

—

—

—

—

—

—

—

—

—

—

—

—

31:16

—

—

—

—

—

—

—

—

—

—

—

—

15:0

—

—

—

—

—

—

—

—

—

—

—

—

31:16

—

—

—

—

—

—

—

—

—

—

—

—

15:0

—

—

—

—

—

—

—

—

—

—

—

—

31:16

—

—

—

—

—

—

—

—

—

—

—

—

15:0

—

—

—

—

—

—

—

—

—

—

—

—

31:16

—

—

—

—

—

—

—

—

—

—

—

—

15:0

—

—

—

—

—

—

—

—

—

—

—

—

31:16

—

—

—

—

—

—

—

—

—

—

—

—

15:0

—

—

—

—

—

—

—

—

—

—

—

—

31:16

—

—

—

—

—

—

—

—

—

—

—

—

15:0

—

—

—

—

—

—

—

—

—

—

—

—

31:16

—

—

—

—

—

—

—

—

—

—

—

—

15:0

—

—

—

—

—

—

—

—

—

—

—

—

18/2

17/1

16/0

—

—

—

U1CTSR<3:0>
—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

REFCLKIR<3:0>

0000
0000

—

SS2R<3:0>
—

0000
0000

SDI2R<3:0>
—

0000
0000

SS1R<3:0>
—

0000
0000

SDI1R<3:0>
—

0000
0000

U2CTSR<3:0>
—

0000
0000

U2RXR<3:0>
—

All Resets

Bit Range

Bits

0000
0000

—

0000
0000

DS60001168K-page 139

PIC32MX1XX/2XX 28/36/44-PIN FAMILY

 2011-2018 Microchip Technology Inc.

TABLE 11-6:

PERIPHERAL PIN SELECT OUTPUT REGISTER MAP

RPA0R

FB04

RPA1R

FB08

RPA2R

FB0C

RPA3R

FB10

RPA4R

FB20

RPA8R(1)

FB24

RPA9R(1)

FB2C

RPB0R

FB30

RPB1R

FB34

RPB2R

FB38

RPB3R

FB3C

RPB4R

FB40

RPB5R

FB44

RPB6R(2)

FB48

RPB7R

Legend:
Note 1:
2:
3:

31/15

30/14

29/13

28/12

27/11

26/10

25/9

24/8

23/7

22/6

21/5

20/4

19/3

18/2

17/1

16/0

31:16

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

15:0

—

—

—

—

—

—

—

—

—

—

—

—

31:16

—

—

—

—

—

—

—

—

—

—

—

—

15:0

—

—

—

—

—

—

—

—

—

—

—

—

31:16

—

—

—

—

—

—

—

—

—

—

—

—

15:0

—

—

—

—

—

—

—

—

—

—

—

—

31:16

—

—

—

—

—

—

—

—

—

—

—

—

15:0

—

—

—

—

—

—

—

—

—

—

—

—

31:16

—

—

—

—

—

—

—

—

—

—

—

—

15:0

—

—

—

—

—

—

—

—

—

—

—

—

31:16

—

—

—

—

—

—

—

—

—

—

—

—

15:0

—

—

—

—

—

—

—

—

—

—

—

—

31:16

—

—

—

—

—

—

—

—

—

—

—

—

15:0

—

—

—

—

—

—

—

—

—

—

—

—

31:16

—

—

—

—

—

—

—

—

—

—

—

—

15:0

—

—

—

—

—

—

—

—

—

—

—

—

31:16

—

—

—

—

—

—

—

—

—

—

—

—

15:0

—

—

—

—

—

—

—

—

—

—

—

—

31:16

—

—

—

—

—

—

—

—

—

—

—

—

15:0

—

—

—

—

—

—

—

—

—

—

—

—

31:16

—

—

—

—

—

—

—

—

—

—

—

—

15:0

—

—

—

—

—

—

—

—

—

—

—

—

31:16

—

—

—

—

—

—

—

—

—

—

—

—

15:0

—

—

—

—

—

—

—

—

—

—

—

—

31:16

—

—

—

—

—

—

—

—

—

—

—

—

15:0

—

—

—

—

—

—

—

—

—

—

—

—

31:16

—

—

—

—

—

—

—

—

—

—

—

—

15:0

—

—

—

—

—

—

—

—

—

—

—

—

31:16

—

—

—

—

—

—

—

—

—

—

—

—

15:0

—

—

—

—

—

—

—

—

—

—

—

—

x = unknown value on Reset; — = unimplemented, read as ‘0’. Reset values are shown in hexadecimal.
This register is only available on 44-pin devices.
This register is only available on PIC32MX1XX devices.
This register is only available on 36-pin and 44-pin devices.

RPA0<3:0>
—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

RPB7<3:0>

0000
0000

—

RPB6<3:0>
—

0000
0000

RPB5<3:0>
—

0000
0000

RPB4<3:0>
—

0000
0000

RPB3<3:0>
—

0000
0000

RPB2<3:0>
—

0000
0000

RPB1<3:0>
—

0000
0000

RPB0<3:0>
—

0000
0000

RPA9<3:0>
—

0000
0000

RPA8<3:0>
—

0000
0000

RPA4<3:0>
—

0000
0000

RPA3<3:0>
—

0000
0000

RPA2<3:0>
—

0000
0000

RPA1<3:0>
—

All Resets

FB00

Bit Range

Register
Name

 2011-2018 Microchip Technology Inc.

Virtual Address
(BF80_#)

Bits

0000
0000

—

0000
0000

PIC32MX1XX/2XX 28/36/44-PIN FAMILY

DS60001168K-page 140

TABLE 11-7:

PERIPHERAL PIN SELECT OUTPUT REGISTER MAP (CONTINUED)

RPB8R

FB50

RPB9R

FB54

RPB10R

FB58

RPB11R

FB60

RPB13R

FB64

RPB14R

FB68

RPB15R

FB6C

RPC0R(3)

FB70

RPC1R(3)

FB74

RPC2R(1)

FB78

RPC3R(3)

FB7C

RPC4R(1)

FB80

RPC5R(1)

FB84

RPC6R(1)

FB88

RPC7R(1)

Legend:
Note 1:
2:
3:

31/15

30/14

29/13

28/12

27/11

26/10

25/9

24/8

23/7

22/6

21/5

20/4

19/3

18/2

17/1

16/0

31:16

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

15:0

—

—

—

—

—

—

—

—

—

—

—

—

31:16

—

—

—

—

—

—

—

—

—

—

—

—

15:0

—

—

—

—

—

—

—

—

—

—

—

—

31:16

—

—

—

—

—

—

—

—

—

—

—

—

15:0

—

—

—

—

—

—

—

—

—

—

—

—

31:16

—

—

—

—

—

—

—

—

—

—

—

—

15:0

—

—

—

—

—

—

—

—

—

—

—

—

31:16

—

—

—

—

—

—

—

—

—

—

—

—

15:0

—

—

—

—

—

—

—

—

—

—

—

—

31:16

—

—

—

—

—

—

—

—

—

—

—

—

15:0

—

—

—

—

—

—

—

—

—

—

—

—

31:16

—

—

—

—

—

—

—

—

—

—

—

—

15:0

—

—

—

—

—

—

—

—

—

—

—

—

31:16

—

—

—

—

—

—

—

—

—

—

—

—

15:0

—

—

—

—

—

—

—

—

—

—

—

—

31:16

—

—

—

—

—

—

—

—

—

—

—

—

15:0

—

—

—

—

—

—

—

—

—

—

—

—

31:16

—

—

—

—

—

—

—

—

—

—

—

—

15:0

—

—

—

—

—

—

—

—

—

—

—

—

31:16

—

—

—

—

—

—

—

—

—

—

—

—

15:0

—

—

—

—

—

—

—

—

—

—

—

—

31:16

—

—

—

—

—

—

—

—

—

—

—

—

15:0

—

—

—

—

—

—

—

—

—

—

—

—

31:16

—

—

—

—

—

—

—

—

—

—

—

—

15:0

—

—

—

—

—

—

—

—

—

—

—

—

31:16

—

—

—

—

—

—

—

—

—

—

—

—

15:0

—

—

—

—

—

—

—

—

—

—

—

—

31:16

—

—

—

—

—

—

—

—

—

—

—

—

15:0

—

—

—

—

—

—

—

—

—

—

—

—

x = unknown value on Reset; — = unimplemented, read as ‘0’. Reset values are shown in hexadecimal.
This register is only available on 44-pin devices.
This register is only available on PIC32MX1XX devices.
This register is only available on 36-pin and 44-pin devices.

RPB8<3:0>
—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

RPC7<3:0>

0000
0000

—

RPC6<3:0>
—

0000
0000

RPC5<3:0>
—

0000
0000

RPC4<3:0>
—

0000
0000

RPC3<3:0>
—

0000
0000

RPC2<3:0>
—

0000
0000

RPC1<3:0>
—

0000
0000

RPC0<3:0>
—

0000
0000

RPB15<3:0>
—

0000
0000

RPB14<3:0>
—

0000
0000

RPB13<3:0>
—

0000
0000

RPB11<3:0>
—

0000
0000

RPB10<3:0>
—

0000
0000

RPB9<3:0>
—

All Resets

FB4C

Bit Range

Register
Name

DS60001168K-page 141

Virtual Address
(BF80_#)

Bits

0000
0000

—

0000
0000

PIC32MX1XX/2XX 28/36/44-PIN FAMILY

 2011-2018 Microchip Technology Inc.

TABLE 11-7:

PERIPHERAL PIN SELECT OUTPUT REGISTER MAP (CONTINUED)

RPC8R(1)

FB90

RPC9R(3)

Legend:
Note 1:
2:
3:

31/15

30/14

29/13

28/12

27/11

26/10

25/9

24/8

23/7

22/6

21/5

20/4

19/3

18/2

17/1

16/0

31:16

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

15:0

—

—

—

—

—

—

—

—

—

—

—

—

31:16

—

—

—

—

—

—

—

—

—

—

—

—

15:0

—

—

—

—

—

—

—

—

—

—

—

—

x = unknown value on Reset; — = unimplemented, read as ‘0’. Reset values are shown in hexadecimal.
This register is only available on 44-pin devices.
This register is only available on PIC32MX1XX devices.
This register is only available on 36-pin and 44-pin devices.

RPC8<3:0>
—

—

—

RPC9<3:0>

All Resets

Register
Name

FB8C

Bit Range

Virtual Address
(BF80_#)

Bits

0000
0000

—

0000
0000

 2011-2018 Microchip Technology Inc.

PIC32MX1XX/2XX 28/36/44-PIN FAMILY

DS60001168K-page 142

TABLE 11-7:

PIC32MX1XX/2XX 28/36/44-PIN FAMILY
REGISTER 11-1:
Bit
Range
31:24
23:16
15:8
7:0

[pin name]R: PERIPHERAL PIN SELECT INPUT REGISTER

Bit
31/23/15/7

Bit
30/22/14/6

Bit
29/21/13/5

U-0

U-0

U-0

Bit
Bit
28/20/12/4 27/19/11/3
U-0

Bit
26/18/10/2

Bit
25/17/9/1

Bit
24/16/8/0

U-0

U-0

U-0

U-0

—

—

—

—

—

—

—

—

U-0

U-0

U-0

U-0

U-0

U-0

U-0

U-0

—

—

—

—

—

—

—

—

U-0

U-0

U-0

U-0

U-0

U-0

U-0

U-0

—

—

—

—

—

—

—

—

U-0

U-0

U-0

U-0

R/W-0

R/W-0

R/W-0

R/W-0

—

—

—

—

[pin name]R<3:0>

Legend:
R = Readable bit

W = Writable bit

U = Unimplemented bit, read as ‘0’

-n = Value at POR

‘1’ = Bit is set

‘0’ = Bit is cleared

x = Bit is unknown

bit 31-4

Unimplemented: Read as ‘0’

bit 3-0

[pin name]R<3:0>: Peripheral Pin Select Input bits
Where [pin name] refers to the pins that are used to configure peripheral input mapping. See Table 11-1 for
input pin selection values.

Note:

Register values can only be changed if the Configuration bit, IOLOCK (CFGCON<13>), = 0.

REGISTER 11-2:
Bit
Range
31:24
23:16
15:8
7:0

RPnR: PERIPHERAL PIN SELECT OUTPUT REGISTER

Bit
31/23/15/7

Bit
30/22/14/6

Bit
29/21/13/5

U-0

U-0

U-0

Bit
Bit
28/20/12/4 27/19/11/3
U-0

Bit
26/18/10/2

Bit
25/17/9/1

Bit
24/16/8/0

U-0

U-0

U-0

U-0

—

—

—

—

—

—

—

—

U-0

U-0

U-0

U-0

U-0

U-0

U-0

U-0

—

—

—

—

—

—

—

—

U-0

U-0

U-0

U-0

U-0

U-0

U-0

U-0

—

—

—

—

—

—

—

—

U-0

U-0

U-0

U-0

R/W-0

R/W-0

R/W-0

R/W-0

—

—

—

—

RPnR<3:0>

Legend:
R = Readable bit

W = Writable bit

U = Unimplemented bit, read as ‘0’

-n = Value at POR

‘1’ = Bit is set

‘0’ = Bit is cleared

bit 31-4

Unimplemented: Read as ‘0’

bit 3-0

RPnR<3:0>: Peripheral Pin Select Output bits
See Table 11-2 for output pin selection values.

Note:

x = Bit is unknown

Register values can only be changed if the Configuration bit, IOLOCK (CFGCON<13>), = 0.

 2011-2018 Microchip Technology Inc.

DS60001168K-page 143

PIC32MX1XX/2XX 28/36/44-PIN FAMILY
REGISTER 11-3:
Bit
Range
31:24
23:16
15:8
7:0

CNCONx: CHANGE NOTICE CONTROL FOR PORTx REGISTER (x = A, B, C)

Bit
31/23/15/7

Bit
30/22/14/6

Bit
29/21/13/5

U-0

U-0

U-0

Bit
Bit
28/20/12/4 27/19/11/3
U-0

Bit
26/18/10/2

Bit
25/17/9/1

Bit
24/16/8/0

U-0

U-0

U-0

U-0

—

—

—

—

—

—

—

—

U-0

U-0

U-0

U-0

U-0

U-0

U-0

U-0

—

—

—

—

—

—

—

—

R/W-0

U-0

R/W-0

U-0

U-0

U-0

U-0

U-0

ON

—

SIDL

—

—

—

—

—

U-0

U-0

U-0

U-0

U-0

U-0

U-0

U-0

—

—

—

—

—

—

—

—

Legend:
R = Readable bit

W = Writable bit

U = Unimplemented bit, read as ‘0’

-n = Value at POR

‘1’ = Bit is set

‘0’ = Bit is cleared

x = Bit is unknown

bit 31-16 Unimplemented: Read as ‘0’
bit 15

ON: Change Notice (CN) Control ON bit
1 = CN is enabled
0 = CN is disabled

bit 14

Unimplemented: Read as ‘0’

bit 13

SIDL: Stop in Idle Control bit
1 = Idle mode halts CN operation
0 = Idle does not affect CN operation

bit 12-0

Unimplemented: Read as ‘0’

DS60001168K-page 144

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PIC32MX1XX/2XX 28/36/44-PIN FAMILY
12.0

The following modes are supported:

TIMER1

Note:

•
•
•
•

This data sheet summarizes the features
of the PIC32MX1XX/2XX 28/36/44-pin
Family of devices. It is not intended to be
a comprehensive reference source. To
complement the information in this data
sheet, refer to Section 14. “Timers”
(DS60001105), which is available from the
Documentation > Reference Manual
section of the Microchip PIC32 web site
(www.microchip.com/pic32).

12.1

Additional Supported Features

• Selectable clock prescaler
• Timer operation during CPU Idle and Sleep mode
• Fast bit manipulation using CLR, SET and INV
registers
• Asynchronous mode can be used with the SOSC
to function as a Real-Time Clock (RTC)

This family of PIC32 devices features one
synchronous/asynchronous 16-bit timer that can operate
as a free-running interval timer for various timing applications and counting external events. This timer can also
be used with the Low-Power Secondary Oscillator
(SOSC) for Real-Time Clock (RTC) applications.

FIGURE 12-1:

Synchronous Internal Timer
Synchronous Internal Gated Timer
Synchronous External Timer
Asynchronous External Timer

Figure 12-1 illustrates a general block diagram of
Timer1.

TIMER1 BLOCK DIAGRAM
Data Bus<31:0>
<15:0>

TSYNC

<15:0>

1

Reset

Sync

TMR1
0

Equal

16-bit Comparator

PR1

T1IF
Event Flag

0
Q

1

TGATE

D

Q

TGATE

TCS
ON

SOSCO/T1CK

x1
SOSCEN

SOSCI

Gate
Sync
PBCLK

10
00

Prescaler
1, 8, 64, 256

2
TCKPS<1:0>

Note:

The default state of the SOSCEN (OSCCON<1>) bit during a device Reset is controlled by the
FSOSCEN bit in Configuration Word, DEVCFG1.

 2011-2017 Microchip Technology Inc.

DS60001168K-page 145

Timer1 Control Registers

Virtual Address
(BF80_#)

TABLE 12-1:

TMR1

0620
Legend:
Note 1:

PR1

31/15

30/14

29/13

28/12

27/11

26/10

25/9

24/8

31:16

—

—

—

15:0

ON

31:16

—

—
—

SIDL
—

15:0
31:16

—

—

—

—

23/7

22/6

21/5

20/4

19/3

—

—

—

—

TWDIS
—

TWIP
—

—
—

—
—

—

—

—

—

18/2

—

—

—

—

—

—

—
—

TGATE
—

—
—

TCKPS<1:0>
—
—

—
—

17/1

16/0

—

—

—

0000

TSYNC
—

TCS
—

—
—

0000
0000

—

—

—

—

—

—

TMR1<15:0>
—

15:0
PR1<15:0>
x = unknown value on Reset; — = unimplemented, read as ‘0’. Reset values are shown in hexadecimal.

All Resets

Bit Range

Register
Name(1)

Bits

0600 T1CON
0610

TIMER1 REGISTER MAP

0000
—

0000
FFFF

All registers in this table have corresponding CLR, SET and INV registers at their virtual addresses, plus offsets of 0x4, 0x8 and 0xC, respectively. See Section 11.2 “CLR, SET and INV Registers” for
more information.

 2011-2017 Microchip Technology Inc.

PIC32MX1XX/2XX 28/36/44-PIN FAMILY

DS60001168K-page 146

12.2

PIC32MX1XX/2XX 28/36/44-PIN FAMILY
REGISTER 12-1:
Bit
Range
31:24
23:16
15:8
7:0

T1CON: TYPE A TIMER CONTROL REGISTER

Bit
31/23/15/7

Bit
30/22/14/6

Bit
29/21/13/5

Bit
28/20/12/4

Bit
27/19/11/3

Bit
26/18/10/2

Bit
25/17/9/1

Bit
24/16/8/0

U-0

U-0

U-0

U-0

U-0

U-0

U-0

U-0

—

—

—

—

—

—

—

—

U-0

U-0

U-0

U-0

U-0

U-0

U-0

U-0

—

—

—

—

—

—

—

—

R/W-0

U-0

R/W-0

R/W-0

R-0

U-0

U-0

U-0

ON(1)

—

SIDL

TWDIS

TWIP

—

—

—

R/W-0

U-0

R/W-0

R/W-0

U-0

R/W-0

R/W-0

U-0

TGATE

—

—

TSYNC

TCS

—

TCKPS<1:0>

Legend:
R = Readable bit

W = Writable bit

U = Unimplemented bit, read as ‘0’

-n = Value at POR

‘1’ = Bit is set

‘0’ = Bit is cleared

x = Bit is unknown

bit 31-16 Unimplemented: Read as ‘0’
bit 15

ON: Timer On bit(1)
1 = Timer is enabled
0 = Timer is disabled

bit 14

Unimplemented: Read as ‘0’

bit 13

SIDL: Stop in Idle Mode bit
1 = Discontinue module operation when the device enters Idle mode
0 = Continue module operation when the device enters Idle mode

bit 12

TWDIS: Asynchronous Timer Write Disable bit
1 = Writes to Timer1 are ignored until pending write operation completes
0 = Back-to-back writes are enabled (Legacy Asynchronous Timer functionality)

bit 11

TWIP: Asynchronous Timer Write in Progress bit
In Asynchronous Timer mode:
1 = Asynchronous write to the Timer1 register in progress
0 = Asynchronous write to Timer1 register is complete
In Synchronous Timer mode:
This bit is read as ‘0’.

bit 10-8

Unimplemented: Read as ‘0’

bit 7

TGATE: Timer Gated Time Accumulation Enable bit
When TCS = 1:
This bit is ignored.
When TCS = 0:
1 = Gated time accumulation is enabled
0 = Gated time accumulation is disabled

bit 6

Unimplemented: Read as ‘0’

bit 5-4

TCKPS<1:0>: Timer Input Clock Prescale Select bits
11 = 1:256 prescale value
10 = 1:64 prescale value
01 = 1:8 prescale value
00 = 1:1 prescale value

Note 1:

When using 1:1 PBCmLK divisor, the user’s software should not read/write the peripheral SFRs in the
SYSCLK cycle immediately following the instruction that clears the module’s ON bit.

 2011-2017 Microchip Technology Inc.

DS60001168K-page 147

PIC32MX1XX/2XX 28/36/44-PIN FAMILY
REGISTER 12-1:

T1CON: TYPE A TIMER CONTROL REGISTER (CONTINUED)

bit 3

Unimplemented: Read as ‘0’

bit 2

TSYNC: Timer External Clock Input Synchronization Selection bit
When TCS = 1:
1 = External clock input is synchronized
0 = External clock input is not synchronized
When TCS = 0:
This bit is ignored.

bit 1

TCS: Timer Clock Source Select bit
1 = External clock from TxCKI pin
0 = Internal peripheral clock

bit 0

Unimplemented: Read as ‘0’

Note 1:

When using 1:1 PBCmLK divisor, the user’s software should not read/write the peripheral SFRs in the
SYSCLK cycle immediately following the instruction that clears the module’s ON bit.

DS60001168K-page 148

 2011-2017 Microchip Technology Inc.

PIC32MX1XX/2XX 28/36/44-PIN FAMILY
13.0
Note:

• Synchronous internal 32-bit timer
• Synchronous internal 32-bit gated timer
• Synchronous external 32-bit timer

TIMER2/3, TIMER4/5
This data sheet summarizes the features
of the PIC32MX1XX/2XX 28/36/44-pin
Family of devices. It is not intended to be
a comprehensive reference source. To
complement the information in this data
sheet, refer to Section 14. “Timers”
(DS60001105), which is available from the
Documentation > Reference Manual
section of the Microchip PIC32 web site
(www.microchip.com/pic32).

13.1

This family of PIC32 devices features four synchronous
16-bit timers (default) that can operate as a freerunning interval timer for various timing applications
and counting external events. The following modes are
supported:

Additional Supported Features

• Selectable clock prescaler
• Timers operational during CPU idle
• Time base for Input Capture and Output Compare
modules (Timer2 and Timer3 only)
• ADC event trigger (Timer3 in 16-bit mode,
Timer2/3 in 32-bit mode)
• Fast bit manipulation using CLR, SET and INV
registers

• Synchronous internal 16-bit timer
• Synchronous internal 16-bit gated timer
• Synchronous external 16-bit timer

Figure 13-1 and Figure 13-2 illustrate block diagrams
of Timer2/3 and Timer4/5.

Two 32-bit synchronous timers are available by
combining Timer2 with Timer3 and Timer4 with Timer5.
The 32-bit timers can operate in three modes:

FIGURE 13-1:

In this chapter, references to registers,
TxCON, TMRx and PRx, use ‘x’ to
represent Timer2 through Timer5 in 16-bit
modes. In 32-bit modes, ‘x’ represents
Timer2 or Timer4 and ‘y’ represents
Timer3 or Timer5.

Note:

TIMER2-TIMER5 BLOCK DIAGRAM (16-BIT)
Data Bus<31:0>
<15:0>

<15:0>

Reset

Sync

TMRx
ADC Event
Trigger(1)

Equal

Comparator x 16

PRx

TxIF
Event Flag

0
1
TGATE

Q

TGATE

D

Q

TCS
ON

TxCK

x1
Gate
Sync
PBCLK

Note

1:

ADC event trigger is available on Timer3 only.

 2011-2017 Microchip Technology Inc.

10
00

Prescaler
1, 2, 4, 8, 16,
32, 64, 256
3
TCKPS

DS60001168K-page 149

PIC32MX1XX/2XX 28/36/44-PIN FAMILY
FIGURE 13-2:

TIMER2/3, TIMER4/5 BLOCK DIAGRAM (32-BIT)
Data Bus<31:0>
<31:0>
Reset

TMRy(1)

MS Half Word
ADC Event
Trigger(2)

Equal

Sync

LS Half Word

32-bit Comparator

PRy
TyIF Event
Flag

TMRx(1)

PRx

0
1

TGATE

Q

D

TGATE

Q

TCS
ON

TxCK

x1
Gate
Sync
PBCLK

10
00

Prescaler
1, 2, 4, 8, 16,
32, 64, 256
3
TCKPS

Note 1:
2:

In this diagram, the use of ‘x’ in registers, TxCON, TMRx, PRx and TxCK, refers to either Timer2 or Timer4; the
use of ‘y’ in registers, TyCON, TMRy, PRy, TyIF, refers to either Timer3 or Timer5.
ADC event trigger is available only on the Timer2/3 pair.

DS60001168K-page 150

 2011-2017 Microchip Technology Inc.

Timer Control Registers

Virtual Address
(BF80_#)

TABLE 13-1:

TMR2

0820

PR2

0A00 T3CON
0A10 TMR3
0A20

PR3

0C00 T4CON
0C10 TMR4
0C20

PR4

0E00 T5CON
0E10 TMR5
0E20
Legend:
Note 1:

PR5

31/15

30/14

29/13

28/12

27/11

26/10

25/9

24/8

31:16

—

15:0

ON

31:16
15:0
31:16

23/7

22/6

—

—

—

—

—

—

—

—
—

SIDL
—

—
—

—
—

—
—

—
—

—

—

—

—

—

—

—

—

21/5

20/4

19/3

18/2

—

—

—
—

TGATE
—

—

—

—

TCKPS<2:0>
—

—

—

—

T32
—

17/1

16/0

—

—

—

0000

—
—

TCS
—

—
—

0000
0000

—

—

—

—

—

—

—

—

—

—

—

—

—

—

0000

—

TCKPS<2:0>
—

—

—
—

—
—

TCS
—

—
—

0000
0000

—

—

—

—

—

—

—

—

—

—

—

—

—

—

0000

—

TCKPS<2:0>
—

—

T32
—

—
—

TCS
—

—
—

0000
0000

—

—

—

—

—

—

—

—

—

—

—

—

—

—

0000

—

TCKPS<2:0>
—

—

—
—

—
—

TCS
—

—
—

0000
0000

—

—

—

—

—

—

—

TMR2<15:0>
—

15:0
31:16

—

—

—

—

—

—

—

—

—

15:0

ON

31:16

—

—
—

SIDL
—

—
—

—
—

—
—

—
—

—
—

TGATE
—

15:0
31:16

—

—

—

—

—

—

—

—

0000

PR2<15:0>

15:0
31:16

—

—

—

—

—

—

—

—

—

15:0

ON

31:16

—

—
—

SIDL
—

—
—

—
—

—
—

—
—

—
—

TGATE
—

15:0
31:16

—

—

—

—

—

—

—

—

0000

PR3<15:0>

15:0
31:16

—

—

—

—

—

—

—

—

—

15:0

ON

31:16

—

—
—

SIDL
—

—
—

—
—

—
—

—
—

—
—

TGATE
—

15:0
31:16

—

—

—

—

—

—

—

—

0000

PR4<15:0>

15:0
PR5<15:0>
x = unknown value on Reset; — = unimplemented, read as ‘0’. Reset values are shown in hexadecimal.

0000
FFFF

TMR5<15:0>
—

0000
FFFF

TMR4<15:0>
—

0000
FFFF

TMR3<15:0>
—

All Resets

Bit Range

Register
Name(1)

Bits

0800 T2CON
0810

TIMER2-TIMER5 REGISTER MAP

0000
0000
FFFF

All registers in this table have corresponding CLR, SET and INV registers at their virtual addresses, plus offsets of 0x4, 0x8 and 0xC, respectively. See Section 11.2 “CLR, SET and INV Registers” for
more information.

DS60001168K-page 151

PIC32MX1XX/2XX 28/36/44-PIN FAMILY

 2011-2017 Microchip Technology Inc.

13.2

PIC32MX1XX/2XX 28/36/44-PIN FAMILY
REGISTER 13-1:
Bit
Range
31:24
23:16
15:8
7:0

TXCON: TYPE B TIMER CONTROL REGISTER

Bit
31/23/15/7

Bit
30/22/14/6

Bit
29/21/13/5

Bit
28/20/12/4

Bit
27/19/11/3

Bit
26/18/10/2

Bit
25/17/9/1

Bit
24/16/8/0

U-0

U-0

U-0

U-0

U-0

U-0

U-0

U-0

—

—

—

—

—

—

—

—

U-0

U-0

U-0

U-0

U-0

U-0

U-0

U-0

—

—

—

—

—

—

—

—

R/W-0

U-0

R/W-0

U-0

U-0

U-0

U-0

U-0

ON(1,3)

—

SIDL(4)

—

—

—

—

—

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

U-0

R/W-0

U-0

T32(2)

—

TCS(3)

—

TGATE(3)

TCKPS<2:0>(3)

Legend:
R = Readable bit

W = Writable bit

U = Unimplemented bit, read as ‘0’

-n = Value at POR

‘1’ = Bit is set

‘0’ = Bit is cleared

x = Bit is unknown

bit 31-16

Unimplemented: Read as ‘0’

bit 15

ON: Timer On bit(1,3)
1 = Module is enabled
0 = Module is disabled

bit 14

Unimplemented: Read as ‘0’

bit 13

SIDL: Stop in Idle Mode bit(4)
1 = Discontinue module operation when the device enters Idle mode
0 = Continue module operation when the device enters Idle mode

bit 12-8

Unimplemented: Read as ‘0’

bit 7

TGATE: Timer Gated Time Accumulation Enable bit(3)
When TCS = 1:
This bit is ignored and is read as ‘0’.
When TCS = 0:
1 = Gated time accumulation is enabled
0 = Gated time accumulation is disabled

bit 6-4

TCKPS<2:0>: Timer Input Clock Prescale Select bits(3)
111 = 1:256 prescale value
110 = 1:64 prescale value
101 = 1:32 prescale value
100 = 1:16 prescale value
011 = 1:8 prescale value
010 = 1:4 prescale value
001 = 1:2 prescale value
000 = 1:1 prescale value

Note 1:

When using 1:1 PBCLK divisor, the user’s software should not read/write the peripheral SFRs in the
SYSCLK cycle immediately following the instruction that clears the module’s ON bit.
This bit is available only on even numbered timers (Timer2 and Timer4).
While operating in 32-bit mode, this bit has no effect for odd numbered timers (Timer3, and Timer5). All
timer functions are set through the even numbered timers.
While operating in 32-bit mode, this bit must be cleared on odd numbered timers to enable the 32-bit timer
in Idle mode.

2:
3:
4:

DS60001168K-page 152

 2011-2017 Microchip Technology Inc.

PIC32MX1XX/2XX 28/36/44-PIN FAMILY
REGISTER 13-1:

TXCON: TYPE B TIMER CONTROL REGISTER (CONTINUED)

bit 3

T32: 32-Bit Timer Mode Select bit(2)
1 = Odd numbered and even numbered timers form a 32-bit timer
0 = Odd numbered and even numbered timers form a separate 16-bit timer

bit 2

Unimplemented: Read as ‘0’

bit 1

TCS: Timer Clock Source Select bit(3)
1 = External clock from TxCK pin
0 = Internal peripheral clock

bit 0

Unimplemented: Read as ‘0’

Note 1:

When using 1:1 PBCLK divisor, the user’s software should not read/write the peripheral SFRs in the
SYSCLK cycle immediately following the instruction that clears the module’s ON bit.
This bit is available only on even numbered timers (Timer2 and Timer4).
While operating in 32-bit mode, this bit has no effect for odd numbered timers (Timer3, and Timer5). All
timer functions are set through the even numbered timers.
While operating in 32-bit mode, this bit must be cleared on odd numbered timers to enable the 32-bit timer
in Idle mode.

2:
3:
4:

 2011-2017 Microchip Technology Inc.

DS60001168K-page 153

PIC32MX1XX/2XX 28/36/44-PIN FAMILY
NOTES:

DS60001168K-page 154

 2011-2017 Microchip Technology Inc.

PIC32MX1XX/2XX 28/36/44-PIN FAMILY
14.0

WATCHDOG TIMER (WDT)

Note:

This data sheet summarizes the features
of the PIC32MX1XX/2XX 28/36/44-pin
Family of devices. It is not intended to be
a comprehensive reference source. To
complement the information in this data
sheet, refer to Section 9. “Watchdog,
Deadman, and Power-up Timers”
(DS60001114), which are available from
the Documentation > Reference Manual
section of the Microchip PIC32 web site
(www.microchip.com/pic32).

FIGURE 14-1:

The WDT, when enabled, operates from the internal
Low-Power Oscillator (LPRC) clock source and can be
used to detect system software malfunctions by resetting the device if the WDT is not cleared periodically in
software. Various WDT time-out periods can be
selected using the WDT postscaler. The WDT can also
be used to wake the device from Sleep or Idle mode.
The following are some of the key features of the WDT
module:
• Configuration or software controlled
• User-configurable time-out period
• Can wake the device from Sleep or Idle mode
Figure 14-1 illustrates a block diagram of the WDT and
Power-up timer.

WATCHDOG TIMER AND POWER-UP TIMER BLOCK DIAGRAM

PWRT Enable
WDT Enable

LPRC
Control
PWRT Enable
1:64 Output

LPRC
Oscillator

PWRT

1

Clock
25-bit Counter

WDTCLR = 1
WDT Enable
Wake
WDT Enable
Reset Event

25
WDT Counter Reset

0

Device Reset

1

NMI (Wake-up)

Power Save
Decoder
FWDTPS<4:0> (DEVCFG1<20:16>)

 2011-2018 Microchip Technology Inc.

DS60001168K-page 155

Watchdog Timer Control Registers

Virtual Address
(BF80_#)

TABLE 14-1:

Legend:
1:

31/15

30/14

29/13

28/12

27/11

26/10

25/9

24/8

23/7

22/6

21/5

31:16

—

—

—

—

—

—

—

—

—

—

—

15:0

ON

—
—
—
—
—
—
—
—
x = unknown value on Reset; — = unimplemented, read as ‘0’. Reset values are shown in hexadecimal.

20/4

19/3

18/2

—

—

—

SWDTPS<4:0>

17/1

16/0

—

—

WDTWINEN WDTCLR

All Resets

Bit Range

Register
Name(1)

Bits

0000 WDTCON

Note

WATCHDOG TIMER CONTROL REGISTER MAP

0000
0000

All registers in this table have corresponding CLR, SET and INV registers at their virtual addresses, plus offsets of 0x4, 0x8 and 0xC, respectively. See Section 11.2 “CLR, SET and INV Registers” for
more information.

 2011-2018 Microchip Technology Inc.

PIC32MX1XX/2XX 28/36/44-PIN FAMILY

DS60001168K-page 156

14.1

PIC32MX1XX/2XX 28/36/44-PIN FAMILY
REGISTER 14-1:
Bit
Range
31:24
23:16
15:8
7:0

WDTCON: WATCHDOG TIMER CONTROL REGISTER

Bit
31/23/15/7

Bit
30/22/14/6

Bit
29/21/13/5

Bit
28/20/12/4

Bit
27/19/11/3

Bit
26/18/10/2

Bit
25/17/9/1

Bit
24/16/8/0

U-0

U-0

U-0

U-0

U-0

U-0

U-0

U-0

—

—

—

—

—

—

—

—

U-0

U-0

U-0

U-0

U-0

U-0

U-0

U-0

—

—

—

—

—

—

—

R/W-0
(1,2)

—

U-0

U-0

U-0

U-0

U-0

U-0

U-0

—

—

—

—

—

—

—

U-0

R-y

R-y

R-y

R-y

R-y

R/W-0

R/W-0

ON

—

SWDTPS<4:0>

WDTWINEN WDTCLR

Legend:

y = Values set from Configuration bits on POR

R = Readable bit

W = Writable bit

U = Unimplemented bit, read as ‘0’

-n = Value at POR

‘1’ = Bit is set

‘0’ = Bit is cleared

x = Bit is unknown

bit 31-16 Unimplemented: Read as ‘0’
bit 15

ON: Watchdog Timer Enable bit(1,2)
1 = Enables the WDT if it is not enabled by the device configuration
0 = Disable the WDT if it was enabled in software

bit 14-7

Unimplemented: Read as ‘0’

bit 6-2

SWDTPS<4:0>: Shadow Copy of Watchdog Timer Postscaler Value from Device Configuration bits
On reset, these bits are set to the values of the WDTPS <4:0> of Configuration bits.

bit 1

WDTWINEN: Watchdog Timer Window Enable bit
1 = Enable windowed Watchdog Timer
0 = Disable windowed Watchdog Timer

bit 0

WDTCLR: Watchdog Timer Reset bit
1 = Writing a ‘1’ will clear the WDT
0 = Software cannot force this bit to a ‘0’

Note 1:
2:

A read of this bit results in a ‘1’ if the Watchdog Timer is enabled by the device configuration or software.
When using the 1:1 PBCLK divisor, the user’s software should not read or write the peripheral’s SFRs in
the SYSCLK cycle immediately following the instruction that clears the module’s ON bit.

 2011-2018 Microchip Technology Inc.

DS60001168K-page 157

PIC32MX1XX/2XX 28/36/44-PIN FAMILY
NOTES:

DS60001168K-page 158

 2011-2018 Microchip Technology Inc.

PIC32MX1XX/2XX 28/36/44-PIN FAMILY
15.0
Note:

• Prescaler capture event modes:
- Capture timer value on every 4th rising edge of
input at ICx pin
- Capture timer value on every 16th rising edge of
input at ICx pin

INPUT CAPTURE
This data sheet summarizes the features
of the PIC32MX1XX/2XX 28/36/44-pin
Family of devices. It is not intended to be
a comprehensive reference source. To
complement the information in this data
sheet, refer to Section 15. “Input Capture” (DS60001122), which is available
from the Documentation > Reference
Manual section of the Microchip PIC32
web site (www.microchip.com/pic32).

Each input capture channel can select between one of
two 16-bit timers (Timer2 or Timer3) for the time base,
or two 16-bit timers (Timer2 and Timer3) together to
form a 32-bit timer. The selected timer can use either
an internal or external clock.
Other operational features include:
• Device wake-up from capture pin during Sleep
and Idle modes
• Interrupt on input capture event
• 4-word FIFO buffer for capture values (interrupt
optionally generated after 1, 2, 3, or 4 buffer
locations are filled)
• Input capture can also be used to provide
additional sources of external interrupts

The Input Capture module is useful in applications
requiring frequency (period) and pulse measurement.
The Input Capture module captures the 16-bit or 32-bit
value of the selected Time Base registers when an
event occurs at the ICx pin. The following events cause
capture events:
• Simple capture event modes:
- Capture timer value on every rising and falling
edge of input at ICx pin
- Capture timer value on every edge (rising
and falling)
- Capture timer value on every edge (rising
and falling), specified edge first.

FIGURE 15-1:

Figure 15-1 illustrates a general block diagram of the
Input Capture module.

INPUT CAPTURE BLOCK DIAGRAM
FEDGE
Specified/Every
Edge Mode

ICM<2:0>

110

Prescaler Mode
(16th Rising Edge)

101

Prescaler Mode
(4th Rising Edge)

100

Rising Edge Mode

011

TMR2 TMR3
C32 || ICTMR

Capture Event
ICx pin

To CPU

FIFO CONTROL

ICxBUF
Falling Edge Mode

FIFO

010

ICI<1:0>
Edge Detection
Mode

001

ICM<2:0>

Set Flag ICxIF
(In IFSx Register)

/N
Sleep/Idle
Wake-up Mode

001
111

Note: An ‘x’ in a signal, register or bit name denotes the number of the capture channel.

 2011-2018 Microchip Technology Inc.

DS60001168K-page 159

Input Capture Control Registers

Virtual Address
(BF80_#)

TABLE 15-1:

IC1BUF

31/15

30/14

31:16

—

15:0

ON

31:16
15:0

2210

31:16
15:0

2400 IC3CON(1)

31:16
15:0

2410

31:16
15:0

IC3BUF

2600 IC4CON(1)

31:16
15:0

2610

31:16
15:0

IC4BUF

2800 IC5CON(1)

31:16
15:0

2810

31:16
15:0

IC5BUF

Legend:
Note 1:

28/12

27/11

26/10

25/9

—

—

—

—

—

—

—

SIDL

—

—

—

FEDGE

31:16
15:0

2200 IC2CON(1)
IC2BUF

29/13

24/8

23/7

22/6

21/5

—

—

—

—

C32

ICTMR

ICI<1:0>

20/4

19/3

18/2

—

—

—

ICOV

ICBNE

17/1

16/0

—

—

ICM<2:0>

—
—

—
SIDL

—
—

—
—

—
—

—
FEDGE

—
C32

—
ICTMR

xxxx
xxxx
—

—
ICI<1:0>

—
ICOV

—
ICBNE

—

—
ICM<2:0>

—

—
—

—
SIDL

—
—

—
—

—
—

—
FEDGE

—
C32

—
ICTMR

—

—
ICI<1:0>

—
ICOV

—
ICBNE

—

—
ICM<2:0>

—

—
—

—
SIDL

—
—

—
—

—
—

—
FEDGE

—
C32

—
ICTMR

—

—
ICI<1:0>

—
ICOV

—
ICBNE

—

—
ICM<2:0>

—

—
—

—
SIDL

—
—

—
—

—
—

—
FEDGE

—
C32

—
ICTMR

IC5BUF<31:0>

0000
0000
xxxx
xxxx

IC4BUF<31:0>
—
ON

0000
0000
xxxx
xxxx

IC3BUF<31:0>
—
ON

0000
0000
xxxx
xxxx

IC2BUF<31:0>
—
ON

0000
0000

IC1BUF<31:0>
—
ON

All Resets

Bit Range

Register
Name

Bits

2000 IC1CON(1)
2010

INPUT CAPTURE 1-INPUT CAPTURE 5 REGISTER MAP

—

—
ICI<1:0>

—
ICOV

—
ICBNE

—

—
ICM<2:0>

—

0000
0000
xxxx
xxxx

x = unknown value on Reset; — = unimplemented, read as ‘0’. Reset values are shown in hexadecimal.
This register has corresponding CLR, SET and INV registers at its virtual address, plus an offset of 0x4, 0x8 and 0xC, respectively. See Section 11.2 “CLR, SET and INV Registers” for more information.

 2011-2018 Microchip Technology Inc.

PIC32MX1XX/2XX 28/36/44-PIN FAMILY

DS60001168K-page 160

15.1

PIC32MX1XX/2XX 28/36/44-PIN FAMILY
REGISTER 15-1:
Bit Range

Bit
31/23/15/7

Bit
30/22/14/6

U-0

U-0

U-0

U-0

U-0

—

—

—

—

—

U-0

U-0

U-0

U-0

—

—

—

—

R/W-0
(1)

U-0

R/W-0

—

SIDL

R/W-0

R/W-0

31:24
23:16
15:8
7:0

ICXCON: INPUT CAPTURE ‘x’ CONTROL REGISTER

ON

ICTMR

Bit
Bit
Bit
Bit
29/21/13/5 28/20/12/4 27/19/11/3 26/18/10/2

Bit
25/17/9/1

Bit
24/16/8/0

U-0

U-0

U-0

—

—

—

U-0

U-0

U-0

U-0

—

—

—

—

U-0

U-0

U-0

R/W-0

R/W-0

—

—

—

FEDGE

C32

R-0

R-0

R/W-0

R/W-0

R/W-0

ICOV

ICBNE

R/W-0

ICI<1:0>

ICM<2:0>

Legend:
R = Readable bit

W = Writable bit

-n = Bit Value at POR: (‘0’, ‘1’, x = unknown)

U = Unimplemented bit
P = Programmable bit

r = Reserved bit

bit 31-16

Unimplemented: Read as ‘0’

bit 15

ON: Input Capture Module Enable bit(1)
1 = Module is enabled
0 = Disable and reset module, disable clocks, disable interrupt generation and allow SFR modifications

bit 14

Unimplemented: Read as ‘0’

bit 13

SIDL: Stop in Idle Control bit
1 = Halt in Idle mode
0 = Continue to operate in Idle mode

bit 12-10

Unimplemented: Read as ‘0’

bit 9

FEDGE: First Capture Edge Select bit (only used in mode 6, ICM<2:0> = 110)
1 = Capture rising edge first
0 = Capture falling edge first

bit 8

C32: 32-bit Capture Select bit
1 = 32-bit timer resource capture
0 = 16-bit timer resource capture

bit 7

ICTMR: Timer Select bit (Does not affect timer selection when C32 (ICxCON<8>) is ‘1’)
0 = Timer3 is the counter source for capture
1 = Timer2 is the counter source for capture

bit 6-5

ICI<1:0>: Interrupt Control bits
11 = Interrupt on every fourth capture event
10 = Interrupt on every third capture event
01 = Interrupt on every second capture event
00 = Interrupt on every capture event

bit 4

ICOV: Input Capture Overflow Status Flag bit (read-only)
1 = Input capture overflow has occurred
0 = No input capture overflow has occurred

bit 3

ICBNE: Input Capture Buffer Not Empty Status bit (read-only)
1 = Input capture buffer is not empty; at least one more capture value can be read
0 = Input capture buffer is empty

Note 1:

When using 1:1 PBCLK divisor, the user’s software should not read/write the peripheral’s SFRs in the
SYSCLK cycle immediately following the instruction that clears the module’s ON bit.

 2011-2018 Microchip Technology Inc.

DS60001168K-page 161

PIC32MX1XX/2XX 28/36/44-PIN FAMILY
REGISTER 15-1:
bit 2-0

Note 1:

ICXCON: INPUT CAPTURE ‘x’ CONTROL REGISTER (CONTINUED)

ICM<2:0>: Input Capture Mode Select bits
111 = Interrupt-Only mode (only supported while in Sleep mode or Idle mode)
110 = Simple Capture Event mode – every edge, specified edge first and every edge thereafter
101 = Prescaled Capture Event mode – every sixteenth rising edge
100 = Prescaled Capture Event mode – every fourth rising edge
011 = Simple Capture Event mode – every rising edge
010 = Simple Capture Event mode – every falling edge
001 = Edge Detect mode – every edge (rising and falling)
000 = Input Capture module is disabled
When using 1:1 PBCLK divisor, the user’s software should not read/write the peripheral’s SFRs in the
SYSCLK cycle immediately following the instruction that clears the module’s ON bit.

DS60001168K-page 162

 2011-2018 Microchip Technology Inc.

PIC32MX1XX/2XX 28/36/44-PIN FAMILY
16.0
Note:

The following are some of the key features:

OUTPUT COMPARE

• Multiple Output Compare Modules in a device
• Programmable interrupt generation on compare
event
• Single and Dual Compare modes
• Single and continuous output pulse generation
• Pulse-Width Modulation (PWM) mode
• Hardware-based PWM Fault detection and
automatic output disable
• Can operate from either of two available 16-bit
time bases or a single 32-bit time base

This data sheet summarizes the features
of the PIC32MX1XX/2XX 28/36/44-pin
Family of devices. It is not intended to be
a comprehensive reference source. To
complement the information in this data
sheet, refer to Section 16. “Output Compare” (DS60001111), which is available
from the Documentation > Reference
Manual section of the Microchip PIC32
web site (www.microchip.com/pic32).

The Output Compare module is used to generate a single pulse or a train of pulses in response to selected
time base events. For all modes of operation, the Output Compare module compares the values stored in
the OCxR and/or the OCxRS registers to the value in
the selected timer. When a match occurs, the Output
Compare module generates an event based on the
selected mode of operation.

FIGURE 16-1:

OUTPUT COMPARE MODULE BLOCK DIAGRAM
Set Flag bit
OCxIF(1)

OCxRS(1)

Output
Logic

OCxR(1)

3
OCM<2:0>
Mode Select

Comparator

0

16

Timer2

OCTSEL

1

0

S
R
Output
Enable

Q

OCx(1)
Output Enable
Logic
OCFA or OCFB(2)

1

16

Timer3

Timer2
Rollover

Timer3
Rollover

Note 1: Where ‘x’ is shown, reference is made to the registers associated with the respective output compare channels,
1 through 5.
2: The OCFA pin controls the OC1-OC4 channels. The OCFB pin controls the OC5 channel.

 2011-2018 Microchip Technology Inc.

DS60001168K-page 163

Output Compare Control Registers

Virtual Address
(BF80_#)

TABLE 16-1:

OUTPUT COMPARE 1-OUTPUT COMPARE 5 REGISTER MAP

3000 OC1CON

31:16
15:0

31/15

30/14

29/13

28/12

27/11

26/10

25/9

24/8

23/7

22/6

21/5

20/4

19/3

18/2

17/1

16/0

—
ON

—
—

—
SIDL

—
—

—
—

—
—

—
—

—
—

—
—

—
—

—
OC32

—
OCFLT

—
OCTSEL

—

—
OCM<2:0>

—

All Resets

Bit Range

Register
Name(1)

Bits

0000
0000

3010

OC1R

31:16
15:0

OC1R<31:0>

xxxx
xxxx

3020

OC1RS

31:16
15:0

OC1RS<31:0>

xxxx
xxxx

3200 OC2CON

31:16
15:0

—
ON

—
—

—
SIDL

—
—

—
—

—
—

—
—

—
—

—
—

—
—

—
OC32

—
OCFLT

—
OCTSEL

—

—
OCM<2:0>

—

0000
0000

3210

OC2R

31:16
15:0

OC2R<31:0>

xxxx
xxxx

3220

OC2RS

31:16
15:0

OC2RS<31:0>

xxxx
xxxx

3400 OC3CON

31:16
15:0

—
ON

—
—

—
SIDL

—
—

—
—

—
—

—
—

—
—

—
—

—
—

—
OC32

—
OCFLT

—
OCTSEL

—

—
OCM<2:0>

—

0000
0000

3410

OC3R

31:16
15:0

OC3R<31:0>

xxxx
xxxx

3420

OC3RS

31:16
15:0

OC3RS<31:0>

xxxx
xxxx

3600 OC4CON

31:16
15:0

—
ON

—
—

—
SIDL

—
—

—
—

—
—

—
—

—
—

—
—

—
—

—
OC32

—
OCFLT

—
OCTSEL

—

—
OCM<2:0>

—

0000
0000

 2011-2018 Microchip Technology Inc.

3610

OC4R

31:16
15:0

OC4R<31:0>

xxxx
xxxx

3620

OC4RS

31:16
15:0

OC4RS<31:0>

xxxx
xxxx

3800 OC5CON

31:16
15:0

—
ON

—
—

—
SIDL

—
—

—
—

—
—

—
—

—
—

—
—

—
—

—
OC32

—
OCFLT

—
OCTSEL

—

—
OCM<2:0>

—

0000
0000

3810

OC5R

31:16
15:0

OC5R<31:0>

xxxx
xxxx

3820

OC5RS

31:16
15:0

OC5RS<31:0>

xxxx
xxxx

Legend:
Note 1:

x = unknown value on Reset; — = unimplemented, read as ‘0’. Reset values are shown in hexadecimal.
All registers in this table have corresponding CLR, SET and INV registers at their virtual addresses, plus offsets of 0x4, 0x8 and 0xC, respectively. See Section 11.2 “CLR, SET and INV Registers” for
more information.

PIC32MX1XX/2XX 28/36/44-PIN FAMILY

DS60001168K-page 164

16.1

PIC32MX1XX/2XX 28/36/44-PIN FAMILY
REGISTER 16-1:
Bit
Range
31:24
23:16
15:8
7:0

OCxCON: OUTPUT COMPARE ‘x’ CONTROL REGISTER

Bit
31/23/15/7

Bit
30/22/14/6

Bit
29/21/13/5

Bit
28/20/12/4

Bit
27/19/11/3

Bit
26/18/10/2

Bit
25/17/9/1

Bit
24/16/8/0

U-0

U-0

U-0

U-0

U-0

U-0

U-0

U-0

—

—

—

—

—

—

—

—

U-0

U-0

U-0

U-0

U-0

U-0

U-0

U-0

—

—

—

—

—

—

—

—

R/W-0
(1)

U-0

R/W-0

U-0

U-0

U-0

U-0

U-0

—

SIDL

—

—

—

—

—

U-0

U-0

R/W-0

R-0

R/W-0

R/W-0

R/W-0

R/W-0

—

—

OC32

OCFLT(2)

OCTSEL

ON

OCM<2:0>

Legend:
R = Readable bit

W = Writable bit

U = Unimplemented bit, read as ‘0’

-n = Value at POR

‘1’ = Bit is set

‘0’ = Bit is cleared

x = Bit is unknown

bit 31-16 Unimplemented: Read as ‘0’
bit 15

ON: Output Compare Peripheral On bit(1)
1 = Output Compare peripheral is enabled
0 = Output Compare peripheral is disabled

bit 14

Unimplemented: Read as ‘0’

bit 13

SIDL: Stop in Idle Mode bit
1 = Discontinue module operation when the device enters Idle mode
0 = Continue module operation when the device enters Idle mode

bit 12-6

Unimplemented: Read as ‘0’

bit 5

OC32: 32-bit Compare Mode bit
1 = OCxR<31:0> and/or OCxRS<31:0> are used for comparisons to the 32-bit timer source
0 = OCxR<15:0> and OCxRS<15:0> are used for comparisons to the 16-bit timer source

bit 4

OCFLT: PWM Fault Condition Status bit(2)
1 = PWM Fault condition has occurred (cleared in hardware only)
0 = No PWM Fault condition has occurred

bit 3

OCTSEL: Output Compare Timer Select bit
1 = Timer3 is the clock source for this Output Compare module
0 = Timer2 is the clock source for this Output Compare module

bit 2-0

OCM<2:0>: Output Compare Mode Select bits
111 = PWM mode on OCx; Fault pin enabled
110 = PWM mode on OCx; Fault pin disabled
101 = Initialize OCx pin low; generate continuous output pulses on OCx pin
100 = Initialize OCx pin low; generate single output pulse on OCx pin
011 = Compare event toggles OCx pin
010 = Initialize OCx pin high; compare event forces OCx pin low
001 = Initialize OCx pin low; compare event forces OCx pin high
000 = Output compare peripheral is disabled but continues to draw current

Note 1:

When using 1:1 PBCLK divisor, the user’s software should not read/write the peripheral’s SFRs in the
SYSCLK cycle immediately following the instruction that clears the module’s ON bit.
This bit is only used when OCM<2:0> = ‘111’. It is read as ‘0’ in all other modes.

2:

 2011-2018 Microchip Technology Inc.

DS60001168K-page 165

PIC32MX1XX/2XX 28/36/44-PIN FAMILY
NOTES:

DS60001168K-page 166

 2011-2018 Microchip Technology Inc.

PIC32MX1XX/2XX 28/36/44-PIN FAMILY
17.0
Note:

Some of the key features of the SPI module are:

SERIAL PERIPHERAL
INTERFACE (SPI)

•
•
•
•
•

Master mode and Slave mode support
Four clock formats
Enhanced Framed SPI protocol support
User-configurable 8-bit, 16-bit and 32-bit data width
Separate SPI FIFO buffers for receive and transmit
- FIFO buffers act as 4/8/16-level deep FIFOs
based on 32/16/8-bit data width
• Programmable interrupt event on every 8-bit,
16-bit and 32-bit data transfer
• Operation during Sleep and Idle modes
• Audio Codec Support:
- I2S protocol
- Left-justified
- Right-justified
- PCM

This data sheet summarizes the features
of the PIC32MX1XX/2XX 28/36/44-pin
Family of devices. It is not intended to be
a comprehensive reference source. To
complement the information in this data
sheet, refer to Section 23. “Serial
Peripheral
Interface
(SPI)”
(DS60001106), which is available from the
Documentation > Reference Manual
section of the Microchip PIC32 web site
(www.microchip.com/pic32).

The SPI module is a synchronous serial interface that
is useful for communicating with external peripherals
and other microcontrollers. These peripheral devices
may be Serial EEPROMs, Shift registers, display drivers, Analog-to-Digital Converters (ADC), etc. The
PIC32 SPI module is compatible with Motorola® SPI
and SIOP interfaces.

FIGURE 17-1:

SPI MODULE BLOCK DIAGRAM
Internal
Data Bus

SPIxBUF
Read

Write

SPIxRXB FIFO

FIFOs Share Address SPIxBUF

SPIxTXB FIFO

Transmit

Receive
SPIxSR
SDIx

bit 0

SDOx

SSx/FSYNC

Slave Select
and Frame
Sync Control

Shift
Control
Clock
Control

MCLKSEL
Edge
Select

SCKx
Note: Access SPIxTXB and SPIxRXB FIFOs via SPIxBUF register.

 2011-2018 Microchip Technology Inc.

1

REFCLK

0

PBCLK

Baud Rate
Generator
MSTEN

DS60001168K-page 167

SPI Control Registers
SPI1 AND SPI2 REGISTER MAP

5800 SPI1CON
5810 SPI1STAT
5820 SPI1BUF
5830 SPI1BRG

31:16

FRMEN

15:0

ON

31:16
15:0

5A00 SPI2CON
5A10 SPI2STAT
5A20 SPI2BUF
5A30 SPI2BRG
5A40 SPI2CON2

 2011-2018 Microchip Technology Inc.

Legend:
Note 1:

30/14

29/13

FRMSYNC FRMPOL

28/12

27/11

MSSEN

FRMSYPW

26/10

25/9

24/8

DISSDO

—

SIDL
—

MODE32 MODE16
SMP
RXBUFELM<4:0>

—

—

—

FRMERR

SPIBUSY

—

—

23/7

22/6

21/5

20/4

MCLKSEL

—

—

—

CKE

SSEN
—

CKP
—

MSTEN
—

DISSDI

SPITUR

SRMT

SPIROV

SPIRBE

—

FRMCNT<2:0>

—
—

31:16

19/3

18/2

17/1

—

—

SPIFE

16/0

ENHBUF 0000

STXISEL<1:0>
SRXISEL<1:0>
TXBUFELM<4:0>
SPITBE

—

SPITBF

31:16

—

—

—

—

—

—

—

—

—

15:0

—
—

—
—

—
—

—

—

—

—

—

—

15:0

SPI
SGNEXT

—

—

FRM
ERREN

SPI
ROVEN

SPI
TUREN

IGNROV

IGNTUR

AUDEN

31:16

FRMEN

MSSEN

FRMSYPW

15:0

ON

31:16
15:0

FRMSYNC FRMPOL

0000

DISSDO

—

SIDL
—

MODE32 MODE16
SMP
RXBUFELM<4:0>

—

—

—

FRMERR

SPIBUSY

—

—

31:16

—
BRG<12:0>
—
—

—

—

—

—

—

—

0000
0000

—

—

—

—

—

—

0000
0000

—

—

AUD
MONO

—

—

—

AUDMOD<1:0>

MCLKSEL

—

—

—

CKE

SSEN
—

CKP
—

MSTEN
—

DISSDI

SPITUR

SRMT

SPIROV

SPIRBE

—

SPITBE

—

SPITBF

—

—

—

—

—

—

FRMCNT<2:0>

—
—

SPIFE

31:16

—

—

—

15:0
31:16

—
—

—
—

—
—

15:0

SPI
SGNEXT

—

—

—

—

—

—

—

—

FRM
ERREN

SPI
ROVEN

SPI
TUREN

—
—
IGNROV

—
—
IGNTUR

—
—
AUDEN

0000

ENHBUF 0000

STXISEL<1:0>
SRXISEL<1:0>
TXBUFELM<4:0>

DATA<31:0>

15:0

0000
0000

SPIRBF 0008

DATA<31:0>

15:0

31:16
5840 SPI1CON2

31/15

All Resets

Bit Range

Bits
Register
Name(1)

Virtual Address
(BF80_#)

TABLE 17-1:

0000
0000

SPIRBF 0008
0000
0000

BRG<12:0>
—
—

—
—

—

—

—

—

AUD
MONO

—

—

—

0000

—

0000
0000

AUDMOD<1:0>

0000

x = unknown value on Reset; — = unimplemented, read as ‘0’. Reset values are shown in hexadecimal.
All registers in this table except SPIxBUF have corresponding CLR, SET and INV registers at their virtual addresses, plus offsets of 0x4, 0x8 and 0xC, respectively. See Section 11.2 “CLR, SET and INV
Registers” for more information.

PIC32MX1XX/2XX 28/36/44-PIN FAMILY

DS60001168K-page 168

17.1

PIC32MX1XX/2XX 28/36/44-PIN FAMILY
REGISTER 17-1:
Bit
Range
31:24
23:16
15:8
7:0

SPIxCON: SPI CONTROL REGISTER

Bit
31/23/15/7

Bit
30/22/14/6

Bit
29/21/13/5

Bit
28/20/12/4

Bit
27/19/11/3

Bit
26/18/10/2
R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

FRMEN

FRMSYNC

FRMPOL

MSSEN

FRMSYPW

Bit
25/17/9/1

Bit
24/16/8/0

R/W-0

R/W-0

FRMCNT<2:0>

R/W-0

U-0

U-0

U-0

U-0

U-0

R/W-0

R/W-0

MCLKSEL(2)

—

—

—

—

—

SPIFE

ENHBUF(2)

R/W-0

U-0

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

ON(1)

—

SIDL

DISSDO

MODE32

MODE16

SMP

CKE(3)

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

SSEN

CKP(4)

MSTEN

DISSDI

Legend:
R = Readable bit
-n = Value at POR

W = Writable bit
‘1’ = Bit is set

STXISEL<1:0>

SRXISEL<1:0>

U = Unimplemented bit, read as ‘0’
‘0’ = Bit is cleared
x = Bit is unknown

bit 31

FRMEN: Framed SPI Support bit
1 = Framed SPI support is enabled (SSx pin used as FSYNC input/output)
0 = Framed SPI support is disabled
bit 30
FRMSYNC: Frame Sync Pulse Direction Control on SSx pin bit (Framed SPI mode only)
1 = Frame sync pulse input (Slave mode)
0 = Frame sync pulse output (Master mode)
bit 29
FRMPOL: Frame Sync Polarity bit (Framed SPI mode only)
1 = Frame pulse is active-high
0 = Frame pulse is active-low
bit 28
MSSEN: Master Mode Slave Select Enable bit
1 = Slave select SPI support enabled. The SS pin is automatically driven during transmission in
Master mode. Polarity is determined by the FRMPOL bit.
0 = Slave select SPI support is disabled.
bit 27
FRMSYPW: Frame Sync Pulse Width bit
1 = Frame sync pulse is one character wide
0 = Frame sync pulse is one clock wide
bit 26-24 FRMCNT<2:0>: Frame Sync Pulse Counter bits. Controls the number of data characters transmitted per
pulse. This bit is only valid in FRAMED_SYNC mode.
111 = Reserved; do not use
110 = Reserved; do not use
101 = Generate a frame sync pulse on every 32 data characters
100 = Generate a frame sync pulse on every 16 data characters
011 = Generate a frame sync pulse on every 8 data characters
010 = Generate a frame sync pulse on every 4 data characters
001 = Generate a frame sync pulse on every 2 data characters
000 = Generate a frame sync pulse on every data character
bit 23
MCLKSEL: Master Clock Enable bit(2)
1 = REFCLK is used by the Baud Rate Generator
0 = PBCLK is used by the Baud Rate Generator
bit 22-18 Unimplemented: Read as ‘0’
Note 1:
2:
3:
4:

When using the 1:1 PBCLK divisor, the user’s software should not read or write the peripheral’s SFRs in
the SYSCLK cycle immediately following the instruction that clears the module’s ON bit.
This bit can only be written when the ON bit = 0.
This bit is not used in the Framed SPI mode. The user should program this bit to ‘0’ for the Framed SPI
mode (FRMEN = 1).
When AUDEN = 1, the SPI module functions as if the CKP bit is equal to ‘1’, regardless of the actual value
of CKP.

 2011-2018 Microchip Technology Inc.

DS60001168K-page 169

PIC32MX1XX/2XX 28/36/44-PIN FAMILY
REGISTER 17-1:

SPIxCON: SPI CONTROL REGISTER (CONTINUED)

bit 17

SPIFE: Frame Sync Pulse Edge Select bit (Framed SPI mode only)
1 = Frame synchronization pulse coincides with the first bit clock
0 = Frame synchronization pulse precedes the first bit clock
bit 16
ENHBUF: Enhanced Buffer Enable bit(2)
1 = Enhanced Buffer mode is enabled
0 = Enhanced Buffer mode is disabled
bit 15
ON: SPI Peripheral On bit(1)
1 = SPI Peripheral is enabled
0 = SPI Peripheral is disabled
bit 14
Unimplemented: Read as ‘0’
bit 13
SIDL: Stop in Idle Mode bit
1 = Discontinue module operation when the device enters Idle mode
0 = Continue module operation when the device enters Idle mode
bit 12
DISSDO: Disable SDOx pin bit
1 = SDOx pin is not used by the module. Pin is controlled by associated PORT register
0 = SDOx pin is controlled by the module
bit 11-10 MODE<32,16>: 32/16-Bit Communication Select bits
When AUDEN = 1:
MODE32
MODE16
Communication
1
1
24-bit Data, 32-bit FIFO, 32-bit Channel/64-bit Frame
1
0
32-bit Data, 32-bit FIFO, 32-bit Channel/64-bit Frame
0
1
16-bit Data, 16-bit FIFO, 32-bit Channel/64-bit Frame
0
0
16-bit Data, 16-bit FIFO, 16-bit Channel/32-bit Frame
When AUDEN = 0:
MODE32
MODE16
Communication
1
x
32-bit
0
1
16-bit
0
0
8-bit
SMP: SPI Data Input Sample Phase bit
Master mode (MSTEN = 1):
1 = Input data sampled at end of data output time
0 = Input data sampled at middle of data output time
Slave mode (MSTEN = 0):
SMP value is ignored when SPI is used in Slave mode. The module always uses SMP = 0.

bit 9

To write a '1' to this bit, the MSTEN value = 1 must first be written.
CKE: SPI Clock Edge Select bit(3)
1 = Serial output data changes on transition from active clock state to Idle clock state (see the CKP bit)
0 = Serial output data changes on transition from Idle clock state to active clock state (see the CKP bit)
SSEN: Slave Select Enable (Slave mode) bit
1 = SSx pin used for Slave mode
0 = SSx pin not used for Slave mode, pin controlled by port function.
CKP: Clock Polarity Select bit(4)
1 = Idle state for clock is a high level; active state is a low level
0 = Idle state for clock is a low level; active state is a high level

bit 8

bit 7

bit 6

Note 1:
2:
3:
4:

When using the 1:1 PBCLK divisor, the user’s software should not read or write the peripheral’s SFRs in
the SYSCLK cycle immediately following the instruction that clears the module’s ON bit.
This bit can only be written when the ON bit = 0.
This bit is not used in the Framed SPI mode. The user should program this bit to ‘0’ for the Framed SPI
mode (FRMEN = 1).
When AUDEN = 1, the SPI module functions as if the CKP bit is equal to ‘1’, regardless of the actual value
of CKP.

DS60001168K-page 170

 2011-2018 Microchip Technology Inc.

PIC32MX1XX/2XX 28/36/44-PIN FAMILY
REGISTER 17-1:
bit 5

SPIxCON: SPI CONTROL REGISTER (CONTINUED)

MSTEN: Master Mode Enable bit
1 = Master mode
0 = Slave mode
DISSDI: Disable SDI bit
1 = SDI pin is not used by the SPI module (pin is controlled by PORT function)
0 = SDI pin is controlled by the SPI module
STXISEL<1:0>: SPI Transmit Buffer Empty Interrupt Mode bits
11 = Interrupt is generated when the buffer is not full (has one or more empty elements)
10 = Interrupt is generated when the buffer is empty by one-half or more
01 = Interrupt is generated when the buffer is completely empty
00 = Interrupt is generated when the last transfer is shifted out of SPISR and transmit operations are
complete
SRXISEL<1:0>: SPI Receive Buffer Full Interrupt Mode bits
11 = Interrupt is generated when the buffer is full
10 = Interrupt is generated when the buffer is full by one-half or more
01 = Interrupt is generated when the buffer is not empty
00 = Interrupt is generated when the last word in the receive buffer is read (i.e., buffer is empty)

bit 4

bit 3-2

bit 1-0

Note 1:
2:
3:
4:

When using the 1:1 PBCLK divisor, the user’s software should not read or write the peripheral’s SFRs in
the SYSCLK cycle immediately following the instruction that clears the module’s ON bit.
This bit can only be written when the ON bit = 0.
This bit is not used in the Framed SPI mode. The user should program this bit to ‘0’ for the Framed SPI
mode (FRMEN = 1).
When AUDEN = 1, the SPI module functions as if the CKP bit is equal to ‘1’, regardless of the actual value
of CKP.

 2011-2018 Microchip Technology Inc.

DS60001168K-page 171

PIC32MX1XX/2XX 28/36/44-PIN FAMILY
REGISTER 17-2:
Bit
Range
31:24
23:16
15:8
7:0

SPIxCON2: SPI CONTROL REGISTER 2

Bit
31/23/15/7

Bit
Bit
30/22/14/6 29/21/13/5

Bit
28/20/12/4

Bit
27/19/11/3

Bit
Bit
Bit
26/18/10/2 25/17/9/1 24/16/8/0

U-0

U-0

U-0

U-0

U-0

U-0

U-0

—

—

—

—

—

—

—

U-0

—

U-0

U-0

U-0

U-0

U-0

U-0

U-0

U-0

—

—

—

—

—

—

—

—

R/W-0

U-0

U-0

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

SPISGNEXT

—

—

FRMERREN

SPIROVEN

R/W-0

U-0

U-0

U-0

R/W-0

U-0

AUDEN(1)

—

—

—

AUDMONO(1,2)

—

Legend:
R = Readable bit
-n = Value at POR

W = Writable bit
‘1’ = Bit is set

SPITUREN IGNROV
R/W-0

IGNTUR
R/W-0

AUDMOD<1:0>(1,2)

U = Unimplemented bit, read as ‘0’
‘0’ = Bit is cleared
x = Bit is unknown

bit 31-16 Unimplemented: Read as ‘0’
bit 15
SPISGNEXT: Sign Extend Read Data from the RX FIFO bit
1 = Data from RX FIFO is sign extended
0 = Data from RX FIFO is not sign extended
bit 14-13 Unimplemented: Read as ‘0’
bit 12
FRMERREN: Enable Interrupt Events via FRMERR bit
1 = Frame Error overflow generates error events
0 = Frame Error does not generate error events
bit 11
SPIROVEN: Enable Interrupt Events via SPIROV bit
1 = Receive overflow generates error events
0 = Receive overflow does not generate error events
bit 10
SPITUREN: Enable Interrupt Events via SPITUR bit
1 = Transmit underrun generates error events
0 = Transmit underrun does not generate error events
bit 9
IGNROV: Ignore Receive Overflow bit (for Audio Data Transmissions)
1 = A ROV is not a critical error; during ROV data in the FIFO is not overwritten by receive data
0 = A ROV is a critical error that stops SPI operation
bit 8
IGNTUR: Ignore Transmit Underrun bit (for Audio Data Transmissions)
1 = A TUR is not a critical error and zeros are transmitted until the SPIxTXB is not empty
0 = A TUR is a critical error that stops SPI operation
bit 7
AUDEN: Enable Audio CODEC Support bit(1)
1 = Audio protocol enabled
0 = Audio protocol disabled
bit 6-5
Unimplemented: Read as ‘0’
bit 3
AUDMONO: Transmit Audio Data Format bit(1,2)
1 = Audio data is mono (Each data word is transmitted on both left and right channels)
0 = Audio data is stereo
bit 2
Unimplemented: Read as ‘0’
bit 1-0
AUDMOD<1:0>: Audio Protocol Mode bit(1,2)
11 = PCM/DSP mode
10 = Right-Justified mode
01 = Left-Justified mode
00 = I2S mode
Note 1:
2:

This bit can only be written when the ON bit = 0.
This bit is only valid for AUDEN = 1.

DS60001168K-page 172

 2011-2018 Microchip Technology Inc.

PIC32MX1XX/2XX 28/36/44-PIN FAMILY
REGISTER 17-3:
Bit
Range
31:24
23:16
15:8
7:0

SPIxSTAT: SPI STATUS REGISTER

Bit
31/23/15/7

Bit
30/22/14/6

Bit
29/21/13/5

Bit
28/20/12/4

Bit
27/19/11/3

Bit
26/18/10/2

Bit
25/17/9/1

Bit
24/16/8/0

U-0

U-0

U-0

R-0

R-0

R-0

R-0

R-0

—

—

—

U-0

U-0

U-0

R-0

R-0

—

—

—

U-0

U-0

U-0

R/C-0, HS

R-0

U-0

U-0

R-0

—

—

—

FRMERR

SPIBUSY

—

—

SPITUR

RXBUFELM<4:0>
R-0

R-0

R-0

TXBUFELM<4:0>

R-0

R/W-0

R-0

U-0

R-1

U-0

R-0

R-0

SRMT

SPIROV

SPIRBE

—

SPITBE

—

SPITBF

SPIRBF

Legend:

C = Clearable bit

HS = Set in hardware

R = Readable bit

W = Writable bit

U = Unimplemented bit, read as ‘0’

-n = Value at POR

‘1’ = Bit is set

‘0’ = Bit is cleared

x = Bit is unknown

bit 31-29 Unimplemented: Read as ‘0’
bit 28-24 RXBUFELM<4:0>: Receive Buffer Element Count bits (valid only when ENHBUF = 1)
bit 23-21 Unimplemented: Read as ‘0’
bit 20-16 TXBUFELM<4:0>: Transmit Buffer Element Count bits (valid only when ENHBUF = 1)
bit 15-13 Unimplemented: Read as ‘0’
bit 12

FRMERR: SPI Frame Error status bit
1 = Frame error detected
0 = No Frame error detected
This bit is only valid when FRMEN = 1.

bit 11

SPIBUSY: SPI Activity Status bit
1 = SPI peripheral is currently busy with some transactions
0 = SPI peripheral is currently idle

bit 10-9

Unimplemented: Read as ‘0’

bit 8

SPITUR: Transmit Under Run bit
1 = Transmit buffer has encountered an underrun condition
0 = Transmit buffer has no underrun condition
This bit is only valid in Framed Sync mode; the underrun condition must be cleared by disabling (ON bit = 0)
and re-enabling (ON bit = 1) the module, or writing a ‘0’ to SPITUR.

bit 7

SRMT: Shift Register Empty bit (valid only when ENHBUF = 1)
1 = When SPI module shift register is empty
0 = When SPI module shift register is not empty

bit 6

SPIROV: Receive Overflow Flag bit
1 = A new data is completely received and discarded. The user software has not read the previous data in
the SPIxBUF register.
0 = No overflow has occurred
This bit is set in hardware; can bit only be cleared by disabling (ON bit = 0) and re-enabling (ON bit = 1) the
module, or by writing a ‘0’ to SPIROV.

bit 5

SPIRBE: RX FIFO Empty bit (valid only when ENHBUF = 1)
1 = RX FIFO is empty (CRPTR = SWPTR)
0 = RX FIFO is not empty (CRPTR SWPTR)

bit 4

Unimplemented: Read as ‘0’

 2011-2018 Microchip Technology Inc.

DS60001168K-page 173

PIC32MX1XX/2XX 28/36/44-PIN FAMILY
REGISTER 17-3:

SPIxSTAT: SPI STATUS REGISTER

bit 3

SPITBE: SPI Transmit Buffer Empty Status bit
1 = Transmit buffer, SPIxTXB is empty
0 = Transmit buffer, SPIxTXB is not empty
Automatically set in hardware when SPI transfers data from SPIxTXB to SPIxSR.
Automatically cleared in hardware when SPIxBUF is written to, loading SPIxTXB.

bit 2

Unimplemented: Read as ‘0’

bit 1

SPITBF: SPI Transmit Buffer Full Status bit
1 = Transmit not yet started, SPITXB is full
0 = Transmit buffer is not full
Standard Buffer Mode:
Automatically set in hardware when the core writes to the SPIBUF location, loading SPITXB.
Automatically cleared in hardware when the SPI module transfers data from SPITXB to SPISR.
Enhanced Buffer Mode:
Set when CWPTR + 1 = SRPTR; cleared otherwise

bit 0

SPIRBF: SPI Receive Buffer Full Status bit
1 = Receive buffer, SPIxRXB is full
0 = Receive buffer, SPIxRXB is not full
Standard Buffer Mode:
Automatically set in hardware when the SPI module transfers data from SPIxSR to SPIxRXB.
Automatically cleared in hardware when SPIxBUF is read from, reading SPIxRXB.
Enhanced Buffer Mode:
Set when SWPTR + 1 = CRPTR; cleared otherwise

DS60001168K-page 174

 2011-2018 Microchip Technology Inc.

PIC32MX1XX/2XX 28/36/44-PIN FAMILY
18.0
Note:

INTER-INTEGRATED CIRCUIT
(I2C)
This data sheet summarizes the features
of the PIC32MX1XX/2XX 28/36/44-pin
Family of devices. It is not intended to be
a comprehensive reference source. To
complement the information in this data
sheet, refer to Section 24. “InterIntegrated Circuit (I2C)” (DS60001116),
which is available from the Documentation
> Reference Manual section of the Microchip
PIC32
web
site
(www.microchip.com/pic32).

 2011-2018 Microchip Technology Inc.

The I2C module provides complete hardware support
for both Slave and Multi-Master modes of the I2C serial
communication standard. Figure 18-1 illustrates the
I2C module block diagram.
Each I2C module has a 2-pin interface: the SCLx pin is
clock and the SDAx pin is data.
Each I2C module offers the following key features:
• I2C interface supporting both master and slave
operation
• I2C Slave mode supports 7-bit and 10-bit addressing
• I2C Master mode supports 7-bit and 10-bit
addressing
• I2C port allows bidirectional transfers between
master and slaves
• Serial clock synchronization for the I2C port can
be used as a handshake mechanism to suspend
and resume serial transfer (SCLREL control)
• I2C supports multi-master operation; detects bus
collision and arbitrates accordingly
• Provides support for address bit masking

DS60001168K-page 175

PIC32MX1XX/2XX 28/36/44-PIN FAMILY
FIGURE 18-1:

I2C BLOCK DIAGRAM
Internal
Data Bus
I2CxRCV
Read

SCLx

Shift
Clock
I2CxRSR
LSB

SDAx

Address Match

Match Detect

Write
I2CxMSK
Write

Read

I2CxADD
Read
Start and Stop
bit Detect

Write

Start and Stop
bit Generation
Control Logic

I2CxSTAT

Collision
Detect

Read
Write

I2CxCON

Acknowledge
Generation

Read

Clock
Stretching

Write

I2CxTRN
LSB

Read

Shift Clock
Reload
Control

BRG Down Counter

Write
I2CxBRG
Read

PBCLK

DS60001168K-page 176

 2011-2018 Microchip Technology Inc.

I2C Control Registers

Virtual Address
(BF80_#)

TABLE 18-1:

5010 I2C1STAT
5020 I2C1ADD
5030 I2C1MSK
5040 I2C1BRG
I2C1TRN

5060 I2C1RCV
5100 I2C2CON
5110 I2C2STAT
5120 I2C2ADD
5130 I2C2MSK
5140 I2C2BRG
5150

I2C2TRN

5160 I2C2RCV

DS60001168K-page 177

Legend:
Note 1:

31/15

30/14

31:16

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

0000

15:0

ON

31:16

—

—
—

SIDL
—

SCLREL
—

STRICT
—

A10M
—

DISSLW
—

SMEN
—

GCEN
—

STREN
—

ACKDT
—

ACKEN
—

RCEN
—

PEN
—

RSEN
—

SEN
—

1000
0000

D_A
—

P
—

S
—

R_W
—

RBF
—

TBF
—

0000
0000

15:0 ACKSTAT TRSTAT

29/13

28/12

27/11

26/10

25/9

24/8

23/7

22/6

21/5

20/4

19/3

18/2

17/1

16/0

All Resets

Bit Range

Register
Name(1)

Bits

5000 I2C1CON

5050

I2C1 AND I2C2 REGISTER MAP

31:16

—

—

—
—

—
—

—
—

BCL
—

GCSTAT
—

ADD10
—

IWCOL
—

I2COV
—

15:0

—
—

—
—

—
—

—
—

—
—

—
—

—

—

—

—

Address Register
—
—

—

—

—

—

0000
0000

—
—

—
—

—
—

—
—

—
—

—
—

—

—

—

—

Address Mask Register
—
—

—

—

—

—

0000
0000

—
—

—
—

—
—

—
—

—

—

—

—

—

—

—

—

—

0000
0000

—
—

—
—

—
—

—
—

—
—

—
—

—
—

—
—

—

—

—

Transmit Register
—
—

—

—

—

0000
0000

31:16

—
—

—
—

—
—

—
—

—
—

—
—

—
—

—
—

—

—

—

Receive Register
—
—

—

—

—

0000
0000

15:0

ON

31:16

—

—
—

SIDL
—

SCLREL
—

STRICT
—

A10M
—

DISSLW
—

SMEN
—

GCEN
—

STREN
—

ACKDT
—

ACKEN
—

RCEN
—

PEN
—

RSEN
—

SEN
—

1000
0000

D_A
—

P
—

S
—

R_W
—

RBF
—

TBF
—

0000
0000

31:16
15:0
31:16
15:0
31:16
15:0
31:16
15:0

15:0 ACKSTAT TRSTAT

Baud Rate Generator Register
—
—
—

31:16

—

—

—
—

—
—

—
—

BCL
—

GCSTAT
—

ADD10
—

IWCOL
—

I2COV
—

15:0

—
—

—
—

—
—

—
—

—
—

—
—

—

—

—

—

Address Register
—
—

—

—

—

—

0000
0000

—
—

—
—

—
—

—
—

—
—

—
—

—

—

—

—

Address Mask Register
—
—

—

—

—

—

0000
0000

—
—

—
—

—
—

—
—

—

—

—

—

—

—

—

—

—

0000
0000

—
—

—
—

—
—

—
—

—
—

—
—

—
—

—
—

—

—

—

—

0000
0000

31:16
15:0
31:16
15:0
31:16
15:0
31:16

15:0
—
—
—
—
—
—
—
—
x = unknown value on Reset; — = unimplemented, read as ‘0’. Reset values are shown in hexadecimal.

Baud Rate Generator Register
—
—
—
—

—

Transmit Register
—
—
Receive Register

0000

All registers in this table except I2CxRCV have corresponding CLR, SET and INV registers at their virtual addresses, plus offsets of 0x4, 0x8 and 0xC, respectively. See Section 11.2 “CLR, SET and INV
Registers” for more information.

PIC32MX1XX/2XX 28/36/44-PIN FAMILY

 2011-2018 Microchip Technology Inc.

18.1

PIC32MX1XX/2XX 28/36/44-PIN FAMILY
REGISTER 18-1:
Bit
Range
31:24
23:16
15:8
7:0

I2CXCON: I2C CONTROL REGISTER

Bit
31/23/15/7

Bit
30/22/14/6

Bit
29/21/13/5

Bit
28/20/12/4

Bit
27/19/11/3

Bit
26/18/10/2

Bit
25/17/9/1

Bit
24/16/8/0

U-0

U-0

U-0

U-0

U-0

U-0

U-0

U-0

—

—

—

—

—

—

—

—

U-0

U-0

U-0

U-0

U-0

U-0

U-0

U-0

—

—

—

—

—

—

—

—

R/W-0
(1)

U-0

R/W-0

R/W-1, HC

R/W-0

R/W-0

R/W-0

R/W-0

—

SIDL

SCLREL

STRICT

A10M

DISSLW

SMEN

ON

R/W-0

R/W-0

R/W-0

R/W-0, HC

R/W-0, HC

R/W-0, HC

R/W-0, HC

R/W-0, HC

GCEN

STREN

ACKDT

ACKEN

RCEN

PEN

RSEN

SEN

Legend:

HC = Cleared in Hardware

R = Readable bit

W = Writable bit

U = Unimplemented bit, read as ‘0’

-n = Value at POR

‘1’ = Bit is set

‘0’ = Bit is cleared

x = Bit is unknown

bit 31-16 Unimplemented: Read as ‘0’
bit 15

ON: I2C Enable bit(1)
1 = Enables the I2C module and configures the SDA and SCL pins as serial port pins
0 = Disables the I2C module; all I2C pins are controlled by PORT functions

bit 14

Unimplemented: Read as ‘0’

bit 13

SIDL: Stop in Idle Mode bit
1 = Discontinue module operation when the device enters Idle mode
0 = Continue module operation when the device enters Idle mode

bit 12

SCLREL: SCLx Release Control bit (when operating as I2C slave)
1 = Release SCLx clock
0 = Hold SCLx clock low (clock stretch)
If STREN = 1:
Bit is R/W (i.e., software can write ‘0’ to initiate stretch and write ‘1’ to release clock). Hardware clear at
beginning of slave transmission. Hardware clear at end of slave reception.
If STREN = 0:
Bit is R/S (i.e., software can only write ‘1’ to release clock). Hardware clear at beginning of slave
transmission.

bit 11

STRICT: Strict I2C Reserved Address Rule Enable bit
1 = Strict reserved addressing is enforced. Device does not respond to reserved address space or generate
addresses in reserved address space.
0 = Strict I2C Reserved Address Rule not enabled

bit 10

A10M: 10-bit Slave Address bit
1 = I2CxADD is a 10-bit slave address
0 = I2CxADD is a 7-bit slave address

bit 9

DISSLW: Disable Slew Rate Control bit
1 = Slew rate control disabled
0 = Slew rate control enabled

bit 8

SMEN: SMBus Input Levels bit
1 = Enable I/O pin thresholds compliant with SMBus specification
0 = Disable SMBus input thresholds

Note 1:

When using 1:1 PBCLK divisor, the user’s software should not read/write the peripheral’s SFRs in the
SYSCLK cycle immediately following the instruction that clears the module’s ON bit.

DS60001168K-page 178

 2011-2018 Microchip Technology Inc.

PIC32MX1XX/2XX 28/36/44-PIN FAMILY
REGISTER 18-1:

I2CXCON: I2C CONTROL REGISTER (CONTINUED)

bit 7

GCEN: General Call Enable bit (when operating as I2C slave)
1 = Enable interrupt when a general call address is received in the I2CxRSR
(module is enabled for reception)
0 = General call address is disabled

bit 6

STREN: SCLx Clock Stretch Enable bit (when operating as I2C slave)
Used in conjunction with SCLREL bit.
1 = Enable software or receive clock stretching
0 = Disable software or receive clock stretching

bit 5

ACKDT: Acknowledge Data bit (when operating as I2C master, applicable during master receive)
Value that is transmitted when the software initiates an Acknowledge sequence.
1 = Send a NACK during an Acknowledge sequence
0 = Send an ACK during an Acknowledge sequence

bit 4

ACKEN: Acknowledge Sequence Enable bit (when operating as I2C master, applicable during master
receive)
1 = Initiate Acknowledge sequence on SDAx and SCLx pins and transmit ACKDT data bit.
Hardware clear at end of master Acknowledge sequence.
0 = Acknowledge sequence not in progress

bit 3

RCEN: Receive Enable bit (when operating as I2C master)
1 = Enables Receive mode for I2C. Hardware clear at end of eighth bit of master receive data byte.
0 = Receive sequence not in progress

bit 2

PEN: Stop Condition Enable bit (when operating as I2C master)
1 = Initiate Stop condition on SDAx and SCLx pins. Hardware clear at end of master Stop sequence.
0 = Stop condition not in progress

bit 1

RSEN: Repeated Start Condition Enable bit (when operating as I2C master)
1 = Initiate Repeated Start condition on SDAx and SCLx pins. Hardware clear at end of
master Repeated Start sequence.
0 = Repeated Start condition not in progress

bit 0

SEN: Start Condition Enable bit (when operating as I2C master)
1 = Initiate Start condition on SDAx and SCLx pins. Hardware clear at end of master Start sequence.
0 = Start condition not in progress

Note 1:

When using 1:1 PBCLK divisor, the user’s software should not read/write the peripheral’s SFRs in the
SYSCLK cycle immediately following the instruction that clears the module’s ON bit.

 2011-2018 Microchip Technology Inc.

DS60001168K-page 179

PIC32MX1XX/2XX 28/36/44-PIN FAMILY
REGISTER 18-2:
Bit
Range
31:24
23:16
15:8
7:0

I2CXSTAT: I2C STATUS REGISTER

Bit
31/23/15/7

Bit
30/22/14/6

Bit
29/21/13/5

Bit
28/20/12/4

Bit
27/19/11/3

Bit
26/18/10/2

Bit
25/17/9/1

Bit
24/16/8/0

U-0

U-0

U-0

U-0

U-0

U-0

U-0

U-0

—

—

—

—

—

—

—

—

U-0

U-0

U-0

U-0

U-0

U-0

U-0

U-0

—

—

—

—

—

—

—

—

R-0, HSC

R-0, HSC

U-0

U-0

U-0

R/C-0, HS

R-0, HSC

R-0, HSC

ACKSTAT

TRSTAT

—

—

—

BCL

GCSTAT

ADD10

R/C-0, HS

R/C-0, HS

R-0, HSC

R/C-0, HSC

R/C-0, HSC

R-0, HSC

R-0, HSC

R-0, HSC

IWCOL

I2COV

D_A

P

S

R_W

RBF

TBF

Legend:

HS = Set in hardware

HSC = Hardware set/cleared

R = Readable bit

W = Writable bit

U = Unimplemented bit, read as ‘0’

-n = Value at POR

‘1’ = Bit is set

‘0’ = Bit is cleared

C = Clearable bit

bit 31-16 Unimplemented: Read as ‘0’
bit 15

ACKSTAT: Acknowledge Status bit (when operating as I2C master, applicable to master transmit operation)
1 = Acknowledge was not received from slave
0 = Acknowledge was received from slave
Hardware set or clear at end of slave Acknowledge.

bit 14

TRSTAT: Transmit Status bit (when operating as I2C master, applicable to master transmit operation)
1 = Master transmit is in progress (8 bits + ACK)
0 = Master transmit is not in progress
Hardware set at beginning of master transmission. Hardware clear at end of slave Acknowledge.

bit 13-11 Unimplemented: Read as ‘0’
bit 10

BCL: Master Bus Collision Detect bit
1 = A bus collision has been detected during a master operation
0 = No collision
Hardware set at detection of bus collision. This condition can only be cleared by disabling (ON bit = 0) and
re-enabling (ON bit = 1) the module.

bit 9

GCSTAT: General Call Status bit
1 = General call address was received
0 = General call address was not received
Hardware set when address matches general call address. Hardware clear at Stop detection.

bit 8

ADD10: 10-bit Address Status bit
1 = 10-bit address was matched
0 = 10-bit address was not matched
Hardware set at match of 2nd byte of matched 10-bit address. Hardware clear at Stop detection.

bit 7

IWCOL: Write Collision Detect bit
1 = An attempt to write the I2CxTRN register failed because the I2C module is busy
0 = No collision
Hardware set at occurrence of write to I2CxTRN while busy (cleared by software).

bit 6

I2COV: Receive Overflow Flag bit
1 = A byte was received while the I2CxRCV register is still holding the previous byte
0 = No overflow
Hardware set at attempt to transfer I2CxRSR to I2CxRCV (cleared by software).

bit 5

D_A: Data/Address bit (when operating as I2C slave)
1 = Indicates that the last byte received was data
0 = Indicates that the last byte received was device address
Hardware clear at device address match. Hardware set by reception of slave byte.

DS60001168K-page 180

 2011-2018 Microchip Technology Inc.

PIC32MX1XX/2XX 28/36/44-PIN FAMILY
REGISTER 18-2:

I2CXSTAT: I2C STATUS REGISTER (CONTINUED)

bit 4

P: Stop bit
1 = Indicates that a Stop bit has been detected last
0 = Stop bit was not detected last
Hardware set or clear when Start, Repeated Start or Stop detected.

bit 3

S: Start bit
1 = Indicates that a Start (or Repeated Start) bit has been detected last
0 = Start bit was not detected last
Hardware set or clear when Start, Repeated Start or Stop detected.

bit 2

R_W: Read/Write Information bit (when operating as I2C slave)
1 = Read – indicates data transfer is output from slave
0 = Write – indicates data transfer is input to slave
Hardware set or clear after reception of I 2C device address byte.

bit 1

RBF: Receive Buffer Full Status bit
1 = Receive complete, I2CxRCV is full
0 = Receive not complete, I2CxRCV is empty
Hardware set when I2CxRCV is written with received byte. Hardware clear when software
reads I2CxRCV.

bit 0

TBF: Transmit Buffer Full Status bit
1 = Transmit in progress, I2CxTRN is full
0 = Transmit complete, I2CxTRN is empty
Hardware set when software writes I2CxTRN. Hardware clear at completion of data transmission.

 2011-2018 Microchip Technology Inc.

DS60001168K-page 181

PIC32MX1XX/2XX 28/36/44-PIN FAMILY
NOTES:

DS60001168K-page 182

 2011-2018 Microchip Technology Inc.

PIC32MX1XX/2XX 28/36/44-PIN FAMILY
19.0

UNIVERSAL ASYNCHRONOUS
RECEIVER TRANSMITTER
(UART)

Note:

This data sheet summarizes the features
of the PIC32MX1XX/2XX 28/36/44-pin
Family of devices. It is not intended to be
a comprehensive reference source. To
complement the information in this data
sheet, refer to Section 21. “Universal
Asynchronous Receiver Transmitter
(UART)” (DS60001107), which is available from the Documentation > Reference
Manual section of the Microchip PIC32
web site (www.microchip.com/pic32).

The UART module is one of the serial I/O modules
available in PIC32MX1XX/2XX 28/36/44-pin Family
devices. The UART is a full-duplex, asynchronous
communication channel that communicates with
peripheral devices and personal computers through
protocols, such as RS-232, RS-485, LIN, and IrDA®.
The UART module also supports the hardware flow
control option, with UxCTS and UxRTS pins, and also
includes an IrDA encoder and decoder.

FIGURE 19-1:

Key features of the UART module include:
•
•
•
•
•
•
•
•
•
•
•
•
•

Full-duplex, 8-bit or 9-bit data transmission
Even, Odd or No Parity options (for 8-bit data)
One or two Stop bits
Hardware auto-baud feature
Hardware flow control option
Fully integrated Baud Rate Generator (BRG) with
16-bit prescaler
Baud rates ranging from 38 bps to 12.5 Mbps at
50 MHz
8-level deep First In First Out (FIFO) transmit data
buffer
8-level deep FIFO receive data buffer
Parity, framing and buffer overrun error detection
Support for interrupt-only on address detect
(9th bit = 1)
Separate transmit and receive interrupts
Loopback mode for diagnostic support

• LIN protocol support
• IrDA encoder and decoder with 16x baud clock
output for external IrDA encoder/decoder support
Figure 19-1 illustrates a simplified block diagram of the
UART module.

UART SIMPLIFIED BLOCK DIAGRAM

Baud Rate Generator

IrDA®

Hardware Flow Control

Note:

UxRTS/BCLKx
UxCTS

UARTx Receiver

UxRX

UARTx Transmitter

UxTX

Not all pins are available for all UART modules. Refer to the device-specific pin diagram for more information.

 2011-2018 Microchip Technology Inc.

DS60001168K-page 183

UART Control Registers

Virtual Address
(BF80_#)

TABLE 19-1:

U1STA(1)

6020 U1TXREG
6030 U1RXREG
6040

U1BRG(1)

6200 U2MODE(1)
6210

U2STA(1)

6220 U2TXREG
6230 U2RXREG
6240

U2BRG(1)

31/15

30/14

31:16

—

—

—

15:0

ON

31:16

—

—
—

SIDL
—

15:0
31:16
15:0
31:16
15:0
31:16

UTXISEL<1:0>

29/13

28/12

27/11

26/10

25/9

24/8

—

—

—

—

—

IREN
—

RTSMD
—

—
—

UEN<1:0>
—
ADM_EN

18/2

17/1

—

—

—

—

—

—

—

WAKE

LPBACK

ABAUD

RXINV
BRGH
ADDR<7:0>

URXISEL<1:0>

PDSEL<1:0>

16/0

—

0000

STSEL

0000
0000

URXEN

UTXBRK

UTXEN

UTXBF

TRMT

ADDEN

RIDLE

PERR

FERR

OERR

URXDA

0110

—

—

—

—

—

—

—

—

—

—

—

—

—

0000

—
—

—
—

—
—

—
—

—
—

—
—

—
—

—

—

—

—

Transmit Register
—
—

—

—

—

0000
0000

—
—

—
—

—
—

—
—

—
—

—
—

—
—

—

—

—

—

Receive Register
—
—

—

—

—

0000
0000

—

—

—

—

—

—

0000

WAKE

LPBACK

ABAUD

RXINV
BRGH
ADDR<7:0>

STSEL

0000
0000

Baud Rate Generator Prescaler
—

—

—

—

—

ON

31:16

—

—
—

SIDL
—

IREN
—

RTSMD
—

—
—

UEN<1:0>
—
ADM_EN

15:0

19/3

—

—

31:16

20/4

UTXINV

—

15:0

21/5

—

15:0

31:16

22/6

—

31:16
15:0
15:0
31:16

23/7

All Resets

Bit Range

Register
Name

Bits

6000 U1MODE(1)
6010

UART1 AND UART2 REGISTER MAP

UTXISEL<1:0>

—

0000

URXISEL<1:0>

—

—

PDSEL<1:0>

UTXINV

URXEN

UTXBRK

UTXEN

UTXBF

TRMT

ADDEN

RIDLE

PERR

FERR

OERR

URXDA

0110

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

0000

—
—

—
—

—
—

—
—

—
—

—
—

—
—

—

—

—

—

Transmit Register
—
—

—

—

—

0000
0000

—
—

—
—

—
—

—
—

—
—

—
—

—
—

—

—

—

—

Receive Register
—
—

—

—

—

0000
0000

Legend:

15:0
Baud Rate Generator Prescaler
x = unknown value on Reset; — = unimplemented, read as ‘0’. Reset values are shown in hexadecimal.

Note 1:

This register has corresponding CLR, SET and INV registers at its virtual address, plus an offset of 0x4, 0x8 and 0xC, respectively. See Section 11.2 “CLR, SET and INV Registers” for more information.

0000

 2011-2018 Microchip Technology Inc.

PIC32MX1XX/2XX 28/36/44-PIN FAMILY

DS60001168K-page 184

19.1

PIC32MX1XX/2XX 28/36/44-PIN FAMILY
REGISTER 19-1:
Bit
Range
31:24
23:16
15:8
7:0

UxMODE: UARTx MODE REGISTER

Bit
31/23/15/7

Bit
30/22/14/6

Bit
29/21/13/5

Bit
28/20/12/4

Bit
27/19/11/3

Bit
26/18/10/2

Bit
25/17/9/1

Bit
24/16/8/0

U-0

U-0

U-0

U-0

U-0

U-0

U-0

U-0

—

—

—

—

—

—

—

—

U-0

U-0

U-0

U-0

U-0

U-0

U-0

U-0

—

—

—

—

—

—

—

—

R/W-0
(1)

U-0

R/W-0

R/W-0

R/W-0

U-0

R/W-0

R/W-0

—

SIDL

IREN

RTSMD

—
R/W-0

ON

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

WAKE

LPBACK

ABAUD

RXINV

BRGH

UEN<1:0>
R/W-0

PDSEL<1:0>

R/W-0

STSEL

Legend:
R = Readable bit

W = Writable bit

U = Unimplemented bit, read as ‘0’

-n = Value at POR

‘1’ = Bit is set

‘0’ = Bit is cleared

x = Bit is unknown

bit 31-16 Unimplemented: Read as ‘0’
bit 15

ON: UARTx Enable bit(1)
1 = UARTx is enabled. UARTx pins are controlled by UARTx as defined by the UEN<1:0> and UTXEN
control bits.
0 = UARTx is disabled. All UARTx pins are controlled by corresponding bits in the PORTx, TRISx and LATx
registers; UARTx power consumption is minimal.

bit 14

Unimplemented: Read as ‘0’

bit 13

SIDL: Stop in Idle Mode bit
1 = Discontinue module operation when the device enters Idle mode
0 = Continue module operation when the device enters Idle mode

bit 12

IREN: IrDA Encoder and Decoder Enable bit
1 = IrDA is enabled
0 = IrDA is disabled

bit 11

RTSMD: Mode Selection for UxRTS Pin bit
1 = UxRTS pin is in Simplex mode
0 = UxRTS pin is in Flow Control mode

bit 10

Unimplemented: Read as ‘0’

bit 9-8

UEN<1:0>: UARTx Enable bits
11 = UxTX, UxRX and UxBCLK pins are enabled and used; UxCTS pin is controlled by corresponding bits
in the PORTx register
10 = UxTX, UxRX, UxCTS and UxRTS pins are enabled and used
01 = UxTX, UxRX and UxRTS pins are enabled and used; UxCTS pin is controlled by corresponding bits
in the PORTx register
00 = UxTX and UxRX pins are enabled and used; UxCTS and UxRTS/UxBCLK pins are controlled by
corresponding bits in the PORTx register

bit 7

WAKE: Enable Wake-up on Start bit Detect During Sleep Mode bit
1 = Wake-up enabled
0 = Wake-up disabled

bit 6

LPBACK: UARTx Loopback Mode Select bit
1 = Loopback mode is enabled
0 = Loopback mode is disabled

Note 1:

When using 1:1 PBCLK divisor, the user software should not read/write the peripheral SFRs in the
SYSCLK cycle immediately following the instruction that clears the module’s ON bit.

 2011-2018 Microchip Technology Inc.

DS60001168K-page 185

PIC32MX1XX/2XX 28/36/44-PIN FAMILY
REGISTER 19-1:

UxMODE: UARTx MODE REGISTER (CONTINUED)

bit 5

ABAUD: Auto-Baud Enable bit
1 = Enable baud rate measurement on the next character – requires reception of Sync character (0x55);
cleared by hardware upon completion
0 = Baud rate measurement disabled or completed

bit 4

RXINV: Receive Polarity Inversion bit
1 = UxRX Idle state is ‘0’
0 = UxRX Idle state is ‘1’

bit 3

BRGH: High Baud Rate Enable bit
1 = High-Speed mode – 4x baud clock enabled
0 = Standard Speed mode – 16x baud clock enabled

bit 2-1

PDSEL<1:0>: Parity and Data Selection bits
11 = 9-bit data, no parity
10 = 8-bit data, odd parity
01 = 8-bit data, even parity
00 = 8-bit data, no parity

bit 0

STSEL: Stop Selection bit
1 = 2 Stop bits
0 = 1 Stop bit

Note 1:

When using 1:1 PBCLK divisor, the user software should not read/write the peripheral SFRs in the
SYSCLK cycle immediately following the instruction that clears the module’s ON bit.

DS60001168K-page 186

 2011-2018 Microchip Technology Inc.

PIC32MX1XX/2XX 28/36/44-PIN FAMILY
REGISTER 19-2:
Bit
Range
31:24
23:16
15:8
7:0

UxSTA: UARTx STATUS AND CONTROL REGISTER

Bit
31/23/15/7

Bit
30/22/14/6

Bit
29/21/13/5

Bit
28/20/12/4

Bit
27/19/11/3

Bit
26/18/10/2

Bit
25/17/9/1

Bit
24/16/8/0

U-0

U-0

U-0

U-0

U-0

U-0

U-0

R/W-0

—

—

—

—

—

—

—

ADM_EN

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

ADDR<7:0>
R/W-0

R/W-0

UTXISEL<1:0>
R/W-0

R/W-0

URXISEL<1:0>

R/W-0

R/W-0

R/W-0

R/W-0

R-0

R-1

UTXINV

URXEN

UTXBRK

UTXEN

UTXBF

TRMT

R/W-0

R-1

R-0

R-0

R/W-0

R-0

ADDEN

RIDLE

PERR

FERR

OERR

URXDA

Legend:
R = Readable bit

W = Writable bit

U = Unimplemented bit, read as ‘0’

-n = Value at POR

‘1’ = Bit is set

‘0’ = Bit is cleared

x = Bit is unknown

bit 31-25 Unimplemented: Read as ‘0’
bit 24

ADM_EN: Automatic Address Detect Mode Enable bit
1 = Automatic Address Detect mode is enabled
0 = Automatic Address Detect mode is disabled

bit 23-16 ADDR<7:0>: Automatic Address Mask bits
When the ADM_EN bit is ‘1’, this value defines the address character to use for automatic address
detection.
bit 15-14 UTXISEL<1:0>: TX Interrupt Mode Selection bits
11 = Reserved, do not use
10 = Interrupt is generated and asserted while the transmit buffer is empty
01 = Interrupt is generated and asserted when all characters have been transmitted
00 = Interrupt is generated and asserted while the transmit buffer contains at least one empty space
bit 13

UTXINV: Transmit Polarity Inversion bit
If IrDA mode is disabled (i.e., IREN (UxMODE<12>) is ‘0’):
1 = UxTX Idle state is ‘0’
0 = UxTX Idle state is ‘1’
If IrDA mode is enabled (i.e., IREN (UxMODE<12>) is ‘1’):
1 = IrDA encoded UxTX Idle state is ‘1’
0 = IrDA encoded UxTX Idle state is ‘0’

bit 12

URXEN: Receiver Enable bit
1 = UARTx receiver is enabled. UxRX pin is controlled by UARTx (if ON = 1)
0 = UARTx receiver is disabled. UxRX pin is ignored by the UARTx module. UxRX pin is controlled by port.

bit 11

UTXBRK: Transmit Break bit
1 = Send Break on next transmission. Start bit followed by twelve ‘0’ bits, followed by Stop bit; cleared by
hardware upon completion
0 = Break transmission is disabled or completed

bit 10

UTXEN: Transmit Enable bit
1 = UARTx transmitter is enabled. UxTX pin is controlled by UARTx (if ON = 1).
0 = UARTx transmitter is disabled. Any pending transmission is aborted and buffer is reset. UxTX pin is
controlled by port.

bit 9

UTXBF: Transmit Buffer Full Status bit (read-only)
1 = Transmit buffer is full
0 = Transmit buffer is not full, at least one more character can be written

bit 8

TRMT: Transmit Shift Register is Empty bit (read-only)
1 = Transmit shift register is empty and transmit buffer is empty (the last transmission has completed)
0 = Transmit shift register is not empty, a transmission is in progress or queued in the transmit buffer

 2011-2018 Microchip Technology Inc.

DS60001168K-page 187

PIC32MX1XX/2XX 28/36/44-PIN FAMILY
REGISTER 19-2:

UxSTA: UARTx STATUS AND CONTROL REGISTER (CONTINUED)

bit 7-6

URXISEL<1:0>: Receive Interrupt Mode Selection bit
11 = Reserved; do not use
10 = Interrupt flag bit is asserted while receive buffer is 3/4 or more full (i.e., has 6 or more data characters)
01 = Interrupt flag bit is asserted while receive buffer is 1/2 or more full (i.e., has 4 or more data characters)
00 = Interrupt flag bit is asserted while receive buffer is not empty (i.e., has at least 1 data character)

bit 5

ADDEN: Address Character Detect bit (bit 8 of received data = 1)
1 = Address Detect mode is enabled. If 9-bit mode is not selected, this control bit has no effect.
0 = Address Detect mode is disabled

bit 4

RIDLE: Receiver Idle bit (read-only)
1 = Receiver is Idle
0 = Data is being received

bit 3

PERR: Parity Error Status bit (read-only)
1 = Parity error has been detected for the current character
0 = Parity error has not been detected

bit 2

FERR: Framing Error Status bit (read-only)
1 = Framing error has been detected for the current character
0 = Framing error has not been detected

bit 1

OERR: Receive Buffer Overrun Error Status bit.
This bit is set in hardware and can only be cleared (= 0) in software. Clearing a previously set OERR bit
resets the receiver buffer and the RSR to an empty state.
1 = Receive buffer has overflowed
0 = Receive buffer has not overflowed

bit 0

URXDA: Receive Buffer Data Available bit (read-only)
1 = Receive buffer has data, at least one more character can be read
0 = Receive buffer is empty

DS60001168K-page 188

 2011-2018 Microchip Technology Inc.

PIC32MX1XX/2XX 28/36/44-PIN FAMILY
Figure 19-2 and Figure 19-3 illustrate typical receive
and transmit timing for the UART module.

FIGURE 19-2:

UART RECEPTION
Char 1

Char 2-4

Char 5-10

Char 11-13

Read to
UxRXREG
Start 1

Stop Start 2

Stop 4

Start 5

Stop 10 Start 11

Stop 13

UxRX

RIDLE
Cleared by
Software
OERR
Cleared by
Software
UxRXIF
URXISEL = 00
Cleared by
Software
UxRXIF
URXISEL = 01

UxRXIF
URXISEL = 10

FIGURE 19-3:

TRANSMISSION (8-BIT OR 9-BIT DATA)
8 into TxBUF

Write to
UxTXREG
TSR

Pull from Buffer

BCLK/16
(Shift Clock)
UxTX

Start

Bit 0

Bit 1

Stop

Start

Bit 1

UxTXIF
UTXISEL = 00

UxTXIF
UTXISEL = 01

UxTXIF
UTXISEL = 10

 2011-2018 Microchip Technology Inc.

DS60001168K-page 189

PIC32MX1XX/2XX 28/36/44-PIN FAMILY
NOTES:

DS60001168K-page 190

 2011-2018 Microchip Technology Inc.

PIC32MX1XX/2XX 28/36/44-PIN FAMILY
20.0
Note:

PARALLEL MASTER PORT
(PMP)
This data sheet summarizes the features
of the PIC32MX1XX/2XX 28/36/44-pin
Family of devices. It is not intended to be
a comprehensive reference source. To
complement the information in this data
sheet, refer to Section 13. “Parallel
Master Port (PMP)” (DS60001128),
which is available from the Documentation
> Reference Manual section of the
Microchip
PIC32
web
site
(www.microchip.com/pic32).

The PMP is a parallel 8-bit input/output module
specifically designed to communicate with a wide
variety of parallel devices, such as communications
peripherals, LCDs, external memory devices and
microcontrollers. Because the interface to parallel
peripherals varies significantly, the PMP module is
highly configurable.

Key features of the PMP module include:
• Fully multiplexed address/data mode
• Demultiplexed or partially multiplexed address/
data mode
- up to 11 address lines with single Chip Select
- up to 12 address lines without Chip Select
• One Chip Select line
• Programmable strobe options
- Individual read and write strobes or;
- Read/write strobe with enable strobe
• Address auto-increment/auto-decrement
• Programmable address/data multiplexing
• Programmable polarity on control signals
• Legacy parallel slave port support
• Enhanced parallel slave support
- Address support
- 4-byte deep auto-incrementing buffer
• Programmable Wait states
• Selectable input voltage levels
Figure 20-1 illustrates the PMP module block diagram.

FIGURE 20-1:

PMP MODULE PINOUT AND CONNECTIONS TO EXTERNAL DEVICES
Address Bus
Data Bus
Control Lines

PIC32MX1XX/2XX
Parallel
Master Port

PMA<0>
PMALL
PMA<1>
PMALH

Flash
EEPROM
SRAM

Up to 12-bit Address

PMA<10:2>
PMA<14>
PMCS1

PMRD
PMRD/PMWR
PMWR
PMENB

Microcontroller

LCD

FIFO
Buffer

PMD<7:0>

8-bit Data (with or without multiplexed addressing)

 2011-2018 Microchip Technology Inc.

DS60001168K-page 191

PMP Control Registers

Virtual Address
(BF80_#)

Register
Name(1)

TABLE 20-1:

7000

PMCON

PARALLEL MASTER PORT REGISTER MAP

7010 PMMODE

7020 PMADDR

31/15

30/14

29/13

31:16

—

—

—

15:0

ON

31:16

—

—
—

SIDL
—

IRQM<1:0>

28/12

27/11

—

—

ADRMUX<1:0>
—
—

15:0

BUSY

31:16

—

—

—

—

INCM<1:0>
—

15:0

—

CS1
ADDR14

—

—

—

26/10

25/9

24/8

23/7

22/6

—

—

—

—

—

PMPTTL PTWREN PTRDEN
—
—
—
—
—

MODE<1:0>
—
—

21/5

20/4

19/3

18/2

17/1

16/0

All Resets

Bit Range

Bits

—

—

—

—

—

—

0000

CSF<1:0>
—
—

ALP
—

—
—

CS1P
—

—
—

WRSP
—

RDSP
—

0000
0000

WAITB<1:0>
—
—

—

WAITM<3:0>
—
—

—

WAITE<1:0>
—
—

0000
0000
0000

ADDR<10:0>

7030 PMDOUT

31:16
15:0

DATAOUT<31:0>

0000
0000

7040

PMDIN

31:16
15:0

DATAIN<31:0>

0000
0000

7050

PMAEN

7060

PMSTAT

Legend:
Note 1:

31:16

—

—

—

—

—

15:0

—

PTEN14

—

—

—

31:16

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

0000

PTEN<10:0>
—

—

—

—

15:0
IBF
IBOV
—
—
IB3F
IB2F
IB1F
IB0F
OBE
x = unknown value on Reset; — = unimplemented, read as ‘0’. Reset values are shown in hexadecimal.

0000

—

—

—

—

—

—

—

0000

OBUF

—

—

OB3E

OB2E

OB1E

OB0E

008F

All registers in this table have corresponding CLR, SET and INV registers at their virtual addresses, plus offsets of 0x4, 0x8 and 0xC, respectively. See Section 11.2 “CLR, SET and INV Registers” for
more information.

 2011-2018 Microchip Technology Inc.

PIC32MX1XX/2XX 28/36/44-PIN FAMILY

DS60001168K-page 192

20.1

PIC32MX1XX/2XX 28/36/44-PIN FAMILY
REGISTER 20-1:
Bit
Range
31:24
23:16
15:8

Bit
31/23/15/7

Bit
30/22/14/6

Bit
29/21/13/5

Bit
28/20/12/4

Bit
27/19/11/3

Bit
26/18/10/2

Bit
25/17/9/1

Bit
24/16/8/0

U-0

U-0

U-0

U-0

U-0

U-0

U-0

U-0

—

—

—

—

—

—

—

—

U-0

U-0

U-0

U-0

U-0

U-0

U-0

U-0

—

—

—

—

—

—

—

—

R/W-0
(1)

U-0

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

—

SIDL

ADRMUX<1:0>

PMPTTL

PTWREN

PTRDEN

R/W-0

R/W-0

R/W-0

U-0

R/W-0

U-0

R/W-0

R/W-0

ALP(2)

—

CS1P(2)

—

WRSP

RDSP

ON

7:0

PMCON: PARALLEL PORT CONTROL REGISTER

CSF<1:0>(2)

Legend:
R = Readable bit

W = Writable bit

U = Unimplemented bit, read as ‘0’

-n = Value at POR

‘1’ = Bit is set

‘0’ = Bit is cleared

x = Bit is unknown

bit 31-16 Unimplemented: Read as ‘0’
bit 15

ON: Parallel Master Port Enable bit(1)
1 = PMP enabled
0 = PMP disabled, no off-chip access performed

bit 14

Unimplemented: Read as ‘0’

bit 13

SIDL: Stop in Idle Mode bit
1 = Discontinue module operation when the device enters Idle mode
0 = Continue module operation when the device enters Idle mode

bit 12-11 ADRMUX<1:0>: Address/Data Multiplexing Selection bits
11 = Lower 8 bits of address are multiplexed on PMD<7:0> pins; upper 8 bits are not used
10 = All 16 bits of address are multiplexed on PMD<7:0> pins
01 = Lower 8 bits of address are multiplexed on PMD<7:0> pins, upper bits are on PMA<10:8> and
PMA<14>
00 = Address and data appear on separate pins
bit 10

PMPTTL: PMP Module TTL Input Buffer Select bit
1 = PMP module uses TTL input buffers
0 = PMP module uses Schmitt Trigger input buffer

bit 9

PTWREN: Write Enable Strobe Port Enable bit
1 = PMWR/PMENB port enabled
0 = PMWR/PMENB port disabled

bit 8

PTRDEN: Read/Write Strobe Port Enable bit
1 = PMRD/PMWR port enabled
0 = PMRD/PMWR port disabled

bit 7-6

CSF<1:0>: Chip Select Function bits(2)
11 = Reserved
10 = PMCS1 functions as Chip Select
01 = PMCS1 functions as PMA<14>
00 = PMCS1 functions as PMA<14>

bit 5

ALP: Address Latch Polarity bit(2)
1 = Active-high (PMALL and PMALH)
0 = Active-low (PMALL and PMALH)

Note 1: When using 1:1 PBCLK divisor, the user’s software should not read/write the peripheral’s SFRs in the
SYSCLK cycle immediately following the instruction that clears the module’s ON control bit.
2: These bits have no effect when their corresponding pins are used as address lines.

 2011-2018 Microchip Technology Inc.

DS60001168K-page 193

PIC32MX1XX/2XX 28/36/44-PIN FAMILY
REGISTER 20-1:

PMCON: PARALLEL PORT CONTROL REGISTER (CONTINUED)

bit 4

Unimplemented: Read as ‘0’

bit 3

CS1P: Chip Select 0 Polarity bit(2)
1 = Active-high (PMCS1)
0 = Active-low (PMCS1)

bit 2

Unimplemented: Read as ‘0’

bit 1

WRSP: Write Strobe Polarity bit
For Slave Modes and Master mode 2 (MODE<1:0> = 00,01,10):
1 = Write strobe active-high (PMWR)
0 = Write strobe active-low (PMWR)
For Master mode 1 (MODE<1:0> = 11):
1 = Enable strobe active-high (PMENB)
0 = Enable strobe active-low (PMENB)

bit 0

RDSP: Read Strobe Polarity bit
For Slave modes and Master mode 2 (MODE<1:0> = 00,01,10):
1 = Read Strobe active-high (PMRD)
0 = Read Strobe active-low (PMRD)
For Master mode 1 (MODE<1:0> = 11):
1 = Read/write strobe active-high (PMRD/PMWR)
0 = Read/write strobe active-low (PMRD/PMWR)

Note 1: When using 1:1 PBCLK divisor, the user’s software should not read/write the peripheral’s SFRs in the
SYSCLK cycle immediately following the instruction that clears the module’s ON control bit.
2: These bits have no effect when their corresponding pins are used as address lines.

DS60001168K-page 194

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PIC32MX1XX/2XX 28/36/44-PIN FAMILY
REGISTER 20-2:
Bit
Range

PMMODE: PARALLEL PORT MODE REGISTER

Bit
31/23/15/7

Bit
30/22/14/6

Bit
29/21/13/5

Bit
28/20/12/4

Bit
27/19/11/3

Bit
26/18/10/2

Bit
25/17/9/1

Bit
24/16/8/0

U-0

U-0

U-0

U-0

U-0

U-0

U-0

U-0

—

—

—

—

—

—

—

—

U-0

U-0

U-0

U-0

U-0

U-0

U-0

U-0

—

—

—

—

—

—

—

—

R-0

R/W-0

R/W-0

R/W-0

R/W-0

U-0

R/W-0

R/W-0

31:24
23:16
15:8

BUSY
R/W-0

7:0

IRQM<1:0>
R/W-0

R/W-0

WAITB<1:0>(1)

INCM<1:0>
R/W-0

R/W-0

—
R/W-0

WAITM<3:0>(1)

MODE<1:0>
R/W-0

R/W-0

WAITE<1:0>(1)

Legend:
R = Readable bit

W = Writable bit

U = Unimplemented bit, read as ‘0’

-n = Value at POR

‘1’ = Bit is set

‘0’ = Bit is cleared

x = Bit is unknown

bit 31-16 Unimplemented: Read as ‘0’
bit 15

BUSY: Busy bit (Master mode only)
1 = Port is busy
0 = Port is not busy

bit 14-13 IRQM<1:0>: Interrupt Request Mode bits
11 = Reserved, do not use
10 = Interrupt generated when Read Buffer 3 is read or Write Buffer 3 is written (Buffered PSP mode)
or on a read or write operation when PMA<1:0> =11 (Addressable Slave mode only)
01 = Interrupt generated at the end of the read/write cycle
00 = No Interrupt generated
bit 12-11 INCM<1:0>: Increment Mode bits
11 = Slave mode read and write buffers auto-increment (MODE<1:0> = 00 only)
10 = Decrement ADDR<10:2> and ADDR<14> by 1 every read/write cycle(2)
01 = Increment ADDR<10:2> and ADDR<14> by 1 every read/write cycle(2)
00 = No increment or decrement of address
bit 10

Unimplemented: Read as ‘0’

bit 9-8

MODE<1:0>: Parallel Port Mode Select bits
11 = Master mode 1 (PMCS1, PMRD/PMWR, PMENB, PMA, and PMD<7:0>)
10 = Master mode 2 (PMCS1, PMRD, PMWR, PMA, and PMD<7:0>)
01 = Enhanced Slave mode, control signals (PMRD, PMWR, PMCS1, PMD<7:0>, and PMA<1:0>)
00 = Legacy Parallel Slave Port, control signals (PMRD, PMWR, PMCS1, and PMD<7:0>)

bit 7-6

WAITB<1:0>: Data Setup to Read/Write Strobe Wait States bits(1)
11 = Data wait of 4 TPB; multiplexed address phase of 4 TPB
10 = Data wait of 3 TPB; multiplexed address phase of 3 TPB
01 = Data wait of 2 TPB; multiplexed address phase of 2 TPB
00 = Data wait of 1 TPB; multiplexed address phase of 1 TPB (default)

bit 5-2

WAITM<3:0>: Data Read/Write Strobe Wait States bits(1)
1111 = Wait of 16 TPB
•
•
•

0001 = Wait of 2 TPB
0000 = Wait of 1 TPB (default)
Note 1: Whenever WAITM<3:0> = 0000, WAITB and WAITE bits are ignored and forced to 1 TPBCLK cycle for a
write operation; WAITB = 1 TPBCLK cycle, WAITE = 0 TPBCLK cycles for a read operation.
2: Address bit A14 is not subject to auto-increment/decrement if configured as Chip Select CS1.

 2011-2018 Microchip Technology Inc.

DS60001168K-page 195

PIC32MX1XX/2XX 28/36/44-PIN FAMILY
REGISTER 20-2:
bit 1-0

PMMODE: PARALLEL PORT MODE REGISTER (CONTINUED)

WAITE<1:0>: Data Hold After Read/Write Strobe Wait States bits(1)
11 = Wait of 4 TPB
10 = Wait of 3 TPB
01 = Wait of 2 TPB
00 = Wait of 1 TPB (default)
For Read operations:
11 = Wait of 3 TPB
10 = Wait of 2 TPB
01 = Wait of 1 TPB
00 = Wait of 0 TPB (default)

Note 1: Whenever WAITM<3:0> = 0000, WAITB and WAITE bits are ignored and forced to 1 TPBCLK cycle for a
write operation; WAITB = 1 TPBCLK cycle, WAITE = 0 TPBCLK cycles for a read operation.
2: Address bit A14 is not subject to auto-increment/decrement if configured as Chip Select CS1.

DS60001168K-page 196

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PIC32MX1XX/2XX 28/36/44-PIN FAMILY
REGISTER 20-3:
Bit
Range
31:24
23:16

15:8
7:0

PMADDR: PARALLEL PORT ADDRESS REGISTER

Bit
31/23/15/7

Bit
30/22/14/6

Bit
29/21/13/5

Bit
28/20/12/4

Bit
27/19/11/3

Bit
26/18/10/2

Bit
25/17/9/1

Bit
24/16/8/0

U-0

U-0

U-0

U-0

U-0

U-0

U-0

U-0

—

—

—

—

—

—

—

—

U-0

U-0

U-0

U-0

U-0

U-0

U-0

U-0

—

—

—

—

—

—

—

—

U-0

R/W-0
(1)

U-0

U-0

U-0

R/W-0

R/W-0

R/W-0

—

—

—

R/W-0

R/W-0

R/W-0

—
R/W-0

CS1

ADDR14(2)
R/W-0

ADDR<10:8>
R/W-0

R/W-0

R/W-0

ADDR<7:0>
Legend:
R = Readable bit

W = Writable bit

U = Unimplemented bit, read as ‘0’

-n = Value at POR

‘1’ = Bit is set

‘0’ = Bit is cleared

x = Bit is unknown

bit 31-15 Unimplemented: Read as ‘0’
bit 14

CS1: Chip Select 1 bit(1)
1 = Chip Select 1 is active
0 = Chip Select 1 is inactive

bit 14

ADDR<14>: Destination Address bit 14(2)

bit 13-11 Unimplemented: Read as ‘0’
bit 10-0

ADDR<10:0>: Destination Address bits

Note 1:
2:

When the CSF<1:0> bits (PMCON<7:6>) = 10.
When the CSF<1:0> bits (PMCON<7:6>) = 00 or 01.

 2011-2018 Microchip Technology Inc.

DS60001168K-page 197

PIC32MX1XX/2XX 28/36/44-PIN FAMILY
REGISTER 20-4:
Bit
Range
31:24
23:16
15:8
7:0

PMAEN: PARALLEL PORT PIN ENABLE REGISTER

Bit
31/23/15/7

Bit
30/22/14/6

Bit
29/21/13/5

Bit
28/20/12/4

Bit
27/19/11/3

Bit
26/18/10/2

Bit
25/17/9/1

Bit
24/16/8/0

U-0

U-0

U-0

U-0

U-0

U-0

U-0

U-0

—

—

—

—

—

—

—

—

U-0

U-0

U-0

U-0

U-0

U-0

U-0

U-0

—

—

—

—

—

—

—

—

U-0

R/W-0

U-0

U-0

U-0

R/W-0

R/W-0

R/W-0

—

PTEN14

—

—

—

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

PTEN<10:8>
R/W-0

R/W-0

R/W-0

PTEN<7:0>

Legend:
R = Readable bit

W = Writable bit

U = Unimplemented bit, read as ‘0’

-n = Value at POR

‘1’ = Bit is set

‘0’ = Bit is cleared

x = Bit is unknown

bit 31-15 Unimplemented: Read as ‘0’
bit 15-14 PTEN14: PMCS1 Address Port Enable bits
1 = PMA14 functions as either PMA14 or PMCS1(1)
0 = PMA14 functions as port I/O
bit 13-11 Unimplemented: Read as ‘0’
bit 10-2

PTEN<10:2>: PMP Address Port Enable bits
1 = PMA<10:2> function as PMP address lines
0 = PMA<10:2> function as port I/O

bit 1-0

PTEN<1:0>: PMALH/PMALL Address Port Enable bits
1 = PMA1 and PMA0 function as either PMA<1:0> or PMALH and PMALL(2)
0 = PMA1 and PMA0 pads functions as port I/O

Note 1: The use of this pin as PMA14 or CS1 is selected by the CSF<1:0> bits in the PMCON register.
2: The use of these pins as PMA1/PMA0 or PMALH/PMALL depends on the Address/Data Multiplex mode
selected by bits ADRMUX<1:0> in the PMCON register.

DS60001168K-page 198

 2011-2018 Microchip Technology Inc.

PIC32MX1XX/2XX 28/36/44-PIN FAMILY
REGISTER 20-5:
Bit
Range
31:24
23:16
15:8
7:0

PMSTAT: PARALLEL PORT STATUS REGISTER (SLAVE MODES ONLY)

Bit
31/23/15/7

Bit
30/22/14/6

Bit
29/21/13/5

Bit
28/20/12/4

Bit
27/19/11/3

Bit
26/18/10/2

Bit
25/17/9/1

Bit
24/16/8/0

U-0

U-0

U-0

U-0

U-0

U-0

U-0

U-0

—

—

—

—

—

—

—

—

U-0

U-0

U-0

U-0

U-0

U-0

U-0

U-0

—

—

—

—

—

—

—

—

R-0

R/W-0, HS, SC

U-0

U-0

R-0

R-0

R-0

R-0

IBF

IBOV

—

—

IB3F

IB2F

IB1F

IB0F

R-1

R/W-0, HS, SC

U-0

U-0

R-1

R-1

R-1

R-1

OBE

OBUF

—

—

OB3E

OB2E

OB1E

OB0E

Legend:

HS = Hardware Set

SC = Cleared by Software

R = Readable bit

W = Writable bit

U = Unimplemented bit, read as ‘0’

-n = Value at POR

‘1’ = Bit is set

‘0’ = Bit is cleared

x = Bit is unknown

bit 31-16 Unimplemented: Read as ‘0’
bit 15

IBF: Input Buffer Full Status bit
1 = All writable input buffer registers are full
0 = Some or all of the writable input buffer registers are empty

bit 14

IBOV: Input Buffer Overflow Status bit
1 = A write attempt to a full input byte buffer occurred (must be cleared in software)
0 = No overflow occurred

bit 13-12 Unimplemented: Read as ‘0’
bit 11-8

IBxF: Input Buffer ‘x’ Status Full bits
1 = Input Buffer contains data that has not been read (reading buffer will clear this bit)
0 = Input Buffer does not contain any unread data

bit 7

OBE: Output Buffer Empty Status bit
1 = All readable output buffer registers are empty
0 = Some or all of the readable output buffer registers are full

bit 6

OBUF: Output Buffer Underflow Status bit
1 = A read occurred from an empty output byte buffer (must be cleared in software)
0 = No underflow occurred

bit 5-4

Unimplemented: Read as ‘0’

bit 3-0

OBxE: Output Buffer ‘x’ Status Empty bits
1 = Output buffer is empty (writing data to the buffer will clear this bit)
0 = Output buffer contains data that has not been transmitted

 2011-2018 Microchip Technology Inc.

DS60001168K-page 199

PIC32MX1XX/2XX 28/36/44-PIN FAMILY
NOTES:

DS60001168K-page 200

 2011-2018 Microchip Technology Inc.

PIC32MX1XX/2XX 28/36/44-PIN FAMILY
21.0
Note:

REAL-TIME CLOCK AND
CALENDAR (RTCC)
This data sheet summarizes the features
of the PIC32MX1XX/2XX 28/36/44-pin
Family of devices. It is not intended to be
a comprehensive reference source. To
complement the information in this data
sheet, refer to Section 29. “Real-Time
Clock
and
Calendar
(RTCC)”
(DS60001125), which is available from the
Documentation > Reference Manual
section of the Microchip PIC32 web site
(www.microchip.com/pic32).

The PIC32 RTCC module is intended for applications in
which accurate time must be maintained for extended
periods of time with minimal or no CPU intervention.
Low-power optimization provides extended battery
lifetime while keeping track of time.

Following are some of the key features of this module:
•
•
•
•
•

•
•
•
•
•
•
•
•
•
•
•
•

FIGURE 21-1:

Time: hours, minutes and seconds
24-hour format (military time)
Visibility of one-half second period
Provides calendar: day, date, month and year
Alarm intervals are configurable for half of a
second, one second, 10 seconds, one minute, 10
minutes, one hour, one day, one week, one month
and one year
Alarm repeat with decrementing counter
Alarm with indefinite repeat: Chime
Year range: 2000 to 2099
Leap year correction
BCD format for smaller firmware overhead
Optimized for long-term battery operation
Fractional second synchronization
User calibration of the clock crystal frequency with
auto-adjust
Calibration range: 0.66 seconds error per month
Calibrates up to 260 ppm of crystal error
Requirements: External 32.768 kHz clock crystal
Alarm pulse or seconds clock output on
RTCC pin

RTCC BLOCK DIAGRAM
CAL<9:0>

32.768 kHz Input
from Secondary
Oscillator (SOSC)

RTCC Prescalers

RTCTIME

0.5s

HR, MIN, SEC

RTCC Timer
Alarm
Event

RTCVAL

RTCDATE
YEAR, MONTH, DAY, WDAY

Comparator

ALRMTIME

Compare Registers
with Masks

HR, MIN, SEC
ALRMVAL

ALRMDATE
MONTH, DAY, WDAY

Repeat Counter

Set RTCC Flag
RTCC Interrupt Logic

Alarm Pulse
Seconds Pulse

0
1

RTCC

RTSECSEL
RTCOE

 2011-2018 Microchip Technology Inc.

DS60001168K-page 201

RTCC Control Registers

Virtual Address
(BF80_#)

Register
Name(1)

TABLE 21-1:

0200

RTCCON

RTCC REGISTER MAP

0210 RTCALRM
0220 RTCTIME
0230 RTCDATE
0240 ALRMTIME
0250 ALRMDATE
Legend:
Note 1:

31/15

30/14

31:16

—

15:0

ON

31:16

—

15:0 ALRMEN
—

31:16
15:0

29/13

28/12

27/11

26/10

—

—

—

—

—

—
—

SIDL
—

—
—

—
—

—
—

CHIME
—

—

31:16

PIV
ALRMSYNC
HR10<1:0>
SEC10<2:0>

YEAR10<3:0>

25/9

24/8

—
—

—
—

23/7

22/6

21/5

20/4

AMASK<3:0>
HR01<3:0>

—

—
—

—
—

SEC01<3:0>

—

—

—

—

YEAR01<3:0>

—

—

—

—

MONTH10
—

—

DAY10<1:0>

DAY01<3:0>

—

—

15:0

HR10<1:0>
SEC10<2:0>

HR01<3:0>
SEC01<3:0>

—
—

—

31:16

—

—

—

—

—

MONTH10

—

—

—

—

—

—

—

DAY01<3:0>

0000

—

—
MIN10<2:0>
—

—

—

—

—

—

MONTH01<3:0>
—
—

MONTH01<3:0>
—

WDAY01<2:0>

xx00
xxxx

WDAY01<2:0>
MIN01<3:0>
—
—

0000
0000
0000
xxxx

MIN01<3:0>

—
—

—

16/0

ARPT<7:0>

—

—

17/1

RTCWREN RTCSYNC HALFSEC RTCOE
—
—
—
—

MIN10<2:0>

15:0

DAY10<3:0>

18/2

CAL<9:0>
RTSECSEL RTCCLKON
—
—

31:16

15:0

19/3

All Resets

Bit Range

Bits

xx00
—

xxxx
xx00
00xx

xx0x
x = unknown value on Reset; — = unimplemented, read as ‘0’. Reset values are shown in hexadecimal.
All registers in this table have corresponding CLR, SET and INV registers at its virtual address, plus an offset of 0x4, 0x8 and 0xC, respectively. See Section 11.2 “CLR, SET and INV Registers” for more
information.

 2011-2018 Microchip Technology Inc.

PIC32MX1XX/2XX 28/36/44-PIN FAMILY

DS60001168K-page 202

21.1

PIC32MX1XX/2XX 28/36/44-PIN FAMILY
REGISTER 21-1:
Bit
Range
31:24
23:16

Bit
31/23/15/7

Bit
30/22/14/6

Bit
Bit
29/21/13/5 28/20/12/4

U-0

U-0

U-0

—

—

—

R/W-0

R/W-0

R/W-0

Bit
27/19/11/3

Bit
26/18/10/2

Bit
25/17/9/1

Bit
24/16/8/0

U-0

U-0

U-0

R/W-0

R/W-0

—

—

—

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

CAL<9:8>

CAL<7:0>

15:8
7:0

RTCCON: RTC CONTROL REGISTER

R/W-0

U-0

R/W-0

U-0

U-0

U-0

U-0

U-0

ON(1,2)

—

SIDL

—

—

—

—

—

R/W-0

R-0

U-0

U-0

R/W-0

R-0

R-0

—

—

RTSECSEL(3) RTCCLKON

RTCWREN(4) RTCSYNC HALFSEC(5)

R/W-0

RTCOE

Legend:
R = Readable bit

W = Writable bit

U = Unimplemented bit, read as ‘0’

-n = Value at POR

‘1’ = Bit is set

‘0’ = Bit is cleared

x = Bit is unknown

bit 31-26 Unimplemented: Read as ‘0’
bit 25-16 CAL<9:0>: RTC Drift Calibration bits, which contain a signed 10-bit integer value
0111111111 = Maximum positive adjustment, adds 511 RTC clock pulses every one minute
•
•
•

0000000001 = Minimum positive adjustment, adds 1 RTC clock pulse every one minute
0000000000 = No adjustment
1111111111 = Minimum negative adjustment, subtracts 1 RTC clock pulse every one minute
•
•
•

1000000000 = Maximum negative adjustment, subtracts 512 clock pulses every one minute
bit 15

ON: RTCC On bit(1,2)
1 = RTCC module is enabled
0 = RTCC module is disabled

bit 14

Unimplemented: Read as ‘0’

bit 13

SIDL: Stop in Idle Mode bit
1 = Disables the PBCLK to the RTCC when the device enters Idle mode
0 = Continue normal operation when the device enters Idle mode

bit 12-8

Unimplemented: Read as ‘0’

bit 7

RTSECSEL: RTCC Seconds Clock Output Select bit(3)
1 = RTCC Seconds Clock is selected for the RTCC pin
0 = RTCC Alarm Pulse is selected for the RTCC pin

bit 6

RTCCLKON: RTCC Clock Enable Status bit
1 = RTCC Clock is actively running
0 = RTCC Clock is not running

Note 1:
2:

The ON bit is only writable when RTCWREN = 1.
When using the 1:1 PBCLK divisor, the user’s software should not read/write the peripheral’s SFRs in the
SYSCLK cycle immediately following the instruction that clears the module’s ON bit.
Requires RTCOE = 1 (RTCCON<0>) for the output to be active.
The RTCWREN bit can be set only when the write sequence is enabled.
This bit is read-only. It is cleared to ‘0’ on a write to the seconds bit fields (RTCTIME<14:8>).

3:
4:
5:
Note:

This register is reset only on a Power-on Reset (POR).

 2011-2018 Microchip Technology Inc.

DS60001168K-page 203

PIC32MX1XX/2XX 28/36/44-PIN FAMILY
REGISTER 21-1:

RTCCON: RTC CONTROL REGISTER (CONTINUED)

bit 5-4

Unimplemented: Read as ‘0’

bit 3

RTCWREN: RTC Value Registers Write Enable bit(4)
1 = RTC Value registers can be written to by the user
0 = RTC Value registers are locked out from being written to by the user

bit 2

RTCSYNC: RTCC Value Registers Read Synchronization bit
1 = RTC Value registers can change while reading, due to a rollover ripple that results in an invalid data read
If the register is read twice and results in the same data, the data can be assumed to be valid
0 = RTC Value registers can be read without concern about a rollover ripple

bit 1

HALFSEC: Half-Second Status bit(5)
1 = Second half period of a second
0 = First half period of a second

bit 0

RTCOE: RTCC Output Enable bit
1 = RTCC clock output enabled – clock presented onto an I/O
0 = RTCC clock output disabled

Note 1:
2:

The ON bit is only writable when RTCWREN = 1.
When using the 1:1 PBCLK divisor, the user’s software should not read/write the peripheral’s SFRs in the
SYSCLK cycle immediately following the instruction that clears the module’s ON bit.
Requires RTCOE = 1 (RTCCON<0>) for the output to be active.
The RTCWREN bit can be set only when the write sequence is enabled.
This bit is read-only. It is cleared to ‘0’ on a write to the seconds bit fields (RTCTIME<14:8>).

3:
4:
5:
Note:

This register is reset only on a Power-on Reset (POR).

DS60001168K-page 204

 2011-2018 Microchip Technology Inc.

PIC32MX1XX/2XX 28/36/44-PIN FAMILY
REGISTER 21-2:
Bit
Range
31:24
23:16
15:8
7:0

RTCALRM: RTC ALARM CONTROL REGISTER

Bit
31/23/15/7

Bit
30/22/14/6

Bit
29/21/13/5

Bit
28/20/12/4

Bit
Bit
27/19/11/3 26/18/10/2

U-0

U-0

U-0

U-0

U-0

—

—

—

—

—

U-0

U-0

U-0

U-0

U-0

Bit
25/17/9/1

Bit
24/16/8/0

U-0

U-0

U-0

—

—

—

U-0

U-0

U-0

—

—

—

—

—

—

—

—

R/W-0

R/W-0

R-0

R/W-0

R/W-0

CHIME(2)

R/W-0
(2)

R/W-0

ALRMEN(1,2)

R/W-0
(2)

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

PIV

ALRMSYNC(3)

R/W-0

AMASK<3:0>

R/W-0

ARPT<7:0>(2)

Legend:
R = Readable bit
-n = Value at POR

W = Writable bit
‘1’ = Bit is set

U = Unimplemented bit, read as ‘0’
‘0’ = Bit is cleared
x = Bit is unknown

bit 31-16 Unimplemented: Read as ‘0’
bit 15
ALRMEN: Alarm Enable bit(1,2)
1 = Alarm is enabled
0 = Alarm is disabled
bit 14
CHIME: Chime Enable bit(2)
1 = Chime is enabled – ARPT<7:0> is allowed to rollover from 0x00 to 0xFF
0 = Chime is disabled – ARPT<7:0> stops once it reaches 0x00
bit 13
PIV: Alarm Pulse Initial Value bit(2)
When ALRMEN = 0, PIV is writable and determines the initial value of the Alarm Pulse.
When ALRMEN = 1, PIV is read-only and returns the state of the Alarm Pulse.
bit 12
ALRMSYNC: Alarm Sync bit(3)
1 = ARPT<7:0> and ALRMEN may change as a result of a half second rollover during a read.
The ARPT must be read repeatedly until the same value is read twice. This must be done since multiple
bits may be changing, which are then synchronized to the PB clock domain
0 = ARPT<7:0> and ALRMEN can be read without concerns of rollover because the prescaler is > 32 RTC
clocks away from a half-second rollover
bit 11-8 AMASK<3:0>: Alarm Mask Configuration bits(2)
0000 = Every half-second
0001 = Every second
0010 = Every 10 seconds
0011 = Every minute
0100 = Every 10 minutes
0101 = Every hour
0110 = Once a day
0111 = Once a week
1000 = Once a month
1001 = Once a year (except when configured for February 29, once every four years)
1010 = Reserved; do not use
1011 = Reserved; do not use
11xx = Reserved; do not use
Note 1:
2:
3:
Note:

Hardware clears the ALRMEN bit anytime the alarm event occurs, when ARPT<7:0> = 00 and
CHIME = 0.
This field should not be written when the RTCC ON bit = ‘1’ (RTCCON<15>) and ALRMSYNC = 1.
This assumes a CPU read will execute in less than 32 PBCLKs.
This register is reset only on a Power-on Reset (POR).

 2011-2018 Microchip Technology Inc.

DS60001168K-page 205

PIC32MX1XX/2XX 28/36/44-PIN FAMILY
REGISTER 21-2:

RTCALRM: RTC ALARM CONTROL REGISTER (CONTINUED)

ARPT<7:0>: Alarm Repeat Counter Value bits(2)
11111111 = Alarm will trigger 256 times

bit 7-0

•
•
•

00000000 = Alarm will trigger one time
The counter decrements on any alarm event. The counter only rolls over from 0x00 to 0xFF if CHIME = 1.
Note 1:
2:
3:
Note:

Hardware clears the ALRMEN bit anytime the alarm event occurs, when ARPT<7:0> = 00 and
CHIME = 0.
This field should not be written when the RTCC ON bit = ‘1’ (RTCCON<15>) and ALRMSYNC = 1.
This assumes a CPU read will execute in less than 32 PBCLKs.
This register is reset only on a Power-on Reset (POR).

DS60001168K-page 206

 2011-2018 Microchip Technology Inc.

PIC32MX1XX/2XX 28/36/44-PIN FAMILY
REGISTER 21-3:
Bit
Range
31:24
23:16
15:8
7:0

RTCTIME: RTC TIME VALUE REGISTER

Bit
31/23/15/7

Bit
30/22/14/6

Bit
29/21/13/5

Bit
28/20/12/4

Bit
27/19/11/3

Bit
26/18/10/2

Bit
25/17/9/1

Bit
24/16/8/0

U-0

U-0

R/W-x

R/W-x

R/W-x

R/W-x

R/W-x

R/W-x

—

—

U-0

R/W-x

—
U-0

HR10<1:0>
R/W-x

R/W-x

HR01<3:0>
R/W-x

R/W-x

MIN10<2:0>
R/W-x

—

R/W-x

R/W-x

R/W-x

MIN01<3:0>
R/W-x

R/W-x

R/W-x

SEC10<2:0>

R/W-x

R/W-x

SEC01<3:0>

U-0

U-0

U-0

U-0

U-0

U-0

U-0

U-0

—

—

—

—

—

—

—

—

Legend:
R = Readable bit

W = Writable bit

U = Unimplemented bit, read as ‘0’

-n = Value at POR

‘1’ = Bit is set

‘0’ = Bit is cleared

x = Bit is unknown

bit 31-30 Unimplemented: Read as ‘0’
bit 29-28 HR10<1:0>: Binary-Coded Decimal Value of Hours bits, 10s place digit; contains a value from 0 to 2
bit 27-24 HR01<3:0>: Binary-Coded Decimal Value of Hours bits, 1s place digit; contains a value from 0 to 9
bit 23

Unimplemented: Read as ‘0’

bit 22-20 MIN10<2:0>: Binary-Coded Decimal Value of Minutes bits, 10s place digit; contains a value from 0 to 5
bit 19-16 MIN01<3:0>: Binary-Coded Decimal Value of Minutes bits, 1s place digit; contains a value from 0 to 9
bit 15

Unimplemented: Read as ‘0’

bit 14-12 SEC10<2:0>: Binary-Coded Decimal Value of Seconds bits, 10s place digit; contains a value from 0 to 5
bit 11-8

SEC01<3:0>: Binary-Coded Decimal Value of Seconds bits, 1s place digit; contains a value from 0 to 9

bit 7-0

Unimplemented: Read as ‘0’

Note:

This register is only writable when RTCWREN = 1 (RTCCON<3>).

 2011-2018 Microchip Technology Inc.

DS60001168K-page 207

PIC32MX1XX/2XX 28/36/44-PIN FAMILY
REGISTER 21-4:
Bit
Range
31:24
23:16
15:8
7:0

RTCDATE: RTC DATE VALUE REGISTER

Bit
31/23/15/7

Bit
30/22/14/6

Bit
29/21/13/5

Bit
28/20/12/4

Bit
27/19/11/3

Bit
26/18/10/2

Bit
25/17/9/1

Bit
24/16/8/0

R/W-x

R/W-x

R/W-x

R/W-x

R/W-x

R/W-x

R/W-x

R/W-x

U-0

U-0

U-0

R/W-x

R/W-x

R/W-x

—

—

—

MONTH10

U-0

U-0

R/W-x

R/W-x

YEAR10<3:0>

YEAR01<3:0>
R/W-x

R/W-x

MONTH01<3:0>
R/W-x

R/W-x

R/W-x

—

—

U-0

U-0

U-0

DAY10<1:0>
U-0

U-0

—

—

—

—

—

R/W-x

R/W-x

DAY01<3:0>
R/W-x

R/W-x

WDAY01<2:0>

Legend:
R = Readable bit

W = Writable bit

U = Unimplemented bit, read as ‘0’

-n = Value at POR

‘1’ = Bit is set

‘0’ = Bit is cleared

x = Bit is unknown

bit 31-28 YEAR10<3:0>: Binary-Coded Decimal Value of Years bits, 10s place digit; contains a value from 0 to 9
bit 27-24 YEAR01<3:0>: Binary-Coded Decimal Value of Years bits, 1s place digit; contains a value from 0 to 9
bit 23-21 Unimplemented: Read as ‘0’
bit 20

MONTH10: Binary-Coded Decimal Value of Months bits, 10s place digit; contains a value of 0 or 1

bit 19-16 MONTH01<3:0>: Binary-Coded Decimal Value of Months bits, 1s place digit; contains a value from 0 to 9
bit 15-14 Unimplemented: Read as ‘0’
bit 13-12 DAY10<1:0>: Binary-Coded Decimal Value of Days bits, 10s place digit; contains a value of 0 to 3
bit 11-8

DAY01<3:0>: Binary-Coded Decimal Value of Days bits, 1s place digit; contains a value from 0 to 9

bit 7-3

Unimplemented: Read as ‘0’

bit 2-0

WDAY01<2:0>: Binary-Coded Decimal Value of Weekdays bits; contains a value from 0 to 6

Note:

This register is only writable when RTCWREN = 1 (RTCCON<3>).

DS60001168K-page 208

 2011-2018 Microchip Technology Inc.

PIC32MX1XX/2XX 28/36/44-PIN FAMILY
REGISTER 21-5:
Bit
Range
31:24
23:16
15:8
7:0

ALRMTIME: ALARM TIME VALUE REGISTER

Bit
31/23/15/7

Bit
30/22/14/6

Bit
29/21/13/5

Bit
28/20/12/4

Bit
27/19/11/3

Bit
26/18/10/2

Bit
25/17/9/1

Bit
24/16/8/0

U-0

U-0

R/W-x

R/W-x

R/W-x

R/W-x

R/W-x

R/W-x

—

—

U-0

R/W-x

—
U-0

HR10<1:0>
R/W-x

R/W-x

HR01<3:0>
R/W-x

R/W-x

MIN10<2:0>
R/W-x

—

R/W-x

R/W-x

R/W-x

MIN01<3:0>
R/W-x

R/W-x

R/W-x

SEC10<2:0>

R/W-x

R/W-x

SEC01<3:0>

U-0

U-0

U-0

U-0

U-0

U-0

U-0

U-0

—

—

—

—

—

—

—

—

Legend:
R = Readable bit

W = Writable bit

U = Unimplemented bit, read as ‘0’

-n = Value at POR

‘1’ = Bit is set

‘0’ = Bit is cleared

x = Bit is unknown

bit 31-30 Unimplemented: Read as ‘0’
bit 29-28 HR10<1:0>: Binary Coded Decimal value of hours bits, 10s place digit; contains a value from 0 to 2
bit 27-24 HR01<3:0>: Binary Coded Decimal value of hours bits, 1s place digit; contains a value from 0 to 9
bit 23

Unimplemented: Read as ‘0’

bit 22-20 MIN10<2:0>: Binary Coded Decimal value of minutes bits, 10s place digit; contains a value from 0 to 5
bit 19-16 MIN01<3:0>: Binary Coded Decimal value of minutes bits, 1s place digit; contains a value from 0 to 9
bit 15

Unimplemented: Read as ‘0’

bit 14-12 SEC10<2:0>: Binary Coded Decimal value of seconds bits, 10s place digit; contains a value from 0 to 5
bit 11-8

SEC01<3:0>: Binary Coded Decimal value of seconds bits, 1s place digit; contains a value from 0 to 9

bit 7-0

Unimplemented: Read as ‘0’

 2011-2018 Microchip Technology Inc.

DS60001168K-page 209

PIC32MX1XX/2XX 28/36/44-PIN FAMILY
REGISTER 21-6:
Bit
Range
31:24
23:16
15:8
7:0

ALRMDATE: ALARM DATE VALUE REGISTER

Bit
31/23/15/7

Bit
30/22/14/6

Bit
29/21/13/5

Bit
28/20/12/4

Bit
27/19/11/3

Bit
26/18/10/2

Bit
25/17/9/1

Bit
24/16/8/0

U-0

U-0

U-0

U-0

U-0

U-0

U-0

U-0

—

—

—

—

—

—

—

—

U-0

U-0

U-0

R/W-x

R/W-x

R/W-x

R/W-x

R/W-x

R/W-x

R/W-x

R/W-x

—

—

—

MONTH10

U-0

U-0

R/W-x

R/W-x

MONTH01<3:0>

—

—

U-0

U-0

U-0

DAY10<1:0>
U-0

U-0

—

—

—

—

—

R/W-x

R/W-x

DAY01<3:0>
R/W-x

R/W-x

WDAY01<2:0>

Legend:
R = Readable bit

W = Writable bit

U = Unimplemented bit, read as ‘0’

-n = Value at POR

‘1’ = Bit is set

‘0’ = Bit is cleared

x = Bit is unknown

bit 31-21 Unimplemented: Read as ‘0’
bit 20

MONTH10: Binary Coded Decimal value of months bits, 10s place digit; contains a value of 0 or 1

bit 19-16 MONTH01<3:0>: Binary Coded Decimal value of months bits, 1s place digit; contains a value from 0 to 9
bit 15-14 Unimplemented: Read as ‘0’
bit 13-12 DAY10<1:0>: Binary Coded Decimal value of days bits, 10s place digit; contains a value from 0 to 3
bit 11-8

DAY01<3:0>: Binary Coded Decimal value of days bits, 1s place digit; contains a value from 0 to 9

bit 7-3

Unimplemented: Read as ‘0’

bit 2-0

WDAY01<2:0>: Binary Coded Decimal value of weekdays bits; contains a value from 0 to 6

DS60001168K-page 210

 2011-2018 Microchip Technology Inc.

PIC32MX1XX/2XX 28/36/44-PIN FAMILY
22.0
Note:

10-BIT ANALOG-TO-DIGITAL
CONVERTER (ADC)
This data sheet summarizes the features
of the PIC32MX1XX/2XX 28/36/44-pin
Family of devices. It is not intended to be
a comprehensive reference source. To
complement the information in this data
sheet, refer to Section 17. “10-bit Analog-to-Digital
Converter
(ADC)”
(DS60001104), which is available from the
Documentation > Reference Manual
section of the Microchip PIC32 web site
(www.microchip.com/pic32).

The 10-bit Analog-to-Digital Converter (ADC) includes
the following features:
• Successive Approximation Register (SAR)
conversion
• Up to 1 Msps conversion speed

FIGURE 22-1:

• Up to 13 analog input pins
• External voltage reference input pins
• One unipolar, differential Sample and Hold
Amplifier (SHA)
• Automatic Channel Scan mode
• Selectable conversion trigger source
• 16-word conversion result buffer
• Selectable buffer fill modes
• Eight conversion result format options
• Operation during Sleep and Idle modes
A block diagram of the 10-bit ADC is illustrated in
Figure 22-1. Figure 22-2 illustrates a block diagram of
the ADC conversion clock period. The 10-bit ADC has
up to 13 analog input pins, designated AN0-AN12. In
addition, there are two analog input pins for external
voltage reference connections. These voltage
reference inputs may be shared with other analog input
pins and may be common to other analog module
references.

ADC1 MODULE BLOCK DIAGRAM
CTMUI(3)

VREF+(1)

AVDD

VREF-(1)

AVSS

AN0
AN12(2)

VCFG<2:0>

CTMUT(3)

ADC1BUF0

IVREF(4)

ADC1BUF1

Open(5)
S&H

Channel
Scan

VREFH

ADC1BUF2

VREFL

+
CH0SB<4:0>

CH0SA<4:0>

-

SAR ADC

CSCNA
AN1
ADC1BUFE

VREFL

ADC1BUFF

CH0NA CH0NB

Alternate
Input Selection

Note 1: VREF+ and VREF- inputs can be multiplexed with other analog inputs.
2:

AN8 is only available on 44-pin devices. AN6, AN7, and AN12 are not available on 28-pin devices.

3:

Connected to the CTMU module. See Section 25.0 “Charge Time Measurement Unit (CTMU)” for more
information.

4:

Internal precision voltage reference (1.2V).

5:

This selection is only used with CTMU capacitive and time measurement.

 2011-2018 Microchip Technology Inc.

DS60001168K-page 211

PIC32MX1XX/2XX 28/36/44-PIN FAMILY
FIGURE 22-2:

ADC CONVERSION CLOCK PERIOD BLOCK DIAGRAM
ADRC

FRC(1)

Div 2

1

TAD
ADCS<7:0>

0

8
ADC Conversion
Clock Multiplier

TPB(2)

2, 4,..., 512

Note 1:
2:

See Section 30.0 “Electrical Characteristics” for the exact FRC clock value.
Refer to Figure 8-1 in Section 8.0 “Oscillator Configuration” for more information.

DS60001168K-page 212

 2011-2018 Microchip Technology Inc.

ADC Control Registers

Register
Name

9010 AD1CON2(1)
AD1CON3(1)

9040 AD1CHS(1)
9050 AD1CSSL(1)
9070 ADC1BUF0
9080 ADC1BUF1
9090 ADC1BUF2
90A0 ADC1BUF3
90B0 ADC1BUF4
90C0 ADC1BUF5
90D0 ADC1BUF6
90E0 ADC1BUF7

DS60001168K-page 213

90F0 ADC1BUF8
9100 ADC1BUF9
9110 ADC1BUFA

31/15

30/14

31:16

—

15:0

ON

31:16

—

15:0
31:16

29/13

28/12

27/11

26/10

—

—

—

—

—

—

SIDL

—

—

—

—

—

—

—

—

—

—

—

OFFCAL

—

CSCNA

—

—

BUFS

—

—

—

—

—

—

—

VCFG<2:0>
—

—

—

15:0

ADRC

—

—

31:16

CH0NB

—

—

—

15:0

—

—

—

—

25/9

24/8

23/7

—

—

—

22/6

21/5

—

—

18/2

17/1

16/0

—

—

—

—

—

—

ASAM

SAMP

DONE

0000

—

—

—

—

—

—

0000

BUFM

ALTS

0000

—

—

—

—

—

0000

CH0NA

—

—

—

—

—

—

—

SSRC<2:0>

SMPI<3:0>
—

—

ADCS<7:0>

CH0SB<3:0>
—

19/3

CLRASAM

FORM<2:0>

SAMC<4:0>
—

20/4

—

—

All Resets

Bits

9000 AD1CON1(1)

9020

ADC REGISTER MAP
Bit Range

Virtual Address
(BF80_#)

TABLE 22-1:

0000
CH0SA<3:0>

—

0000

—

—

0000
—

0000

31:16

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

0000

15:0

CSSL15

CSSL14

CSSL13

CSSL12

CSSL11

CSSL10

CSSL9

CSSL8

CSSL7

CSSL6

CSSL5

CSSL4

CSSL3

CSSL2

CSSL1

CSSL0

0000

31:16
15:0
31:16
15:0
31:16
15:0
31:16
15:0
31:16
15:0
31:16
15:0
31:16
15:0
31:16
15:0
31:16
15:0
31:16
15:0
31:16
15:0

ADC Result Word 0 (ADC1BUF0<31:0>)
ADC Result Word 1 (ADC1BUF1<31:0>)
ADC Result Word 2 (ADC1BUF2<31:0>)
ADC Result Word 3 (ADC1BUF3<31:0>)
ADC Result Word 4 (ADC1BUF4<31:0>)
ADC Result Word 5 (ADC1BUF5<31:0>)
ADC Result Word 6 (ADC1BUF6<31:0>)
ADC Result Word 7 (ADC1BUF7<31:0>)
ADC Result Word 8 (ADC1BUF8<31:0>)
ADC Result Word 9 (ADC1BUF9<31:0>)
ADC Result Word A (ADC1BUFA<31:0>)

Legend:

x = unknown value on Reset; — = unimplemented, read as ‘0’. Reset values are shown in hexadecimal.

Note 1:

This register has corresponding CLR, SET and INV registers at its virtual address, plus offsets of 0x4, 0x8 and 0xC, respectively. See Section 11.2 “CLR, SET and INV Registers” for details.

0000
0000
0000
0000
0000
0000
0000
0000
0000
0000
0000
0000
0000
0000
0000
0000
0000
0000
0000
0000
0000
0000

PIC32MX1XX/2XX 28/36/44-PIN FAMILY

 2011-2018 Microchip Technology Inc.

22.1

Register
Name

9120 ADC1BUFB
9130 ADC1BUFC
9140 ADC1BUFD
9150 ADC1BUFE
9160 ADC1BUFF

31:16
15:0
31:16
15:0
31:16
15:0
31:16
15:0
31:16
15:0

31/15

30/14

29/13

28/12

27/11

26/10

25/9

24/8

23/7

22/6

21/5

20/4

19/3

18/2

17/1

16/0

ADC Result Word B (ADC1BUFB<31:0>)
ADC Result Word C (ADC1BUFC<31:0>)
ADC Result Word D (ADC1BUFD<31:0>)
ADC Result Word E (ADC1BUFE<31:0>)
ADC Result Word F (ADC1BUFF<31:0>)

Legend:

x = unknown value on Reset; — = unimplemented, read as ‘0’. Reset values are shown in hexadecimal.

Note 1:

This register has corresponding CLR, SET and INV registers at its virtual address, plus offsets of 0x4, 0x8 and 0xC, respectively. See Section 11.2 “CLR, SET and INV Registers” for details.

All Resets

Bits
Bit Range

Virtual Address
(BF80_#)

ADC REGISTER MAP (CONTINUED)

0000
0000
0000
0000
0000
0000
0000
0000
0000
0000

 2011-2018 Microchip Technology Inc.

PIC32MX1XX/2XX 28/36/44-PIN FAMILY

DS60001168K-page 214

TABLE 22-1:

PIC32MX1XX/2XX 28/36/44-PIN FAMILY
REGISTER 22-1:
Bit
Range
31:24
23:16
15:8
7:0

AD1CON1: ADC CONTROL REGISTER 1

Bit
31/23/15/7

Bit
30/22/14/6

Bit
29/21/13/5

Bit
Bit
28/20/12/4 27/19/11/3

U-0

U-0

U-0

U-0

—

—

—

—

U-0

U-0

U-0

U-0

Bit
26/18/10/2

Bit
25/17/9/1

Bit
24/16/8/0

U-0

U-0

U-0

U-0

—

—

—

—

U-0

U-0

U-0

U-0

—

—

—

—

—

—

—

—

R/W-0
(1)

U-0

R/W-0

U-0

U-0

R/W-0

R/W-0

R/W-0

—

SIDL

—

—

R/W-0

R/W-0

R/W-0

R/W-0

U-0

R/W-0

CLRASAM

—

ASAM

ON

SSRC<2:0>

FORM<2:0>
R/W-0, HSC
(2)

SAMP

R/C-0, HSC
(3)

DONE

Legend:
R = Readable bit

W = Writable bit

U = Unimplemented bit, read as ‘0’

-n = Value at POR

‘1’ = Bit is set

‘0’ = Bit is cleared

x = Bit is unknown

bit 31-16 Unimplemented: Read as ‘0’
bit 15

ON: ADC Operating Mode bit(1)
1 = ADC module is operating
0 = ADC module is not operating

bit 14

Unimplemented: Read as ‘0’

bit 13

SIDL: Stop in Idle Mode bit
1 = Discontinue module operation when device enters Idle mode
0 = Continue module operation when the device enters Idle mode

bit 12-11 Unimplemented: Read as ‘0’
bit 10-8

FORM<2:0>: Data Output Format bits
111 = Signed Fractional 32-bit (DOUT = sddd dddd dd00 0000 0000 0000 0000)
110 = Fractional 32-bit (DOUT = dddd dddd dd00 0000 0000 0000 0000 0000)
101 = Signed Integer 32-bit (DOUT = ssss ssss ssss ssss ssss sssd dddd dddd)
100 = Integer 32-bit (DOUT = 0000 0000 0000 0000 0000 00dd dddd dddd)
011 = Signed Fractional 16-bit (DOUT = 0000 0000 0000 0000 sddd dddd dd00 0000)
010 = Fractional 16-bit (DOUT = 0000 0000 0000 0000 dddd dddd dd00 0000)
001 = Signed Integer 16-bit (DOUT = 0000 0000 0000 0000 ssss sssd dddd dddd)
000 =Integer 16-bit (DOUT = 0000 0000 0000 0000 0000 00dd dddd dddd)

bit 7-5

SSRC<2:0>: Conversion Trigger Source Select bits
111 = Internal counter ends sampling and starts conversion (auto convert)
110 = Reserved
101 = Reserved
100 = Reserved
011 = CTMU ends sampling and starts conversion
010 = Timer 3 period match ends sampling and starts conversion
001 = Active transition on INT0 pin ends sampling and starts conversion
000 = Clearing SAMP bit ends sampling and starts conversion

Note 1:

When using 1:1 PBCLK divisor, the user’s software should not read/write the peripheral’s SFRs in the
SYSCLK cycle immediately following the instruction that clears the module’s ON bit.
If ASAM = 0, software can write a ‘1’ to start sampling. This bit is automatically set by hardware if
ASAM = 1. If SSRC = 0, software can write a ‘0’ to end sampling and start conversion. If SSRC ‘0’, this
bit is automatically cleared by hardware to end sampling and start conversion.
This bit is automatically set by hardware when analog-to-digital conversion is complete. Software can
write a ‘0’ to clear this bit (a write of ‘1’ is not allowed). Clearing this bit does not affect any operation
already in progress. This bit is automatically cleared by hardware at the start of a new conversion.

2:

3:

 2011-2018 Microchip Technology Inc.

DS60001168K-page 215

PIC32MX1XX/2XX 28/36/44-PIN FAMILY
REGISTER 22-1:

AD1CON1: ADC CONTROL REGISTER 1 (CONTINUED)

bit 4

CLRASAM: Stop Conversion Sequence bit (when the first ADC interrupt is generated)
1 = Stop conversions when the first ADC interrupt is generated. Hardware clears the ASAM bit when the
ADC interrupt is generated.
0 = Normal operation, buffer contents will be overwritten by the next conversion sequence

bit 3

Unimplemented: Read as ‘0’

bit 2

ASAM: ADC Sample Auto-Start bit
1 = Sampling begins immediately after last conversion completes; SAMP bit is automatically set.
0 = Sampling begins when SAMP bit is set

bit 1

SAMP: ADC Sample Enable bit(2)
1 = The ADC sample and hold amplifier is sampling
0 = The ADC sample/hold amplifier is holding
When ASAM = 0, writing ‘1’ to this bit starts sampling.
When SSRC = 000, writing ‘0’ to this bit will end sampling and start conversion.

bit 0

DONE: Analog-to-Digital Conversion Status bit(3)
1 = Analog-to-digital conversion is done
0 = Analog-to-digital conversion is not done or has not started
Clearing this bit will not affect any operation in progress.

Note 1:

When using 1:1 PBCLK divisor, the user’s software should not read/write the peripheral’s SFRs in the
SYSCLK cycle immediately following the instruction that clears the module’s ON bit.
If ASAM = 0, software can write a ‘1’ to start sampling. This bit is automatically set by hardware if
ASAM = 1. If SSRC = 0, software can write a ‘0’ to end sampling and start conversion. If SSRC ‘0’, this
bit is automatically cleared by hardware to end sampling and start conversion.
This bit is automatically set by hardware when analog-to-digital conversion is complete. Software can
write a ‘0’ to clear this bit (a write of ‘1’ is not allowed). Clearing this bit does not affect any operation
already in progress. This bit is automatically cleared by hardware at the start of a new conversion.

2:

3:

DS60001168K-page 216

 2011-2018 Microchip Technology Inc.

PIC32MX1XX/2XX 28/36/44-PIN FAMILY
REGISTER 22-2:
Bit
Range
31:24
23:16
15:8

AD1CON2: ADC CONTROL REGISTER 2

Bit
31/23/15/7

Bit
30/22/14/6

Bit
29/21/13/5

U-0

U-0

U-0

U-0

—

—

—

—

U-0

U-0

U-0

U-0

Bit
26/18/10/2

Bit
25/17/9/1

Bit
24/16/8/0

U-0

U-0

U-0

U-0

—

—

—

—

U-0

U-0

U-0

U-0

—

—

—

—

—

—

—

—

R/W-0

R/W-0

R/W-0

R/W-0

U-0

R/W-0

U-0

U-0

OFFCAL

—

CSCNA

—

—

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

BUFM

ALTS

VCFG<2:0>

7:0

Bit
Bit
28/20/12/4 27/19/11/3

R-0

U-0

BUFS

—

R/W-0

SMPI<3:0>

Legend:
R = Readable bit
-n = Value at POR

W = Writable bit
‘1’ = Bit is set

U = Unimplemented bit, read as ‘0’
‘0’ = Bit is cleared
x = Bit is unknown

bit 31-16 Unimplemented: Read as ‘0’
bit 15-13 VCFG<2:0>: Voltage Reference Configuration bits

000
001
010
011
1xx
bit 12

bit 11
bit 10

bit 9-8
bit 7

bit 6
bit 5-2

VREFH

VREFL

AVDD
External VREF+ pin
AVDD
External VREF+ pin
AVDD

AVss
AVSS
External VREF- pin
External VREF- pin
AVSS

OFFCAL: Input Offset Calibration Mode Select bit
1 = Enable Offset Calibration mode
Positive and negative inputs of the sample and hold amplifier are connected to VREFL
0 = Disable Offset Calibration mode
The inputs to the sample and hold amplifier are controlled by AD1CHS or AD1CSSL
Unimplemented: Read as ‘0’
CSCNA: Input Scan Select bit
1 = Scan inputs
0 = Do not scan inputs
Unimplemented: Read as ‘0’
BUFS: Buffer Fill Status bit
Only valid when BUFM = 1.
1 = ADC is currently filling buffer 0x8-0xF, user should access data in 0x0-0x7
0 = ADC is currently filling buffer 0x0-0x7, user should access data in 0x8-0xF
Unimplemented: Read as ‘0’
SMPI<3:0>: Sample/Convert Sequences Per Interrupt Selection bits
1111 = Interrupts at the completion of conversion for each 16th sample/convert sequence
1110 = Interrupts at the completion of conversion for each 15th sample/convert sequence
•
•
•

bit 1

bit 0

0001 = Interrupts at the completion of conversion for each 2nd sample/convert sequence
0000 = Interrupts at the completion of conversion for each sample/convert sequence
BUFM: ADC Result Buffer Mode Select bit
1 = Buffer configured as two 8-word buffers, ADC1BUF7-ADC1BUF0, ADC1BUFF-ADCBUF8
0 = Buffer configured as one 16-word buffer ADC1BUFF-ADC1BUF0
ALTS: Alternate Input Sample Mode Select bit
1 = Uses Sample A input multiplexer settings for first sample, then alternates between Sample B and
Sample A input multiplexer settings for all subsequent samples
0 = Always use Sample A input multiplexer settings

 2011-2018 Microchip Technology Inc.

DS60001168K-page 217

PIC32MX1XX/2XX 28/36/44-PIN FAMILY
REGISTER 22-3:
Bit
Range
31:24
23:16
15:8
7:0

AD1CON3: ADC CONTROL REGISTER 3

Bit
31/23/15/7

Bit
30/22/14/6

Bit
29/21/13/5

Bit
Bit
28/20/12/4 27/19/11/3

Bit
26/18/10/2

Bit
25/17/9/1

Bit
24/16/8/0

U-0

U-0

U-0

U-0

—

—

—

—

U-0

U-0

U-0

U-0

—

—

—

—

U-0

U-0

U-0

—

—

—

U-0

U-0

U-0

U-0

U-0

—

—

—

—

R/W-0

U-0

U-0

—

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

ADRC

—

—

R/W-0

R/W-0

R/W-0

R/W

R/W-0

SAMC<4:0>(1)
R/W-0

R/W-0

R/W-0

ADCS<7:0>(2)

Legend:
R = Readable bit

W = Writable bit

U = Unimplemented bit, read as ‘0’

-n = Value at POR

‘1’ = Bit is set

‘0’ = Bit is cleared

x = Bit is unknown

bit 31-16 Unimplemented: Read as ‘0’
bit 15

ADRC: ADC Conversion Clock Source bit
1 = Clock derived from FRC
0 = Clock derived from Peripheral Bus Clock (PBCLK)

bit 14-13 Unimplemented: Read as ‘0’
bit 12-8

SAMC<4:0>: Auto-Sample Time bits(1)
11111 = 31 TAD
•
•
•
00001 = 1 TAD
00000 = 0 TAD (Not allowed)

bit 7-0

ADCS<7:0>: ADC Conversion Clock Select bits(2)
11111111 =TPB • 2 • (ADCS<7:0> + 1) = 512 • TPB = TAD
•
•
•
00000001 =TPB • 2 • (ADCS<7:0> + 1) = 4 • TPB = TAD
00000000 =TPB • 2 • (ADCS<7:0> + 1) = 2 • TPB = TAD

Note 1:
2:

This bit is only used if the SSRC<2:0> bits (AD1CON1<7:5>) = 111.
This bit is not used if the ADRC (AD1CON3<15>) bit = 1.

DS60001168K-page 218

 2011-2018 Microchip Technology Inc.

PIC32MX1XX/2XX 28/36/44-PIN FAMILY
REGISTER 22-4:
Bit
Range
31:24
23:16
15:8
7:0

AD1CHS: ADC INPUT SELECT REGISTER

Bit
31/23/15/7

Bit
30/22/14/6

Bit
29/21/13/5

Bit
Bit
28/20/12/4 27/19/11/3

R/W-0

U-0

U-0

U-0

CH0NB

—

—

—

R/W-0

U-0

U-0

U-0

Bit
26/18/10/2

Bit
25/17/9/1

Bit
24/16/8/0

R/W-0

R/W-0

R/W-0

R/W-0

CH0SB<3:0>
R/W-0

R/W-0

R/W-0

R/W-0

CH0NA

—

—

—

U-0

U-0

U-0

U-0

U-0

U-0

CH0SA<3:0>
U-0

—

—

—

—

—

—

—

—

U-0

U-0

U-0

U-0

U-0

U-0

U-0

U-0

—

—

—

—

—

—

—

—

U-0

Legend:
R = Readable bit

W = Writable bit

U = Unimplemented bit, read as ‘0’

-n = Value at POR

‘1’ = Bit is set

‘0’ = Bit is cleared

x = Bit is unknown

bit 31

CH0NB: Negative Input Select bit for Sample B
1 = Channel 0 negative input is AN1
0 = Channel 0 negative input is VREFL

bit 30-28

Unimplemented: Read as ‘0’

bit 27-24

CH0SB<3:0>: Positive Input Select bits for Sample B
1111 = Channel 0 positive input is Open(1)
1110 = Channel 0 positive input is IVREF(2)
1101 = Channel 0 positive input is CTMU temperature sensor (CTMUT)(3)
1100 = Channel 0 positive input is AN12(4)
•
•
•
0001 = Channel 0 positive input is AN1
0000 = Channel 0 positive input is AN0

bit 23

CH0NA: Negative Input Select bit for Sample A Multiplexer Setting(2)
1 = Channel 0 negative input is AN1
0 = Channel 0 negative input is VREFL

bit 22-20

Unimplemented: Read as ‘0’

bit 19-16

CH0SA<3:0>: Positive Input Select bits for Sample A Multiplexer Setting
1111 = Channel 0 positive input is Open(1)
1110 = Channel 0 positive input is IVREF(2)
1101 = Channel 0 positive input is CTMU temperature (CTMUT)(3)
1100 = Channel 0 positive input is AN12(4)
•
•
•
0001 = Channel 0 positive input is AN1
0000 = Channel 0 positive input is AN0

bit 15-0

Unimplemented: Read as ‘0’

Note 1:
2:
3:
4:

This selection is only used with CTMU capacitive and time measurement.
See Section 24.0 “Comparator Voltage Reference (CVREF)” for more information.
See Section 25.0 “Charge Time Measurement Unit (CTMU)” for more information.
AN12 is only available on 44-pin devices. AN6-AN8 are not available on 28-pin devices.

 2011-2018 Microchip Technology Inc.

DS60001168K-page 219

PIC32MX1XX/2XX 28/36/44-PIN FAMILY
REGISTER 22-5:
Bit
Range
31:24
23:16
15:8
7:0

AD1CSSL: ADC INPUT SCAN SELECT REGISTER

Bit
31/23/15/7

Bit
30/22/14/6

Bit
29/21/13/5

Bit
28/20/12/4

Bit
27/19/11/3

Bit
26/18/10/2

Bit
25/17/9/1

Bit
24/16/8/0

U-0

U-0

U-0

U-0

U-0

U-0

U-0

U-0

—

—

—

—

—

—

—

—

U-0

U-0

U-0

U-0

U-0

U-0

U-0

U-0

—

—

—

—

—

—

—

—

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

CSSL15

CSSL14

CSSL13

CSSL12

CSSL11

CSSL10

CSSL9

CSSL8

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

CSSL7

CSSL6

CSSL5

CSSL4

CSSL3

CSSL2

CSSL1

CSSL0

Legend:
R = Readable bit

W = Writable bit

U = Unimplemented bit, read as ‘0’

-n = Value at POR

‘1’ = Bit is set

‘0’ = Bit is cleared

x = Bit is unknown

bit 31-16 Unimplemented: Read as ‘0’
bit 15-0

CSSL<15:0>: ADC Input Pin Scan Selection bits(1,2)
1 = Select ANx for input scan
0 = Skip ANx for input scan

Note 1:

CSSL = ANx, where ‘x’ = 0-12; CSSL13 selects CTMU input for scan; CSSL14 selects IVREF for scan;
CSSL15 selects VSS for scan.
On devices with less than 13 analog inputs, all CSSLx bits can be selected; however, inputs selected for
scan without a corresponding input on the device will convert to VREFL.

2:

DS60001168K-page 220

 2011-2018 Microchip Technology Inc.

PIC32MX1XX/2XX 28/36/44-PIN FAMILY
23.0
Note:

Following are some of the key features of this module:

COMPARATOR

• Selectable inputs available include:
- Analog inputs multiplexed with I/O pins
- On-chip internal absolute voltage reference
(IVREF)
- Comparator voltage reference (CVREF)
• Outputs can be Inverted
• Selectable interrupt generation

This data sheet summarizes the features
of the PIC32MX1XX/2XX 28/36/44-pin
Family of devices. It is not intended to be
a comprehensive reference source. To
complement the information in this data
sheet,
refer
to
Section
19.
“Comparator” (DS60001110), which is
available from the Documentation >
Reference Manual section of the
Microchip
PIC32
web
site
(www.microchip.com/pic32).

A block diagram of the comparator module is provided
in Figure 23-1.

The Analog Comparator module contains three
comparators that can be configured in a variety of
ways.

FIGURE 23-1:

COMPARATOR BLOCK DIAGRAM
CCH<1:0>

C1INB
C1INC

COE
C1IND

CMP1

C1OUT

CREF
CMSTAT
CM1CON

CPOL

C1INA

CCH<1:0>

C2INB

To CTMU module
(Pulse Generator)

C2INC
COE
C2IND

CMP2

C2OUT

CREF
CMSTAT
CM2CON

CPOL

C2INA

CCH<1:0>

C3INB
C3INC

COE
C3IND
CREF
C3INA

CMP3

CPOL
CVREF(1)

IVREF(2)

 2011-2018 Microchip Technology Inc.

Note 1:
2:

C3OUT

CMSTAT
CM3CON

Internally connected. See Section 24.0 “Comparator Voltage Reference
(CVREF)” for more information.
Internal precision voltage reference (1.2V).

DS60001168K-page 221

Comparator Control Registers

Virtual Address
(BF80_#)

TABLE 23-1:

A010 CM2CON
A020 CM3CON
CMSTAT

Legend:
Note 1:

31/15

30/14

29/13

28/12

27/11

26/10

25/9

24/8

23/7

22/6

21/5

—

20/4

19/3

18/2

17/1

16/0

All Resets

Bit Range

Register
Name(1)

Bits

A000 CM1CON

A060

COMPARATOR REGISTER MAP

31:16

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

0000

15:0

ON

COE

CPOL

31:16

—

—

—

—
—

—
—

—
—

—
—

COUT
—

EVPOL<1:0>
—
—

—
—

CREF
—

—
—

—
—

CCH<1:0>
—
—

00C3
0000

—
—

—
—

—
—

—
—

COUT
—

EVPOL<1:0>
—
—

—
—

CREF
—

—
—

—
—

CCH<1:0>
—
—

00C3
0000

—
—

—
—

—
—

—
—

COUT
—

EVPOL<1:0>
—
—

—
—

CREF
—

—
—

—
—

CCH<1:0>
—
—

00C3
0000

—

—

—

—

C3OUT

15:0

ON

COE

CPOL

31:16

—

—

—

15:0

ON

COE

CPOL

31:16

—

—

—

15:0
—
—
SIDL
—
—
—
—
—
x = unknown value on Reset; — = unimplemented, read as ‘0’. Reset values are shown in hexadecimal.

—

C2OUT

C1OUT

0000

All registers in this table have corresponding CLR, SET and INV registers at their virtual addresses, plus offsets of 0x4, 0x8 and 0xC, respectively. See Section 11.2 “CLR, SET and INV Registers” for
more information.

 2011-2018 Microchip Technology Inc.

PIC32MX1XX/2XX 28/36/44-PIN FAMILY

DS60001168K-page 222

23.1

PIC32MX1XX/2XX 28/36/44-PIN FAMILY
REGISTER 23-1:
Bit
Range
31:24
23:16
15:8
7:0

CMXCON: COMPARATOR CONTROL REGISTER

Bit
31/23/15/7

Bit
30/22/14/6

Bit
29/21/13/5

U-0

U-0

U-0

U-0

—

—

—

—

U-0

U-0

U-0

U-0

—

—

R/W-0
(1)

R/W-0

ON

COE

R/W-1

R/W-1

Bit
Bit
28/20/12/4 27/19/11/3

—
R/W-0
(2)

CPOL

EVPOL<1:0>

Bit
26/18/10/2

Bit
25/17/9/1

Bit
24/16/8/0

U-0

U-0

U-0

U-0

—

—

—

—

U-0

U-0

U-0

U-0

—

—

—

—

—

U-0

U-0

U-0

U-0

R-0

—

—

—

—

COUT

U-0

R/W-0

U-0

U-0

R/W-1

R/W-1

—

CREF

—

—

CCH<1:0>

Legend:
R = Readable bit

W = Writable bit

U = Unimplemented bit, read as ‘0’

-n = Value at POR

‘1’ = Bit is set

‘0’ = Bit is cleared

x = Bit is unknown

bit 31-16 Unimplemented: Read as ‘0’
bit 15

ON: Comparator ON bit(1)
1 = Module is enabled. Setting this bit does not affect the other bits in this register
0 = Module is disabled and does not consume current. Clearing this bit does not affect the other bits in this
register

bit 14

COE: Comparator Output Enable bit
1 = Comparator output is driven on the output CxOUT pin
0 = Comparator output is not driven on the output CxOUT pin

bit 13

CPOL: Comparator Output Inversion bit(2)
1 = Output is inverted
0 = Output is not inverted

bit 12-9

Unimplemented: Read as ‘0’

bit 8

COUT: Comparator Output bit
1 = Output of the Comparator is a ‘1’
0 = Output of the Comparator is a ‘0’

bit 7-6

EVPOL<1:0>: Interrupt Event Polarity Select bits
11 = Comparator interrupt is generated on a low-to-high or high-to-low transition of the comparator output
10 = Comparator interrupt is generated on a high-to-low transition of the comparator output
01 = Comparator interrupt is generated on a low-to-high transition of the comparator output
00 = Comparator interrupt generation is disabled

bit 5

Unimplemented: Read as ‘0’

bit 4

CREF: Comparator Positive Input Configure bit
1 = Comparator non-inverting input is connected to the internal CVREF
0 = Comparator non-inverting input is connected to the CXINA pin

bit 3-2

Unimplemented: Read as ‘0’

bit 1-0

CCH<1:0>: Comparator Negative Input Select bits for Comparator
11 = Comparator inverting input is connected to the IVREF
10 = Comparator inverting input is connected to the CxIND pin
01 = Comparator inverting input is connected to the CxINC pin
00 = Comparator inverting input is connected to the CxINB pin

Note 1:

When using the 1:1 PBCLK divisor, the user’s software should not read/write the peripheral’s SFRs in the
SYSCLK cycle immediately following the instruction that clears the module’s ON bit.
Setting this bit will invert the signal to the comparator interrupt generator as well. This will result in an
interrupt being generated on the opposite edge from the one selected by EVPOL<1:0>.

2:

 2011-2018 Microchip Technology Inc.

DS60001168K-page 223

PIC32MX1XX/2XX 28/36/44-PIN FAMILY
REGISTER 23-2:
Bit
Range
31:24
23:16
15:8
7:0

CMSTAT: COMPARATOR STATUS REGISTER

Bit
31/23/15/7

Bit
30/22/14/6

Bit
29/21/13/5

Bit
Bit
28/20/12/4 27/19/11/3

Bit
26/18/10/2

Bit
25/17/9/1

Bit
24/16/8/0

U-0

U-0

U-0

U-0

—

—

—

—

U-0

U-0

U-0

U-0

—

—

—

—

U-0

U-0

U-0

—

—

—

U-0

U-0

U-0

U-0

U-0

—

—

—

—

—

U-0

U-0

—

—

R/W-0

U-0

U-0

U-0

U-0

U-0

SIDL

—

—

—

—

—

U-0

U-0

—

—

U-0

U-0

U-0

R-0

R-0

R-0

—

—

—

C3OUT

C2OUT

C1OUT

Legend:
R = Readable bit

W = Writable bit

U = Unimplemented bit, read as ‘0’

-n = Value at POR

‘1’ = Bit is set

‘0’ = Bit is cleared

x = Bit is unknown

bit 31-14 Unimplemented: Read as ‘0’
bit 13

SIDL: Stop in Idle Control bit
1 = All Comparator modules are disabled when the device enters Idle mode
0 = All Comparator modules continue to operate when the device enters Idle mode

bit 12-3

Unimplemented: Read as ‘0’

bit 2

C3OUT: Comparator Output bit
1 = Output of Comparator 3 is a ‘1’
0 = Output of Comparator 3 is a ‘0’

bit 1

C2OUT: Comparator Output bit
1 = Output of Comparator 2 is a ‘1’
0 = Output of Comparator 2 is a ‘0’

bit 0

C1OUT: Comparator Output bit
1 = Output of Comparator 1 is a ‘1’
0 = Output of Comparator 1 is a ‘0’

DS60001168K-page 224

 2011-2018 Microchip Technology Inc.

PIC32MX1XX/2XX 28/36/44-PIN FAMILY
24.0
Note:

The resistor ladder is segmented to provide two ranges
of voltage reference values and has a power-down
function to conserve power when the reference is not
being used. The module’s supply reference can be provided from either device VDD/VSS or an external
voltage reference. The CVREF output is available for
the comparators and typically available for pin output.

COMPARATOR VOLTAGE
REFERENCE (CVREF)
This data sheet summarizes the features
of the PIC32MX1XX/2XX 28/36/44-pin
Family of devices. It is not intended to be
a comprehensive reference source. To
complement the information in this data
sheet, refer to Section 20. “Comparator
Voltage
Reference
(CVREF)”
(DS60001109), which is available from the
Documentation > Reference Manual
section of the Microchip PIC32 web site
(www.microchip.com/pic32).

The comparator voltage reference has the following
features:
• High and low range selection
• Sixteen output levels available for each range
• Internally connected to comparators to conserve
device pins
• Output can be connected to a pin

The CVREF module is a 16-tap, resistor ladder network
that provides a selectable reference voltage. Although
its primary purpose is to provide a reference for the
analog comparators, it also may be used independently
of them.

FIGURE 24-1:
VREF+
AVDD

A block diagram of the module is shown in Figure 24-1.

COMPARATOR VOLTAGE REFERENCE BLOCK DIAGRAM
CVRSS = 1
CVRSRC
8R

CVRSS = 0

CVR<3:0>

CVREF

R

CVREN

R
R
16-to-1 MUX

R
16 Steps

R

CVREFOUT
CVRCON

R
R

CVRR
VREFAVSS

 2011-2018 Microchip Technology Inc.

8R
CVRSS = 1

CVRSS = 0

DS60001168K-page 225

Comparator Voltage Reference Control Register

Virtual Address
(BF80_#)

TABLE 24-1:

Legend:
1:

31/15

30/14

29/13

28/12

27/11

26/10

25/9

24/8

23/7

31:16

—

—

—

—

—

—

—

—

—

—

15:0

ON

—

CVROE

—
—
—
—
—
—
—
x = unknown value on Reset; — = unimplemented, read as ‘0’. Reset values are shown in hexadecimal.

22/6

21/5

20/4

19/3

18/2

17/1

16/0

—

—

—

—

—

—

CVRR

CVRSS

CVR<3:0>

All Resets

Register
Name(1)

Bit Range

Bits

9800 CVRCON

Note

COMPARATOR VOLTAGE REFERENCE REGISTER MAP

0000
0000

All registers in this table have corresponding CLR, SET and INV registers at their virtual addresses, plus offsets of 0x4, 0x8 and 0xC, respectively. See Section 11.2 “CLR, SET and INV Registers” for
more information.

 2011-2018 Microchip Technology Inc.

PIC32MX1XX/2XX 28/36/44-PIN FAMILY

DS60001168K-page 226

24.1

PIC32MX1XX/2XX 28/36/44-PIN FAMILY
REGISTER 24-1:
Bit
Range
31:24
23:16
15:8
7:0

CVRCON: COMPARATOR VOLTAGE REFERENCE CONTROL REGISTER

Bit
31/23/15/7

Bit
30/22/14/6

Bit
29/21/13/5

Bit
28/20/12/4

Bit
27/19/11/3

Bit
26/18/10/2

Bit
25/17/9/1

Bit
24/16/8/0

U-0

U-0

U-0

U-0

U-0

U-0

U-0

U-0

—

—

—

—

—

—

—

—

U-0

U-0

U-0

U-0

U-0

U-0

U-0

U-0

—

—

—

—

—

—

—

—

R/W-0
(1)

U-0

U-0

U-0

U-0

U-0

U-0

U-0

—

—

—

—

—

—

—

U-0

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

—

CVROE

CVRR

CVRSS

ON

CVR<3:0>

Legend:
R = Readable bit

W = Writable bit

U = Unimplemented bit, read as ‘0’

-n = Value at POR

‘1’ = Bit is set

‘0’ = Bit is cleared

x = Bit is unknown

bit 31-16 Unimplemented: Read as ‘0’
bit 15

ON: Comparator Voltage Reference On bit(1)
1 = Module is enabled
Setting this bit does not affect other bits in the register.
0 = Module is disabled and does not consume current.
Clearing this bit does not affect the other bits in the register.

bit 14-7

Unimplemented: Read as ‘0’

bit 6

CVROE: CVREFOUT Enable bit
1 = Voltage level is output on CVREFOUT pin
0 = Voltage level is disconnected from CVREFOUT pin

bit 5

CVRR: CVREF Range Selection bit
1 = 0 to 0.67 CVRSRC, with CVRSRC/24 step size
0 = 0.25 CVRSRC to 0.75 CVRSRC, with CVRSRC/32 step size

bit 4

CVRSS: CVREF Source Selection bit
1 = Comparator voltage reference source, CVRSRC = (VREF+) – (VREF-)
0 = Comparator voltage reference source, CVRSRC = AVDD – AVSS

bit 3-0

CVR<3:0>: CVREF Value Selection 0  CVR<3:0>  15 bits
When CVRR = 1:
CVREF = (CVR<3:0>/24)  (CVRSRC)
When CVRR = 0:
CVREF = 1/4  (CVRSRC) + (CVR<3:0>/32)  (CVRSRC)

Note 1: When using 1:1 PBCLK divisor, the user’s software should not read/write the peripheral’s SFRs in the
SYSCLK cycle immediately following the instruction that clears the module’s ON bit.

 2011-2018 Microchip Technology Inc.

DS60001168K-page 227

PIC32MX1XX/2XX 28/36/44-PIN FAMILY
NOTES:

DS60001168K-page 228

 2011-2018 Microchip Technology Inc.

PIC32MX1XX/2XX 28/36/44-PIN FAMILY
25.0

The CTMU module includes the following key features:

CHARGE TIME
MEASUREMENT UNIT (CTMU)

• Up to 13 channels available for capacitive or time
measurement input
• On-chip precision current source
• 16-edge input trigger sources
• Selection of edge or level-sensitive inputs
• Polarity control for each edge source
• Control of edge sequence
• Control of response to edges
• High precision time measurement
• Time delay of external or internal signal asynchronous to system clock
• Integrated temperature sensing diode
• Control of current source during auto-sampling
• Four current source ranges
• Time measurement resolution of one nanosecond

This data sheet summarizes the features
of the PIC32MX1XX/2XX 28/36/44-pin
Family of devices. It is not intended to be
a comprehensive reference source. To
complement the information in this data
sheet, refer to Section 37. “Charge Time
Measurement
Unit
(CTMU)”
(DS60001167), which is available from the
Documentation > Reference Manual
section of the Microchip PIC32 web site
(www.microchip.com/pic32).

Note:

The Charge Time Measurement Unit (CTMU) is a flexible analog module that has a configurable current
source with a digital configuration circuit built around it.
The CTMU can be used for differential time measurement between pulse sources and can be used for generating an asynchronous pulse. By working with other
on-chip analog modules, the CTMU can be used for
high resolution time measurement, measure capacitance, measure relative changes in capacitance or
generate output pulses with a specific time delay. The
CTMU is ideal for interfacing with capacitive-based
sensors.

FIGURE 25-1:

A block diagram of the CTMU is shown in Figure 25-1.

CTMU BLOCK DIAGRAM
CTMUCON1 or CTMUCON2
CTMUCON
ITRIM<5:0>
IRNG<1:0>
Current Source

CTED1

•
•
•

Edge
Control
Logic

CTED13
Timer1
OC1
IC1-IC3
CMP1-CMP3
PBCLK

EDG1STAT
EDG2STAT

TGEN
Current
Control
CTMUP

CTMUT
(To ADC)
Temperature
Sensor

CTMU
Control
Logic

ADC
Trigger

Pulse
Generator

CTPLS

CTMUI
(To ADC S&H capacitor)
C2INB
CDelay
Comparator 2
External capacitor
for pulse generation

Current Control Selection

TGEN

EDG1STAT, EDG2STAT

CTMUT

0

EDG1STAT = EDG2STAT

CTMUI

0

EDG1STAT  EDG2STAT

CTMUP

1

EDG1STAT  EDG2STAT

No Connect

1

EDG1STAT = EDG2STAT

 2011-2018 Microchip Technology Inc.

DS60001168K-page 229

CTMU Control Registers

A200 CTMUCON
Legend:
Note 1:

CTMU REGISTER MAP

31/15

30/14

29/13

31:16 EDG1MOD EDG1POL
15:0

ON

—

CTMUSIDL

28/12

27/11

26/10

25/9

24/8

23/7

22/6

EDG2STAT EDG1STAT EDG2MOD EDG2POL
EDG1SEL<3:0>
TGEN
EDGEN EDGSEQEN IDISSEN
CTTRIG

21/5

20/4

19/3

EDG2SEL<3:0>
ITRIM<5:0>

18/2

17/1

16/0

—
—
IRNG<1:0>

All Resets

Bit Range

Bits
Register
Name(1)

Virtual Address
(BF80_#)

TABLE 25-1:

0000
0000

x = unknown value on Reset; — = unimplemented, read as ‘0’. Reset values are shown in hexadecimal.
All registers in this table have corresponding CLR, SET and INV registers at its virtual address, plus an offset of 0x4, 0x8 and 0xC, respectively. See Section 11.2 “CLR, SET and INV Registers” for
more information.

 2011-2018 Microchip Technology Inc.

PIC32MX1XX/2XX 28/36/44-PIN FAMILY

DS60001168K-page 230

25.1

PIC32MX1XX/2XX 28/36/44-PIN FAMILY
REGISTER 25-1:
Bit
Range
31:24
23:16
15:8
7:0

CTMUCON: CTMU CONTROL REGISTER

Bit
31/23/15/7

Bit
30/22/14/6

Bit
29/21/13/5

R/W-0

R/W-0

R/W-0

Bit
Bit
28/20/12/4 27/19/11/3
R/W-0

EDG1MOD EDG1POL
R/W-0

R/W-0

R/W-0

Bit
26/18/10/2
R/W-0

EDG1SEL<3:0>
R/W-0

R/W-0

EDG2MOD EDG2POL

R/W-0

Bit
25/17/9/1

Bit
24/16/8/0

R/W-0

R/W-0

EDG2STAT EDG1STAT
R/W-0

U-0

EDG2SEL<3:0>

U-0

—

—

R/W-0

U-0

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

ON

—

CTMUSIDL

TGEN(1)

EDGEN

EDGSEQEN

IDISSEN(2)

CTTRIG

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

R/W-0

ITRIM<5:0>

Legend:
R = Readable bit
-n = Value at POR

W = Writable bit
‘1’ = Bit is set

IRNG<1:0>

U = Unimplemented bit, read as ‘0’
‘0’ = Bit is cleared
x = Bit is unknown

bit 31

EDG1MOD: Edge1 Edge Sampling Select bit
1 = Input is edge-sensitive
0 = Input is level-sensitive
bit 30
EDG1POL: Edge 1 Polarity Select bit
1 = Edge1 programmed for a positive edge response
0 = Edge1 programmed for a negative edge response
bit 29-26 EDG1SEL<3:0>: Edge 1 Source Select bits
1111 = C3OUT pin is selected
1110 = C2OUT pin is selected
1101 = C1OUT pin is selected
1100 = IC3 Capture Event is selected
1011 = IC2 Capture Event is selected
1010 = IC1 Capture Event is selected
1001 = CTED8 pin is selected
1000 = CTED7 pin is selected
0111 = CTED6 pin is selected
0110 = CTED5 pin is selected
0101 = CTED4 pin is selected
0100 = CTED3 pin is selected
0011 = CTED1 pin is selected
0010 = CTED2 pin is selected
0001 = OC1 Compare Event is selected
0000 = Timer1 Event is selected
bit 25
EDG2STAT: Edge2 Status bit
Indicates the status of Edge2 and can be written to control edge source
1 = Edge2 has occurred
0 = Edge2 has not occurred
Note 1:
2:

3:
4:

When this bit is set for Pulse Delay Generation, the EDG2SEL<3:0> bits must be set to ‘1110’ to select
C2OUT.
The ADC module Sample and Hold capacitor is not automatically discharged between sample/conversion
cycles. Software using the ADC as part of a capacitive measurement, must discharge the ADC capacitor
before conducting the measurement. The IDISSEN bit, when set to ‘1’, performs this function. The ADC
module must be sampling while the IDISSEN bit is active to connect the discharge sink to the capacitor
array.
Refer to the CTMU Current Source Specifications (Table 30-41) in Section 30.0 “Electrical
Characteristics” for current values.
This bit setting is not available for the CTMU temperature diode.

 2011-2018 Microchip Technology Inc.

DS60001168K-page 231

PIC32MX1XX/2XX 28/36/44-PIN FAMILY
REGISTER 25-1:

CTMUCON: CTMU CONTROL REGISTER (CONTINUED)

bit 24

EDG1STAT: Edge1 Status bit
Indicates the status of Edge1 and can be written to control edge source
1 = Edge1 has occurred
0 = Edge1 has not occurred
bit 23
EDG2MOD: Edge2 Edge Sampling Select bit
1 = Input is edge-sensitive
0 = Input is level-sensitive
bit 22
EDG2POL: Edge 2 Polarity Select bit
1 = Edge2 programmed for a positive edge response
0 = Edge2 programmed for a negative edge response
bit 21-18 EDG2SEL<3:0>: Edge 2 Source Select bits
1111 = C3OUT pin is selected
1110 = C2OUT pin is selected
1101 = C1OUT pin is selected
1100 = PBCLK clock is selected
1011 = IC3 Capture Event is selected
1010 = IC2 Capture Event is selected
1001 = IC1 Capture Event is selected
1000 = CTED13 pin is selected
0111 = CTED12 pin is selected
0110 = CTED11 pin is selected
0101 = CTED10 pin is selected
0100 = CTED9 pin is selected
0011 = CTED1 pin is selected
0010 = CTED2 pin is selected
0001 = OC1 Compare Event is selected
0000 = Timer1 Event is selected
bit 17-16 Unimplemented: Read as ‘0’
bit 15
ON: ON Enable bit
1 = Module is enabled
0 = Module is disabled
bit 14
Unimplemented: Read as ‘0’
bit 13
CTMUSIDL: Stop in Idle Mode bit
1 = Discontinue module operation when the device enters Idle mode
0 = Continue module operation when the device enters Idle mode
bit 12
TGEN: Time Generation Enable bit(1)
1 = Enables edge delay generation
0 = Disables edge delay generation
bit 11
EDGEN: Edge Enable bit
1 = Edges are not blocked
0 = Edges are blocked

Note 1:
2:

3:
4:

When this bit is set for Pulse Delay Generation, the EDG2SEL<3:0> bits must be set to ‘1110’ to select
C2OUT.
The ADC module Sample and Hold capacitor is not automatically discharged between sample/conversion
cycles. Software using the ADC as part of a capacitive measurement, must discharge the ADC capacitor
before conducting the measurement. The IDISSEN bit, when set to ‘1’, performs this function. The ADC
module must be sampling while the IDISSEN bit is active to connect the discharge sink to the capacitor
array.
Refer to the CTMU Current Source Specifications (Table 30-41) in Section 30.0 “Electrical
Characteristics” for current values.
This bit setting is not available for the CTMU temperature diode.

DS60001168K-page 232

 2011-2018 Microchip Technology Inc.

PIC32MX1XX/2XX 28/36/44-PIN FAMILY
REGISTER 25-1:
bit 10

CTMUCON: CTMU CONTROL REGISTER (CONTINUED)

EDGSEQEN: Edge Sequence Enable bit
1 = Edge1 must occur before Edge2 can occur
0 = No edge sequence is needed
IDISSEN: Analog Current Source Control bit(2)
1 = Analog current source output is grounded
0 = Analog current source output is not grounded
CTTRIG: Trigger Control bit
1 = Trigger output is enabled
0 = Trigger output is disabled
ITRIM<5:0>: Current Source Trim bits
011111 = Maximum positive change from nominal current
011110

bit 9

bit 8

bit 7-2

•
•
•

000001 = Minimum positive change from nominal current
000000 = Nominal current output specified by IRNG<1:0>
111111 = Minimum negative change from nominal current
•
•
•

100010
100001 = Maximum negative change from nominal current
IRNG<1:0>: Current Range Select bits(3)
11 = 100 times base current
10 = 10 times base current
01 = Base current level
00 = 1000 times base current(4)

bit 1-0

Note 1:
2:

3:
4:

When this bit is set for Pulse Delay Generation, the EDG2SEL<3:0> bits must be set to ‘1110’ to select
C2OUT.
The ADC module Sample and Hold capacitor is not automatically discharged between sample/conversion
cycles. Software using the ADC as part of a capacitive measurement, must discharge the ADC capacitor
before conducting the measurement. The IDISSEN bit, when set to ‘1’, performs this function. The ADC
module must be sampling while the IDISSEN bit is active to connect the discharge sink to the capacitor
array.
Refer to the CTMU Current Source Specifications (Table 30-41) in Section 30.0 “Electrical
Characteristics” for current values.
This bit setting is not available for the CTMU temperature diode.

 2011-2018 Microchip Technology Inc.

DS60001168K-page 233

PIC32MX1XX/2XX 28/36/44-PIN FAMILY
NOTES:

DS60001168K-page 234

 2011-2018 Microchip Technology Inc.

PIC32MX1XX/2XX 28/36/44-PIN FAMILY
26.0
Note:

POWER-SAVING FEATURES
This data sheet summarizes the features
of the PIC32MX1XX/2XX 28/36/44-pin
Family of devices. It is not intended to be
a comprehensive reference source. To
complement the information in this data
sheet, refer to Section 10. “PowerSaving Features” (DS60001130), which
is available from the Documentation >
Reference Manual section of the
Microchip
PIC32
web
site
(www.microchip.com/pic32).

This section describes power-saving features for the
PIC32MX1XX/2XX 28/36/44-pin Family. The PIC32
devices offer a total of nine methods and modes,
organized into two categories, that allow the user to
balance power consumption with device performance. In
all of the methods and modes described in this section,
power-saving is controlled by software.

26.1

Power Saving with CPU Running

When the CPU is running, power consumption can be
controlled by reducing the CPU clock frequency,
lowering the PBCLK and by individually disabling
modules. These methods are grouped into the
following categories:
• FRC Run mode: the CPU is clocked from the FRC
clock source with or without postscalers
• LPRC Run mode: the CPU is clocked from the
LPRC clock source
• SOSC Run mode: the CPU is clocked from the
SOSC clock source
In addition, the Peripheral Bus Scaling mode is available
where peripherals are clocked at the programmable
fraction of the CPU clock (SYSCLK).

26.2

CPU Halted Methods

The device supports two power-saving modes, Sleep
and Idle, both of which Halt the clock to the CPU. These
modes operate with all clock sources, as follows:
• POSC Idle mode: the system clock is derived from
the POSC. The system clock source continues to
operate. Peripherals continue to operate, but can
optionally be individually disabled.
• FRC Idle mode: the system clock is derived from
the FRC with or without postscalers. Peripherals
continue to operate, but can optionally be
individually disabled.
• SOSC Idle mode: the system clock is derived from
the SOSC. Peripherals continue to operate, but
can optionally be individually disabled.

 2011-2018 Microchip Technology Inc.

• LPRC Idle mode: the system clock is derived from
the LPRC. Peripherals continue to operate, but
can optionally be individually disabled. This is the
lowest power mode for the device with a clock
running.
• Sleep mode: the CPU, the system clock source
and any peripherals that operate from the system
clock source are Halted. Some peripherals can
operate in Sleep using specific clock sources.
This is the lowest power mode for the device.

26.3

Power-Saving Operation

Peripherals and the CPU can be Halted or disabled to
further reduce power consumption.

26.3.1

SLEEP MODE

Sleep mode has the lowest power consumption of the
device power-saving operating modes. The CPU and
most peripherals are Halted. Select peripherals can
continue to operate in Sleep mode and can be used to
wake the device from Sleep. See the individual
peripheral module sections for descriptions of
behavior in Sleep.
Sleep mode includes the following characteristics:
• The CPU is halted
• The system clock source is typically shutdown.
See Section 26.3.3 “Peripheral Bus Scaling
Method” for specific information.
• There can be a wake-up delay based on the
oscillator selection
• The Fail-Safe Clock Monitor (FSCM) does not
operate during Sleep mode
• The BOR circuit remains operative during Sleep
mode
• The WDT, if enabled, is not automatically cleared
prior to entering Sleep mode
• Some peripherals can continue to operate at
limited functionality in Sleep mode. These
peripherals include I/O pins that detect a change
in the input signal, WDT, ADC, UART and
peripherals that use an external clock input or the
internal LPRC oscillator (e.g., RTCC, Timer1 and
Input Capture).
• I/O pins continue to sink or source current in the
same manner as they do when the device is not in
Sleep
• The USB module can override the disabling of the
Posc or FRC. Refer to the USB section for
specific details.
• Modules can be individually disabled by software
prior to entering Sleep in order to further reduce
consumption

DS60001168K-page 235

PIC32MX1XX/2XX 28/36/44-PIN FAMILY
The processor will exit, or ‘wake-up’, from Sleep on one
of the following events:
• On any interrupt from an enabled source that is
operating in Sleep. The interrupt priority must be
greater than the current CPU priority.
• On any form of device Reset
• On a WDT time-out
If the interrupt priority is lower than or equal to the
current priority, the CPU will remain Halted, but the
PBCLK will start running and the device will enter into
Idle mode.

26.3.2

IDLE MODE

In Idle mode, the CPU is Halted but the System Clock
(SYSCLK) source is still enabled. This allows peripherals to continue operation when the CPU is Halted.
Peripherals can be individually configured to Halt when
entering Idle by setting their respective SIDL bit.
Latency, when exiting Idle mode, is very low due to the
CPU oscillator source remaining active.
Note 1: Changing the PBCLK divider ratio
requires recalculation of peripheral timing. For example, assume the UART is
configured for 9600 baud with a PB clock
ratio of 1:1 and a POSC of 8 MHz. When
the PB clock divisor of 1:2 is used, the
input frequency to the baud clock is cut in
half; therefore, the baud rate is reduced
to 1/2 its former value. Due to numeric
truncation in calculations (such as the
baud rate divisor), the actual baud rate
may be a tiny percentage different than
expected. For this reason, any timing calculation required for a peripheral should
be performed with the new PB clock frequency instead of scaling the previous
value based on a change in the PB divisor
ratio.
2: Oscillator start-up and PLL lock delays
are applied when switching to a clock
source that was disabled and that uses a
crystal and/or the PLL. For example,
assume the clock source is switched from
POSC to LPRC just prior to entering Sleep
in order to save power. No oscillator startup delay would be applied when exiting
Idle. However, when switching back to
POSC, the appropriate PLL and/or
oscillator start-up/lock delays would be
applied.

DS60001168K-page 236

The device enters Idle mode when the SLPEN
(OSCCON<4>) bit is clear and a WAIT instruction is
executed.
The processor will wake or exit from Idle mode on the
following events:
• On any interrupt event for which the interrupt
source is enabled. The priority of the interrupt
event must be greater than the current priority of
the CPU. If the priority of the interrupt event is
lower than or equal to current priority of the CPU,
the CPU will remain Halted and the device will
remain in Idle mode.
• On any form of device Reset
• On a WDT time-out interrupt

26.3.3

PERIPHERAL BUS SCALING
METHOD

Most of the peripherals on the device are clocked using
the PBCLK. The Peripheral Bus can be scaled relative to
the SYSCLK to minimize the dynamic power consumed
by the peripherals. The PBCLK divisor is controlled by
PBDIV<1:0> (OSCCON<20:19>), allowing SYSCLK to
PBCLK ratios of 1:1, 1:2, 1:4 and 1:8. All peripherals
using PBCLK are affected when the divisor is changed.
Peripherals such as the USB, Interrupt Controller, DMA,
and the bus matrix are clocked directly from SYSCLK.
As a result, they are not affected by PBCLK divisor
changes.
Changing the PBCLK divisor affects:
• The CPU to peripheral access latency. The CPU
has to wait for next PBCLK edge for a read to
complete. In 1:8 mode, this results in a latency of
one to seven SYSCLKs.
• The power consumption of the peripherals. Power
consumption is directly proportional to the frequency at which the peripherals are clocked. The
greater the divisor, the lower the power consumed
by the peripherals.
To minimize dynamic power, the PB divisor should be
chosen to run the peripherals at the lowest frequency
that provides acceptable system performance. When
selecting a PBCLK divider, peripheral clock requirements, such as baud rate accuracy, should be taken
into account. For example, the UART peripheral may
not be able to achieve all baud rate values at some
PBCLK divider depending on the SYSCLK value.

 2011-2018 Microchip Technology Inc.

PIC32MX1XX/2XX 28/36/44-PIN FAMILY
26.4

To disable a peripheral, the associated PMDx bit must
be set to ‘1’. To enable a peripheral, the associated
PMDx bit must be cleared (default). See Table 26-1 for
more information.

Peripheral Module Disable

The Peripheral Module Disable (PMD) registers
provide a method to disable a peripheral module by
stopping all clock sources supplied to that module.
When a peripheral is disabled using the appropriate
PMD control bit, the peripheral is in a minimum power
consumption state. The control and status registers
associated with the peripheral are also disabled, so
writes to those registers do not have effect and read
values are invalid.

TABLE 26-1:

Note:

Disabling a peripheral module while it’s
ON bit is set, may result in undefined
behavior. The ON bit for the associated
peripheral module must be cleared prior to
disable a module via the PMDx bits.

PERIPHERAL MODULE DISABLE BITS AND LOCATIONS

Peripheral(1)

PMDx bit Name(1)

Register Name and Bit Location

ADC1

AD1MD

PMD1<0>

CTMU

CTMUMD

PMD1<8>

Comparator Voltage Reference

CVRMD

PMD1<12>

Comparator 1

CMP1MD

PMD2<0>

Comparator 2

CMP2MD

PMD2<1>

Comparator 3

CMP3MD

PMD2<2>

Input Capture 1

IC1MD

PMD3<0>

Input Capture 2

IC2MD

PMD3<1>

Input Capture 3

IC3MD

PMD3<2>

Input Capture 4

IC4MD

PMD3<3>

Input Capture 5

IC5MD

PMD3<4>

Output Compare 1

OC1MD

PMD3<16>

Output Compare 2

OC2MD

PMD3<17>

Output Compare 3

OC3MD

PMD3<18>

Output Compare 4

OC4MD

PMD3<19>

Output Compare 5

OC5MD

PMD3<20>

Timer1

T1MD

PMD4<0>

Timer2

T2MD

PMD4<1>

Timer3

T3MD

PMD4<2>

Timer4

T4MD

PMD4<3>

Timer5

T5MD

PMD4<4>

UART1

U1MD

PMD5<0>

UART2

U2MD

PMD5<1>

SPI1

SPI1MD

PMD5<8>

SPI2

SPI2MD

PMD5<9>

I2C1

I2C1MD

PMD5<16>

I2C2

I2C2MD

PMD5<17>

USB(2)

USBMD

PMD5<24>

RTCC

RTCCMD

PMD6<0>

Reference Clock Output

REFOMD

PMD6<1>

PMPMD

PMD6<16>

PMP
Note 1:

2:

Not all modules and associated PMDx bits are available on all devices. See TABLE 1: “PIC32MX1XX
28/36/44-Pin General Purpose Family Features” and TABLE 2: “PIC32MX2XX 28/36/44-pin USB
Family Features” for the lists of available peripherals.
The module must not be busy after clearing the associated ON bit and prior to setting the USBMD bit.

 2011-2018 Microchip Technology Inc.

DS60001168K-page 237

PIC32MX1XX/2XX 28/36/44-PIN FAMILY
26.4.1

CONTROLLING CONFIGURATION
CHANGES

Because peripherals can be disabled during run time,
some restrictions on disabling peripherals are needed
to prevent accidental configuration changes. PIC32
devices include two features to prevent alterations to
enabled or disabled peripherals:
• Control register lock sequence
• Configuration bit select lock

26.4.1.1

Control Register Lock

Under normal operation, writes to the PMDx registers
are not allowed. Attempted writes appear to execute
normally, but the contents of the registers remain
unchanged. To change these registers, they must be
unlocked in hardware. The register lock is controlled by
the Configuration bit, PMDLOCK (CFGCON<12>).
Setting PMDLOCK prevents writes to the control
registers; clearing PMDLOCK allows writes.
To set or clear PMDLOCK, an unlock sequence must
be executed. Refer to Section 6. “Oscillator”
(DS60001112) in the “PIC32 Family Reference
Manual” for details.

26.4.1.2

Configuration Bit Select Lock

As an additional level of safety, the device can be
configured to prevent more than one write session to
the PMDx registers. The Configuration bit, PMDL1WAY
(DEVCFG3<28>), blocks the PMDLOCK bit from being
cleared after it has been set once. If PMDLOCK
remains set, the register unlock procedure does not
execute, and the peripheral pin select control registers
cannot be written to. The only way to clear the bit and
re-enable PMD functionality is to perform a device
Reset.

DS60001168K-page 238

 2011-2018 Microchip Technology Inc.

Virtual Address
(BF80_#)

Register
Name(1)

F240

PMD1

23/7

22/6

21/5

20/4

19/3

18/2

17/1

—

—

—

—

—

—

—

—

—

—

0000

—
—

CTMUMD
—

—
—

—
—

—
—

—
—

—
—

—
—

—
—

AD1MD
—

0000
0000

—
—

—
—

—
—

—
—

—
—

—
—

—
OC5MD

—
OC4MD

CMP3MD
OC3MD

—
—

—
—

—
—

—
—

—
—

—
—

—
—

IC5MD
—

IC4MD
—

IC3MD
—

IC2MD
—

IC1MD
—

0000
0000

—
—

—
—

—
—

—
—

—
USB1MD

—
—

—
—

—
—

T5MD
—

T4MD
—

T3MD
—

T2MD
I2C1MD

T1MD
I2C1MD

0000
0000

—
—

—
—

—
—

SPI2MD
—

SPI1MD
—

—
—

—
—

—
—

—
—

—
—

—
—

U2MD
—

U1MD
PMPMD

0000
0000

15:0
—
—
—
—
—
—
—
—
—
x = unknown value on Reset; — = unimplemented, read as ‘0’. Reset values are shown in hexadecimal.

—

—

—

—

—

REFOMD RTCCMD

0000

PMD3
PMD4

F270

PMD5

F280

PMD6

F290
Legend:

1:

31/15

30/14

29/13

31:16

—

—

15:0

—
—

—
—

—
—

31:16
15:0
31:16
15:0
31:16
15:0
31:16
15:0
31:16

28/12

27/11

26/10

25/9

—

—

—

—

—
—

CVRMD
—

—
—

—
—

—
—

—
—

—
—

—
—

—
—

—
—

—
—

—
—

—
—

—
—

—
—

—
—

—
—

—
—

16/0

All Resets

24/8

PMD2

F260

Bit Range

Bits

F250

Note

PERIPHERAL MODULE DISABLE REGISTER MAP

CMP2MD CMP1MD 0000
OC2MD
OC1MD 0000

All registers in this table have corresponding CLR, SET and INV registers at their virtual addresses, plus offsets of 0x4, 0x8 and 0xC, respectively. See Section 11.2 “CLR, SET and INV Registers” for
more information.

DS60001168K-page 239

PIC32MX1XX/2XX 28/36/44-PIN FAMILY

 2011-2018 Microchip Technology Inc.

TABLE 26-2:

PIC32MX1XX/2XX 28/36/44-PIN FAMILY
NOTES:

DS60001168K-page 240

 2011-2018 Microchip Technology Inc.

PIC32MX1XX/2XX 28/36/44-PIN FAMILY
27.0
Note:

SPECIAL FEATURES
This data sheet summarizes the features
of the PIC32MX1XX/2XX 28/36/44-pin
Family of devices. However, it is not
intended to be a comprehensive
reference source. To complement the
information in this data sheet, refer to
Section
32.
“Configuration”
(DS60001124)
and
Section
33.
“Programming
and
Diagnostics”
(DS60001129), which are available from
the Documentation > Reference Manual
section of the Microchip PIC32 web site
(www.microchip.com/pic32).

27.1

Configuration Bits

The Configuration bits can be programmed using the
following registers to select various device
configurations.
•
•
•
•
•

DEVCFG0: Device Configuration Word 0
DEVCFG1: Device Configuration Word 1
DEVCFG2: Device Configuration Word 2
DEVCFG3: Device Configuration Word 3
CFGCON: Configuration Control Register

In addition, the DEVID register (Register 27-6)
provides device and revision information.

PIC32MX1XX/2XX 28/36/44-pin Family devices
include the following features intended to maximize
application flexibility, reliability and minimize cost
through elimination of external components.
• Flexible device configuration
• Joint Test Action Group (JTAG) interface
• In-Circuit Serial Programming™ (ICSP™)

 2011-2018 Microchip Technology Inc.

DS60001168K-page 241

Configuration Registers
DEVCFG: DEVICE CONFIGURATION WORD SUMMARY

0BF4 DEVCFG2
0BF8 DEVCFG1
0BFC DEVCFG0
Legend:
Note 1:
2:

30/14

29/13

28/12

31:16 FVBUSONIO FUSBIDIO IOL1WAY PMDL1WAY
15:0
31:16
15:0
31:16

27/11

26/10

25/9

—

—

—

24/8

23/7

22/6

21/5

20/4

19/3

18/2

17/1

16/0

—

—

—

—

—

—

—

—

—

USERID<15:0>
—

—

—

—

—

—

UPLLEN(1)
—

—
—

—
—

—
—

—
—

UPLLIDIV<2:0>(1)
—
FPLLMUL<2:0>
—
FWDTWINSZ<1:0> FWDTEN WINDIS
—

—
—

15:0

FCKSM<1:0>

FPBDIV<1:0>

31:16

—

—

—

CP

OSCIOFNC
—

—

—

—

POSCMOD<1:0>
—
BWP

15:0
PWP<5:0>
—
—
x = unknown value on Reset; — = unimplemented, read as ‘0’. Reset values are shown in hexadecimal.
This bit is only available on PIC32MX2XX devices.
PWP<8:7> are only available on devices with 256 KB of Flash.

Virtual Address
(BF80_#)

Register
Name

TABLE 27-2:

F220

DEVID

—

—

IESO
—

—
—

FSOSCEN
—

—

—

—

23/7

22/6

21/5

—

—
—

—

FPLLODIV<2:0>

xxxx

—

FPLLIDIV<2:0>
WDTPS<4:0>

xxxx
xxxx

—
—

ICESEL<1:0>

FNOSC<2:0>
PWP<8:6>(2)
JTAGEN

xxxx
xxxx

DEBUG<1:0>

 2011-2018 Microchip Technology Inc.

F230 SYSKEY(3)
Legend:
Note 1:

xxxx

DEVICE ID, REVISION, AND CONFIGURATION SUMMARY
Bit Range

Bits

F200 CFGCON

xxxx
xxxx

31/15

31:16

30/14

29/13

28/12

27/11

26/10

25/9

VER<3:0>

20/4

19/3

18/2

17/1

16/0

xxxx(1)

DEVID<27:16>

15:0

DEVID<15:0>

31:16

—

—

15:0

—

—

31:16

24/8

—

—

IOLOCK PMDLOCK

xxxx(1)

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

JTAGEN

—

—

SYSKEY<31:0>
15:0
x = unknown value on Reset; — = unimplemented, read as ‘0’. Reset values are shown in hexadecimal.
Reset values are dependent on the device variant.

All Resets(1)

0BF0 DEVCFG3

31/15

All Resets

Bit Range

Bits
Register
Name

Virtual Address
(BFC0_#)

TABLE 27-1:

—

0000

TDOEN 000B
0000
0000

PIC32MX1XX/2XX 28/36/44-PIN FAMILY

DS60001168K-page 242

27.2

PIC32MX1XX/2XX 28/36/44-PIN FAMILY
REGISTER 27-1:
Bit
Range
31:24
23:16
15:8
7:0

DEVCFG0: DEVICE CONFIGURATION WORD 0

Bit
31/23/15/7

Bit
30/22/14/6

Bit
29/21/13/5

Bit
28/20/12/4

Bit
27/19/11/3

Bit
26/18/10/2

Bit
25/17/9/1

Bit
24/16/8/0

r-0

r-1

r-1

R/P

r-1

r-1

r-1

R/P

—

—

—

CP

—

—

—

BWP

R/P

R/P

R/P

r-1

r-1

r-1

r-1

r-1

—

—

—

—

—

R/P

R/P

R/P

R/P

R/P

PWP<8:6>(3)
R/P

PWP<5:0>
r-1

r-1

r-1

R/P

—

—

—

ICESEL<1:0>(2)

Legend:
R = Readable bit
-n = Value at POR

r = Reserved bit
W = Writable bit
‘1’ = Bit is set

R/P

R/P

JTAGEN(1)

r-1

r-1

—

—

R/P

R/P

DEBUG<1:0>

P = Programmable bit
U = Unimplemented bit, read as ‘0’
‘0’ = Bit is cleared
x = Bit is unknown

bit 31
Reserved: Write ‘0’
bit 30-29 Reserved: Write ‘1’
bit 28
CP: Code-Protect bit
Prevents boot and program Flash memory from being read or modified by an external programming device.
1 = Protection is disabled
0 = Protection is enabled
bit 27-25 Reserved: Write ‘1’
bit 24
BWP: Boot Flash Write-Protect bit
Prevents boot Flash memory from being modified during code execution.
1 = Boot Flash is writable
0 = Boot Flash is not writable
bit 23-19 Reserved: Write ‘1’
Note 1:
2:
3:

This bit sets the value for the JTAGEN bit in the CFGCON register.
The PGEC4/PGED4 pin pair is not available on all devices. Refer to the “Pin Diagrams” section for
availability.
The PWP<8:7> bits are only available on devices with 256 KB Flash.

 2011-2018 Microchip Technology Inc.

DS60001168K-page 243

PIC32MX1XX/2XX 28/36/44-PIN FAMILY
REGISTER 27-1:

DEVCFG0: DEVICE CONFIGURATION WORD 0 (CONTINUED)

bit 18-10 PWP<8:0>: Program Flash Write-Protect bits(3)
Prevents selected program Flash memory pages from being modified during code execution.
111111111 = Disabled
111111110 = Memory below 0x0400 address is write-protected
111111101 = Memory below 0x0800 address is write-protected
111111100 = Memory below 0x0C00 address is write-protected
111111011 = Memory below 0x1000 (4K) address is write-protected
111111010 = Memory below 0x1400 address is write-protected
111111001 = Memory below 0x1800 address is write-protected
111111000 = Memory below 0x1C00 address is write-protected
111110111 = Memory below 0x2000 (8K) address is write-protected
111110110 = Memory below 0x2400 address is write-protected
111110101 = Memory below 0x2800 address is write-protected
111110100 = Memory below 0x2C00 address is write-protected
111110011 = Memory below 0x3000 address is write-protected
111110010 = Memory below 0x3400 address is write-protected
111110001 = Memory below 0x3800 address is write-protected
111110000 = Memory below 0x3C00 address is write-protected
111101111 = Memory below 0x4000 (16K) address is write-protected
•
•
•

110111111 = Memory below 0x10000 (64K) address is write-protected
•
•
•

101111111 = Memory below 0x20000 (128K) address is write-protected
•
•
•

011111111 = Memory below 0x40000 (256K) address is write-protected
•
•
•

000000000 = All possible memory is write-protected
bit 9-5
bit 4-3

Reserved: Write ‘1’
ICESEL<1:0>: In-Circuit Emulator/Debugger Communication Channel Select bits(2)
11 = PGEC1/PGED1 pair is used
10 = PGEC2/PGED2 pair is used
01 = PGEC3/PGED3 pair is used
00 = PGEC4/PGED4 pair is used(2)
JTAGEN: JTAG Enable bit(1)
1 = JTAG is enabled
0 = JTAG is disabled
DEBUG<1:0>: Background Debugger Enable bits (forced to ‘11’ if code-protect is enabled)
11 = Debugger is disabled
0x = Debugger is enabled

bit 2

bit 1-0

Note 1:
2:
3:

This bit sets the value for the JTAGEN bit in the CFGCON register.
The PGEC4/PGED4 pin pair is not available on all devices. Refer to the “Pin Diagrams” section for
availability.
The PWP<8:7> bits are only available on devices with 256 KB Flash.

DS60001168K-page 244

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PIC32MX1XX/2XX 28/36/44-PIN FAMILY
REGISTER 27-2:
Bit
Range
31:24
23:16
15:8
7:0

DEVCFG1: DEVICE CONFIGURATION WORD 1

Bit
31/23/15/7

Bit
30/22/14/6

Bit
29/21/13/5

Bit
28/20/12/4

Bit
27/19/11/3

Bit
26/18/10/2

r-1

r-1

r-1

r-1

r-1

r-1

—

—

—

—

—

—

R/P

R/P

R/P

R/P

r-1

FWDTEN

WINDIS

—

R/P

R/P

R/P

FCKSM<1:0>

Bit
25/17/9/1

Bit
24/16/8/0

R/P

R/P

FWDTWINSZ<1:0>

R/P

R/P

R/P

R/P

R/P

WDTPS<4:0>
R/P

FPBDIV<1:0>

r-1

R/P

—

OSCIOFNC
R/P

R/P

r-1

R/P

r-1

r-1

IESO

—

FSOSCEN

—

—

POSCMOD<1:0>
R/P

R/P

FNOSC<2:0>

Legend:

r = Reserved bit

P = Programmable bit

R = Readable bit

W = Writable bit

U = Unimplemented bit, read as ‘0’

-n = Value at POR

‘1’ = Bit is set

‘0’ = Bit is cleared

x = Bit is unknown

bit 31-26 Reserved: Write ‘1’
bit 25-24 FWDTWINSZ<1:0>: Watchdog Timer Window Size bits
11 = Window size is 25%
10 = Window size is 37.5%
01 = Window size is 50%
00 = Window size is 75%
bit 23

FWDTEN: Watchdog Timer Enable bit
1 = Watchdog Timer is enabled and cannot be disabled by software
0 = Watchdog Timer is not enabled; it can be enabled in software

bit 22

WINDIS: Watchdog Timer Window Enable bit
1 = Watchdog Timer is in non-Window mode
0 = Watchdog Timer is in Window mode

bit 21

Reserved: Write ‘1’

bit 20-16 WDTPS<4:0>: Watchdog Timer Postscale Select bits
10100 = 1:1048576
10011 = 1:524288
10010 = 1:262144
10001 = 1:131072
10000 = 1:65536
01111 = 1:32768
01110 = 1:16384
01101 = 1:8192
01100 = 1:4096
01011 = 1:2048
01010 = 1:1024
01001 = 1:512
01000 = 1:256
00111 = 1:128
00110 = 1:64
00101 = 1:32
00100 = 1:16
00011 = 1:8
00010 = 1:4
00001 = 1:2
00000 = 1:1
All other combinations not shown result in operation = 10100
Note 1:

Do not disable the POSC (POSCMOD = 11) when using this oscillator source.

 2011-2018 Microchip Technology Inc.

DS60001168K-page 245

PIC32MX1XX/2XX 28/36/44-PIN FAMILY
REGISTER 27-2:

DEVCFG1: DEVICE CONFIGURATION WORD 1 (CONTINUED)

bit 15-14 FCKSM<1:0>: Clock Switching and Monitor Selection Configuration bits
1x = Clock switching is disabled, Fail-Safe Clock Monitor is disabled
01 = Clock switching is enabled, Fail-Safe Clock Monitor is disabled
00 = Clock switching is enabled, Fail-Safe Clock Monitor is enabled
bit 13-12 FPBDIV<1:0>: Peripheral Bus Clock Divisor Default Value bits
11 = PBCLK is SYSCLK divided by 8
10 = PBCLK is SYSCLK divided by 4
01 = PBCLK is SYSCLK divided by 2
00 = PBCLK is SYSCLK divided by 1
bit 11

Reserved: Write ‘1’

bit 10

OSCIOFNC: CLKO Enable Configuration bit
1 = CLKO output disabled
0 = CLKO output signal active on the OSCO pin; Primary Oscillator must be disabled or configured for the
External Clock mode (EC) for the CLKO to be active (POSCMOD<1:0> = 11 or 00)

bit 9-8

POSCMOD<1:0>: Primary Oscillator Configuration bits
11 = Primary Oscillator is disabled
10 = HS Oscillator mode is selected
01 = XT Oscillator mode is selected
00 = External Clock mode is selected

bit 7

IESO: Internal External Switchover bit
1 = Internal External Switchover mode is enabled (Two-Speed Start-up is enabled)
0 = Internal External Switchover mode is disabled (Two-Speed Start-up is disabled)

bit 6

Reserved: Write ‘1’

bit 5

FSOSCEN: Secondary Oscillator Enable bit
1 = Enable Secondary Oscillator
0 = Disable Secondary Oscillator

bit 4-3

Reserved: Write ‘1’

bit 2-0

FNOSC<2:0>: Oscillator Selection bits
111 = Fast RC Oscillator with divide-by-N (FRCDIV)
110 = FRCDIV16 Fast RC Oscillator with fixed divide-by-16 postscaler
101 = Low-Power RC Oscillator (LPRC)
100 = Secondary Oscillator (SOSC)
011 = Primary Oscillator (POSC) with PLL module (XT+PLL, HS+PLL, EC+PLL)
010 = Primary Oscillator (XT, HS, EC)(1)
001 = Fast RC Oscillator with divide-by-N with PLL module (FRCDIV+PLL)
000 = Fast RC Oscillator (FRC)

Note 1:

Do not disable the POSC (POSCMOD = 11) when using this oscillator source.

DS60001168K-page 246

 2011-2018 Microchip Technology Inc.

PIC32MX1XX/2XX 28/36/44-PIN FAMILY
REGISTER 27-3:
Bit
Range
31:24
23:16
15:8
7:0

Bit
31/23/15/7

DEVCFG2: DEVICE CONFIGURATION WORD 2
Bit
30/22/14/6

Bit
29/21/13/5

Bit
Bit
28/20/12/4 27/19/11/3

Bit
26/18/10/2

Bit
25/17/9/1

Bit
24/16/8/0

r-1

r-1

r-1

r-1

r-1

r-1

r-1

r-1

—

—

—

—

—

—

—

—

R/P

R/P

R/P

r-1

r-1

r-1

r-1

r-1

—

—

—

—

—

R/P

r-1

r-1

r-1

r-1

UPLLEN(1)

—

—

—

—

r-1

R/P-1

R/P

R/P-1

—

FPLLMUL<2:0>

r-1

FPLLODIV<2:0>
R/P

R/P

R/P

UPLLIDIV<2:0>(1)
R/P

—

R/P

R/P

FPLLIDIV<2:0>

Legend:

r = Reserved bit

P = Programmable bit

R = Readable bit

W = Writable bit

U = Unimplemented bit, read as ‘0’

-n = Value at POR

‘1’ = Bit is set

‘0’ = Bit is cleared

x = Bit is unknown

bit 31-19 Reserved: Write ‘1’
bit 18-16 FPLLODIV<2:0>: Default PLL Output Divisor bits
111 = PLL output divided by 256
110 = PLL output divided by 64
101 = PLL output divided by 32
100 = PLL output divided by 16
011 = PLL output divided by 8
010 = PLL output divided by 4
001 = PLL output divided by 2
000 = PLL output divided by 1
bit 15

UPLLEN: USB PLL Enable bit(1)
1 = Disable and bypass USB PLL
0 = Enable USB PLL

bit 14-11 Reserved: Write ‘1’
bit 10-8

UPLLIDIV<2:0>: USB PLL Input Divider bits(1)
111 = 12x divider
110 = 10x divider
101 = 6x divider
100 = 5x divider
011 = 4x divider
010 = 3x divider
010 = 3x divider
001 = 2x divider
000 = 1x divider

bit 7

Reserved: Write ‘1’

bit 6-4

FPLLMUL<2:0>: PLL Multiplier bits
111 = 24x multiplier
110 = 21x multiplier
101 = 20x multiplier
100 = 19x multiplier
011 = 18x multiplier
010 = 17x multiplier
001 = 16x multiplier
000 = 15x multiplier

bit 3

Reserved: Write ‘1’

Note 1:

This bit is only available on PIC32MX2XX devices.

 2011-2018 Microchip Technology Inc.

DS60001168K-page 247

PIC32MX1XX/2XX 28/36/44-PIN FAMILY
REGISTER 27-3:

DEVCFG2: DEVICE CONFIGURATION WORD 2 (CONTINUED)

bit 2-0

FPLLIDIV<2:0>: PLL Input Divider bits
111 = 12x divider
110 = 10x divider
101 = 6x divider
100 = 5x divider
011 = 4x divider
010 = 3x divider
001 = 2x divider
000 = 1x divider

Note 1:

This bit is only available on PIC32MX2XX devices.

DS60001168K-page 248

 2011-2018 Microchip Technology Inc.

PIC32MX1XX/2XX 28/36/44-PIN FAMILY
REGISTER 27-4:
Bit
Range
31:24
23:16
15:8
7:0

DEVCFG3: DEVICE CONFIGURATION WORD 3

Bit
31/23/15/7

Bit
30/22/14/6

Bit
29/21/13/5

Bit
28/20/12/4

Bit
Bit
27/19/11/3 26/18/10/2

Bit
25/17/9/1

Bit
24/16/8/0

R/P

R/P

R/P

R/P

r-1

r-1

r-1

r-1

FVBUSONIO

FUSBIDIO

IOL1WAY

PMDL1WAY

—

—

—

—

r-1

r-1

r-1

r-1

r-1

r-1

r-1

r-1

—

—

—

—

—

—

—

—

R/P

R/P

R/P

R/P

R/P

R/P

R/P

R/P

R/P

R/P

R/P

USERID<15:8>
R/P

R/P

Legend:
R = Readable bit
-n = Value at POR

R/P

R/P

R/P

USERID<7:0>
r = Reserved bit
W = Writable bit
‘1’ = Bit is set

P = Programmable bit
U = Unimplemented bit, read as ‘0’
‘0’ = Bit is cleared
x = Bit is unknown

bit 31

FVBUSONIO: USB VBUSON Selection bit
1 = VBUSON pin is controlled by the USB module
0 = VBUSON pin is controlled by the port function
bit 30
FUSBIDIO: USB USBID Selection bit
1 = USBID pin is controlled by the USB module
0 = USBID pin is controlled by the port function
bit 29
IOL1WAY: Peripheral Pin Select Configuration bit
1 = Allow only one reconfiguration
0 = Allow multiple reconfigurations
bit 28
PMDl1WAY: Peripheral Module Disable Configuration bit
1 = Allow only one reconfiguration
0 = Allow multiple reconfigurations
bit 27-16 Reserved: Write ‘1’
bit 15-0 USERID<15:0>: User ID bits
This is a 16-bit value that is user-defined and is readable via ICSP™ and JTAG.

 2011-2018 Microchip Technology Inc.

DS60001168K-page 249

PIC32MX1XX/2XX 28/36/44-PIN FAMILY
REGISTER 27-5:
Bit
Range
31:24
23:16
15:8
7:0

CFGCON: CONFIGURATION CONTROL REGISTER

Bit
31/23/15/7

Bit
30/22/14/6

Bit
29/21/13/5

Bit
28/20/12/4

Bit
27/19/11/3

Bit
26/18/10/2

Bit
25/17/9/1

Bit
24/16/8/0

U-0

U-0

U-0

U-0

U-0

U-0

U-0

U-0

—

—

—

—

—

—

—

—

U-0

U-0

U-0

U-0

U-0

U-0

U-0

U-0

—

—

—

—

—

—

—

—

U-0

U-0

R/W-0

R/W-0

U-0

U-0

U-0

U-0

—

—

—

—

—

—

U-0

U-0

U-0

U-0

R/W-1

U-0

U-1

R/W-1

—

—

—

—

JTAGEN

—

—

TDOEN

IOLOCK(1) PMDLOCK(1)

Legend:
R = Readable bit

W = Writable bit

U = Unimplemented bit, read as ‘0’

-n = Value at POR

‘1’ = Bit is set

‘0’ = Bit is cleared

x = Bit is unknown

bit 31-14 Unimplemented: Read as ‘0’
bit 13

IOLOCK: Peripheral Pin Select Lock bit(1)
1 = Peripheral Pin Select is locked. Writes to PPS registers is not allowed.
0 = Peripheral Pin Select is not locked. Writes to PPS registers is allowed.

bit 12

PMDLOCK: Peripheral Module Disable bit(1)
1 = Peripheral module is locked. Writes to PMD registers is not allowed.
0 = Peripheral module is not locked. Writes to PMD registers is allowed.

bit 11-4

Unimplemented: Read as ‘0’

bit 3

JTAGEN: JTAG Port Enable bit
1 = Enable the JTAG port
0 = Disable the JTAG port

bit 2-1

Unimplemented: Read as ‘1’

bit 0

TDOEN: TDO Enable for 2-Wire JTAG bit
1 = 2-wire JTAG protocol uses TDO
0 = 2-wire JTAG protocol does not use TDO

Note 1:

To change this bit, the unlock sequence must be performed. Refer to Section 6. “Oscillator”
(DS60001112) in the “PIC32 Family Reference Manual” for details.

DS60001168K-page 250

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PIC32MX1XX/2XX 28/36/44-PIN FAMILY
REGISTER 27-6:
Bit
Range
31:24
23:16
15:8
7:0

DEVID: DEVICE AND REVISION ID REGISTER

Bit
31/23/15/7

Bit
30/22/14/6

Bit
29/21/13/5

Bit
28/20/12/4

Bit
27/19/11/3

R

R

R

R

R

VER<3:0>(1)
R

R

R

Bit
26/18/10/2

Bit
25/17/9/1

Bit
24/16/8/0

R

R

R

DEVID<27:24>(1)
R

R

R

R

R

R

R

R

R

R

R

DEVID<23:16>(1)
R

R

R

R

R

DEVID<15:8>(1)
R

R

R

R

R

DEVID<7:0>(1)

Legend:
R = Readable bit

W = Writable bit

U = Unimplemented bit, read as ‘0’

-n = Value at POR

‘1’ = Bit is set

‘0’ = Bit is cleared

x = Bit is unknown

bit 31-28 VER<3:0>: Revision Identifier bits(1)
bit 27-0

DEVID<27:0>: Device ID bits(1)

Note 1:

See the “PIC32 Flash Programming Specification” (DS60001145) for a list of Revision and Device ID
values.

 2011-2018 Microchip Technology Inc.

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PIC32MX1XX/2XX 28/36/44-PIN FAMILY
27.3

On-Chip Voltage Regulator

All PIC32MX1XX/2XX 28/36/44-pin Family devices’
core and digital logic are designed to operate at a nominal 1.8V. To simplify system designs, most devices in
the PIC32MX1XX/2XX 28/36/44-pin Family family
incorporate an on-chip regulator providing the required
core logic voltage from VDD.
A low-ESR capacitor (such as tantalum) must be
connected to the VCAP pin (see Figure 27-1). This
helps to maintain the stability of the regulator. The
recommended value for the filter capacitor is provided
in Section 30.1 “DC Characteristics”.
It is important that the low-ESR capacitor
is placed as close as possible to the VCAP
pin.

Note:

27.3.1

ON-CHIP REGULATOR AND POR

It takes a fixed delay for the on-chip regulator to generate an output. During this time, designated as TPU,
code execution is disabled. TPU is applied every time
the device resumes operation after any power-down,
including Sleep mode.

27.3.2

27.4

Programming and Diagnostics

PIC32MX1XX/2XX 28/36/44-pin Family devices provide a complete range of programming and diagnostic
features that can increase the flexibility of any application using them. These features allow system designers to include:
• Simplified field programmability using two-wire
In-Circuit Serial Programming™ (ICSP™)
interfaces
• Debugging using ICSP
• Programming and debugging capabilities using
the EJTAG extension of JTAG
• JTAG boundary scan testing for device and board
diagnostics
PIC32 devices incorporate two programming and diagnostic modules, and a trace controller, that provide a
range of functions to the application developer.
Figure 27-2 illustrates a block diagram of
programming, debugging, and trace ports.

FIGURE 27-2:

BLOCK DIAGRAM OF
PROGRAMMING,
DEBUGGING AND TRACE
PORTS

ON-CHIP REGULATOR AND BOR

PIC32MX1XX/2XX 28/36/44-pin Family devices also
have a simple brown-out capability. If the voltage
supplied to the regulator is inadequate to maintain a
regulated level, the regulator Reset circuitry will
generate a Brown-out Reset. This event is captured by
the BOR flag bit (RCON<1>). The brown-out voltage
levels
are
specific
in
Section 30.1
“DC
Characteristics”.

FIGURE 27-1:

the

PGEC1
PGED1
ICSP™
Controller
PGEC4
PGED4
Core

CONNECTIONS FOR THE
ON-CHIP REGULATOR

ICESEL
TDI

3.3V(1)

TDO
PIC32
VDD

TCK

JTAG
Controller

TMS
VCAP
CEFC(2,3)
(10 F typ)

Note 1:

2:
3:

JTAGEN

DEBUG<1:0>

VSS

These are typical operating voltages. Refer to
Section 30.1 “DC Characteristics” for the full
operating ranges of VDD.
It is important that the low-ESR capacitor is
placed as close as possible to the VCAP pin.
The typical voltage on the VCAP pin is 1.8V.

DS60001168K-page 252

 2011-2018 Microchip Technology Inc.

PIC32MX1XX/2XX 28/36/44-PIN FAMILY
28.0

INSTRUCTION SET

The PIC32MX1XX/2XX family instruction set
complies with the MIPS32® Release 2 instruction set
architecture. The PIC32 device family does not
support the following features:
• Core extend instructions
• Coprocessor 1 instructions
• Coprocessor 2 instructions
Note:

Refer to “MIPS32® Architecture for
Programmers Volume II: The MIPS32®
Instruction Set” at www.imgtec.com for
more information.

 2011-2018 Microchip Technology Inc.

DS60001168K-page 253

PIC32MX1XX/2XX 28/36/44-PIN FAMILY
NOTES:

DS60001168K-page 254

 2011-2018 Microchip Technology Inc.

PIC32MX1XX/2XX 28/36/44-PIN FAMILY
29.0

DEVELOPMENT SUPPORT
®

29.1

®

The PIC microcontrollers (MCU) and dsPIC digital
signal controllers (DSC) are supported with a full range
of software and hardware development tools:
• Integrated Development Environment
- MPLAB® X IDE Software
• Compilers/Assemblers/Linkers
- MPLAB XC Compiler
- MPASMTM Assembler
- MPLINKTM Object Linker/
MPLIBTM Object Librarian
- MPLAB Assembler/Linker/Librarian for
Various Device Families
• Simulators
- MPLAB X SIM Software Simulator
• Emulators
- MPLAB REAL ICE™ In-Circuit Emulator
• In-Circuit Debuggers/Programmers
- MPLAB ICD 3
- PICkit™ 3
• Device Programmers
- MPLAB PM3 Device Programmer
• Low-Cost Demonstration/Development Boards,
Evaluation Kits and Starter Kits
• Third-party development tools

MPLAB X Integrated Development
Environment Software

The MPLAB X IDE is a single, unified graphical user
interface for Microchip and third-party software, and
hardware development tool that runs on Windows®,
Linux and Mac OS® X. Based on the NetBeans IDE,
MPLAB X IDE is an entirely new IDE with a host of free
software components and plug-ins for highperformance application development and debugging.
Moving between tools and upgrading from software
simulators to hardware debugging and programming
tools is simple with the seamless user interface.
With complete project management, visual call graphs,
a configurable watch window and a feature-rich editor
that includes code completion and context menus,
MPLAB X IDE is flexible and friendly enough for new
users. With the ability to support multiple tools on
multiple projects with simultaneous debugging, MPLAB
X IDE is also suitable for the needs of experienced
users.
Feature-Rich Editor:
• Color syntax highlighting
• Smart code completion makes suggestions and
provides hints as you type
• Automatic code formatting based on user-defined
rules
• Live parsing
User-Friendly, Customizable Interface:
• Fully customizable interface: toolbars, toolbar
buttons, windows, window placement, etc.
• Call graph window
Project-Based Workspaces:
•
•
•
•

Multiple projects
Multiple tools
Multiple configurations
Simultaneous debugging sessions

File History and Bug Tracking:
• Local file history feature
• Built-in support for Bugzilla issue tracker

 2011-2018 Microchip Technology Inc.

DS60001168K-page 255

PIC32MX1XX/2XX 28/36/44-PIN FAMILY
29.2

MPLAB XC Compilers

The MPLAB XC Compilers are complete ANSI C
compilers for all of Microchip’s 8, 16, and 32-bit MCU
and DSC devices. These compilers provide powerful
integration capabilities, superior code optimization and
ease of use. MPLAB XC Compilers run on Windows,
Linux or MAC OS X.
For easy source level debugging, the compilers provide
debug information that is optimized to the MPLAB X
IDE.
The free MPLAB XC Compiler editions support all
devices and commands, with no time or memory
restrictions, and offer sufficient code optimization for
most applications.
MPLAB XC Compilers include an assembler, linker and
utilities. The assembler generates relocatable object
files that can then be archived or linked with other relocatable object files and archives to create an executable file. MPLAB XC Compiler uses the assembler to
produce its object file. Notable features of the assembler include:
•
•
•
•
•
•

Support for the entire device instruction set
Support for fixed-point and floating-point data
Command-line interface
Rich directive set
Flexible macro language
MPLAB X IDE compatibility

29.3

MPASM Assembler

The MPASM Assembler is a full-featured, universal
macro assembler for PIC10/12/16/18 MCUs.
The MPASM Assembler generates relocatable object
files for the MPLINK Object Linker, Intel® standard HEX
files, MAP files to detail memory usage and symbol
reference, absolute LST files that contain source lines
and generated machine code, and COFF files for
debugging.
The MPASM Assembler features include:

29.4

MPLINK Object Linker/
MPLIB Object Librarian

The MPLINK Object Linker combines relocatable
objects created by the MPASM Assembler. It can link
relocatable objects from precompiled libraries, using
directives from a linker script.
The MPLIB Object Librarian manages the creation and
modification of library files of precompiled code. When
a routine from a library is called from a source file, only
the modules that contain that routine will be linked in
with the application. This allows large libraries to be
used efficiently in many different applications.
The object linker/library features include:
• Efficient linking of single libraries instead of many
smaller files
• Enhanced code maintainability by grouping
related modules together
• Flexible creation of libraries with easy module
listing, replacement, deletion and extraction

29.5

MPLAB Assembler, Linker and
Librarian for Various Device
Families

MPLAB Assembler produces relocatable machine
code from symbolic assembly language for PIC24,
PIC32 and dsPIC DSC devices. MPLAB XC Compiler
uses the assembler to produce its object file. The
assembler generates relocatable object files that can
then be archived or linked with other relocatable object
files and archives to create an executable file. Notable
features of the assembler include:
•
•
•
•
•
•

Support for the entire device instruction set
Support for fixed-point and floating-point data
Command-line interface
Rich directive set
Flexible macro language
MPLAB X IDE compatibility

• Integration into MPLAB X IDE projects
• User-defined macros to streamline
assembly code
• Conditional assembly for multipurpose
source files
• Directives that allow complete control over the
assembly process

DS60001168K-page 256

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PIC32MX1XX/2XX 28/36/44-PIN FAMILY
29.6

MPLAB X SIM Software Simulator

The MPLAB X SIM Software Simulator allows code
development in a PC-hosted environment by simulating the PIC MCUs and dsPIC DSCs on an instruction
level. On any given instruction, the data areas can be
examined or modified and stimuli can be applied from
a comprehensive stimulus controller. Registers can be
logged to files for further run-time analysis. The trace
buffer and logic analyzer display extend the power of
the simulator to record and track program execution,
actions on I/O, most peripherals and internal registers.
The MPLAB X SIM Software Simulator fully supports
symbolic debugging using the MPLAB XC Compilers,
and the MPASM and MPLAB Assemblers. The software simulator offers the flexibility to develop and
debug code outside of the hardware laboratory environment, making it an excellent, economical software
development tool.

29.7

MPLAB REAL ICE In-Circuit
Emulator System

The MPLAB REAL ICE In-Circuit Emulator System is
Microchip’s next generation high-speed emulator for
Microchip Flash DSC and MCU devices. It debugs and
programs all 8, 16 and 32-bit MCU, and DSC devices
with the easy-to-use, powerful graphical user interface of
the MPLAB X IDE.
The emulator is connected to the design engineer’s
PC using a high-speed USB 2.0 interface and is
connected to the target with either a connector
compatible with in-circuit debugger systems (RJ-11)
or with the new high-speed, noise tolerant, LowVoltage Differential Signal (LVDS) interconnection
(CAT5).
The emulator is field upgradable through future firmware
downloads in MPLAB X IDE. MPLAB REAL ICE offers
significant advantages over competitive emulators
including full-speed emulation, run-time variable
watches, trace analysis, complex breakpoints, logic
probes, a ruggedized probe interface and long (up to
three meters) interconnection cables.

 2011-2018 Microchip Technology Inc.

29.8

MPLAB ICD 3 In-Circuit Debugger
System

The MPLAB ICD 3 In-Circuit Debugger System is
Microchip’s most cost-effective, high-speed hardware
debugger/programmer for Microchip Flash DSC and
MCU devices. It debugs and programs PIC Flash
microcontrollers and dsPIC DSCs with the powerful,
yet easy-to-use graphical user interface of the MPLAB
IDE.
The MPLAB ICD 3 In-Circuit Debugger probe is
connected to the design engineer’s PC using a highspeed USB 2.0 interface and is connected to the target
with a connector compatible with the MPLAB ICD 2 or
MPLAB REAL ICE systems (RJ-11). MPLAB ICD 3
supports all MPLAB ICD 2 headers.

29.9

PICkit 3 In-Circuit Debugger/
Programmer

The MPLAB PICkit 3 allows debugging and programming of PIC and dsPIC Flash microcontrollers at a most
affordable price point using the powerful graphical user
interface of the MPLAB IDE. The MPLAB PICkit 3 is
connected to the design engineer’s PC using a fullspeed USB interface and can be connected to the target via a Microchip debug (RJ-11) connector (compatible with MPLAB ICD 3 and MPLAB REAL ICE). The
connector uses two device I/O pins and the Reset line
to implement in-circuit debugging and In-Circuit Serial
Programming™ (ICSP™).

29.10 MPLAB PM3 Device Programmer
The MPLAB PM3 Device Programmer is a universal,
CE compliant device programmer with programmable
voltage verification at VDDMIN and VDDMAX for
maximum reliability. It features a large LCD display
(128 x 64) for menus and error messages, and a modular, detachable socket assembly to support various
package types. The ICSP cable assembly is included
as a standard item. In Stand-Alone mode, the MPLAB
PM3 Device Programmer can read, verify and program
PIC devices without a PC connection. It can also set
code protection in this mode. The MPLAB PM3
connects to the host PC via an RS-232 or USB cable.
The MPLAB PM3 has high-speed communications and
optimized algorithms for quick programming of large
memory devices, and incorporates an MMC card for file
storage and data applications.

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29.11 Demonstration/Development
Boards, Evaluation Kits, and
Starter Kits
A wide variety of demonstration, development and
evaluation boards for various PIC MCUs and dsPIC
DSCs allows quick application development on fully
functional systems. Most boards include prototyping
areas for adding custom circuitry and provide application firmware and source code for examination and
modification.
The boards support a variety of features, including LEDs,
temperature sensors, switches, speakers, RS-232
interfaces, LCD displays, potentiometers and additional
EEPROM memory.

29.12 Third-Party Development Tools
Microchip also offers a great collection of tools from
third-party vendors. These tools are carefully selected
to offer good value and unique functionality.
• Device Programmers and Gang Programmers
from companies, such as SoftLog and CCS
• Software Tools from companies, such as Gimpel
and Trace Systems
• Protocol Analyzers from companies, such as
Saleae and Total Phase
• Demonstration Boards from companies, such as
MikroElektronika, Digilent® and Olimex
• Embedded Ethernet Solutions from companies,
such as EZ Web Lynx, WIZnet and IPLogika®

The demonstration and development boards can be
used in teaching environments, for prototyping custom
circuits and for learning about various microcontroller
applications.
In addition to the PICDEM™ and dsPICDEM™
demonstration/development board series of circuits,
Microchip has a line of evaluation kits and demonstration software for analog filter design, KEELOQ® security
ICs, CAN, IrDA®, PowerSmart battery management,
SEEVAL® evaluation system, Sigma-Delta ADC, flow
rate sensing, plus many more.
Also available are starter kits that contain everything
needed to experience the specified device. This usually
includes a single application and debug capability, all
on one board.
Check the Microchip web page (www.microchip.com)
for the complete list of demonstration, development
and evaluation kits.

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30.0

ELECTRICAL CHARACTERISTICS

This section provides an overview of the PIC32MX1XX/2XX 28/36/44-pin Family electrical characteristics for
devices that operate at 40 MHz. Refer to Section 31.0 “50 MHz Electrical Characteristics” for additional
specifications for operations at higher frequency. Additional information will be provided in future revisions of this
document as it becomes available.
Absolute maximum ratings for the PIC32MX1XX/2XX 28/36/44-pin Family devices are listed below. Exposure to these
maximum rating conditions for extended periods may affect device reliability. Functional operation of the device at these
or any other conditions, above the parameters indicated in the operation listings of this specification, is not implied.

Absolute Maximum Ratings
(See Note 1)
Ambient temperature under bias............................................................................................................ .-40°C to +105°C
Storage temperature .............................................................................................................................. -65°C to +150°C
Voltage on VDD with respect to VSS ......................................................................................................... -0.3V to +4.0V
Voltage on any pin that is not 5V tolerant, with respect to VSS (Note 3)......................................... -0.3V to (VDD + 0.3V)
Voltage on any 5V tolerant pin with respect to VSS when VDD  2.3V (Note 3)........................................ -0.3V to +5.5V
Voltage on any 5V tolerant pin with respect to VSS when VDD < 2.3V (Note 3)........................................ -0.3V to +3.6V
Voltage on D+ or D- pin with respect to VUSB3V3 .................................................................... -0.3V to (VUSB3V3 + 0.3V)
Voltage on VBUS with respect to VSS ....................................................................................................... -0.3V to +5.5V
Maximum current out of VSS pin(s) .......................................................................................................................300 mA
Maximum current into VDD pin(s) (Note 2)............................................................................................................300 mA
Maximum output current sunk by any I/O pin..........................................................................................................15 mA
Maximum output current sourced by any I/O pin ....................................................................................................15 mA
Maximum current sunk by all ports .......................................................................................................................200 mA
Maximum current sourced by all ports (Note 2)....................................................................................................200 mA
Note 1: Stresses above those listed under “Absolute Maximum Ratings” may cause permanent damage to the
device. This is a stress rating only and functional operation of the device at those or any other conditions,
above those indicated in the operation listings of this specification, is not implied. Exposure to maximum
rating conditions for extended periods may affect device reliability.
2: Maximum allowable current is a function of device maximum power dissipation (see Table 30-2).
3: See the “Pin Diagrams” section for the 5V tolerant pins.

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30.1

DC Characteristics

TABLE 30-1:

OPERATING MIPS VS. VOLTAGE
Max. Frequency

VDD Range
(in Volts)(1)

Temp. Range
(in °C)

PIC32MX1XX/2XX 28/36/44-pin Family

DC5

2.3-3.6V

-40°C to +85°C

40 MHz

DC5b

2.3-3.6V

-40°C to +105°C

40 MHz

Characteristic

Note 1:

Overall functional device operation at VBORMIN < VDD < VDDMIN is tested, but not characterized. All device
Analog modules, such as ADC, etc., will function, but with degraded performance below VDDMIN. Refer to
parameter BO10 in Table 30-11 for BOR values.

TABLE 30-2:

THERMAL OPERATING CONDITIONS
Rating

Symbol

Min.

Typical

Max.

Unit

TJ
TA

-40
-40

—
—

+125
+85

°C
°C

TJ

-40

—

+140

°C

TA

-40

—

+105

°C

Industrial Temperature Devices
Operating Junction Temperature Range
Operating Ambient Temperature Range
V-temp Temperature Devices
Operating Junction Temperature Range
Operating Ambient Temperature Range
Power Dissipation:
Internal Chip Power Dissipation:
PINT = VDD x (IDD – S IOH)
I/O Pin Power Dissipation:
I/O = S (({VDD – VOH} x IOH) + S (VOL x IOL))
Maximum Allowed Power Dissipation

TABLE 30-3:

PD

PINT + PI/O

W

PDMAX

(TJ – TA)/JA

W

THERMAL PACKAGING CHARACTERISTICS
Characteristics

Symbol Typical

Max.

Unit

Notes

Package Thermal Resistance, 28-pin SSOP

JA

71

—

°C/W

1

Package Thermal Resistance, 28-pin SOIC

JA

50

—

°C/W

1

Package Thermal Resistance, 28-pin SPDIP

JA

42

—

°C/W

1

Package Thermal Resistance, 28-pin QFN

JA

35

—

°C/W

1

Package Thermal Resistance, 36-pin VTLA

JA

31

—

°C/W

1

Package Thermal Resistance, 44-pin QFN

JA

32

—

°C/W

1

Package Thermal Resistance, 44-pin TQFP

JA

45

—

°C/W

1

Package Thermal Resistance, 44-pin VTLA

JA

30

—

°C/W

1

Note 1:

Junction to ambient thermal resistance, Theta-JA (JA) numbers are achieved by package simulations.

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TABLE 30-4:

DC TEMPERATURE AND VOLTAGE SPECIFICATIONS
Standard Operating Conditions: 2.3V to 3.6V
(unless otherwise stated)
Operating temperature -40°C  TA  +85°C for Industrial
-40°C  TA  +105°C for V-temp

DC CHARACTERISTICS

Param.
Symbol
No.

Characteristics

Min.

Typ.

Max.

Units

Conditions

Operating Voltage
DC10

VDD

Supply Voltage (Note 2)

2.3

—

3.6

V

—

DC12

VDR

RAM Data Retention Voltage
(Note 1)

1.75

—

—

V

—

DC16

VPOR

VDD Start Voltage
to Ensure Internal Power-on Reset
Signal

1.75

—

2.1

V

—

DC17

SVDD

VDD Rise Rate
to Ensure Internal Power-on Reset
Signal

0.00005

—

0.115

V/s

—

Note 1:
2:

This is the limit to which VDD can be lowered without losing RAM data.
Overall functional device operation at VBORMIN < VDD < VDDMIN is tested, but not characterized. All device
Analog modules, such as ADC, etc., will function, but with degraded performance below VDDMIN. Refer to
parameter BO10 in Table 30-11 for BOR values.

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TABLE 30-5:

DC CHARACTERISTICS: OPERATING CURRENT (IDD)
Standard Operating Conditions: 2.3V to 3.6V
(unless otherwise stated)
Operating temperature -40°C  TA  +85°C for Industrial
-40°C  TA  +105°C for V-temp

DC CHARACTERISTICS

Parameter
No.

Typical(3)

Max.

Units

Conditions

Operating Current (IDD) (Notes 1, 2, 5)
DC20

2

3

mA

4 MHz (Note 4)

DC21

7

10.5

mA

10 MHz

DC22

10

15

mA

20 MHz (Note 4)

DC23

15

23

mA

30 MHz (Note 4)

DC24

20

30

mA

DC25

100

150

µA

Note 1:

2:

3:
4:
5:

40 MHz
+25ºC, 3.3V

LPRC (31 kHz) (Note 4)

A device’s IDD supply current is mainly a function of the operating voltage and frequency. Other factors,
such as PBCLK (Peripheral Bus Clock) frequency, number of peripheral modules enabled, internal code
execution pattern, execution from Program Flash memory vs. SRAM, I/O pin loading and switching rate,
oscillator type, as well as temperature, can have an impact on the current consumption.
The test conditions for IDD measurements are as follows:
• Oscillator mode is EC (for 8 MHz and below) and EC+PLL (for above 8 MHz) with OSC1 driven by
external square wave from rail-to-rail, (OSC1 input clock input over/undershoot < 100 mV required)
• OSC2/CLKO is configured as an I/O input pin
• USB PLL oscillator is disabled if the USB module is implemented, PBCLK divisor = 1:8
• CPU, Program Flash, and SRAM data memory are operational, SRAM data memory Wait states = 1
• No peripheral modules are operating, (ON bit = 0), but the associated PMD bit is cleared
• WDT, Clock Switching, Fail-Safe Clock Monitor, and Secondary Oscillator are disabled
• All I/O pins are configured as inputs and pulled to VSS
• MCLR = VDD
• CPU executing while(1) statement from Flash
• RTCC and JTAG are disabled
Data in “Typical” column is at 3.3V, 25°C at specified operating frequency unless otherwise stated.
Parameters are for design guidance only and are not tested.
This parameter is characterized, but not tested in manufacturing.
IPD electrical characteristics for devices with 256 KB Flash are only provided as Preliminary information.

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TABLE 30-6:

DC CHARACTERISTICS: IDLE CURRENT (IIDLE)
Standard Operating Conditions: 2.3V to 3.6V
(unless otherwise stated)
Operating temperature -40°C  TA  +85°C for Industrial
-40°C  TA  +105°C for V-temp

DC CHARACTERISTICS

Parameter
No.

Typical(2)

Max.

Units

Conditions

Idle Current (IIDLE): Core Off, Clock on Base Current (Notes 1, 4)
DC30a

1

1.5

mA

4 MHz (Note 3)

DC31a

2

3

mA

10 MHz

DC32a

4

6

mA

20 MHz (Note 3)

DC33a

5.5

8

mA

30 MHz (Note 3)

DC34a

7.5

11

mA

DC37a

100

—

µA

-40°C

DC37b

250

—

µA

+25°C

DC37c

380

—

µA

+85°C

Note 1:

2:
3:
4:

40 MHz
3.3V

LPRC (31 kHz)
(Note 3)

The test conditions for IIDLE current measurements are as follows:
• Oscillator mode is EC (for 8 MHz and below) and EC+PLL (for above 8 MHz) with OSC1 driven by
external square wave from rail-to-rail, (OSC1 input clock input over/undershoot < 100 mV required)
• OSC2/CLKO is configured as an I/O input pin
• USB PLL oscillator is disabled if the USB module is implemented, PBCLK divisor = 1:8
• CPU is in Idle mode (CPU core Halted), and SRAM data memory Wait states = 1
• No peripheral modules are operating, (ON bit = 0), but the associated PMD bit is cleared
• WDT, Clock Switching, Fail-Safe Clock Monitor, and Secondary Oscillator are disabled
• All I/O pins are configured as inputs and pulled to VSS
• MCLR = VDD
• RTCC and JTAG are disabled
Data in the “Typical” column is at 3.3V, 25°C unless otherwise stated. Parameters are for design guidance
only and are not tested.
This parameter is characterized, but not tested in manufacturing.
IIDLE electrical characteristics for devices with 256 KB Flash are only provided as Preliminary information.

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TABLE 30-7:

DC CHARACTERISTICS: POWER-DOWN CURRENT (IPD)

DC CHARACTERISTICS
Param.
Typical(2)
No.

Max.

Standard Operating Conditions: 2.3V to 3.6V (unless otherwise stated)
Operating temperature -40°C  TA  +85°C for Industrial
-40°C  TA  +105°C for V-temp
Units

Conditions

Power-Down Current (IPD) (Notes 1, 5)
DC40k

44

70

A

-40°C

DC40l

44

70

A

+25°C

DC40n

168

259

A

+85°C

DC40m

335

536

µA

+105ºC

Base Power-Down Current

Module Differential Current
DC41e

5

20

A

3.6V

Watchdog Timer Current: IWDT (Note 3)

DC42e

23

50

A

3.6V

RTCC + Timer1 w/32 kHz Crystal: IRTCC (Note 3)

1000

1100

A

3.6V

ADC: IADC (Notes 3,4)

DC43d
Note 1:

2:
3:
4:
5:

The test conditions for IPD current measurements are as follows:
• Oscillator mode is EC (for 8 MHz and below) and EC+PLL (for above 8 MHz) with OSC1 driven by
external square wave from rail-to-rail, (OSC1 input clock input over/undershoot < 100 mV required)
• OSC2/CLKO is configured as an I/O input pin
• USB PLL oscillator is disabled if the USB module is implemented, PBCLK divisor = 1:8
• CPU is in Sleep mode, and SRAM data memory Wait states = 1
• No peripheral modules are operating, (ON bit = 0), but the associated PMD bit is set
• WDT, Clock Switching, Fail-Safe Clock Monitor, and Secondary Oscillator are disabled
• All I/O pins are configured as inputs and pulled to VSS
• MCLR = VDD
• RTCC and JTAG are disabled
Data in the “Typical” column is at 3.3V, 25°C unless otherwise stated. Parameters are for design guidance
only and are not tested.
The  current is the additional current consumed when the module is enabled. This current should be
added to the base IPD current.
Test conditions for ADC module differential current are as follows: Internal ADC RC oscillator enabled.
IPD electrical characteristics for devices with 256 KB Flash are only provided as Preliminary information.

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TABLE 30-8:

DC CHARACTERISTICS: I/O PIN INPUT SPECIFICATIONS

DC CHARACTERISTICS

Param.
Symbol
No.
VIL
DI10

Characteristics

Standard Operating Conditions: 2.3V to 3.6V (unless otherwise
stated)
Operating temperature
-40°C  TA  +85°C for Industrial
-40°C  TA  +105°C for V-temp
Min.

Typical(1)

Max.

Units

Conditions

Input Low Voltage
I/O Pins with PMP

VSS

—

0.15 VDD

V

I/O Pins

VSS

—

0.2 VDD

V

DI18

SDAx, SCLx

VSS

—

0.3 VDD

V

SMBus disabled
(Note 4)

DI19

SDAx, SCLx

VSS

—

0.8

V

SMBus enabled
(Note 4)

VIH

Input High Voltage
I/O Pins not 5V-tolerant(5)

DI20

0.65 VDD

—

VDD

V

(Note 4,6)

0.25 VDD + 0.8V

—

5.5

V

(Note 4,6)

I/O Pins 5V-tolerant(5)

0.65 VDD

—

5.5

V

DI28

SDAx, SCLx

0.65 VDD

—

5.5

V

SMBus disabled
(Note 4,6)

DI29

SDAx, SCLx

2.1

—

5.5

V

SMBus enabled,
2.3V  VPIN  5.5
(Note 4,6)

I/O Pins 5V-tolerant with
PMP(5)

DI30

ICNPU

Change Notification
Pull-up Current

—

—

-50

A

VDD = 3.3V, VPIN = VSS
(Note 3,6)

DI31

ICNPD

Change Notification
Pull-down Current(4)

—

—

-50

µA

VDD = 3.3V, VPIN = VDD

IIL

Input Leakage Current
(Note 3)

DI50

I/O Ports

—

—

+1

A

VSS  VPIN  VDD,
Pin at high-impedance

DI51

Analog Input Pins

—

—

+1

A

VSS  VPIN  VDD,
Pin at high-impedance

DI55

MCLR(2)

—

—

+1

A

VSS VPIN VDD

DI56

OSC1

—

—

+1

A

VSS VPIN VDD,
XT and HS modes

Note 1:
2:

3:
4:
5:
6:

Data in “Typical” column is at 3.3V, 25°C unless otherwise stated. Parameters are for design guidance only
and are not tested.
The leakage current on the MCLR pin is strongly dependent on the applied voltage level. The specified
levels represent normal operating conditions. Higher leakage current may be measured at different input
voltages.
Negative current is defined as current sourced by the pin.
This parameter is characterized, but not tested in manufacturing.
See the “Pin Diagrams” section for the 5V-tolerant pins.
The VIH specifications are only in relation to externally applied inputs, and not with respect to the userselectable internal pull-ups. External open drain input signals utilizing the internal pull-ups of the PIC32
device are guaranteed to be recognized only as a logic “high” internally to the PIC32 device, provided that
the external load does not exceed the minimum value of ICNPU. For External “input” logic inputs that require
a pull-up source, to guarantee the minimum VIH of those components, it is recommended to use an
external pull-up resistor rather than the internal pull-ups of the PIC32 device.

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TABLE 30-9:

DC CHARACTERISTICS: I/O PIN INPUT INJECTION CURRENT SPECIFICATIONS

DC CHARACTERISTICS
Param.
Symbol
No.
DI60a

IICL

DI60b

IICH

DI60c

Note 1:
2:
3:
4:
5:
6:

Characteristics
Input Low Injection
Current

Standard Operating Conditions: 2.3V to 3.6V (unless otherwise stated)
Operating temperature
-40°C  TA  +85°C for Industrial
-40°C  TA  +105°C for V-temp
Min.

Typ.(1)

Max.

Units

0

—

-5(2,5)

mA

0

—

+5(3,4,5)

mA

Conditions
This parameter applies to all pins,
with the exception of the power
pins.

This parameter applies to all pins,
with the exception of all 5V tolerant
pins, and the SOSCI, SOSCO,
OSC1, D+, and D- pins.
(6)
(6)
Total Input Injection
—
+20
mA
Absolute instantaneous sum of all ±
IICT
-20
Current (sum of all I/O
input injection currents from all I/O
and Control pins)
pins ( | IICL + | IICH | )  IICT )
Data in “Typical” column is at 3.3V, +25°C unless otherwise stated. Parameters are for design guidance
only and are not tested.
VIL source < (VSS - 0.3). Characterized but not tested.
VIH source > (VDD + 0.3) for non-5V tolerant pins only.
Digital 5V tolerant pins do not have an internal high side diode to VDD, and therefore, cannot tolerate any
“positive” input injection current.
Injection currents > | 0 | can affect the ADC results by approximately 4 to 6 counts (i.e., VIH Source > (VDD
+ 0.3) or VIL source < (VSS - 0.3)).
Any number and/or combination of I/O pins not excluded under IICL or IICH conditions are permitted provided the “absolute instantaneous” sum of the input injection currents from all pins do not exceed the specified limit. If Note 2, IICL = (((Vss - 0.3) - VIL source) / Rs). If Note 3, IICH = ((IICH source - (VDD + 0.3)) /
RS). RS = Resistance between input source voltage and device pin. If (VSS - 0.3)  VSOURCE  (VDD +
0.3), injection current = 0.
Input High Injection
Current

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TABLE 30-10: DC CHARACTERISTICS: I/O PIN OUTPUT SPECIFICATIONS
Standard Operating Conditions: 2.3V to 3.6V
(unless otherwise stated)
Operating temperature -40°C  TA  +85°C for Industrial
-40°C  TA  +105°C for V-temp

DC CHARACTERISTICS

Param. Symbol

Characteristic

Min.

Typ.

Max.

Units

Conditions

—

—

0.4

V

IOL  10 mA, VDD = 3.3V

Output High Voltage

1.5(1)

—

—

I/O Pins

2.0(1)

—

—

2.4

—

—

3.0(1)

—

—

Output Low Voltage
DO10

VOL
I/O Pins

DO20

Note 1:

VOH

IOH  -14 mA, VDD = 3.3V
V

IOH  -12 mA, VDD = 3.3V
IOH  -10 mA, VDD = 3.3V
IOH  -7 mA, VDD = 3.3V

Parameters are characterized, but not tested.

TABLE 30-11: ELECTRICAL CHARACTERISTICS: BOR
Standard Operating Conditions: 2.3V to 3.6V
(unless otherwise stated)
Operating temperature -40°C  TA  +85°C for Industrial
-40°C  TA  +105°C for V-temp

DC CHARACTERISTICS

Param.
Symbol
No.
BO10
Note 1:
2:

VBOR

Characteristics
BOR Event on VDD transition
high-to-low(2)

Min.(1) Typical
2.0

—

Max.

Units

Conditions

2.3

V

—

Parameters are for design guidance only and are not tested in manufacturing.
Overall functional device operation at VBORMIN < VDD < VDDMIN is tested, but not characterized. All device
Analog modules, such as ADC, etc., will function, but with degraded performance below VDDMIN.

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TABLE 30-12: DC CHARACTERISTICS: PROGRAM MEMORY
DC CHARACTERISTICS

Param.
Symbol
No.

Characteristics

Standard Operating Conditions: 2.3V to 3.6V
(unless otherwise stated)
Operating temperature -40°C  TA  +85°C for Industrial
-40°C  TA  +105°C for V-temp
Min.

Typical(1)

Max.

Units

Conditions

Program Flash Memory(3)
EP

Cell Endurance

20,000

—

—

E/W

—

D131

VPR

VDD for Read

2.3

—

3.6

V

—

D132

VPEW

VDD for Erase or Write

2.3

—

3.6

V

—

D134

TRETD

Characteristic Retention

20

—

—

Year Provided no other specifications
are violated

D135

IDDP

Supply Current during
Programming

—

10

—

mA

TWW

Word Write Cycle Time

—

411

—

D136

TRW

Row Write Cycle Time

—

6675

—

D137

TPE

Page Erase Cycle Time

—

20011

—

TCE

Chip Erase Cycle Time

—

80180

—

Note 1:
2:

3:
4:

FRC Cycles

D130

—
See Note 4
See Note 2,4
See Note 4
See Note 4

Data in “Typical” column is at 3.3V, 25°C unless otherwise stated.
The minimum SYSCLK for row programming is 4 MHz. Care should be taken to minimize bus activities
during row programming, such as suspending any memory-to-memory DMA operations. If heavy bus
loads are expected, selecting Bus Matrix Arbitration mode 2 (rotating priority) may be necessary. The
default Arbitration mode is mode 1 (CPU has lowest priority).
Refer to the “PIC32 Flash Programming Specification” (DS60001145) for operating conditions during
programming and erase cycles.
This parameter depends on FRC accuracy (See Table 30-19) and FRC tuning values (See Register 8-2).

DS60001168K-page 268

 2011-2018 Microchip Technology Inc.

PIC32MX1XX/2XX 28/36/44-PIN FAMILY
TABLE 30-13: COMPARATOR SPECIFICATIONS
Standard Operating Conditions (see Note 4): 2.3V to 3.6V
(unless otherwise stated)
Operating temperature -40°C  TA  +85°C for Industrial
-40°C  TA  +105°C for V-temp

DC CHARACTERISTICS

Param.
Symbol
No.

Characteristics

Min.

Typical

Max.

Units

Comments

D300

VIOFF

Input Offset Voltage

—

±7.5

±25

mV

AVDD = VDD,
AVSS = VSS

D301

VICM

Input Common Mode Voltage

0

—

VDD

V

AVDD = VDD,
AVSS = VSS
(Note 2)

D302

CMRR

Common Mode Rejection Ratio

55

—

—

dB

Max VICM = (VDD - 1)V
(Note 2)

D303A TRESP

Large Signal Response Time

—

150

400

ns

AVDD = VDD, AVSS = VSS
(Note 1,2)

D303B TSRESP

Small Signal Response Time

—

1

—

s

This is defined as an input
step of 50 mV with 15 mV
of overdrive (Note 2)

D304

ON2OV

Comparator Enabled to Output
Valid

—

—

10

s

Comparator module is
configured before setting
the comparator ON bit
(Note 2)

D305

IVREF

Internal Voltage Reference

1.14

1.2

1.26

V

D312

TSET

Internal Comparator Voltage
DRC Reference Setting time

—

—

10

µs

Note 1:
2:
3:
4:

—
(Note 3)

Response time measured with one comparator input at (VDD – 1.5)/2, while the other input transitions
from VSS to VDD.
These parameters are characterized but not tested.
Settling time measured while CVRR = 1 and CVR<3:0> transitions from ‘0000’ to ‘1111’. This parameter is
characterized, but not tested in manufacturing.
The Comparator module is functional at VBORMIN < VDD < VDDMIN, but with degraded performance. Unless
otherwise stated, module functionality is tested, but not characterized.

 2011-2018 Microchip Technology Inc.

DS60001168K-page 269

PIC32MX1XX/2XX 28/36/44-PIN FAMILY
TABLE 30-14: COMPARATOR VOLTAGE REFERENCE SPECIFICATIONS
Standard Operating Conditions: 2.3V to 3.6V
(unless otherwise stated)
Operating temperature -40°C  TA  +85°C for Industrial
-40°C  TA  +105°C for V-temp

DC CHARACTERISTICS

Param.
Symbol
No.

Characteristics

D312

TSET

D313

DACREFH CVREF Input Voltage
Reference Range

D314

DVREF

D315

DACRES

D316

DACACC

Note 1:
2:

Min.

Typ.

Max.

Units

—

—

10

µs

See Note 1

Internal 4-bit DAC
Comparator Reference
Settling time

Comments

AVSS

—

AVDD

V

CVRSRC with CVRSS = 0

VREF-

—

VREF+

V

CVRSRC with CVRSS = 1

0

—

0.625 x
DACREFH

V

0 to 0.625 DACREFH with
DACREFH/24 step size

0.25 x
DACREFH

—

0.719 x
DACREFH

V

0.25 x DACREFH to 0.719
DACREFH with
DACREFH/32 step size

—

—

DACREFH/24

—

CVRCON = 1

—

—

DACREFH/32

—

CVRCON = 0

—

—

1/4

LSB

DACREFH/24,
CVRCON = 1

—

—

1/2

LSB

DACREFH/32,
CVRCON = 0

CVREF Programmable
Output Range

Resolution
Absolute Accuracy(2)

Settling time was measured while CVRR = 1 and CVR<3:0> transitions from ‘0000’ to ‘1111’. This
parameter is characterized, but is not tested in manufacturing.
These parameters are characterized but not tested.

TABLE 30-15: INTERNAL VOLTAGE REGULATOR SPECIFICATIONS
Standard Operating Conditions: 2.3V to 3.6V
(unless otherwise stated)
Operating temperature -40°C  TA  +85°C for Industrial
-40°C  TA  +105°C for V-temp

DC CHARACTERISTICS

Param.
No.
D321

Symbol
CEFC

Characteristics

Min.

Typical

Max.

Units

Comments

External Filter Capacitor Value

8

10

—

F

Capacitor must be low series
resistance (1 ohm). Typical
voltage on the VCAP pin is
1.8V.

DS60001168K-page 270

 2011-2018 Microchip Technology Inc.

PIC32MX1XX/2XX 28/36/44-PIN FAMILY
30.2

AC Characteristics and Timing
Parameters

The information contained in this section defines
PIC32MX1XX/2XX 28/36/44-pin Family AC characteristics and timing parameters.

FIGURE 30-1:

LOAD CONDITIONS FOR DEVICE TIMING SPECIFICATIONS

Load Condition 1 – for all pins except OSC2

Load Condition 2 – for OSC2

VDD/2
CL

Pin

RL

VSS
CL

Pin

RL = 464
CL = 50 pF for all pins
50 pF for OSC2 pin (EC mode)

VSS

TABLE 30-16: CAPACITIVE LOADING REQUIREMENTS ON OUTPUT PINS
AC CHARACTERISTICS

Standard Operating Conditions: 2.3V to 3.6V
(unless otherwise stated)
Operating temperature -40°C  TA  +85°C for Industrial
-40°C  TA  +105°C for V-temp

Param.
Symbol
No.

Min.

Typical(1)

Max.

Units

Conditions

15

pF

In XT ans HS modes, when external crystal is used to drive OSC1

DO50

Characteristics

Cosco

OSC2 Pin

—

—

DO56

CIO

All I/O pins and OSC2

—

—

50

pF

EC mode

DO58

CB

SCLx, SDAx

—

—

400

pF

In I2C mode

Note 1:

Data in “Typical” column is at 3.3V, 25°C unless otherwise stated. Parameters are for design guidance only
and are not tested.

FIGURE 30-2:

EXTERNAL CLOCK TIMING
OS20

OS30

OS31

OSC1
OS30

 2011-2018 Microchip Technology Inc.

OS31

DS60001168K-page 271

PIC32MX1XX/2XX 28/36/44-PIN FAMILY
TABLE 30-17: EXTERNAL CLOCK TIMING REQUIREMENTS
Standard Operating Conditions: 2.3V to 3.6V
(unless otherwise stated)
Operating temperature -40°C  TA  +85°C for Industrial
-40°C  TA  +105°C for V-temp

AC CHARACTERISTICS

Param.
Symbol
No.

Min.

Typical(1)

Max.

Units

Conditions

External CLKI Frequency
(External clocks allowed only
in EC and ECPLL modes)

DC
4

—
—

40
40

MHz
MHz

EC (Note 4)
ECPLL (Note 3)

Oscillator Crystal Frequency

3

—

10

MHz

XT (Note 4)

OS12

4

—

10

MHz

XTPLL
(Notes 3,4)

OS13

10

—

25

MHz

HS (Note 5)

OS14

10

—

25

MHz

HSPLL
(Notes 3,4)

32

32.768

100

kHz

SOSC (Note 4)

—

—

—

—

See parameter
OS10 for FOSC
value

OS10

FOSC

OS11

Characteristics

OS15
OS20

TOSC

TOSC = 1/FOSC = TCY (Note 2)

OS30

TOSL,
TOSH

External Clock In (OSC1)
High or Low Time

0.45 x TOSC

—

—

ns

EC (Note 4)

OS31

TOSR,
TOSF

External Clock In (OSC1)
Rise or Fall Time

—

—

0.05 x TOSC

ns

EC (Note 4)

OS40

TOST

Oscillator Start-up Timer Period
(Only applies to HS, HSPLL,
XT, XTPLL and SOSC Clock
Oscillator modes)

—

1024

—

OS41

TFSCM

Primary Clock Fail Safe
Time-out Period

—

2

—

OS42

GM

External Oscillator
Transconductance (Primary
Oscillator only)

—

12

—

Note 1:
2:

3:
4:

TOSC (Note 4)

ms

(Note 4)

mA/V VDD = 3.3V,
TA = +25°C
(Note 4)

Data in “Typical” column is at 3.3V, 25°C unless otherwise stated. Parameters are characterized but are not
tested.
Instruction cycle period (TCY) equals the input oscillator time base period. All specified values are based on
characterization data for that particular oscillator type under standard operating conditions with the device
executing code. Exceeding these specified limits may result in an unstable oscillator operation and/or
higher than expected current consumption. All devices are tested to operate at “min.” values with an
external clock applied to the OSC1/CLKI pin.
PLL input requirements: 4 MHZ  FPLLIN  5 MHZ (use PLL prescaler to reduce FOSC). This parameter is
characterized, but tested at 10 MHz only at manufacturing.
This parameter is characterized, but not tested in manufacturing.

DS60001168K-page 272

 2011-2018 Microchip Technology Inc.

PIC32MX1XX/2XX 28/36/44-PIN FAMILY
TABLE 30-18: PLL CLOCK TIMING SPECIFICATIONS
Standard Operating Conditions: 2.3V to 3.6V
(unless otherwise stated)
Operating temperature -40°C  TA  +85°C for Industrial
-40°C  TA  +105°C for V-temp

AC CHARACTERISTICS

Param.
Symbol
No.

Characteristics(1)

Min.

Typical

Max.

Units

Conditions

OS50

FPLLI

PLL Voltage Controlled
Oscillator (VCO) Input
Frequency Range

3.92

—

5

MHz

OS51

FSYS

On-Chip VCO System
Frequency

60

—

120

MHz

—

OS52

TLOCK

PLL Start-up Time (Lock Time)

—

—

2

ms

—

-0.25

—

+0.25

%

OS53
Note 1:
2:

DCLK

Stability(2)

CLKO
(Period Jitter or Cumulative)

ECPLL, HSPLL, XTPLL,
FRCPLL modes

Measured over 100 ms
period

These parameters are characterized, but not tested in manufacturing.
This jitter specification is based on clock-cycle by clock-cycle measurements. To get the effective jitter for
individual time-bases on communication clocks, use the following formula:
D CLK
-------------------------------------------------------------EffectiveJitter
SYSCLK
---------------------------------------------------------CommunicationClock
For example, if SYSCLK = 40 MHz and SPI bit rate = 20 MHz, the effective jitter is as follows:
EffectiveJitter

TABLE 30-19:

D CLK
-------------1.41

INTERNAL FRC ACCURACY

AC CHARACTERISTICS

Param.
No.

D CLK
------------40
-----20

Characteristics

Standard Operating Conditions: 2.3V to 3.6V
(unless otherwise stated)
Operating temperature
-40°C  TA  +85°C for Industrial
-40°C  TA  +105°C for V-temp
Min.

Typical

Max.

Units

Conditions

—

+0.9

%

—

Internal FRC Accuracy @ 8.00 MHz(1)
F20b
Note 1:

FRC

-0.9

Frequency calibrated at 25°C and 3.3V. The TUN bits can be used to compensate for temperature drift.

TABLE 30-20: INTERNAL LPRC ACCURACY
AC CHARACTERISTICS

Param.
No.

Characteristics

Standard Operating Conditions: 2.3V to 3.6V
(unless otherwise stated)
Operating temperature -40°C  TA  +85°C for Industrial
-40°C  TA  +105°C for V-temp
Min.

Typical

Max.

Units

Conditions

-15

—

+15

%

—

LPRC @ 31.25 kHz(1)
F21
Note 1:

LPRC

Change of LPRC frequency as VDD changes.

 2011-2018 Microchip Technology Inc.

DS60001168K-page 273

PIC32MX1XX/2XX 28/36/44-PIN FAMILY
FIGURE 30-3:

I/O TIMING CHARACTERISTICS

I/O Pin
(Input)
DI35
DI40
I/O Pin
(Output)
Note: Refer to Figure 30-1 for load conditions.

DO31
DO32

TABLE 30-21: I/O TIMING REQUIREMENTS
Standard Operating Conditions: 2.3V to 3.6V
(unless otherwise stated)
Operating temperature -40°C  TA  +85°C for Industrial
-40°C  TA  +105°C for V-temp

AC CHARACTERISTICS

Param.
No.

Characteristics(2)

Symbol

Min.

Typical(1)

Max.

Units

—

5

15

ns

VDD < 2.5V

Conditions

DO31

TIOR

Port Output Rise Time

—

5

10

ns

VDD > 2.5V

DO32

TIOF

Port Output Fall Time

—

5

15

ns

VDD < 2.5V

—

5

10

ns

VDD > 2.5V

DI35

TINP

INTx Pin High or Low Time

10

—

—

ns

—

DI40

TRBP

CNx High or Low Time (input)

2

—

—

TSYSCLK

—

Note 1:
2:

Data in “Typical” column is at 3.3V, 25°C unless otherwise stated.
This parameter is characterized, but not tested in manufacturing.

DS60001168K-page 274

 2011-2018 Microchip Technology Inc.

PIC32MX1XX/2XX 28/36/44-PIN FAMILY
FIGURE 30-4:

POWER-ON RESET TIMING CHARACTERISTICS

Internal Voltage Regulator Enabled
Clock Sources = (FRC, FRCDIV, FRCDIV16, FRCPLL, EC, ECPLL and LPRC)
VDD

VPOR

(TSYSDLY)
SY02

Power-up Sequence
(Note 2)
CPU Starts Fetching Code

SY00
(TPU)
(Note 1)

Internal Voltage Regulator Enabled
Clock Sources = (HS, HSPLL, XT, XTPLL and SOSC)
VDD

VPOR

(TSYSDLY)
SY02

Power-up Sequence
(Note 2)
SY00
(TPU)
(Note 1)
Note 1:
2:

SY10
(TOST)

CPU Starts Fetching Code

The power-up period will be extended if the power-up sequence completes before the device exits from BOR
(VDD < VDDMIN).
Includes interval voltage regulator stabilization delay.

 2011-2018 Microchip Technology Inc.

DS60001168K-page 275

PIC32MX1XX/2XX 28/36/44-PIN FAMILY
FIGURE 30-5:

EXTERNAL RESET TIMING CHARACTERISTICS

Clock Sources = (FRC, FRCDIV, FRCDIV16, FRCPLL, EC, ECPLL and LPRC)
MCLR

TMCLR
(SY20)
BOR

TBOR
(SY30)

(TSYSDLY)
SY02

Reset Sequence

CPU Starts Fetching Code

Clock Sources = (HS, HSPLL, XT, XTPLL and SOSC)

(TSYSDLY)
SY02

Reset Sequence

CPU Starts Fetching Code

TOST
(SY10)

TABLE 30-22: RESETS TIMING
Standard Operating Conditions: 2.3V to 3.6V
(unless otherwise stated)
Operating temperature -40°C  TA  +85°C for Industrial
-40°C  TA  +105°C for V-temp

AC CHARACTERISTICS

Param.
Symbol
No.

Characteristics(1)

Min.

Typical(2)

Max.

Units

Conditions

SY00

TPU

Power-up Period
Internal Voltage Regulator Enabled

—

400

600

s

—

SY02

TSYSDLY System Delay Period:
Time Required to Reload Device
Configuration Fuses plus SYSCLK
Delay before First instruction is
Fetched.

—

s +
8 SYSCLK
cycles

—

—

—

SY20

TMCLR

MCLR Pulse Width (low)

2

—

—

s

—

SY30

TBOR

BOR Pulse Width (low)

—

1

—

s

—

Note 1:
2:

These parameters are characterized, but not tested in manufacturing.
Data in “Typ” column is at 3.3V, 25°C unless otherwise stated. Characterized by design but not tested.

DS60001168K-page 276

 2011-2018 Microchip Technology Inc.

PIC32MX1XX/2XX 28/36/44-PIN FAMILY
FIGURE 30-6:

TIMER1, 2, 3, 4, 5 EXTERNAL CLOCK TIMING CHARACTERISTICS

TxCK
Tx11

Tx10
Tx15

Tx20

OS60
TMRx

Note: Refer to Figure 30-1 for load conditions.

TABLE 30-23: TIMER1 EXTERNAL CLOCK TIMING REQUIREMENTS
Standard Operating Conditions: 2.3V to 3.6V
(unless otherwise stated)
Operating temperature -40°C  TA  +85°C for Industrial
-40°C  TA  +105°C for V-temp

AC CHARACTERISTICS(1)

Param.
No.
TA10

TA11

TA15

Symbol
TTXH

TTXL

TTXP

Characteristics(2)
TxCK
High Time

TxCK
Low Time

Typical Max. Units

Conditions

Synchronous,
with prescaler

[(12.5 ns or 1 TPB)/N]
+ 25 ns

—

—

ns

Must also meet
parameter TA15

Asynchronous,
with prescaler

10

—

—

ns

—

Synchronous,
with prescaler

[(12.5 ns or 1 TPB)/N]
+ 25 ns

—

—

ns

Must also meet
parameter TA15

Asynchronous,
with prescaler

10

—

—

ns

—

[(Greater of 25 ns or
2 TPB)/N] + 30 ns

—

—

ns

VDD > 2.7V

[(Greater of 25 ns or
2 TPB)/N] + 50 ns

—

—

ns

VDD < 2.7V

20

—

—

ns

VDD > 2.7V
(Note 3)

50

—

—

ns

VDD < 2.7V
(Note 3)

32

—

100

kHz

—

—

—

1

TPB

—

TxCK
Synchronous,
Input Period with prescaler

Asynchronous,
with prescaler

OS60

FT1

TA20

TCKEXTMRL Delay from External TxCK
Clock Edge to Timer
Increment

Note 1:
2:
3:

Min.

SOSC1/T1CK Oscillator
Input Frequency Range
(oscillator enabled by setting
the TCS (T1CON<1>) bit)

Timer1 is a Type A timer.
This parameter is characterized, but not tested in manufacturing.
N = Prescale Value (1, 8, 64, 256).

 2011-2018 Microchip Technology Inc.

DS60001168K-page 277

PIC32MX1XX/2XX 28/36/44-PIN FAMILY
TABLE 30-24: TIMER2, 3, 4, 5 EXTERNAL CLOCK TIMING REQUIREMENTS
Standard Operating Conditions: 2.3V to 3.6V
(unless otherwise stated)
Operating temperature -40°C  TA  +85°C for Industrial
-40°C  TA  +105°C for V-temp

AC CHARACTERISTICS

Param.
No.

Symbol

Characteristics(1)

Min.

Max. Units

TB10

TTXH

TxCK
Synchronous, with
High Time prescaler

[(12.5 ns or 1 TPB)/N]
+ 25 ns

—

ns

TB11

TTXL

TxCK
Synchronous, with
Low Time prescaler

[(12.5 ns or 1 TPB)/N]
+ 25 ns

—

ns

Conditions
Must also meet N = prescale
parameter
value
TB15
(1, 2, 4, 8,
Must also meet 16, 32, 64,
256)
parameter
TB15

TB15

TB20

TTXP

TxCK
Input
Period

Synchronous, with
prescaler

[(Greater of [(25 ns or
2 TPB)/N] + 30 ns

—

ns

VDD > 2.7V

[(Greater of [(25 ns or
2 TPB)/N] + 50 ns

—

ns

VDD < 2.7V

—

1

TPB

TCKEXTMRL Delay from External TxCK
Clock Edge to Timer Increment

Note 1:

—

These parameters are characterized, but not tested in manufacturing.

FIGURE 30-7:

INPUT CAPTURE (CAPx) TIMING CHARACTERISTICS
ICx

IC10

IC11
IC15

Note: Refer to Figure 30-1 for load conditions.

TABLE 30-25: INPUT CAPTURE MODULE TIMING REQUIREMENTS
AC CHARACTERISTICS

Param.
Symbol
No.

Standard Operating Conditions: 2.3V to 3.6V
(unless otherwise stated)
Operating temperature -40°C  TA  +85°C for Industrial
-40°C  TA  +105°C for V-temp

Characteristics(1)

Min.

Max.

Units

Conditions

IC10

TCCL

ICx Input Low Time

[(12.5 ns or 1 TPB)/N]
+ 25 ns

—

ns

Must also
meet
parameter
IC15.

IC11

TCCH

ICx Input High Time

[(12.5 ns or 1 TPB)/N]
+ 25 ns

—

ns

Must also
meet
parameter
IC15.

IC15

TCCP

ICx Input Period

[(25 ns or 2 TPB)/N]
+ 50 ns

—

ns

Note 1:

These parameters are characterized, but not tested in manufacturing.

DS60001168K-page 278

N = prescale
value (1, 4, 16)

—

 2011-2018 Microchip Technology Inc.

PIC32MX1XX/2XX 28/36/44-PIN FAMILY
FIGURE 30-8:

OUTPUT COMPARE MODULE (OCx) TIMING CHARACTERISTICS

OCx

(Output Compare
or PWM mode)

OC10

OC11

Note: Refer to Figure 30-1 for load conditions.

TABLE 30-26: OUTPUT COMPARE MODULE TIMING REQUIREMENTS
Standard Operating Conditions: 2.3V to 3.6V
(unless otherwise stated)
Operating temperature -40°C  TA  +85°C for Industrial
-40°C  TA  +105°C for V-temp

AC CHARACTERISTICS

Param.
Symbol
No.

Characteristics(1)

Min.

Typical(2)

Max.

Units

Conditions

OC10

TCCF

OCx Output Fall Time

—

—

—

ns

See parameter DO32

OC11

TCCR

OCx Output Rise Time

—

—

—

ns

See parameter DO31

Note 1:
2:

These parameters are characterized, but not tested in manufacturing.
Data in “Typical” column is at 3.3V, 25°C unless otherwise stated. Parameters are for design guidance only
and are not tested.

FIGURE 30-9:

OCx/PWM MODULE TIMING CHARACTERISTICS
OC20

OCFA/OCFB
OC15
OCx

OCx is tri-stated

Note: Refer to Figure 30-1 for load conditions.

TABLE 30-27: SIMPLE OCx/PWM MODE TIMING REQUIREMENTS
Standard Operating Conditions: 2.3V to 3.6V
(unless otherwise stated)
Operating temperature -40°C  TA  +85°C for Industrial
-40°C  TA  +105°C for V-temp

AC CHARACTERISTICS

Param
No.

Symbol

Characteristics(1)

Min

Typical(2)

Max

Units

Conditions

OC15

TFD

Fault Input to PWM I/O Change

—

—

50

ns

—

OC20

TFLT

Fault Input Pulse Width

50

—

—

ns

—

Note 1:
2:

These parameters are characterized, but not tested in manufacturing.
Data in “Typical” column is at 3.3V, 25°C unless otherwise stated. Parameters are for design guidance only
and are not tested.

 2011-2018 Microchip Technology Inc.

DS60001168K-page 279

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FIGURE 30-10:

SPIx MODULE MASTER MODE (CKE = 0) TIMING CHARACTERISTICS

SCKx
(CKP = 0)
SP11

SP10

SP21

SP20

SP20

SP21

SCKx
(CKP = 1)
SP35

MSb

SDOx

Bit 14 - - - - - -1

SP31
SDIx

MSb In

LSb
SP30
LSb In

Bit 14 - - - -1

SP40 SP41
Note: Refer to Figure 30-1 for load conditions.

TABLE 30-28: SPIx MASTER MODE (CKE = 0) TIMING REQUIREMENTS
Standard Operating Conditions: 2.3V to 3.6V
(unless otherwise stated)
Operating temperature -40°C  TA  +85°C for Industrial
-40°C  TA  +105°C for V-temp

AC CHARACTERISTICS

Param.
No.

Symbol

Characteristics(1)

Min.

Typical(2) Max.

Units

Conditions

SP10

TSCL

SCKx Output Low Time
(Note 3)

TSCK/2

—

—

ns

—

SP11

TSCH

SCKx Output High Time
(Note 3)

TSCK/2

—

—

ns

—

SP20

TSCF

SCKx Output Fall Time
(Note 4)

—

—

—

ns

See parameter DO32

SP21

TSCR

SCKx Output Rise Time
(Note 4)

—

—

—

ns

See parameter DO31

SP30

TDOF

SDOx Data Output Fall Time
(Note 4)

—

—

—

ns

See parameter DO32

SP31

TDOR

SDOx Data Output Rise Time
(Note 4)

—

—

—

ns

See parameter DO31

SP35

TSCH2DOV, SDOx Data Output Valid after
TSCL2DOV SCKx Edge

—

—

15

ns

VDD > 2.7V

—

—

20

ns

VDD < 2.7V

SP40

TDIV2SCH,
TDIV2SCL

Setup Time of SDIx Data Input
to SCKx Edge

10

—

—

ns

—

SP41

TSCH2DIL,
TSCL2DIL

Hold Time of SDIx Data Input
to SCKx Edge

10

—

—

ns

—

Note 1:
2:
3:
4:

These parameters are characterized, but not tested in manufacturing.
Data in “Typical” column is at 3.3V, 25°C unless otherwise stated. Parameters are for design guidance
only and are not tested.
The minimum clock period for SCKx is 50 ns. Therefore, the clock generated in Master mode must not
violate this specification.
Assumes 50 pF load on all SPIx pins.

DS60001168K-page 280

 2011-2018 Microchip Technology Inc.

PIC32MX1XX/2XX 28/36/44-PIN FAMILY
FIGURE 30-11:

SPIx MODULE MASTER MODE (CKE = 1) TIMING CHARACTERISTICS
SP36

SCKX
(CKP = 0)
SP11
SCKX
(CKP = 1)

SP10

SP21

SP20

SP20

SP21

SP35

LSb

Bit 14 - - - - - -1

MSb

SDOX

SP30,SP31
SDIX

MSb In
SP40

Bit 14 - - - -1

LSb In

SP41

Note: Refer to Figure 30-1 for load conditions.

TABLE 30-29: SPIx MODULE MASTER MODE (CKE = 1) TIMING REQUIREMENTS
Standard Operating Conditions: 2.3V to 3.6V
(unless otherwise stated)
Operating temperature -40°C  TA  +85°C for Industrial
-40°C  TA  +105°C for V-temp

AC CHARACTERISTICS

Param.
No.

Symbol

Characteristics(1)

Min.

Typ.(2)

Max.

Units

Conditions

SP10

TSCL

SCKx Output Low Time (Note 3)

TSCK/2

—

—

ns

—

SP11

TSCH

SCKx Output High Time (Note 3)

TSCK/2

—

—

ns

—

SP20

TSCF

SCKx Output Fall Time (Note 4)

—

—

—

ns

See parameter DO32

SP21

TSCR

SCKx Output Rise Time (Note 4)

—

—

—

ns

See parameter DO31

SP30

TDOF

SDOx Data Output Fall Time
(Note 4)

—

—

—

ns

See parameter DO32

SP31

TDOR

SDOx Data Output Rise Time
(Note 4)

—

—

—

ns

See parameter DO31

SP35

TSCH2DOV, SDOx Data Output Valid after
TSCL2DOV SCKx Edge

—

—

15

ns

VDD > 2.7V

—

—

20

ns

VDD < 2.7V

SP36

TDOV2SC, SDOx Data Output Setup to
TDOV2SCL First SCKx Edge

15

—

—

ns

SP40

TDIV2SCH, Setup Time of SDIx Data Input to
TDIV2SCL SCKx Edge

SP41

TSCH2DIL,
TSCL2DIL

Note 1:
2:
3:
4:

Hold Time of SDIx Data Input
to SCKx Edge

—

15

—

—

ns

VDD > 2.7V

20

—

—

ns

VDD < 2.7V

15

—

—

ns

VDD > 2.7V

20

—

—

ns

VDD < 2.7V

These parameters are characterized, but not tested in manufacturing.
Data in “Typical” column is at 3.3V, 25°C unless otherwise stated. Parameters are for design guidance only
and are not tested.
The minimum clock period for SCKx is 50 ns. Therefore, the clock generated in Master mode must not
violate this specification.
Assumes 50 pF load on all SPIx pins.

 2011-2018 Microchip Technology Inc.

DS60001168K-page 281

PIC32MX1XX/2XX 28/36/44-PIN FAMILY
FIGURE 30-12:

SPIx MODULE SLAVE MODE (CKE = 0) TIMING CHARACTERISTICS

SSX
SP52

SP50
SCKX
(CKP = 0)
SP71

SP70

SP73

SP72

SP72

SP73

SCKX
(CKP = 1)
SP35
MSb

SDOX

LSb

Bit 14 - - - - - -1

SP51

SP30,SP31
SDIX

MSb In
SP40

Bit 14 - - - -1

LSb In

SP41

Note: Refer to Figure 30-1 for load conditions.

TABLE 30-30: SPIx MODULE SLAVE MODE (CKE = 0) TIMING REQUIREMENTS
Standard Operating Conditions: 2.3V to 3.6V
(unless otherwise stated)
Operating temperature -40°C  TA  +85°C for Industrial
-40°C  TA  +105°C for V-temp

AC CHARACTERISTICS

Param.
No.

Symbol

Characteristics(1)

Min.

Typ.(2)

Max.

Units

Conditions

SP70
SP71
SP72
SP73
SP30
SP31
SP35

TSCL
TSCH
TSCF
TSCR
TDOF
TDOR
TSCH2DOV,
TSCL2DOV

SCKx Input Low Time (Note 3)
SCKx Input High Time (Note 3)
SCKx Input Fall Time
SCKx Input Rise Time
SDOx Data Output Fall Time (Note 4)
SDOx Data Output Rise Time (Note 4)
SDOx Data Output Valid after
SCKx Edge

SP40

TDIV2SCH,
TDIV2SCL
TSCH2DIL,
TSCL2DIL

Setup Time of SDIx Data Input
to SCKx Edge
Hold Time of SDIx Data Input
to SCKx Edge

TSCK/2
TSCK/2
—
—
—
—
—
—
10

—
—
—
—
—
—
—
—
—

—
—
—
—
—
—
15
20
—

ns
ns
ns
ns
ns
ns
ns
ns
ns

—
—
See parameter DO32
See parameter DO31
See parameter DO32
See parameter DO31
VDD > 2.7V
VDD < 2.7V
—

10

—

—

ns

—

175

—

—

ns

—

5

—

25

ns

—

SP41
SP50

TSSL2SCH, SSx  to SCKx  or SCKx Input
TSSL2SCL

SP51

TSSH2DOZ SSx  to SDOx Output
High-Impedance (Note 3)

SP52

TSCK + 20
—
—
ns
—
TSCH2SSH SSx after SCKx Edge
TSCL2SSH
These parameters are characterized, but not tested in manufacturing.
Data in “Typical” column is at 3.3V, 25°C unless otherwise stated. Parameters are for design guidance only
and are not tested.
The minimum clock period for SCKx is 50 ns.
Assumes 50 pF load on all SPIx pins.

Note 1:
2:
3:
4:

DS60001168K-page 282

 2011-2018 Microchip Technology Inc.

PIC32MX1XX/2XX 28/36/44-PIN FAMILY
FIGURE 30-13:

SPIx MODULE SLAVE MODE (CKE = 1) TIMING CHARACTERISTICS
SP60

SSx
SP52

SP50
SCKx
(CKP = 0)
SP71

SP70

SP73

SP72

SP72

SP73

SCKx
(CKP = 1)
SP35

MSb

SDOx

Bit 14 - - - - - -1

LSb

SP30,SP31
SDI
SDIx

MSb In
SP40

SP51

Bit 14 - - - -1

LSb In

SP41

Note: Refer to Figure 30-1 for load conditions.

TABLE 30-31: SPIx MODULE SLAVE MODE (CKE = 1) TIMING REQUIREMENTS
Standard Operating Conditions: 2.3V to 3.6V
(unless otherwise stated)
Operating temperature -40°C  TA  +85°C for Industrial
-40°C  TA  +105°C for V-temp

AC CHARACTERISTICS

Param.
No.

Symbol

Characteristics(1)

Min.

Typical(2)

Max.

Units

Conditions

SP70

TSCL

SCKx Input Low Time (Note 3)

TSCK/2

—

—

ns

—

SP71

TSCH

SCKx Input High Time (Note 3)

TSCK/2

—

—

ns

—

SP72

TSCF

SCKx Input Fall Time

—

5

10

ns

—

SP73

TSCR

SCKx Input Rise Time

—

5

10

ns

—

SP30

TDOF

SDOx Data Output Fall Time
(Note 4)

—

—

—

ns

See parameter DO32

SP31

TDOR

SDOx Data Output Rise Time
(Note 4)

—

—

—

ns

See parameter DO31

SP35

TSCH2DOV, SDOx Data Output Valid after
TSCL2DOV SCKx Edge

—

—

20

ns

VDD > 2.7V

—

—

30

ns

VDD < 2.7V

SP40

TDIV2SCH, Setup Time of SDIx Data Input
TDIV2SCL to SCKx Edge

10

—

—

ns

—

SP41

TSCH2DIL, Hold Time of SDIx Data Input
TSCL2DIL to SCKx Edge

10

—

—

ns

—

SP50

TSSL2SCH, SSx  to SCKx  or SCKx  Input
TSSL2SCL

175

—

—

ns

—

Note 1:
2:
3:
4:

These parameters are characterized, but not tested in manufacturing.
Data in “Typical” column is at 3.3V, 25°C unless otherwise stated. Parameters are for design guidance only
and are not tested.
The minimum clock period for SCKx is 50 ns.
Assumes 50 pF load on all SPIx pins.

 2011-2018 Microchip Technology Inc.

DS60001168K-page 283

PIC32MX1XX/2XX 28/36/44-PIN FAMILY
TABLE 30-31: SPIx MODULE SLAVE MODE (CKE = 1) TIMING REQUIREMENTS (CONTINUED)
Standard Operating Conditions: 2.3V to 3.6V
(unless otherwise stated)
Operating temperature -40°C  TA  +85°C for Industrial
-40°C  TA  +105°C for V-temp

AC CHARACTERISTICS

Param.
No.

Symbol

Characteristics(1)

Min.

Typical(2)

Max.

Units

Conditions

SP51

TSSH2DOZ SSx  to SDOX Output
High-Impedance
(Note 4)

5

—

25

ns

—

SP52

TSCH2SSH SSx  after SCKx Edge
TSCL2SSH

TSCK +
20

—

—

ns

—

SP60

TSSL2DOV SDOx Data Output Valid after
SSx Edge

—

—

25

ns

—

Note 1:
2:
3:
4:

These parameters are characterized, but not tested in manufacturing.
Data in “Typical” column is at 3.3V, 25°C unless otherwise stated. Parameters are for design guidance only
and are not tested.
The minimum clock period for SCKx is 50 ns.
Assumes 50 pF load on all SPIx pins.

DS60001168K-page 284

 2011-2018 Microchip Technology Inc.

PIC32MX1XX/2XX 28/36/44-PIN FAMILY
FIGURE 30-14:

I2Cx BUS START/STOP BITS TIMING CHARACTERISTICS (MASTER MODE)

SCLx
IM31

IM34

IM30

IM33

SDAx

Stop
Condition

Start
Condition
Note: Refer to Figure 30-1 for load conditions.

FIGURE 30-15:

I2Cx BUS DATA TIMING CHARACTERISTICS (MASTER MODE)
IM20

IM21

IM11
IM10

SCLx
IM11

IM26

IM10

IM25

IM33

SDAx
In
IM40

IM40

IM45

SDAx
Out
Note: Refer to Figure 30-1 for load conditions.

 2011-2018 Microchip Technology Inc.

DS60001168K-page 285

PIC32MX1XX/2XX 28/36/44-PIN FAMILY
TABLE 30-32: I2Cx BUS DATA TIMING REQUIREMENTS (MASTER MODE)
Standard Operating Conditions: 2.3V to 3.6V
(unless otherwise stated)
Operating temperature -40°C  TA  +85°C for Industrial
-40°C  TA  +105°C for V-temp

AC CHARACTERISTICS

Param.
Symbol
No.
IM10

IM11

IM20

Min.(1)

Max.

Units

Conditions

TLO:SCL Clock Low Time 100 kHz mode

TPB * (BRG + 2)

—

s

—

400 kHz mode

TPB * (BRG + 2)

—

s

—

1 MHz mode
(Note 2)

TPB * (BRG + 2)

—

s

—

Clock High Time 100 kHz mode

TPB * (BRG + 2)

—

s

—

400 kHz mode

TPB * (BRG + 2)

—

s

—

1 MHz mode
(Note 2)

TPB * (BRG + 2)

—

s

—

—

300

ns

20 + 0.1 CB

300

ns

—

100

ns

—

1000

ns

20 + 0.1 CB

300

ns

—

300

ns

100 kHz mode

250

—

ns

400 kHz mode

100

—

ns

1 MHz mode
(Note 2)

100

—

ns

THI:SCL

TF:SCL

Characteristics

SDAx and SCLx 100 kHz mode
Fall Time
400 kHz mode
1 MHz mode
(Note 2)

IM21

TR:SCL

SDAx and SCLx 100 kHz mode
Rise Time
400 kHz mode
1 MHz mode
(Note 2)

IM25

IM26

IM30

IM31

IM33

IM34

TSU:DAT Data Input
Setup Time

THD:DAT Data Input
Hold Time

TSU:STA Start Condition
Setup Time

THD:STA Start Condition
Hold Time

TSU:STO Stop Condition
Setup Time

THD:STO Stop Condition
Hold Time

Note 1:
2:
3:

100 kHz mode

0

—

s

400 kHz mode

0

0.9

s

1 MHz mode
(Note 2)

0

0.3

s

100 kHz mode

TPB * (BRG + 2)

—

s

400 kHz mode

TPB * (BRG + 2)

—

s

1 MHz mode
(Note 2)

TPB * (BRG + 2)

—

s

100 kHz mode

TPB * (BRG + 2)

—

s

400 kHz mode

TPB * (BRG + 2)

—

s

1 MHz mode
(Note 2)

TPB * (BRG + 2)

—

s

100 kHz mode

TPB * (BRG + 2)

—

s

400 kHz mode

TPB * (BRG + 2)

—

s

1 MHz mode
(Note 2)

TPB * (BRG + 2)

—

s

100 kHz mode

TPB * (BRG + 2)

—

ns

400 kHz mode

TPB * (BRG + 2)

—

ns

1 MHz mode
(Note 2)

TPB * (BRG + 2)

—

ns

CB is specified to be
from 10 to 400 pF

CB is specified to be
from 10 to 400 pF

—

—

Only relevant for
Repeated Start
condition
After this period, the
first clock pulse is
generated
—

—

BRG is the value of the I2C Baud Rate Generator.
Maximum pin capacitance = 10 pF for all I2Cx pins (for 1 MHz mode only).
The typical value for this parameter is 104 ns.

DS60001168K-page 286

 2011-2018 Microchip Technology Inc.

PIC32MX1XX/2XX 28/36/44-PIN FAMILY
TABLE 30-32: I2Cx BUS DATA TIMING REQUIREMENTS (MASTER MODE) (CONTINUED)
Standard Operating Conditions: 2.3V to 3.6V
(unless otherwise stated)
Operating temperature -40°C  TA  +85°C for Industrial
-40°C  TA  +105°C for V-temp

AC CHARACTERISTICS

Param.
Symbol
No.
IM40

IM45

Min.(1)

Max.

Units

Conditions

100 kHz mode

—

3500

ns

—

400 kHz mode

—

1000

ns

—

1 MHz mode
(Note 2)

—

350

ns

—
The amount of time the
bus must be free
before a new
transmission can start

Characteristics

TAA:SCL Output Valid
from Clock

TBF:SDA Bus Free Time

100 kHz mode

4.7

—

s

400 kHz mode

1.3

—

s

1 MHz mode
(Note 2)

0.5

—

s

IM50

CB

Bus Capacitive Loading

—

400

pF

—

IM51

TPGD

Pulse Gobbler Delay

52

312

ns

See Note 3

Note 1:
2:
3:

BRG is the value of the I2C Baud Rate Generator.
Maximum pin capacitance = 10 pF for all I2Cx pins (for 1 MHz mode only).
The typical value for this parameter is 104 ns.

 2011-2018 Microchip Technology Inc.

DS60001168K-page 287

PIC32MX1XX/2XX 28/36/44-PIN FAMILY
FIGURE 30-16:

I2Cx BUS START/STOP BITS TIMING CHARACTERISTICS (SLAVE MODE)

SCLx
IS34

IS31
IS30

IS33

SDAx

Stop
Condition

Start
Condition
Note: Refer to Figure 30-1 for load conditions.

FIGURE 30-17:

I2Cx BUS DATA TIMING CHARACTERISTICS (SLAVE MODE)
IS20

IS21

IS11
IS10

SCLx
IS30

IS26

IS31

IS25

IS33

SDAx
In
IS40

IS40

IS45

SDAx
Out
Note: Refer to Figure 30-1 for load conditions.

DS60001168K-page 288

 2011-2018 Microchip Technology Inc.

PIC32MX1XX/2XX 28/36/44-PIN FAMILY
TABLE 30-33: I2Cx BUS DATA TIMING REQUIREMENTS (SLAVE MODE)
Standard Operating Conditions: 2.3V to 3.6V
(unless otherwise stated)
Operating temperature -40°C  TA  +85°C for Industrial
-40°C  TA  +105°C for V-temp

AC CHARACTERISTICS

Param.
No.
IS10

IS11

IS20

Symbol
TLO:SCL

THI:SCL

TF:SCL

Characteristics
Clock Low Time

Clock High Time

SDAx and SCLx
Fall Time

Min.

Max.

Units

100 kHz mode

4.7

—

s

PBCLK must operate at a
minimum of 800 kHz

400 kHz mode

1.3

—

s

PBCLK must operate at a
minimum of 3.2 MHz

1 MHz mode
(Note 1)

0.5

—

s

100 kHz mode

4.0

—

s

PBCLK must operate at a
minimum of 800 kHz

400 kHz mode

0.6

—

s

PBCLK must operate at a
minimum of 3.2 MHz

1 MHz mode
(Note 1)

0.5

—

s

100 kHz mode

—

300

ns

400 kHz mode

20 + 0.1 CB

300

ns

—

100

ns

100 kHz mode

—

1000

ns

400 kHz mode

20 + 0.1 CB

300

ns

—

300

ns

100 kHz mode

250

—

ns

400 kHz mode

100

—

ns

1 MHz mode
(Note 1)

100

—

ns

100 kHz mode

0

—

ns

400 kHz mode

0

0.9

s

1 MHz mode
(Note 1)

0

0.3

s

100 kHz mode

4700

—

ns

400 kHz mode

600

—

ns

1 MHz mode
(Note 1)

250

—

ns

100 kHz mode

4000

—

ns

400 kHz mode

600

—

ns

1 MHz mode
(Note 1)

250

—

ns

100 kHz mode

4000

—

ns

400 kHz mode

600

—

ns

1 MHz mode
(Note 1)

600

—

ns

1 MHz mode
(Note 1)
IS21

TR:SCL

SDAx and SCLx
Rise Time

1 MHz mode
(Note 1)
IS25

IS26

IS30

IS31

IS33

Note 1:

TSU:DAT

THD:DAT

TSU:STA

THD:STA

TSU:STO

Data Input
Setup Time

Data Input
Hold Time

Start Condition
Setup Time

Start Condition
Hold Time

Stop Condition
Setup Time

Conditions

—

—
CB is specified to be from
10 to 400 pF

CB is specified to be from
10 to 400 pF

—

—

Only relevant for Repeated
Start condition

After this period, the first
clock pulse is generated

—

Maximum pin capacitance = 10 pF for all I2Cx pins (for 1 MHz mode only).

 2011-2018 Microchip Technology Inc.

DS60001168K-page 289

PIC32MX1XX/2XX 28/36/44-PIN FAMILY
TABLE 30-33: I2Cx BUS DATA TIMING REQUIREMENTS (SLAVE MODE) (CONTINUED)
Standard Operating Conditions: 2.3V to 3.6V
(unless otherwise stated)
Operating temperature -40°C  TA  +85°C for Industrial
-40°C  TA  +105°C for V-temp

AC CHARACTERISTICS

Param.
No.
IS34

IS40

Symbol
THD:STO

TAA:SCL

Characteristics
Stop Condition
Hold Time

IS50
Note 1:

TBF:SDA

CB

Units

Conditions
—

4000

—

ns

400 kHz mode

600

—

ns

1 MHz mode
(Note 1)

250

Output Valid from 100 kHz mode
Clock
400 kHz mode

Bus Free Time

Max.

100 kHz mode

1 MHz mode
(Note 1)
IS45

Min.

ns

0

3500

ns

0

1000

ns

0

350

ns

100 kHz mode

4.7

—

s

400 kHz mode

1.3

—

s

1 MHz mode
(Note 1)

0.5

—

s

—

400

pF

Bus Capacitive Loading

—

The amount of time the bus
must be free before a new
transmission can start
—

Maximum pin capacitance = 10 pF for all I2Cx pins (for 1 MHz mode only).

DS60001168K-page 290

 2011-2018 Microchip Technology Inc.

PIC32MX1XX/2XX 28/36/44-PIN FAMILY
TABLE 30-34: ADC MODULE SPECIFICATIONS
AC CHARACTERISTICS

Param.
Symbol
No.

Standard Operating Conditions (see Note 5): 2.5V to 3.6V
(unless otherwise stated)
Operating temperature -40°C  TA  +85°C for Industrial
-40°C  TA  +105°C for V-temp

Characteristics

Min.

Typical

Max.

Units

Conditions

—

Device Supply
AD01

AVDD

Module VDD Supply

Greater of
VDD – 0.3
or 2.5

—

Lesser of
VDD + 0.3 or
3.6

V

AD02

AVSS

Module VSS Supply

VSS

—

AVDD

V

(Note 1)

—
—

AVDD
3.6

V
V

(Note 1)
VREFH = AVDD (Note 3)

Reference Inputs
AD05 VREFH
AD05a

Reference Voltage High AVSS + 2.0
2.5

AD06

VREFL

Reference Voltage Low

AVSS

—

VREFH – 2.0

V

(Note 1)

AD07

VREF

Absolute Reference
Voltage (VREFH – VREFL)

2.0

—

AVDD

V

(Note 3)

Current Drain

—
—

250
—

400
3

µA
µA

ADC operating
ADC off

VREFL

—

VREFH

V

—

AD08 IREF
AD08a
Analog Input
AD12

VINH-VINL Full-Scale Input Span

AD13

VINL

Absolute VINL Input
Voltage

AVSS – 0.3

—

AVDD/2

V

—

AD14

VIN

Absolute Input Voltage

AVSS – 0.3

—

AVDD + 0.3

V

—

Leakage Current

—

±0.001

±0.610

µA

VINL = AVSS = VREFL = 0V,
AVDD = VREFH = 3.3V
Source Impedance = 10 k

Recommended
Impedance of Analog
Voltage Source

—

—

5k



(Note 1)

AD15

AD17

—

RIN

ADC Accuracy – Measurements with External VREF+/VREFAD20c Nr

Resolution

AD21c INL

Integral Non-linearity

> -1

—

<1

LSb VINL = AVSS = VREFL = 0V,
AVDD = VREFH = 3.3V

AD22c DNL

Differential Non-linearity

> -1

—

<1

LSb VINL = AVSS = VREFL = 0V,
AVDD = VREFH = 3.3V
(Note 2)

AD23c GERR

Gain Error

> -1

—

<1

LSb VINL = AVSS = VREFL = 0V,
AVDD = VREFH = 3.3V

AD24c EOFF

Offset Error

> -1

—

<1

Lsb VINL = AVSS = 0V,
AVDD = 3.3V

AD25c

Monotonicity

—

—

—

Note 1:
2:
3:
4:
5:

—

10 data bits

bits

—

—

Guaranteed

These parameters are not characterized or tested in manufacturing.
With no missing codes.
These parameters are characterized, but not tested in manufacturing.
Characterized with a 1 kHz sine wave.
The ADC module is functional at VBORMIN < VDD < 2.5V, but with degraded performance. Unless otherwise
stated, module functionality is tested, but not characterized.

 2011-2018 Microchip Technology Inc.

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TABLE 30-34: ADC MODULE SPECIFICATIONS
AC CHARACTERISTICS

Param.
Symbol
No.

Characteristics

Standard Operating Conditions (see Note 5): 2.5V to 3.6V
(unless otherwise stated)
Operating temperature -40°C  TA  +85°C for Industrial
-40°C  TA  +105°C for V-temp
Min.

Typical

Max.

Units

Conditions

ADC Accuracy – Measurements with Internal VREF+/VREFAD20d Nr

Resolution

AD21d INL

Integral Non-linearity

> -1

—

<1

LSb VINL = AVSS = 0V,
AVDD = 2.5V to 3.6V
(Note 3)

AD22d DNL

Differential Non-linearity

> -1

—

<1

LSb VINL = AVSS = 0V,
AVDD = 2.5V to 3.6V
(Notes 2,3)

AD23d GERR

Gain Error

> -4

—

<4

LSb VINL = AVSS = 0V,
AVDD = 2.5V to 3.6V
(Note 3)

AD24d EOFF

Offset Error

> -2

—

<2

Lsb VINL = AVSS = 0V,
AVDD = 2.5V to 3.6V
(Note 3)

AD25d

Monotonicity

—

—

—

—

Guaranteed

—

10 data bits

bits

(Note 3)

Dynamic Performance
AD32b SINAD

Signal to Noise and
Distortion

55

58.5

—

dB

(Notes 3,4)

AD34b ENOB

Effective Number of bits

9.0

9.5

—

bits

(Notes 3,4)

Note 1:
2:
3:
4:
5:

These parameters are not characterized or tested in manufacturing.
With no missing codes.
These parameters are characterized, but not tested in manufacturing.
Characterized with a 1 kHz sine wave.
The ADC module is functional at VBORMIN < VDD < 2.5V, but with degraded performance. Unless otherwise
stated, module functionality is tested, but not characterized.

DS60001168K-page 292

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PIC32MX1XX/2XX 28/36/44-PIN FAMILY
TABLE 30-35: 10-BIT CONVERSION RATE PARAMETERS
Standard Operating Conditions (see Note 3): 2.5V to 3.6V
(unless otherwise stated)
Operating temperature -40°C  TA  +85°C for Industrial
-40°C  TA  +105°C for V-temp

(2)

AC CHARACTERISTICS

ADC Speed

TAD Min.

Sampling
Time Min.

RS Max.

VDD

1 Msps to 400 ksps(1)

65 ns

132 ns

500

3.0V to
3.6V

ADC Channels Configuration

VREF- VREF+

ANx

Up to 400 ksps

200 ns

200 ns

5.0 k

CHX
SHA

ADC

2.5V to
3.6V

VREF- VREF+
or
or
AVSS AVDD

ANx

CHX
SHA

ADC

ANx or VREF-

Note 1:
2:
3:

External VREF- and VREF+ pins must be used for correct operation.
These parameters are characterized, but not tested in manufacturing.
The ADC module is functional at VBORMIN < VDD < 2.5V, but with degraded performance. Unless otherwise
stated, module functionality is tested, but not characterized.

 2011-2018 Microchip Technology Inc.

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TABLE 30-36: ANALOG-TO-DIGITAL CONVERSION TIMING REQUIREMENTS
Standard Operating Conditions (see Note 4): 2.5V to 3.6V
(unless otherwise stated)
Operating temperature -40°C  TA  +85°C for Industrial
-40°C  TA  +105°C for V-temp

AC CHARACTERISTICS

Param.
Symbol
No.

Min.

Typical(1)

Max.

Units

ADC Clock Period(2)

65

—

—

ns

Characteristics

Conditions

Clock Parameters
AD50

TAD

See Table 30-35

Conversion Rate
AD55

TCONV

Conversion Time

—

12 TAD

—

—

AD56

FCNV

Throughput Rate
(Sampling Speed)

—

—

1000

ksps

AVDD = 3.0V to 3.6V

—
AVDD = 2.5V to 3.6V

AD57

TSAMP

Sample Time

—

—

400

ksps

1 TAD

—

—

—

TSAMP must be  132 ns

—

1.0 TAD

—

—

Auto-Convert Trigger
(SSRC<2:0> = 111)
not selected

0.5 TAD

—

1.5 TAD

—

—

Timing Parameters
AD60

TPCS

Conversion Start from Sample
Trigger(3)

AD61

TPSS

Sample Start from Setting
Sample (SAMP) bit

AD62

TCSS

Conversion Completion to
Sample Start (ASAM = 1)(3)

—

0.5 TAD

—

—

—

AD63

TDPU

Time to Stabilize Analog Stage
from ADC Off to ADC On(3)

—

—

2

s

—

Note 1:
2:
3:
4:

These parameters are characterized, but not tested in manufacturing.
Because the sample caps will eventually lose charge, clock rates below 10 kHz can affect linearity
performance, especially at elevated temperatures.
Characterized by design but not tested.
The ADC module is functional at VBORMIN < VDD < 2.5V, but with degraded performance. Unless otherwise
stated, module functionality is tested, but not characterized.

DS60001168K-page 294

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PIC32MX1XX/2XX 28/36/44-PIN FAMILY
FIGURE 30-18:

ANALOG-TO-DIGITAL CONVERSION (10-BIT MODE) TIMING
CHARACTERISTICS (ASAM = 0, SSRC<2:0> = 000)
AD50

ADCLK
Instruction
Execution Set SAMP

Clear SAMP

SAMP
ch0_dischrg
ch0_samp
eoc
AD61

AD60
AD55

TSAMP

AD55

CONV
ADxIF
Buffer(0)
Buffer(1)

1

2

3

4

5

6

7

8

5

6

7

8

1 – Software sets ADxCON. SAMP to start sampling.
2 – Sampling starts after discharge period. TSAMP is described in Section 17. “10-bit Analog-to-Digital Converter (ADC)”
(DS60001104) in the “PIC32 Family Reference Manual”.
3 – Software clears ADxCON. SAMP to start conversion.
4 – Sampling ends, conversion sequence starts.
5 – Convert bit 9.
6 – Convert bit 8.
7 – Convert bit 0.
8 – One TAD for end of conversion.

 2011-2018 Microchip Technology Inc.

DS60001168K-page 295

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FIGURE 30-19:

ANALOG-TO-DIGITAL CONVERSION (10-BIT MODE) TIMING CHARACTERISTICS
(ASAM = 1, SSRC<2:0> = 111, SAMC<4:0> = 00001)
AD50

ADCLK
Instruction
Execution

Set ADON

SAMP
ch0_dischrg
ch0_samp
eoc

TSAMP

AD55

TSAMP

AD55

TCONV

CONV
ADxIF
Buffer(0)
Buffer(1)

1

2

3

4

5

6

7

3

4

5

6

8

3

4

1 – Software sets ADxCON. ADON to start AD operation.

5 – Convert bit 0.

2 – Sampling starts after discharge period.
TSAMP is described in Section 17. “10-bit Analog-to-Digital
Converter (ADC)” (DS60001104).

6 – One TAD for end of conversion.

3 – Convert bit 9.

8 – Sample for time specified by SAMC<4:0>.

7 – Begin conversion of next channel.

4 – Convert bit 8.

DS60001168K-page 296

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PIC32MX1XX/2XX 28/36/44-PIN FAMILY
FIGURE 30-20:

PARALLEL SLAVE PORT TIMING

CS

PS5
RD

PS6
WR

PS4

PS7

PMD<7:0>

PS3

PS1
PS2

 2011-2018 Microchip Technology Inc.

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TABLE 30-37: PARALLEL SLAVE PORT REQUIREMENTS
Standard Operating Conditions: 2.3V to 3.6V
(unless otherwise stated)
Operating temperature -40°C  TA  +85°C for Industrial
-40°C  TA  +105°C for V-temp

AC CHARACTERISTICS

Para
Symbol
m.No.

Characteristics(1)

Min.

Typ.

Max.

Units

Conditions

PS1

TdtV2wr Data In Valid before WR or CS
H
Inactive (setup time)

20

—

—

ns

—

PS2

TwrH2dt WR or CS Inactive to Data-In
I
Invalid (hold time)

40

—

—

ns

—

PS3

TrdL2dt RD and CS Active to Data-Out
V
Valid

—

—

60

ns

—

PS4

TrdH2dtI RD Activeor CS Inactive to
Data-Out Invalid

0

—

10

ns

—

PS5

Tcs

CS Active Time

TPB + 40

—

—

ns

—

PS6

TWR

WR Active Time

TPB + 25

—

—

ns

—

PS7

TRD

RD Active Time

TPB + 25

—

—

ns

—

Note 1:

These parameters are characterized, but not tested in manufacturing.

FIGURE 30-21:

PARALLEL MASTER PORT READ TIMING DIAGRAM
TPB

TPB

TPB

TPB

TPB

TPB

TPB

TPB

PB Clock
PM4
Address

PMA<13:18>

PM6
PMD<7:0>

Data
Data

Address<7:0>
Address<7:0>
PM2
PM3

PM7

PMRD
PM5
PMWR
PM1
PMALL/PMALH

PMCS<2:1>

DS60001168K-page 298

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PIC32MX1XX/2XX 28/36/44-PIN FAMILY
TABLE 30-38: PARALLEL MASTER PORT READ TIMING REQUIREMENTS
Standard Operating Conditions: 2.3V to 3.6V
(unless otherwise stated)
Operating temperature -40°C  TA  +85°C for Industrial
-40°C  TA  +105°C for V-temp

AC CHARACTERISTICS

Param.
Symbol
No.

Characteristics(1)

Min.

Typ.

Max.

Units

Conditions

PM1

TLAT

PMALL/PMALH Pulse Width

—

1 TPB

—

—

—

PM2

TADSU

Address Out Valid to
PMALL/PMALH Invalid (address
setup time)

—

2 TPB

—

—

—

PM3

TADHOLD PMALL/PMALH Invalid to
Address Out Invalid (address
hold time)

—

1 TPB

—

—

—

PM4

TAHOLD

PMRD Inactive to Address Out
Invalid
(address hold time)

5

—

—

ns

—

PM5

TRD

PMRD Pulse Width

—

1 TPB

—

—

—

PM6

TDSU

PMRD or PMENB Active to Data
In Valid (data setup time)

15

—

—

ns

—

PM7

TDHOLD

PMRD or PMENB Inactive to
Data In Invalid (data hold time)

5

—

—

ns

—

Note 1:

These parameters are characterized, but not tested in manufacturing.

FIGURE 30-22:

PARALLEL MASTER PORT WRITE TIMING DIAGRAM
TPB

TPB

TPB

TPB

TPB

TPB

TPB

TPB

PB Clock
Address

PMA<13:18>
PM2 + PM3
PMD<7:0>

Address<7:0>

Data
PM12

PM13

PMRD
PM11
PMWR
PM1
PMALL/PMALH

PMCS<2:1>

 2011-2018 Microchip Technology Inc.

DS60001168K-page 299

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TABLE 30-39: PARALLEL MASTER PORT WRITE TIMING REQUIREMENTS
Standard Operating Conditions: 2.3V to 3.6V
(unless otherwise stated)
Operating temperature -40°C  TA  +85°C for Industrial
-40°C  TA  +105°C for V-temp

AC CHARACTERISTICS

Param.
Symbol
No.

Characteristics(1)

Min.

Typ.

Max.

Units

Conditions

PM11

TWR

PMWR Pulse Width

—

1 TPB

—

—

—

PM12

TDVSU

Data Out Valid before PMWR or
PMENB goes Inactive (data setup
time)

—

2 TPB

—

—

—

PM13

TDVHOLD PMWR or PMEMB Invalid to Data
Out Invalid (data hold time)

—

1 TPB

—

—

—

Note 1:

These parameters are characterized, but not tested in manufacturing.

TABLE 30-40: OTG ELECTRICAL SPECIFICATIONS
Standard Operating Conditions: 2.3V to 3.6V
(unless otherwise stated)
Operating temperature -40°C  TA  +85°C for Industrial
-40°C  TA  +105°C for V-temp

AC CHARACTERISTICS

Param.
Symbol
No.

Characteristics(1)

USB313 VUSB3V3 USB Voltage

Min.

Typ.

Max.

Units

3.0

—

3.6

V

0.8

V

Conditions
Voltage on VUSB3V3
must be in this range
for proper USB
operation

USB315 VILUSB

Input Low Voltage for USB Buffer

—

—

USB316 VIHUSB

Input High Voltage for USB Buffer

2.0

—

—

V

—

USB318 VDIFS

Differential Input Sensitivity

—

—

0.2

V

The difference
between D+ and Dmust exceed this value
while VCM is met

USB319 VCM

Differential Common Mode Range

0.8

—

2.5

V

—

USB320 ZOUT

Driver Output Impedance

28.0

—

44.0



USB321 VOL

Voltage Output Low

0.0

—

0.3

V

1.425 k load
connected to VUSB3V3

USB322 VOH

Voltage Output High

2.8

—

3.6

V

1.425 k load
connected to ground

Note 1:

—

—

These parameters are characterized, but not tested in manufacturing.

DS60001168K-page 300

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PIC32MX1XX/2XX 28/36/44-PIN FAMILY
TABLE 30-41: CTMU CURRENT SOURCE SPECIFICATIONS
DC CHARACTERISTICS

Param
No.

Symbol

Characteristic

Standard Operating Conditions (see Note 3):2.3V to 3.6V
(unless otherwise stated)
Operating temperature -40°C  TA  +85°C for Industrial
-40°C  TA  +105°C for V-temp
Min.

Typ.

Max.

Units

Conditions

CTMU CURRENT SOURCE
CTMUI1

IOUT1

Base Range(1)

—

0.55

—

µA

CTMUCON<9:8> = 01

CTMUI2

IOUT2

10x Range(1)

—

5.5

—

µA

CTMUCON<9:8> = 10

CTMUI3

IOUT3

100x Range(1)

—

55

—

µA

CTMUCON<9:8> = 11

CTMUI4

IOUT4

1000x Range(1)

—

550

—

µA

CTMUCON<9:8> = 00

Temperature Diode Forward
Voltage(1,2)

—

0.598

—

V

TA = +25ºC,
CTMUCON<9:8> = 01

—

0.658

—

V

TA = +25ºC,
CTMUCON<9:8> = 10

—

0.721

—

V

TA = +25ºC,
CTMUCON<9:8> = 11

—

-1.92

—

—

-1.74

—

mV/ºC CTMUCON<9:8> = 10

—

-1.56

—

mV/ºC CTMUCON<9:8> = 11

CTMUFV1 VF

CTMUFV2 VFVR

Note 1:
2:

3:

Temperature Diode Rate of
Change(1,2)

mV/ºC CTMUCON<9:8> = 01

Nominal value at center point of current trim range (CTMUCON<15:10> = 000000).
Parameters are characterized but not tested in manufacturing. Measurements taken with the following
conditions:
• VREF+ = AVDD = 3.3V
• ADC module configured for conversion speed of 500 ksps
• All PMD bits are cleared (PMDx = 0)
• Executing a while(1) statement
• Device operating from the FRC with no PLL
The CTMU module is functional at VBORMIN < VDD < VDDMIN, but with degraded performance. Unless
otherwise stated, module functionality is tested, but not characterized.

 2011-2018 Microchip Technology Inc.

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FIGURE 30-23:

EJTAG TIMING CHARACTERISTICS
TTCKcyc
TTCKhigh

TTCKlow

Trf

TCK
Trf
TMS
TDI
TTsetup TThold

Trf

Trf

TDO
TTRST*low

TTDOout

TTDOzstate

TRST*
Defined

Trf

Undefined

TABLE 30-42: EJTAG TIMING REQUIREMENTS
Standard Operating Conditions: 2.3V to 3.6V
(unless otherwise stated)
Operating temperature -40°C  TA  +85°C for Industrial
-40°C  TA  +105°C for V-temp

AC CHARACTERISTICS

Param.
No.

Symbol

Description(1)

Min.

Max.

Units

Conditions

EJ1

TTCKCYC

TCK Cycle Time

25

—

ns

—

EJ2

TTCKHIGH

TCK High Time

10

—

ns

—

EJ3

TTCKLOW

TCK Low Time

10

—

ns

—

EJ4

TTSETUP

TAP Signals Setup Time Before
Rising TCK

5

—

ns

—

EJ5

TTHOLD

TAP Signals Hold Time After
Rising TCK

3

—

ns

—

EJ6

TTDOOUT

TDO Output Delay Time from
Falling TCK

—

5

ns

—

EJ7

TTDOZSTATE TDO 3-State Delay Time from
Falling TCK

—

5

ns

—

EJ8

TTRSTLOW

TRST Low Time

25

—

ns

—

EJ9

TRF

TAP Signals Rise/Fall Time, All
Input and Output

—

—

ns

—

Note 1:

These parameters are characterized, but not tested in manufacturing.

DS60001168K-page 302

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PIC32MX1XX/2XX 28/36/44-PIN FAMILY
31.0

50 MHz ELECTRICAL CHARACTERISTICS

This section provides an overview of the PIC32MX1XX/2XX 28/36/44-pin Family electrical characteristics for devices
operating at 50 MHz.
The specifications for 50 MHz are identical to those shown in Section 30.0 “Electrical Characteristics”, with the
exception of the parameters listed in this chapter.
Parameters in this chapter begin with the letter “M”, which denotes 50 MHz operation. For example, parameter DC29a
in Section 30.0 “Electrical Characteristics”, is the up to 40 MHz operation equivalent for MDC29a.
Absolute maximum ratings for the PIC32MX1XX/2XX 28/36/44-pin Family 50 MHz devices are listed below. Exposure
to these maximum rating conditions for extended periods may affect device reliability. Functional operation of the device
at these or any other conditions, above the parameters indicated in the operation listings of this specification, is not
implied.

Absolute Maximum Ratings
(See Note 1)
Ambient temperature under bias.............................................................................................................. .-40°C to +85°C
Storage temperature .............................................................................................................................. -65°C to +150°C
Voltage on VDD with respect to VSS ......................................................................................................... -0.3V to +4.0V
Voltage on any pin that is not 5V tolerant, with respect to VSS (Note 3)......................................... -0.3V to (VDD + 0.3V)
Voltage on any 5V tolerant pin with respect to VSS when VDD  2.3V (Note 3)........................................ -0.3V to +5.5V
Voltage on any 5V tolerant pin with respect to VSS when VDD < 2.3V (Note 3)........................................ -0.3V to +3.6V
Voltage on D+ or D- pin with respect to VUSB3V3 .................................................................... -0.3V to (VUSB3V3 + 0.3V)
Voltage on VBUS with respect to VSS ....................................................................................................... -0.3V to +5.5V
Maximum current out of VSS pin(s) .......................................................................................................................300 mA
Maximum current into VDD pin(s) (Note 2)............................................................................................................300 mA
Maximum output current sunk by any I/O pin..........................................................................................................15 mA
Maximum output current sourced by any I/O pin ....................................................................................................15 mA
Maximum current sunk by all ports .......................................................................................................................200 mA
Maximum current sourced by all ports (Note 2)....................................................................................................200 mA
Note 1: Stresses above those listed under “Absolute Maximum Ratings” may cause permanent damage to the
device. This is a stress rating only and functional operation of the device at those or any other conditions,
above those indicated in the operation listings of this specification, is not implied. Exposure to maximum
rating conditions for extended periods may affect device reliability.
2: Maximum allowable current is a function of device maximum power dissipation (see Table 30-2).
3: See the “Pin Diagrams” section for the 5V tolerant pins.

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31.1

DC Characteristics

TABLE 31-1:

OPERATING MIPS VS. VOLTAGE

Characteristic

Temp. Range
(in °C)

PIC32MX1XX/2XX 28/36/44-pin Family

2.3-3.6V

-40°C to +85°C

50 MHz

MDC5
Note 1:

Max. Frequency

VDD Range
(in Volts)(1)

Overall functional device operation at VBORMIN < VDD < VDDMIN is tested, but not characterized. All device
Analog modules, such as ADC, etc., will function, but with degraded performance below VDDMIN. Refer to
parameter BO10 in Table 30-11 for BOR values.

TABLE 31-2:

DC CHARACTERISTICS: OPERATING CURRENT (IDD)
Standard Operating Conditions: 2.3V to 3.6V
(unless otherwise stated)
Operating temperature -40°C  TA  +85°C for Industrial

DC CHARACTERISTICS
Parameter
No.

Typical(3)

Max.

Units

Conditions

mA

50 MHz

Operating Current (IDD) (Note 1, 2)
MDC24
Note 1:

2:

3:
4:

25

37

A device’s IDD supply current is mainly a function of the operating voltage and frequency. Other factors,
such as PBCLK (Peripheral Bus Clock) frequency, number of peripheral modules enabled, internal code
execution pattern, execution from Program Flash memory vs. SRAM, I/O pin loading and switching rate,
oscillator type, as well as temperature, can have an impact on the current consumption.
The test conditions for IDD measurements are as follows:
• Oscillator mode is EC (for 8 MHz and below) and EC+PLL (for above 8 MHz) with OSC1 driven by
external square wave from rail-to-rail, (OSC1 input clock input over/undershoot < 100 mV required)
• OSC2/CLKO is configured as an I/O input pin
• USB PLL oscillator is disabled if the USB module is implemented, PBCLK divisor = 1:8
• CPU, Program Flash, and SRAM data memory are operational, SRAM data memory Wait states = 1
• No peripheral modules are operating, (ON bit = 0), but the associated PMD bit is cleared
• WDT, Clock Switching, Fail-Safe Clock Monitor, and Secondary Oscillator are disabled
• All I/O pins are configured as inputs and pulled to VSS
• MCLR = VDD
• CPU executing while(1) statement from Flash
RTCC and JTAG are disabled
Data in “Typical” column is at 3.3V, 25°C at specified operating frequency unless otherwise stated.
Parameters are for design guidance only and are not tested.

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TABLE 31-3:

DC CHARACTERISTICS: IDLE CURRENT (IIDLE)
Standard Operating Conditions: 2.3V to 3.6V
(unless otherwise stated)
Operating temperature -40°C  TA  +85°C for Industrial

DC CHARACTERISTICS
Parameter
No.

Typical(2)

Max.

Units

Conditions

Idle Current (IIDLE): Core Off, Clock on Base Current (Note 1)
MDC34a
Note 1:

2:

8

13

TABLE 31-4:

50 MHz

DC CHARACTERISTICS: POWER-DOWN CURRENT (IPD)
Standard Operating Conditions: 2.3V to 3.6V (unless otherwise stated)
Operating temperature -40°C  TA  +85°C for Industrial

DC CHARACTERISTICS
Param.
No.

mA

The test conditions for IIDLE current measurements are as follows:
• Oscillator mode is EC (for 8 MHz and below) and EC+PLL (for above 8 MHz) with OSC1 driven by
external square wave from rail-to-rail, (OSC1 input clock input over/undershoot < 100 mV required)
• OSC2/CLKO is configured as an I/O input pin
• USB PLL oscillator is disabled if the USB module is implemented, PBCLK divisor = 1:8
• CPU is in Idle mode (CPU core Halted), and SRAM data memory Wait states = 1
• No peripheral modules are operating, (ON bit = 0), but the associated PMD bit is cleared
• WDT, Clock Switching, Fail-Safe Clock Monitor, and Secondary Oscillator are disabled
• All I/O pins are configured as inputs and pulled to VSS
• MCLR = VDD
• RTCC and JTAG are disabled
Data in the “Typical” column is at 3.3V, 25°C unless otherwise stated. Parameters are for design guidance
only and are not tested.

Typical(2)

Max.

Units

Conditions

Power-Down Current (IPD) (Note 1)
MDC40k

10

25

A

-40°C

MDC40n

250

500

A

+85°C

55

A

3.6V

Watchdog Timer Current: IWDT (Note 3)

Base Power-Down Current

Module Differential Current
MDC41e

10

MDC42e

23

55

A

3.6V

RTCC + Timer1 w/32 kHz Crystal: IRTCC (Note 3)

MDC43d

1100

1300

A

3.6V

ADC: IADC (Notes 3,4)

Note 1:

2:
3:
4:

The test conditions for IPD current measurements are as follows:
• Oscillator mode is EC (for 8 MHz and below) and EC+PLL (for above 8 MHz) with OSC1 driven by
external square wave from rail-to-rail, (OSC1 input clock input over/undershoot < 100 mV required)
• OSC2/CLKO is configured as an I/O input pin
• USB PLL oscillator is disabled if the USB module is implemented, PBCLK divisor = 1:8
• CPU is in Sleep mode, and SRAM data memory Wait states = 1
• No peripheral modules are operating, (ON bit = 0), but the associated PMD bit is set
• WDT, Clock Switching, Fail-Safe Clock Monitor, and Secondary Oscillator are disabled
• All I/O pins are configured as inputs and pulled to VSS
• MCLR = VDD
• RTCC and JTAG are disabled
Data in the “Typical” column is at 3.3V, 25°C unless otherwise stated. Parameters are for design guidance
only and are not tested.
The  current is the additional current consumed when the module is enabled. This current should be
added to the base IPD current.
Test conditions for ADC module differential current are as follows: Internal ADC RC oscillator enabled.

 2011-2018 Microchip Technology Inc.

DS60001168K-page 305

PIC32MX1XX/2XX 28/36/44-PIN FAMILY
TABLE 31-5:

EXTERNAL CLOCK TIMING REQUIREMENTS
Standard Operating Conditions: 2.3V to 3.6V
(unless otherwise stated)
Operating temperature -40°C  TA  +85°C for Industrial

AC CHARACTERISTICS
Param.
Symbol
No.
MOS10 FOSC

Note 1:
2:

Characteristics
External CLKI Frequency
(External clocks allowed only
in EC and ECPLL modes)

Typical

Max.

Units

Conditions

DC
4

—
—

50
50

MHz
MHz

EC (Note 2)
ECPLL (Note 1)

PLL input requirements: 4 MHz  FPLLIN  5 MHz (use PLL prescaler to reduce Fosc). This parameter is
characterized, but tested at 10 MHz only at manufacturing.
This parameter is characterized, but not tested in manufacturing.

TABLE 31-6:

SPIx MASTER MODE (CKE = 0) TIMING REQUIREMENTS
Standard Operating Conditions: 2.3V to 3.6V
(unless otherwise stated)
Operating temperature -40°C  TA  +85°C for Industrial

AC CHARACTERISTICS
Param.
No.

Min.

Symbol

Characteristics

Min.

Typical

Max.

Units

Conditions

MSP10 TSCL

SCKx Output Low Time
(Note 1,2)

TSCK/2

—

—

ns

—

MSP11 TSCH

SCKx Output High Time
(Note 1,2)

TSCK/2

—

—

ns

—

Note 1:
2:

These parameters are characterized, but not tested in manufacturing.
The minimum clock period for SCKx is 40 ns. Therefore, the clock generated in Master mode must not
violate this specification.

TABLE 31-7:

SPIx MODULE MASTER MODE (CKE = 1) TIMING REQUIREMENTS
Standard Operating Conditions: 2.3V to 3.6V
(unless otherwise stated)
Operating temperature -40°C  TA  +85°C for Industrial

AC CHARACTERISTICS
Param.
No.

Symbol

Characteristics(1)

Min.

Typ.

Max.

Units

Conditions

MSP10 TSCL

SCKx Output Low Time
(Note 1,2)

TSCK/2

—

—

ns

—

MSP11 TSCH

SCKx Output High Time
(Note 1,2)

TSCK/2

—

—

ns

—

Note 1:
2:

These parameters are characterized, but not tested in manufacturing.
The minimum clock period for SCKx is 40 ns. Therefore, the clock generated in Master mode must not
violate this specification.

DS60001168K-page 306

 2011-2018 Microchip Technology Inc.

PIC32MX1XX/2XX 28/36/44-PIN FAMILY
TABLE 31-8:

SPIx MODULE SLAVE MODE (CKE = 0) TIMING REQUIREMENTS
Standard Operating Conditions: 2.3V to 3.6V
(unless otherwise stated)
Operating temperature -40°C  TA  +85°C for Industrial
-40°C  TA  +105°C for V-temp

AC CHARACTERISTICS

Param.
No.

Symbol

Min.

Typ.

Max.

Units

Conditions

TSCK/2
TSCK/2

—
—

—
—

ns
ns

—
—

MSP51 TSSH2DOZ SSx  to SDOx Output
5
—
25
High-Impedance (Note 2)
Note 1: These parameters are characterized, but not tested in manufacturing.
2: The minimum clock period for SCKx is 40 ns.

ns

—

MSP70 TSCL
MSP71 TSCH

TABLE 31-9:

Characteristics
SCKx Input Low Time (Note 1,2)
SCKx Input High Time (Note 1,2)

SPIx MODULE SLAVE MODE (CKE = 1) TIMING REQUIREMENTS
Standard Operating Conditions: 2.3V to 3.6V
(unless otherwise stated)
Operating temperature -40°C  TA  +85°C for Industrial

AC CHARACTERISTICS
Param.
No.

Symbol

Characteristics

Min.

Typical

Max.

Units

Conditions

SP70

TSCL

SCKx Input Low Time (Note 1,2)

TSCK/2

—

—

ns

—

SP71

TSCH

SCKx Input High Time (Note 1,2)

TSCK/2

—

—

ns

—

Note 1:
2:

These parameters are characterized, but not tested in manufacturing.
The minimum clock period for SCKx is 40 ns.

 2011-2018 Microchip Technology Inc.

DS60001168K-page 307

PIC32MX1XX/2XX 28/36/44-PIN FAMILY
NOTES:

DS60001168K-page 308

 2011-2018 Microchip Technology Inc.

DC AND AC DEVICE CHARACTERISTICS GRAPHS

Note:

The graphs provided following this note are a statistical summary based on a limited number of samples and are provided for design guidance purposes
only. The performance characteristics listed herein are not tested or guaranteed. In some graphs, the data presented may be outside the specified operating
range (e.g., outside specified power supply range) and therefore, outside the warranted range.

FIGURE 32-1:

I/O OUTPUT VOLTAGE HIGH (VOH)

0.040
IOH(A)

-0.025
-0.020
Absolute Maximum

0.025
0.020
0.015
0.010

-0.005

0.005

0.000

0.000

0.50

1.00

1.50

3V

0.030

-0.010

0.00

3.3V

0.035

3V

-0.030

-0.015

3.6V

0.045
3.3V

-0.035

VOL(V)

0.050

3.6V

-0.040

IOH(A)

I/O OUTPUT VOLTAGE LOW (VOL)

VOH (V)

-0.050
-0.045

FIGURE 32-2:

2.00

2.50

3.00

3.50

4.00

Absolute Maximum

0.00

0.50

1.00

1.50

2.00

2.50

3.00

3.50

4.00

DS60001168K-page 309

PIC32MX1XX/2XX 28/36/44-PIN FAMILY

 2011-2018 Microchip Technology Inc.

32.0

FIGURE 32-5:

TYPICAL IPD CURRENT @ VDD = 3.3V

TYPICAL IIDLE CURRENT @ VDD = 3.3V

8

400
7

350

6
IID
DLE Current (mA)

300

IPD (µA)

250
200
150
100

5
4
3
2

50

1

0
-40

-30

-20

-10

0

10

20

30

40

50

60

70

80

90

100

Temperature (Celsius)

0
0

10

20
MIPS

FIGURE 32-4:

TYPICAL IDD CURRENT @ VDD = 3.3V

25

 2011-2018 Microchip Technology Inc.

IDD (mA)

20

15

10

5

0
0

10

20
MIPS

30

40

30

40

PIC32MX1XX/2XX 28/36/44-PIN FAMILY

DS60001168K-page 310

FIGURE 32-3:

FIGURE 32-8:

TYPICAL FRC FREQUENCY @ VDD = 3.3V

TYPICAL CTMU TEMPERATURE DIODE
FORWARD VOLTAGE

7990

0.850

7980

0.800
0.750

7970
Forward Voltage (V)

FRC Frequency (kHz)

8000

7960
7950
7940
7930

55 µ
A, VF
V

R

= -1.5
6 mV
/ºC

5.5 µ
A, V
FV

VF = 0.658

0.600

VF = 0.598

R

0.55

0.550
0.500
0 500
0.450

7910

0.400

= -1.
74 m
V/ºC
µA,
VFV
R=
-1.9

2m

V/ºC

0.350

-40

-30

-20

-10

0

10

20

30

40

50

60

70

80

90

100

TYPICAL LPRC FREQUENCY @ VDD = 3.3V

FIGURE 32-7:
33

32

31

DS60001168K-page 311

30
-40

-30

-20

-10

0

10

20

30

40

50

Temperature (Celsius)

-40

-30

-20

-10

0

10

20

30

40

50

Temperature (Celsius)

Temperature (Celsius)

LPRC Frequency (kHz)

0.650

7920

7900

VF = 0.721

0.700

60

70

80

90

100

60

70

80

90

100

110

PIC32MX1XX/2XX 28/36/44-PIN FAMILY

 2011-2018 Microchip Technology Inc.

FIGURE 32-6:

PIC32MX1XX/2XX 28/36/44-PIN FAMILY
NOTES:

DS60001168K-page 312

 2011-2018 Microchip Technology Inc.

PIC32MX1XX/2XX 28/36/44-PIN FAMILY
33.0

PACKAGING INFORMATION

33.1

Package Marking Information
28-Lead SOIC

Example

XXXXXXXXXXXXXXXXXXXX
XXXXXXXXXXXXXXXXXXXX
XXXXXXXXXXXXXXXXXXXX
YYWWNNN

28-Lead SPDIP

PIC32MX220F
032B-I/SO e3
1130235

Example
PIC32MX220F
032B-I/SP e3
1130235

XXXXXXXXXXXXXXXXX
XXXXXXXXXXXXXXXXX
YYWWNNN

28-Lead SSOP

Example

XXXXXXXXXXXX
XXXXXXXXXXXX
YYWWNNN

28-Lead QFN

Example

XXXXXXXX
XXXXXXXX
YYWWNNN

Legend: XX...X
Y
YY
WW
NNN

e3

*

Note:

PIC32MX220F
032B-I/SS e3
1130235

32MX220F
032BE/ML e3
1130235

Customer-specific information
Year code (last digit of calendar year)
Year code (last 2 digits of calendar year)
Week code (week of January 1 is week ‘01’)
Alphanumeric traceability code
Pb-free JEDEC designator for Matte Tin (Sn)
This package is Pb-free. The Pb-free JEDEC designator ( e3 )
can be found on the outer packaging for this package.

If the full Microchip part number cannot be marked on one line, it is carried over to the next
line, thus limiting the number of available characters for customer-specific information.

 2011-2018 Microchip Technology Inc.

DS60001168K-page 313

PIC32MX1XX/2XX 28/36/44-PIN FAMILY
33.1

Package Marking Information (Continued)
36-Lead VTLA

XXXXXXXX
XXXXXXXX
YYWWNNN
44-Lead VTLA

XXXXXXXXXX
XXXXXXXXXX
XXXXXXXXXX
YYWWNNN

44-Lead QFN

XXXXXXXXXX
XXXXXXXXXX
XXXXXXXXXX
YYWWNNN
44-Lead TQFP

XXXXXXXXXX
XXXXXXXXXX
XXXXXXXXXX
YYWWNNN

Legend: XX...X
Y
YY
WW
NNN

e3

*

Note:

Example

32MX220F
032CE/TL e3
1130235

Example

PIC32
MX120F0
32DI/TL e3
1130235

Example

32MX220F
032D-E/ML e3
1130235

Example

32MX220F
032D-I/PT
e3
1130235

Customer-specific information
Year code (last digit of calendar year)
Year code (last 2 digits of calendar year)
Week code (week of January 1 is week ‘01’)
Alphanumeric traceability code
Pb-free JEDEC designator for Matte Tin (Sn)
This package is Pb-free. The Pb-free JEDEC designator ( e3 )
can be found on the outer packaging for this package.

If the full Microchip part number cannot be marked on one line, it is carried over to the next
line, thus limiting the number of available characters for customer-specific information.

DS60001168K-page 314

 2011-2018 Microchip Technology Inc.

PIC32MX1XX/2XX 28/36/44-PIN FAMILY
33.2

Package Details

This section provides the technical details of the packages.

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PIC32MX1XX/2XX 28/36/44-PIN FAMILY
Note:

For the most current package drawings, please see the Microchip Packaging Specification located at
http://www.microchip.com/packaging

DS60001168K-page 316

 2011-2018 Microchip Technology Inc.

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DS60001168K-page 317

PIC32MX1XX/2XX 28/36/44-PIN FAMILY
Note:

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http://www.microchip.com/packaging

DS60001168K-page 318

 2011-2018 Microchip Technology Inc.

PIC32MX1XX/2XX 28/36/44-PIN FAMILY
Note:

For the most current package drawings, please see the Microchip Packaging Specification located at
http://www.microchip.com/packaging

 2011-2018 Microchip Technology Inc.

DS60001168K-page 319

PIC32MX1XX/2XX 28/36/44-PIN FAMILY
Note:

For the most current package drawings, please see the Microchip Packaging Specification located at
http://www.microchip.com/packaging

DS60001168K-page 320

 2011-2018 Microchip Technology Inc.

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 2011-2018 Microchip Technology Inc.

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DS60001168K-page 324

 2011-2018 Microchip Technology Inc.

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 2011-2018 Microchip Technology Inc.

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DS60001168K-page 326

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 2011-2018 Microchip Technology Inc.

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Note:

For the most current package drawings, please see the Microchip Packaging Specification located at
http://www.microchip.com/packaging

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APPENDIX A:

REVISION HISTORY

This revision includes the addition of the following
devices:

Revision A (May 2011)

• PIC32MX130F064B

• PIC32MX230F064B

This is the initial released version of this document.

• PIC32MX130F064C

• PIC32MX230F064C

• PIC32MX130F064D

• PIC32MX230F064D

Revision B (October 2011)

• PIC32MX150F128B

• PIC32MX250F128B

The following two global changes are included in this
revision:

• PIC32MX150F128C

• PIC32MX250F128C

• PIC32MX150F128D

• PIC32MX250F128D

• All packaging references to VLAP have been
changed to VTLA throughout the document
• All references to VCORE have been removed
• All occurrences of the ASCL1, ASCL2, ASDA1, and
ASDA2 pins have been removed
• V-temp temperature range (-40ºC to +105ºC) was
added to all electrical specification tables

TABLE A-1:

Text and formatting changes were incorporated
throughout the document.
All other major changes are referenced by their
respective section in Table A-1.

MAJOR SECTION UPDATES
Section

Update Description

“32-bit Microcontrollers (up to 128 KB
Flash and 32 KB SRAM) with Audio
and Graphics Interfaces, USB, and
Advanced Analog”

Split the existing Features table into two: PIC32MX1XX General Purpose
Family Features (Table 1) and PIC32MX2XX USB Family Features (Table 2).
Added the SPDIP package reference (see Table 1, Table 2, and “Pin
Diagrams”).
Added the new devices to the applicable pin diagrams.
Changed PGED2 to PGED1 on pin 35 of the 36-pin VTLA diagram for
PIC32MX220F032C, PIC32MX220F016C, PIC32MX230F064C, and
PIC32MX250F128C devices.

1.0 “Device Overview”

Added the SPDIP package reference and updated the pin number for AN12
for 44-pin QFN devices in the Pinout I/O Descriptions (see Table 1-1).
Added the PGEC4/PGED4 pin pair and updated the C1INA-C1IND and
C2INA-C2IND pin numbers for 28-pin SSOP/SPDIP/SOIC devices in the
Pinout I/O Descriptions (see Table 1-1).

2.0 “Guidelines for Getting Started
with 32-bit Microcontrollers”

 2011-2018 Microchip Technology Inc.

Updated the Recommended Minimum Connection diagram (see Figure 2-1).

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TABLE A-1:

MAJOR SECTION UPDATES (CONTINUED)
Section

4.0 “Memory Organization”

Update Description
Added Memory Maps for the new devices (see Figure 4-3 and Figure 4-4).
Removed the BMXCHEDMA bit from the Bus Matrix Register map (see
Table 4-1).
Added the REFOTRIM register, added the DIVSWEN bit to the REFOCON
registers, added Note 4 to the ULOCK and SOSCEN bits and added the
PBDIVRDY bit in the OSCCON register in the in the System Control Register
map (see Table 4-16).
Removed the ALTI2C1 and ALTI2C2 bits from the DEVCFG3 register and
added Note 1 to the UPLLEN and UPLLIDIV<2:0> bits of the DEVCFG2
register in the Device Configuration Word Summary (see Table 4-17).
Updated Note 1 in the Device and Revision ID Summary (see Table 4-18).
Added Note 2 to the PORTA Register map (see Table 4-19).
Added the ANSB6 and ANSB12 bits to the ANSELB register in the PORTB
Register map (see Table 4-20).
Added Notes 2 and 3 to the PORTC Register map (see Table 4-21).
Updated all register names in the Peripheral Pin Select Register map (see
Table 4-23).
Added values in support of new devices (16 KB RAM and 32 KB RAM) in the
Data RAM Size register (see Register 4-5).
Added values in support of new devices (64 KB Flash and 128 KB Flash) in
the Data RAM Size register (see Register 4-5).

8.0 “Oscillator Configuration”

Added Note 5 to the PIC32MX1XX/2XX Family Clock Diagram (see
Figure 8-1).
Added the PBDIVRDY bit and Note 2 to the Oscillator Control register (see
Register 8-1).
Added the DIVSWEN bit and Note 3 to the Reference Oscillator Control
register (see Register 8-3).
Added the REFOTRIM register (see Register 8-4).

21.0 “10-bit Analog-to-Digital
Converter (ADC)”

Updated the ADC1 Module Block Diagram (see Figure 21-1).

24.0 “Charge Time Measurement
Unit (CTMU)”

Updated the CTMU Block Diagram (see Figure 24-1).

26.0 “Special Features”

Added Note 1 and the PGEC4/PGED4 pin pair to the ICESEL<1:0> bits in
DEVCFG0: Device Configuration Word 0 (see Register 26-1).

Updated the Notes in the ADC Input Select register (see Register 21-4).
Added Note 3 to the CTMU Control register (see Register 24-1)

Removed the ALTI2C1 and ALTI2C2 bits from the Device Configuration
Word 3 register (see Register 26-4).
Removed 26.3.3 “Power-up Requirements”.
Added Note 3 to the Connections for the On-Chip Regulator diagram (see
Figure 26-2).
Updated the Block Diagram of Programming, Debugging and Trace Ports
diagram (see Figure 26-3).

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TABLE A-1:

MAJOR SECTION UPDATES (CONTINUED)
Section

29.0 “Electrical Characteristics”

Update Description
Updated the Absolute Maximum Ratings (removed Voltage on VCORE with
respect to VSS).
Added the SPDIP specification to the Thermal Packaging Characteristics
(see Table 29-2).
Updated the Typical values for parameters DC20-DC24 in the Operating
Current (IDD) specification (see Table 29-5).
Updated the Typical values for parameters DC30a-DC34a in the Idle Current
(IIDLE) specification (see Table 29-6).
Updated the Typical values for parameters DC40i and DC40n and removed
parameter DC40m in the Power-down Current (IPD) specification (see
Table 29-7).
Removed parameter D320 (VCORE) from the Internal Voltage Regulator
Specifications and updated the Comments (see Table 29-13).
Updated the Minimum, Typical, and Maximum values for parameter F20b in
the Internal FRC Accuracy specification (see Table 29-17).
Removed parameter SY01 (TPWRT) and removed all Conditions from Resets
Timing (see Table 29-20).
Updated all parameters in the CTMU Specifications (see Table 29-39).

31.0 “Packaging Information”

Added the 28-lead SPDIP package diagram information (see 31.1 “Package
Marking Information” and 31.2 “Package Details”).

“Product Identification System”

Added the SPDIP (SP) package definition.

Revision C (November 2011)
All major changes are referenced by their respective
section in Table A-2.

TABLE A-2:

MAJOR SECTION UPDATES
Section

“32-bit Microcontrollers (up to 128 KB
Flash and 32 KB SRAM) with Audio
and Graphics Interfaces, USB, and
Advanced Analog”

Update Description
Revised the source/sink on I/O pins (see “Input/Output” on page 1).
Added the SPDIP package to the PIC32MX220F032B device in the
PIC32MX2XX USB Family Features (see Table 2).

4.0 “Memory Organization”

Removed ANSB6 from the ANSELB register and added the ODCB6,
ODCB10, and ODCB11 bits in the PORTB Register Map (see Table 4-20).

29.0 “Electrical Characteristics”

Updated the minimum value for parameter OS50 in the PLL Clock Timing
Specifications (see Table 29-16).

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Revision D (February 2012)
All occurrences of VUSB were changed to: VUSB3V3. In
addition, text and formatting changes were
incorporated throughout the document.
All other major changes are referenced by their
respective section in Table A-3.

TABLE A-3:

MAJOR SECTION UPDATES
Section

Update Description

“32-bit Microcontrollers (up to 128
Corrected a part number error in all pin diagrams.
KB Flash and 32 KB SRAM) with
Updated the DMA Channels (Programmable/Dedicated) column in the
Audio and Graphics Interfaces, USB,
PIC32MX1XX General Purpose Family Features (see Table 1).
and Advanced Analog”
1.0 “Device Overview”

Added the TQFP and VTLA packages to the 44-pin column heading and
updated the pin numbers for the SCL1, SCL2, SDA1, and SDA2 pins in the
Pinout I/O Descriptions (see Table 1-1).

7.0 “Interrupt Controller”

Updated the Note that follows the features.
Updated the Interrupt Controller Block Diagram (see Figure 7-1).

29.0 “Electrical Characteristics”

Updated the Maximum values for parameters DC20-DC24, and the Minimum
value for parameter DC21 in the Operating Current (IDD) DC Characteristics
(see Table 29-5).
Updated all Minimum and Maximum values for the Idle Current (IIDLE) DC
Characteristics (see Table 29-6).
Updated the Maximum values for parameters DC40k, DC40l, DC40n, and
DC40m in the Power-down Current (IPD) DC Characteristics (see Table 29-7).
Changed the minimum clock period for SCKx from 40 ns to 50 ns in Note 3 of
the SPIx Master and Slave Mode Timing Requirements (see Table 29-26
through Table 29-29).

30.0 “DC and AC Device
Characteristics Graphs”

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Updated the Typical IIDLE Current @ VDD = 3.3V graph (see Figure 30-5).

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Revision E (October 2012)
All singular pin diagram occurrences of CVREF were
changed to: CVREFOUT. In addition, minor text and formatting changes were incorporated throughout the
document.
All major changes are referenced by their respective
section in Table A-4.

TABLE A-4:

MAJOR SECTION UPDATES
Section

Update Description

“32-bit Microcontrollers (up to
128 KB Flash and 32 KB SRAM)
with Audio and Graphics
Interfaces, USB, and Advanced
Analog”

Updated the following feature sections:

2.0 “Guidelines for Getting
Started with 32-bit MCUs”

Removed Section 2.8 “Configuration of Analog and Digital Pins During ICSP
Operations”.

3.0 “CPU”

Removed references to GPR shadow registers in 3.1 “Features” and
3.2.1 “Execution Unit”.

4.0 “Memory Organization”

Updated the BRG bit range in the SPI1 and SPI2 Register Map (see Table 4-8).

• “Operating Conditions”
• “Communication Interfaces”

Added the PWP<6> bit to the Device Configuration Word Summary
(see Table 4-17).
5.0 “Flash Program Memory”

Added a note with Flash page size and row size information.

7.0 “Interrupt Controller”

Updated the TPC<2:0> bit definitions (see Register 7-1).
Updated the IPTMR<31:0> bit definition (see Register 7-3).

8.0 “Oscillator Configuration”

Updated the PIC32MX1XX/2XX Family Clock Diagram (see Figure 8-1).
Updated the RODIV<14:0> bit definitions (see Register 8-3).

10.0 “USB On-The-Go (OTG)”

Updated the Notes in the USB Interface Diagram (see Figure 10-1).

18.0 “Universal Asynchronous
Receiver Transmitter (UART)”

Updated the baud rate range in the list of primary features.

26.0 “Special Features”

Added the PWP<6> bit to the Device Configuration Word 0
(see Register 26-1).

29.0 “Electrical Characteristics”

Added Note 1 to Operating MIPS vs. Voltage (see Table 29-1).
Added Note 2 to DC Temperature and Voltage Specifications (see Table 29-4).
Updated the Conditions for parameter DC25 in DC Characteristics: Operating
Current (IDD) (see Table 29-5).
Added Note 2 to Electrical Characteristics: BOR (see Table 29-10).
Added Note 4 to Comparator Specifications (see Table 29-12).
Added Note 5 to ADC Module Specifications (see Table 29-32).
Updated the 10-bit Conversion Rate Parameters and added Note 3 (see
Table 29-33).
Added Note 4 to the Analog-to-Digital Conversion Timing Requirements (see
Table 29-34).
Added Note 3 to CTMU Current Source Specifications (see Table 29-39).

30.0 “50 MHz Electrical
Characteristics”

New chapter with electrical characteristics for 50 MHz devices.

31.0 “Packaging Information”

The 36-pin and 44-pin VTLA packages have been updated.

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Revision F (February 2014)
This revision includes the addition of the following
devices:
• PIC32MX170F256B

• PIC32MX270F256B

• PIC32MX170F256D

• PIC32MX270F256D

TABLE A-5:

In addition, this revision includes the following major
changes as described in Table A-5, as well as minor
updates to text and formatting, which were
incorporated throughout the document.

MAJOR SECTION UPDATES
Section

Update Description

32-bit Microcontrollers (up to 256 Added new devices to the family features (see Table 1 and Table 2).
KB Flash and 64 KB SRAM) with Updated pin diagrams to include new devices (see “Pin Diagrams”).
Audio and Graphics Interfaces,
USB, and Advanced Analog
1.0 “Device Overview”

Added Note 3 reference to the following pin names: VBUS, VUSB3V3, VBUSON,
D+, D-, and USBID.

2.0 “Guidelines for Getting
Started with 32-bit MCUs”

Replaced Figure 2-1: Recommended Minimum Connection.
Updated Figure 2-2: MCLR Pin Connections.
Added 2.9 “SOSC Design Recommendation”.

4.0 “Memory Organization”

Added memory tables for devices with 64 KB RAM (see Table 4-4 through
Table 4-5).
Changed the Virtual Addresses for all registers and updated the PWP bits in
the DEVCFG: Device Configuration Word Summary (see Table 4-17).
Updated the ODCA, ODCB, and ODCC port registers (see Table 4-19, Table 420, and Table 4-21).
The RTCTIME, RTCDATE, ALRMTIME, and ALRMDATE registers were
updated (see Table 4-25).
Added Data Ram Size value for 64 KB RAM devices (see Register 4-5).
Added Program Flash Size value for 256 KB Flash devices (see Register 4-5).

12.0 “Timer1”

The Timer1 block diagram was updated to include the 16-bit data bus (see
Figure 12-1).

13.0 “Timer2/3, Timer4/5”

The Timer2-Timer5 block diagram (16-bit) was updated to include the 16-bit
data bus (see Figure 13-1).
The Timer2/3, Timer4/5 block diagram (32-bit) was updated to include the 32bit data bus (see Figure 13-1).

19.0 “Parallel Master Port (PMP)” The CSF<1:0> bit value definitions for ‘00’ and ‘01’ were updated (see
Register 19-1).
Bit 14 in the Parallel Port Address register (PMADDR) was updated (see
Register 19-3).
20.0 “Real-Time Clock and
Calendar (RTCC)”

The following registers were updated:
RTCTIME (see Register 20-3)
RTCDATE (see Register 20-4)
ALRMTIME (see Register 20-5)
ALRMDATE (see Register 20-6)

26.0 “Special Features”

Updated the PWP bits (see Register 26-1).

29.0 “Electrical Characteristics”

Added parameters DO50 and DO50a to the Capacitive Loading Requirements
on Output Pins (see Table 29-14).
Added Note 5 to the IDD DC Characteristics (see Table 29-5).
Added Note 4 to the IIDLE DC Characteristics (see Table 29-6).
Added Note 5 to the IPD DC Characteristics (see Table 29-7).
Updated the conditions for parameters USB321 (VOL) and USB322 (VOH) in the
OTG Electrical Specifications (see Table 29-38).

Product Identification System

Added 40 MHz speed information.

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Revision G (April 2015)
This revision includes the addition of the following
devices:
• PIC32MX130F256B

• PIC32MX230F256B

• PIC32MX130F256D

• PIC32MX230F256D

The title of the document was updated to avoid
confusion with the PIC32MX1XX/2XX/5XX 64/100-pin
Family data sheet.

TABLE A-6:

All peripheral SFR maps have been relocated from the
Memory chapter to their respective peripheral
chapters.
In addition, this revision includes the following major
changes as described in Table A-6, as well as minor
updates to text and formatting, which were
incorporated throughout the document.

MAJOR SECTION UPDATES
Section

Update Description

32-bit Microcontrollers (up to 256 Added new devices to the family features (see Table 1 and Table 2).
KB Flash and 64 KB SRAM) with
Updated pin diagrams to include new devices (see Pin Diagrams).
Audio and Graphics Interfaces,
USB, and Advanced Analog
2.0 “Guidelines for Getting
Started with 32-bit MCUs”

Updated these sections: 2.2 “Decoupling Capacitors”, 2.3 “Capacitor on
Internal Voltage Regulator (VCAP)”, 2.4 “Master Clear (MCLR) Pin”,
2.8.1 “Crystal Oscillator Design Consideration”

4.0 “Memory Organization”

Added Memory Map for new devices (see Figure 4-6).

14.0 “Watchdog Timer (WDT)”

New chapter created from content previously located in the Special Features
chapter.

30.0 “Electrical Characteristics”

Removed parameter D312 (TSET) from the Comparator Specifications (see
Table 30-12).
Added the Comparator Voltage Reference Specifications (see Table 30-13).
Updated Table 30-12.

Revision H (July 2015)
This revision includes the following major changes as
described in Table A-7, as well as minor updates to text
and formatting, which were incorporated throughout
the document.

TABLE A-7:

MAJOR SECTION UPDATES
Section

Update Description

2.0 “Guidelines for Getting
Started with 32-bit MCUs”

Section 2.9 “Sosc Design Recommendation” was removed.

8.0 “Oscillator Configuration”

The Primary Oscillator (POSC) logic in the Oscillator diagram was updated (see
Figure 8-1).

30.0 “Electrical Characteristics”

The Power-Down Current (IPD) DC Characteristics parameter DC40k was
updated (see Table 30-7).
Table 30-9: “DC Characteristics: I/O Pin Input Injection current
Specifications” was added.

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Revision J (April 2016)
This revision includes the following major changes as
described in Table A-8, as well as minor updates to text
and formatting, which were incorporated throughout
the document.

TABLE A-8:

MAJOR SECTION UPDATES

Section

Update Description

“32-bit Microcontrollers (up to The PIC32MX270FDB device and Note 4 were added to TABLE 2: “PIC32MX2XX
256 KB Flash and 64 KB
28/36/44-pin USB Family Features”.
SRAM) with Audio and
Graphics Interfaces, USB, and
Advanced Analog”
2.0 “Guidelines for Getting
Started with 32-bit MCUs”

EXAMPLE 2-1: “Crystal Load Capacitor Calculation” was updated.

30.0 “Electrical
Characteristics”

Parameter DO50a (CSOSC) was removed from the Capacitive Loading
Requirements on Output Pins AC Characteristics (see Table 30-16).

“Product Identification
System”

The device mapping was updated to include type B for Software Targeting.

Revision K (May 2018)
This revision includes the following major changes as
described in Table A-9, as well as minor updates to text
and formatting, which were incorporated throughout
the document.

TABLE A-9:

MAJOR SECTION UPDATES

Section

Update Description

“32-bit Microcontrollers (up to The PIC32MX270F256DB device and Note 4 were removed from the
256 KB Flash and 64 KB
PIC32MX2XX 28/36/44-Pin USB Family Features (see Table 2).
SRAM) with Audio and
Graphics Interfaces, USB, and
Advanced Analog”
“Product Identification
System”

Type B for Software Targeting was removed.

Section 2.10 “Considerations A new section has been added.
When Interfacing To Remotely
Powered Circuits”

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INDEX
Numerics
50 MHz Electrical Characteristics ..................................... 303

A
AC Characteristics ............................................................ 271
10-Bit Conversion Rate Parameters ......................... 293
ADC Specifications ................................................... 291
Analog-to-Digital Conversion Requirements............. 294
EJTAG Timing Requirements ................................... 302
Internal FRC Accuracy.............................................. 273
Internal RC Accuracy ................................................ 273
OTG Electrical Specifications ................................... 300
Parallel Master Port Read Requirements ................. 299
Parallel Master Port Write ......................................... 300
Parallel Master Port Write Requirements.................. 300
Parallel Slave Port Requirements ............................. 298
PLL Clock Timing...................................................... 273
Analog-to-Digital Converter (ADC).................................... 211
Assembler
MPASM Assembler................................................... 256

B
Block Diagrams
ADC Module.............................................................. 211
Comparator I/O Operating Modes............................. 221
Comparator Voltage Reference ................................ 225
Connections for On-Chip Voltage Regulator............. 252
Core and Peripheral Modules ..................................... 19
CPU ............................................................................ 35
CTMU Configurations
Time Measurement ........................................... 229
DMA ............................................................................ 85
I2C Circuit ................................................................. 176
Input Capture ............................................................ 159
Interrupt Controller ...................................................... 65
JTAG Programming, Debugging and Trace Ports .... 252
Output Compare Module........................................... 163
PMP Pinout and Connections to External Devices ... 191
Reset System.............................................................. 61
RTCC ........................................................................ 201
SPI Module ............................................................... 167
Timer1....................................................................... 145
Timer2/3/4/5 (16-Bit) ................................................. 149
Typical Multiplexed Port Structure ............................ 129
UART ........................................................................ 183
WDT and Power-up Timer ........................................ 155
Brown-out Reset (BOR)
and On-Chip Voltage Regulator................................ 252

C
C Compilers
MPLAB C18 .............................................................. 256
Charge Time Measurement Unit. See CTMU.
Clock Diagram .................................................................... 76
Comparator
Specifications.................................................... 269, 270
Comparator Module .......................................................... 221
Comparator Voltage Reference (CVref ............................. 225
Configuration Bit ............................................................... 241
Configuring Analog Port Pins ............................................ 130
CPU
Architecture Overview................................................. 36
Coprocessor 0 Registers ............................................ 37

 2011-2018 Microchip Technology Inc.

Core Exception Types ................................................ 38
EJTAG Debug Support............................................... 38
Power Management ................................................... 38
CPU Module ................................................................. 27, 35
Customer Change Notification Service............................. 343
Customer Notification Service .......................................... 343
Customer Support............................................................. 343

D
DC and AC Characteristics
Graphs and Tables ................................................... 309
DC Characteristics............................................................ 260
I/O Pin Input Specifications .............................. 265, 266
I/O Pin Output Specifications.................................... 267
Idle Current (IIDLE) .................................................... 263
Power-Down Current (IPD)........................................ 264
Program Memory...................................................... 268
Temperature and Voltage Specifications.................. 261
DC Characteristics (50 MHz) ............................................ 304
Idle Current (IIDLE) .................................................... 305
Power-Down Current (IPD)........................................ 305
Development Support ....................................................... 255
Direct Memory Access (DMA) Controller............................ 85

E
Electrical Characteristics .................................................. 259
AC............................................................................. 271
Errata .................................................................................. 17
External Clock
Timer1 Timing Requirements ................................... 277
Timer2, 3, 4, 5 Timing Requirements ....................... 278
Timing Requirements ............................................... 272
External Clock (50 MHz)
Timing Requirements ............................................... 306

F
Flash Program Memory ...................................................... 55
RTSP Operation ......................................................... 55

I
I/O Ports ........................................................................... 129
Parallel I/O (PIO) ...................................................... 130
Write/Read Timing.................................................... 130
Input Change Notification ................................................. 130
Instruction Set................................................................... 253
Inter-Integrated Circuit (I2C .............................................. 175
Internal Voltage Reference Specifications........................ 270
Internet Address ............................................................... 343
Interrupt Controller.............................................................. 65
IRG, Vector and Bit Location ...................................... 66

M
Memory Maps
PIC32MX110/210 Devices
(4 KB RAM, 16 KB Flash)................................... 40
PIC32MX120/220 Devices
(8 KB RAM, 32 KB Flash)................................... 41
PIC32MX130/230
(16 KB RAM, 256 KB Flash)............................... 45
PIC32MX130/230 Devices
(16 KB RAM, 64 KB Flash)................................. 42
PIC32MX150/250 Devices
(32 KB RAM, 128 KB Flash)............................... 43
PIC32MX170/270

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(64 KB RAM, 256 KB Flash) ............................... 44
Memory Organization.......................................................... 39
Microchip Internet Web Site .............................................. 343
MPLAB ASM30 Assembler, Linker, Librarian ................... 256
MPLAB Integrated Development Environment Software .. 255
MPLAB PM3 Device Programmer..................................... 257
MPLAB REAL ICE In-Circuit Emulator System ................. 257
MPLINK Object Linker/MPLIB Object Librarian ................ 256

O
Oscillator Configuration....................................................... 75
Output Compare................................................................ 163

P
Packaging ......................................................................... 313
Details ....................................................................... 315
Marking ..................................................................... 313
Parallel Master Port (PMP) ............................................... 191
PIC32 Family USB Interface Diagram............................... 106
Pinout I/O Descriptions (table) ............................................ 20
Power-on Reset (POR)
and On-Chip Voltage Regulator ................................ 252
Power-Saving Features..................................................... 235
CPU Halted Methods ................................................ 235
Operation .................................................................. 235
with CPU Running..................................................... 235

R
Real-Time Clock and Calendar (RTCC)............................ 201
Register Maps ............................................................... 47–??
Registers
[pin name]R (Peripheral Pin Select Input)................. 143
AD1CHS (ADC Input Select) .................................... 219
AD1CON1 (ADC Control 1) ...................................... 215
AD1CON2 (ADC Control 2) ...................................... 217
AD1CON3 (ADC Control 3) ...................................... 218
AD1CSSL (ADC Input Scan Select) ......................... 220
ALRMDATE (Alarm Date Value) ............................... 210
ALRMTIME (Alarm Time Value) ............................... 209
BMXBOOTSZ (Boot Flash (IFM) Size ........................ 53
BMXCON (Bus Matrix Configuration) ......................... 48
BMXDKPBA (Data RAM Kernel Program
Base Address) .................................................... 49
BMXDRMSZ (Data RAM Size Register) ..................... 52
BMXDUDBA (Data RAM User Data Base Address) ... 50
BMXDUPBA (Data RAM User Program
Base Address) .................................................... 51
BMXPFMSZ (Program Flash (PFM) Size) .................. 53
BMXPUPBA (Program Flash (PFM) User Program
Base Address) .................................................... 52
CFGCON (Configuration Control) ............................. 250
CM1CON (Comparator 1 Control) ............................ 223
CMSTAT (Comparator Status Register) ................... 224
CNCONx (Change Notice Control for PORTx) ......... 144
CTMUCON (CTMU Control) ..................................... 231
CVRCON (Comparator Voltage Reference Control). 227
DCHxCON (DMA Channel ’x’ Control)........................ 95
DCHxCPTR (DMA Channel ’x’ Cell Pointer) ............. 102
DCHxCSIZ (DMA Channel ’x’ Cell-Size)................... 102
DCHxDAT (DMA Channel ’x’ Pattern Data) .............. 103
DCHxDPTR (Channel ’x’ Destination Pointer) .......... 101
DCHxDSA (DMA Channel ’x’ Destination
Start Address) ..................................................... 99
DCHxDSIZ (DMA Channel ’x’ Destination Size) ....... 100
DCHxECON (DMA Channel ’x’ Event Control) ........... 96
DCHxINT (DMA Channel ’x’ Interrupt Control)............ 97

DS60001168K-page 340

DCHxSPTR (DMA Channel ’x’ Source Pointer)........ 101
DCHxSSA (DMA Channel ’x’ Source Start Address).. 99
DCHxSSIZ (DMA Channel ’x’ Source Size).............. 100
DCRCCON (DMA CRC Control)................................. 92
DCRCDATA (DMA CRC Data) ................................... 94
DCRCXOR (DMA CRCXOR Enable) ......................... 94
DEVCFG0 (Device Configuration Word 0) ............... 243
DEVCFG1 (Device Configuration Word 1) ............... 245
DEVCFG2 (Device Configuration Word 2) ............... 247
DEVCFG3 (Device Configuration Word 3) ............... 249
DEVID (Device and Revision ID) .............................. 251
DMAADDR (DMA Address) ........................................ 91
DMACON (DMA Controller Control) ........................... 90
DMASTAT (DMA Status) ............................................ 91
I2CxCON (I2C Control)............................................. 178
I2CxSTAT (I2C Status) ............................................. 180
ICxCON (Input Capture ’x’ Control) .......................... 161
IECx (Interrupt Enable Control) .................................. 72
IFSx (Interrupt Flag Status) ........................................ 72
INTCON (Interrupt Control)......................................... 70
INTSTAT (Interrupt Status)......................................... 71
IPCx (Interrupt Priority Control) .................................. 73
IPTMR (Interrupt Proximity Timer).............................. 71
NVMADDR (Flash Address) ....................................... 58
NVMCON (Programming Control) .............................. 57
NVMDATA (Flash Program Data)............................... 59
NVMKEY (Programming Unlock)................................ 58
NVMSRCADDR (Source Data Address) .................... 59
OCxCON (Output Compare ’x’ Control).................... 165
OSCCON (Oscillator Control) ..................................... 78
OSCTUN (FRC Tuning).............................................. 81
PMADDR (Parallel Port Address) ............................. 197
PMAEN (Parallel Port Pin Enable)............................ 198
PMCON (Parallel Port Control)................................. 193
PMMODE (Parallel Port Mode)................................. 195
PMSTAT (Parallel Port Status (Slave Modes Only).. 199
REFOCON (Reference Oscillator Control) ................. 82
REFOTRIM (Reference Oscillator Trim)..................... 84
RPnR (Peripheral Pin Select Output) ....................... 143
RSWRST (Software Reset) ........................................ 64
RTCALRM (RTC Alarm Control)............................... 205
RTCCON (RTC Control) ........................................... 203
RTCDATE (RTC Date Value) ................................... 208
RTCTIME (RTC Time Value).................................... 207
SPIxCON (SPI Control) ............................................ 169
SPIxCON2 (SPI Control 2) ....................................... 172
SPIxSTAT (SPI Status)............................................. 173
T1CON (Type A Timer Control) ................................ 147
TxCON (Type B Timer Control) ................................ 152
U1ADDR (USB Address) .......................................... 123
U1BDTP1 (USB BDT Page 1) .................................. 125
U1BDTP2 (USB BDT Page 2) .................................. 126
U1BDTP3 (USB BDT Page 3) .................................. 126
U1CNFG1 (USB Configuration 1)............................. 127
U1CON (USB Control).............................................. 121
U1EIE (USB Error Interrupt Enable) ......................... 119
U1EIR (USB Error Interrupt Status).......................... 117
U1EP0-U1EP15 (USB Endpoint Control) ................. 128
U1FRMH (USB Frame Number High) ...................... 124
U1FRML (USB Frame Number Low)........................ 123
U1IE (USB Interrupt Enable) .................................... 116
U1IR (USB Interrupt) ................................................ 115
U1OTGCON (USB OTG Control) ............................. 113
U1OTGIE (USB OTG Interrupt Enable).................... 111
U1OTGIR (USB OTG Interrupt Status)..................... 110

 2011-2018 Microchip Technology Inc.

PIC32MX1XX/2XX 28/36/44-PIN FAMILY
U1OTGSTAT (USB OTG Status).............................. 112
U1PWRC (USB Power Control)................................ 114
U1SOF (USB SOF Threshold).................................. 125
U1STAT (USB Status) .............................................. 120
U1TOK (USB Token) ................................................ 124
UxMODE (UARTx Mode).......................................... 185
UxSTA (UARTx Status and Control)......................... 187
WDTCON (Watchdog Timer Control) ....................... 157
Resets ................................................................................. 61
Revision History ................................................................ 331
RTCALRM (RTC ALARM Control) .................................... 205

S
Serial Peripheral Interface (SPI) ....................................... 167
Software Simulator (MPLAB SIM)..................................... 257
Special Features ............................................................... 241

T
Timer1 Module .................................................................. 145
Timer2/3, Timer4/5 Modules ............................................. 149
Timing Diagrams
10-Bit Analog-to-Digital Conversion
(ASAM = 0, SSRC<2:0> = 000) ........................ 295
10-Bit Analog-to-Digital Conversion (ASAM = 1,
SSRC<2:0> = 111, SAMC<4:0> = 00001)........ 296
EJTAG ...................................................................... 302
External Clock........................................................... 271
I/O Characteristics .................................................... 274
I2Cx Bus Data (Master Mode) .................................. 285
I2Cx Bus Data (Slave Mode) .................................... 288
I2Cx Bus Start/Stop Bits (Master Mode) ................... 285
I2Cx Bus Start/Stop Bits (Slave Mode) ..................... 288
Input Capture (CAPx)................................................ 278
OCx/PWM ................................................................. 279
Output Compare (OCx)............................................. 279
Parallel Master Port Read......................................... 298
Parallel Master Port Write ......................................... 299

 2011-2018 Microchip Technology Inc.

Parallel Slave Port .................................................... 297
SPIx Master Mode (CKE = 0) ................................... 280
SPIx Master Mode (CKE = 1) ................................... 281
SPIx Slave Mode (CKE = 0) ..................................... 282
SPIx Slave Mode (CKE = 1) ..................................... 283
Timer1, 2, 3, 4, 5 External Clock .............................. 277
UART Reception....................................................... 189
UART Transmission (8-bit or 9-bit Data) .................. 189
Timing Requirements
CLKO and I/O ........................................................... 274
Timing Specifications
I2Cx Bus Data Requirements (Master Mode)........... 286
I2Cx Bus Data Requirements (Slave Mode)............. 289
Input Capture Requirements .................................... 278
Output Compare Requirements................................ 279
Simple OCx/PWM Mode Requirements ................... 279
SPIx Master Mode (CKE = 0) Requirements............ 280
SPIx Master Mode (CKE = 1) Requirements............ 281
SPIx Slave Mode (CKE = 1) Requirements.............. 283
SPIx Slave Mode Requirements (CKE = 0).............. 282
Timing Specifications (50 MHz)
SPIx Master Mode (CKE = 0) Requirements............ 306
SPIx Master Mode (CKE = 1) Requirements............ 306
SPIx Slave Mode (CKE = 1) Requirements.............. 307
SPIx Slave Mode Requirements (CKE = 0).............. 307

U
UART ................................................................................ 183
USB On-The-Go (OTG) .................................................... 105

V
VCAP pin............................................................................ 252
Voltage Regulator (On-Chip) ............................................ 252

W
WWW Address ................................................................. 343
WWW, On-Line Support ..................................................... 17

DS60001168K-page 341

PIC32MX1XX/2XX 28/36/44-PIN FAMILY
NOTES:

DS60001168K-page 342

 2011-2018 Microchip Technology Inc.

PIC32MX1XX/2XX 28/36/44-PIN FAMILY
THE MICROCHIP WEB SITE

CUSTOMER SUPPORT

Microchip provides online support via our WWW site at
www.microchip.com. This web site is used as a means
to make files and information easily available to
customers. Accessible by using your favorite Internet
browser, the web site contains the following
information:

Users of Microchip products can receive assistance
through several channels:

• Product Support – Data sheets and errata,
application notes and sample programs, design
resources, user’s guides and hardware support
documents, latest software releases and archived
software
• General Technical Support – Frequently Asked
Questions (FAQ), technical support requests,
online discussion groups, Microchip consultant
program member listing
• Business of Microchip – Product selector and
ordering guides, latest Microchip press releases,
listing of seminars and events, listings of
Microchip sales offices, distributors and factory
representatives

•
•
•
•

Distributor or Representative
Local Sales Office
Field Application Engineer (FAE)
Technical Support

Customers
should
contact
their
distributor,
representative or Field Application Engineer (FAE) for
support. Local sales offices are also available to help
customers. A listing of sales offices and locations is
included in the back of this document.
Technical support is available through the web site
at: http://microchip.com/support

CUSTOMER CHANGE NOTIFICATION
SERVICE
Microchip’s customer notification service helps keep
customers current on Microchip products. Subscribers
will receive e-mail notification whenever there are
changes, updates, revisions or errata related to a
specified product family or development tool of interest.
To register, access the Microchip web site at
www.microchip.com. Under “Support”, click on
“Customer Change Notification” and follow the
registration instructions.

 2011-2018 Microchip Technology Inc.

DS60001168K-page 343

PIC32MX1XX/2XX 28/36/44-PIN FAMILY
PRODUCT IDENTIFICATION SYSTEM
To order or obtain information, e.g., on pricing or delivery, refer to the factory or the listed sales office.
PIC32 MX 1XX F 032 D T - 50 I / PT - XXX

Example:
PIC32MX110F032DT-I/PT:
General purpose PIC32,
32-bit RISC MCU with M4K® core,
32 KB program memory, 44-pin,
Industrial temperature,
TQFP package.

Microchip Brand
Architecture
Product Groups
Flash Memory Family
Program Memory Size (KB)
Pin Count
Tape and Reel Flag (if applicable)
Speed (if applicable)
Temperature Range
Package
Pattern

Flash Memory Family
Architecture

MX = M4K® MCU core

Product Groups

1XX = General purpose microcontroller family
2XX = General purpose microcontroller family

Flash Memory Family

F

= Flash program memory

Program Memory Size 016
032
064
128
256

= 16K
= 32K
= 64K
= 128K
= 256K

Pin Count

B
C
D

= 28-pin
= 36-pin
= 44-pin

Speed

()
50

= 40 MHz – ( ) indicates a blank field; package markings for 40 MHz devices do not include the Speed
= 50 MHz

Temperature Range

I
V

= -40°C to +85°C (Industrial)
= -40°C to +105°C (V-temp)

Package

ML
ML
PT
SO
SP
SS
TL
TL

=
=
=
=
=
=
=
=

Pattern

Three-digit QTP, SQTP, Code or Special Requirements (blank otherwise)
ES = Engineering Sample

28-Lead (6x6 mm) QFN (Plastic Quad Flatpack)
44-Lead (8x8 mm) QFN (Plastic Quad Flatpack)
44-Lead (10x10x1 mm) TQFP (Plastic Thin Quad Flatpack)
28-Lead (7.50 mm) SOIC (Plastic Small Outline)
28-Lead (300 mil) SPDIP (Skinny Plastic Dual In-line)
28-Lead (5.30 mm) SSOP (Plastic Shrink Small Outline)
36-Lead (5x5 mm) VTLA (Very Thin Leadless Array)
44-Lead (6x6 mm) VTLA (Very Thin Leadless Array)

 2011-2018 Microchip Technology Inc.

DS60001168K-page 344

Note the following details of the code protection feature on Microchip devices:
•

Microchip products meet the specification contained in their particular Microchip Data Sheet.

•

Microchip believes that its family of products is one of the most secure families of its kind on the market today, when used in the
intended manner and under normal conditions.

•

There are dishonest and possibly illegal methods used to breach the code protection feature. All of these methods, to our
knowledge, require using the Microchip products in a manner outside the operating specifications contained in Microchip’s Data
Sheets. Most likely, the person doing so is engaged in theft of intellectual property.

•

Microchip is willing to work with the customer who is concerned about the integrity of their code.

•

Neither Microchip nor any other semiconductor manufacturer can guarantee the security of their code. Code protection does not
mean that we are guaranteeing the product as “unbreakable.”

Code protection is constantly evolving. We at Microchip are committed to continuously improving the code protection features of our
products. Attempts to break Microchip’s code protection feature may be a violation of the Digital Millennium Copyright Act. If such acts
allow unauthorized access to your software or other copyrighted work, you may have a right to sue for relief under that Act.

Information contained in this publication regarding device
applications and the like is provided only for your convenience
and may be superseded by updates. It is your responsibility to
ensure that your application meets with your specifications.
MICROCHIP MAKES NO REPRESENTATIONS OR
WARRANTIES OF ANY KIND WHETHER EXPRESS OR
IMPLIED, WRITTEN OR ORAL, STATUTORY OR
OTHERWISE, RELATED TO THE INFORMATION,
INCLUDING BUT NOT LIMITED TO ITS CONDITION,
QUALITY, PERFORMANCE, MERCHANTABILITY OR
FITNESS FOR PURPOSE. Microchip disclaims all liability
arising from this information and its use. Use of Microchip
devices in life support and/or safety applications is entirely at
the buyer’s risk, and the buyer agrees to defend, indemnify and
hold harmless Microchip from any and all damages, claims,
suits, or expenses resulting from such use. No licenses are
conveyed, implicitly or otherwise, under any Microchip
intellectual property rights unless otherwise stated.

Microchip received ISO/TS-16949:2009 certification for its worldwide
headquarters, design and wafer fabrication facilities in Chandler and
Tempe, Arizona; Gresham, Oregon and design centers in California
and India. The Company’s quality system processes and procedures
are for its PIC® MCUs and dsPIC® DSCs, KEELOQ® code hopping
devices, Serial EEPROMs, microperipherals, nonvolatile memory and
analog products. In addition, Microchip’s quality system for the design
and manufacture of development systems is ISO 9001:2000 certified.

QUALITY MANAGEMENT SYSTEM
CERTIFIED BY DNV

== ISO/TS 16949 ==
 2011-2018 Microchip Technology Inc.

Trademarks
The Microchip name and logo, the Microchip logo, AnyRate, AVR,
AVR logo, AVR Freaks, BeaconThings, BitCloud, CryptoMemory,
CryptoRF, dsPIC, FlashFlex, flexPWR, Heldo, JukeBlox, KEELOQ,
KEELOQ logo, Kleer, LANCheck, LINK MD, maXStylus,
maXTouch, MediaLB, megaAVR, MOST, MOST logo, MPLAB,
OptoLyzer, PIC, picoPower, PICSTART, PIC32 logo, Prochip
Designer, QTouch, RightTouch, SAM-BA, SpyNIC, SST, SST
Logo, SuperFlash, tinyAVR, UNI/O, and XMEGA are registered
trademarks of Microchip Technology Incorporated in the U.S.A.
and other countries.
ClockWorks, The Embedded Control Solutions Company,
EtherSynch, Hyper Speed Control, HyperLight Load, IntelliMOS,
mTouch, Precision Edge, and Quiet-Wire are registered
trademarks of Microchip Technology Incorporated in the U.S.A.
Adjacent Key Suppression, AKS, Analog-for-the-Digital Age, Any
Capacitor, AnyIn, AnyOut, BodyCom, chipKIT, chipKIT logo,
CodeGuard, CryptoAuthentication, CryptoCompanion,
CryptoController, dsPICDEM, dsPICDEM.net, Dynamic Average
Matching, DAM, ECAN, EtherGREEN, In-Circuit Serial
Programming, ICSP, Inter-Chip Connectivity, JitterBlocker,
KleerNet, KleerNet logo, Mindi, MiWi, motorBench, MPASM, MPF,
MPLAB Certified logo, MPLIB, MPLINK, MultiTRAK, NetDetach,
Omniscient Code Generation, PICDEM, PICDEM.net, PICkit,
PICtail, PureSilicon, QMatrix, RightTouch logo, REAL ICE, Ripple
Blocker, SAM-ICE, Serial Quad I/O, SMART-I.S., SQI,
SuperSwitcher, SuperSwitcher II, Total Endurance, TSHARC,
USBCheck, VariSense, ViewSpan, WiperLock, Wireless DNA, and
ZENA are trademarks of Microchip Technology Incorporated in the
U.S.A. and other countries.
SQTP is a service mark of Microchip Technology Incorporated in
the U.S.A.
Silicon Storage Technology is a registered trademark of Microchip
Technology Inc. in other countries.
GestIC is a registered trademark of Microchip Technology
Germany II GmbH & Co. KG, a subsidiary of Microchip Technology
Inc., in other countries.
All other trademarks mentioned herein are property of their
respective companies.
© 2011-2018, Microchip Technology Incorporated, All Rights
Reserved.
ISBN: 978-1-5224-2979-1

DS60001168K-page 345

Worldwide Sales and Service
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Technical Support:
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Web Address:
www.microchip.com

Asia Pacific Office
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Canada - Toronto
Tel: 905-695-1980
Fax: 905-695-2078

DS60001168K-page 346

China - Dongguan
Tel: 86-769-8702-9880
China - Guangzhou
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China - Hangzhou
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Tel: 886-7-213-7830

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Tel: 39-0331-742611
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Tel: 39-049-7625286
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Tel: 31-416-690399
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 2011-2018 Microchip Technology Inc.
11/07/16



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Author                          : Microchip Technology Inc.
Copyright                       : 2011-2017
Create Date                     : 2018:05:02 09:34:31Z
Keywords                        : "PIC32, 32-bit Flash, Microcontroller", PIC32MX1XX/2XX 28/36/44-PIN, PIC32MX1XX/2XX 28/36/44-PIN Data Sheet, PIC32MX, PIC32MX1XX/2XX 28/36/44, PIC32MX1XX/2XX 28/36/44-PIN DS, DS60001168K, DS60001168A, DS60001168B, DS60001168C, DS60001168D, DS60001168E, DS60001168F, DS60001168G, DS60001168, 60001168
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Format                          : application/pdf
Title                           : PIC32MX1XX/2XX 28/36/44-pin Family Data Sheet
Creator                         : Microchip Technology Inc.
Description                     : PIC32MX1XX/2XX 28/36/44-PIN
Subject                         : PIC32, 32-bit Flash, Microcontroller, PIC32MX1XX/2XX 28/36/44-PIN, PIC32MX1XX/2XX 28/36/44-PIN Data Sheet, PIC32MX, PIC32MX1XX/2XX 28/36/44, PIC32MX1XX/2XX 28/36/44-PIN DS, DS60001168K, DS60001168A, DS60001168B, DS60001168C, DS60001168D, DS60001168E, DS60001168F, DS60001168G, DS60001168, 60001168
Document ID                     : uuid:6c6d5f97-a14f-4e80-933c-c9377bd833a0
Instance ID                     : uuid:c4718cf4-d4c7-4f49-9208-051416ecf5cc
Page Mode                       : UseOutlines
Page Count                      : 346
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