Arduino_MEGA2560_ref.sch Arduino Mega2560 Schematic
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ICSP
+5V
GND
+5V
GND
GND
+5V
GNDGND
47u 47u
GND GND
GND
GND
GREEN
GND
+5V
M7
GND
MC33269D-5.0
MC33269ST-5.0T3
100n
GND
100n
100n
+3V3
+5V
+5V
ATMEGA1280-16AU
100n100n
22p
+5V
GND
100n
GND
100n
YELLOW
YELLOW
500mA
+5V
100n
GND
YELLOW
GND
100n
FDN340P
LM358DLM358D
GND
100n
GND
+5V
100n
+5V
GND
+5V
GND
1u
+5V
ATMEGA8U2-MU
ICSP
+5V
GND
GND
16MHz
GND
GND
BLM21
PGB1010604
PGB1010604
16MHz
GND
1M
1k
1k
1k
1k
10K
10K 10K
10K
10K
10K
10K
10K
1k
1k
1k
1k
22R
22R
22R
22R
GND
TS42
1M
16MHz
16MHz
22p22p
22p22p
GND
GND
GND
27R
27R
1 2
3 4
5 6
ICSP
1
2
3
4
5
6
7
8
PWML
1
2
3
4
5
6
7
8
PWMH
PC1 PC2
ON
D1
1
1
2
2
33
VI
3
1
VO 2
IC2
ADJ
1
IN
3OUT 4
2
IC1
1
2
3
4
5
6
POWER
C3
C6
C2
1
2
3
4
5
6
7
8
ADCL
1
2
3
4
5
6
7
8
COMMUNICATION
(A8)PC0 53
(A9)PC1 54
(A10)PC2 55
(A11)PC3 56
(A12)PC4 57
(A13)PC5 58
(A14)PC6 59
(A15)PC7 60
(AD0)PA0 78
(AD1)PA1 77
(AD2)PA2 76
(AD3)PA3 75
(AD4)PA4 74
(AD5)PA5 73
(AD6)PA6 72
(AD7)PA7 71
(ADC0)PF0 97
(ADC1)PF1 96
(ADC2)PF2 95
(ADC3)PF3 94
(ADC4/TCK)PF4 93
(ADC5/TMS)PF5 92
(ADC6/TDO)PF6 91
(ADC7/TDI)PF7 90
(ALE)PG2 70
(CLKO/ICP3/INT7)PE7 9
(ICP1)PD4 47
(MISO/PCINT3)PB3 22
(MOSI/PCINT2)PB2 21
(OC0A/OC1C/PCINT7)PB7 26
(OC0B)PG5 1
(OC1A/PCINT5)PB5 24
(OC1B/PCINT6)PB6 25
(OC2A/PCINT4)PB4 23
(OC3A/AIN1)PE3 5
(OC3B/INT4)PE4 6
(OC3C/INT5)PE5 7
(RD)PG1 52
(RXD0/PCIN8)PE0 2
(RXD1/INT2)PD2 45
(SCK/PCINT1)PB1 20
(SCL/INT0)PD0 43
(SDA/INT1)PD1 44
(SS/PCINT0)PB0 19
(T0)PD7 50
(T1)PD6 49
(T3/INT6)PE6 8
(TOSC1)PG4 29
(TOSC2)PG3 28
(TXD0)PE1 3
(TXD1/INT3)PD3 46
(WR)PG0 51
(XCK0/AIN0)PE2 4
(XCK1)PD5 48
AGND
99
AREF
98
AVCC
100
GND
11
32
62
81
PH0(RXD2)
12 PH1(TXD2)
13 PH2(XCK2)
14 PH3(OC4A)
15 PH4(OC4B)
16 PH5(OC4C)
17 PH6(OC2B)
18 PH7(T4)
27
PJ0(RXD3/PCINT9)
63 PJ1(TXD3/PCINT10)
64 PJ2(XCK3/PCINT11)
65 PJ3(PCINT12)
66 PJ4(PCINT13)
67 PJ5(PCINT14)
68 PJ6(PCINT15)
69 PJ7
79
PK0(ADC8/PCINT16)
89 PK1(ADC9/PCINT17)
88 PK2(ADC10/PCINT18)
87 PK3(ADC11/PCINT19)
86 PK4(ADC12/PCINT20)
85 PK5(ADC13/PCINT21)
84 PK6(ADC14/PCINT22)
83 PK7(ADC15/PCINT23)
82
PL0(ICP4)
35 PL1(ICP5)
36 PL2(T5)
37 PL3(OC5A)
38 PL4(OC5B)
39 PL5(OC5C)
40 PL6
41 PL7
42
RESET
30
VCC
10
31
61
80
XTAL1
34
XTAL2
33
GND
GND
GND
VCC
VCC
VCC
IC3
C5C4
1
2
3
4
5
6
7
8
ADCH
C1
C8
C13
RX
TX
1
2
3
4
P$1
P$1 P$2
P$2
X2 F1
C9
L
C7
T2
2
3
1
IC5A
6
5
7
IC5B
84
C12
C11
1 2
3 4
5 6
7 8
9 10
11 12
13 14
15 16
XIOH
1 2
3 4
5 6
7 8
9 10
11 12
13 14
15 16
XIOL
1JP1
1JP2
1JP3
1JP4
21
RESET-EN
C10
(PCINT9/OC1B)PC5 25
(PCINT10)PC4 26
(INT4/ICP1/CLK0)PC7 22
(OC1A/PCINT8)PC6 23
(AIN2/PCINT11)PC2 5
(PCINT5)PB5 19
(T1/PCINT4)PB4 18
(PD0/MISO/PCINT3)PB3 17
(PDI/MOSI/PCINT2)PB2 16
(SCLK/PCINT1)PB1 15
(SS/PCINT0)PB0 14
(CTS/HWB/AIN6/TO/INT7)PD7 13
(RTS/AIN5/INT6)PD6 12
(XCK/AIN4/PCINT12)PD5 11
(INT5/AIN3)PD4 10
(TXD1/INT3)PD3 9
(RXD1/AIN1/INT2)PD2 8
(AIN0/INT1)PD1 7
(OC0B/INT0)PD0 6
GND
3VCC
4
AVCC
32
UVCC
31
XTAL1
1
XTAL2(PC0)
2
RESET(PC1/DW)
24
UGND
28
IC4
PAD
EXP
UCAP
27
D-
30
D+
29
(PCINT6)PB6 20
(PCINT7/OC0A/OC1C)PB7 21
1 2
3 4
5 6
ICSP1
Y2
21
UBOOT
L1
Z1
Z2
21
GROUND
Y1
R1
1 8
RN4A
2 7
RN4B
3 6
RN4C
4 5
RN4D
18 RN5A
2 7
RN5B
3 6
RN5C
4 5
RN5D
1 8
RN1A
2 7
RN1B
3 6
RN1C
4 5
RN1D
1 8
RN3A
2 7
RN3B
3 6
RN3C
45
RN3D
18 RN2A
2 7
RN2B
3 6
RN2C
45 RN2D
13
4 2
RESET
5
R2
21
Q1
21
Q2
C14C15
C16C17
IN
1
EN
3
NC/FB 4
OUT 5
GND
2
R3
R4
+5V
+5V
GND
AREF
AREF
AREF
RESET
RESET
RESET
RESET
RESET
VIN
VIN
VIN
M8RXD
M8RXD
M8TXD
M8TXD
PWRIN
ADC0
ADC2
ADC1
ADC3
ADC4
ADC5
ADC6
ADC7
+3V3
+3V3
+3V3
SDA
SDA
SCL
SCL
ADC9
ADC8
ADC10
ADC11
ADC12
ADC13
ADC14
ADC15
PB3
PB3
PB3
PB2
PB2
PB2
PB1
PB1
PB1
PB5
PB4
PE5
PE5
PE4
PE4
PE3
PE3
PE1 PE1
PE1
PE0 PE0
PE0
DTR
USBVCC
USBVCC
USBVCC
GATE_CMD
CMP
PB6
PH3
PH3
PH4
PH4
PH5
PH5
PH6
PH6
PG5
PG5
RXD1
TXD1
RXD2
RXD2
RXD3
RXD3
TXD2
TXD2
TXD3
TXD3
PC0
PC0
PC1
PC1
PC2
PC2
PC3
PC3
PC4
PC4
PC5
PC5
PC6
PC6
PC7
PC7
PB0
PB0
PG0
PG0
PG1
PG1
PG2
PG2
PD7
PD7
PA0 PA0
PA1
PA1
PA2
PA2
PA3
PA3
PA4
PA4
PA5
PA5
PA6
PA6
PA7
PA7
PL0
PL0
PL1
PL1
PL2
PL2
PL3
PL3 PL4
PL4
PL5
PL5
PL6
PL6
PL7
PL7
PB7
VUCAP
RD-
RD-
RD+
RD+
RESET2
RESET2
MISO2
MISO2
MOSI2
MOSI2
SCK2
SCK2
XVCC
RXL
TXL
D-
D+
UGND
UGND
USHIELD
XTAL2
XTAL2
XTAL1
XTAL1
XT2
XT2
XT1
XT1
XTAL1R
XT1R
+
+
USB
0
1
2
3
4
5
6
7
8
9
10
11
12
13
15
16
17
18
19
20
21
14
(SCK)
(MISO)
(MOSI)
pwm
pwm
pwm
pwm
pwm
pwm
pwm
pwm
pwm
pwm
pwm
pwm
pwm
pwm
pwm
(TX0)
(RX0)
51
5253
pwm
pwm
pwm
pwm
pwm
(MISO)
(SCK)
(MOSI)
(SS)
(MOSI)
(SCK)
(MISO)
2223
2425
2627
2829
30
32
34
36
31
33
35
37
49
47
45
43
41
39
50
48
46
44
42
40
38
pwm
pwm
pwm
pwm
pwm
USB boot En
Arduino Mega 2560 Reference Design
TM
Reference Designs ARE PROVIDED "AS IS" AND "WITH ALL FAULTS". Arduino DISCLAIMS ALL OTHER WARRANTIES, EXPRESS OR IMPLIED,
Arduino may make changes to specifications and product descriptions at any time, without notice. The Customer must not
REGARDING PRODUCTS, INCLUDING BUT NOT LIMITED TO, ANY IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE
rely on the absence or characteristics of any features or instructions marked "reserved" or "undefined." Arduino reserves
these for future definition and shall have no responsibility whatsoever for conflicts or incompatibilities arising from future changes to them.
The product information on the Web Site or Materials is subject to change without notice. Do not finalize a design with this information.
