STM32 Nucleo 32 Board Nuclero User Manual [en.DM00231744]

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UM1956
User manual
STM32 Nucleo-32 board

Introduction
The STM32 Nucleo-32 board (NUCLEO-F031K6, NUCLEO-F042K6, NUCLEO-F303K8,
NUCLEO-L011K4, NUCLEO-L031K6, NUCLEO-L432KC) provides an affordable and
flexible way for users to try out new concepts and build prototypes with STM32
microcontroller, choosing from the various combinations of performance, power
consumption and features. The Arduino™ Nano connectivity support makes it easy to
expand the functionality of the Nucleo-32 open development platform with a wide choice of
specialized shields. The STM32 Nucleo-32 board does not require any separate probe as it
integrates the ST-LINK/V2-1 debugger/programmer and it comes with the STM32
comprehensive software HAL library, together with various packaged software examples, as
well as direct access to the ARM® mbed™ online resources at http: //mbed.org.

Figure 1. STM32 Nucleo-32 board

1. Picture not contractual.

June 2016

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www.st.com

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Contents

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Contents
1

Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

2

Product marking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

3

Ordering information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

4

Conventions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

5

Quick start . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

6

5.1

Getting started . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

5.2

System requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Hardware layout and configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
6.1

STM32 Nucleo-32 board layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11

6.2

STM32 Nucleo-32 board mechanical drawing . . . . . . . . . . . . . . . . . . . . . 13

6.3

Embedded ST-LINK/V2-1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

6.4

6.3.1

Drivers

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

6.3.2

ST-LINK/V2-1 firmware upgrade . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Power supply and power selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
6.4.1

Power supply input from USB connector . . . . . . . . . . . . . . . . . . . . . . . . 16

6.4.2

External power supply inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
VIN or +5V power supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17
+3V3 power supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18

6.4.3

7

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External power supply output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

6.5

LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

6.6

Push-button . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

6.7

JP1 (IDD) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

6.8

OSC clock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

6.9

USART virtual communication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

6.10

Solder bridges . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20

6.11

Arduino Nano connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

Electrical schematics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

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Contents

Appendix A Compliance statements. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
A.1

Federal Communications Commission (FCC) and Industry Canada (IC)
Compliance Statements32
A.1.1

FCC Compliance Statement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Part 15.1933 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .32
Part 15.105 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .32
Part 15.21 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .32

A.1.2

IC Compliance Statement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Compliance Statement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .32
Déclaration de conformité. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .32

8

Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

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List of tables

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List of tables
Table 1.
Table 2.
Table 3.
Table 4.
Table 5.
Table 6.
Table 7.
Table 8.
Table 9.
Table 10.
Table 11.
Table 12.
Table 13.
Table 14.

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Ordering information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
ON/OFF conventions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
SB1 configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
External power sources . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
OSC clock configurations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Virtual communication configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Solder bridges. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Arduino Nano connectors on NUCLEO-F031K6 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Arduino Nano connectors on NUCLEO-F042K6 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Arduino Nano connectors on NUCLEO-F303K8 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Arduino Nano connectors on NUCLEO-L011K4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Arduino Nano connectors on NUCLEO-L031K6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Arduino Nano connectors on NUCLEO-L432KC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Document revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

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List of figures

List of figures
Figure 1.
Figure 2.
Figure 3.
Figure 4.
Figure 5.
Figure 6.
Figure 7.
Figure 8.
Figure 9.
Figure 10.
Figure 11.

STM32 Nucleo-32 board. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Hardware block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
STM32 Nucleo-32 board top layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
STM32 Nucleo-32 board bottom layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
STM32 Nucleo-32 board mechanical drawing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
USB composite device . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
NUCLEO-F031K6, NUCLEO-F042K6, NUCLEO-F303K8 pin assignment . . . . . . . . . . . . 28
NUCLEO-L011K4, NUCLEO-L031K6 and NUCLEO-L432KC pin assignment . . . . . . . . . 28
STM32 Nucleo-32 board (top view) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
MCU . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
ST-LINK/V2-1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

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5

Features

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Features
•

STM32 microcontrollers in 32-pin packages

•

Extension with Arduino™ Nano connectivity

•

ARM® mbed™-enabled (see http: //mbed.org)

•

On-board ST-LINK/V2-1 debugger/programmer with SWD connector:
–

USB re-enumeration capability. Three different interfaces supported on USB:
virtual Com port, mass storage, debug port

• Flexible board power supply:

•

–

USB VBUS

–

External source

Three LEDs:
–

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USB communication (LD1), power LED (LD2), user LED (LD3)

•

Reset push-button

•

Supported by wide choice of Integrated Development Environments (IDEs) including
IAR™, Keil®, GCC-based IDEs (AC6: SW4STM32,...)

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2

Product marking

Product marking
Evaluation tools marked as "ES" or "E" are not yet qualified and therefore they are not ready
to be used as reference design or in production. Any consequences deriving from such
usage will not be at ST charge. In no event, ST will be liable for any customer usage of
these engineering sample tools as reference design or in production.
"E" or "ES" marking examples of location:

3

•

On the targeted STM32 that is soldered on the board (for illustration of STM32 marking,
refer to the section “Package information” of the STM32 datasheet at www.st.com).

•

Next to the evaluation tool ordering part number, that is stuck or silk-screen printed on
the board.

Ordering information
The order codes and the respective targeted STM32 are listed in the below Table 1.
Table 1. Ordering information
Target STM32

Order code

STM32F031K6T6

NUCLEO-F031K6

STM32F042K6T6

NUCLEO-F042K6

STM32F303K8T6

NUCLEO-F303K8

STM32L011K4T6

NUCLEO-L011K4

STM32L031K6T6

NUCLEO-L031K6

STM32L432KCU6

NUCLEO-L432KC

The meaning of NUCLEO-TXXXKY codification is as follows:
•

T describes the STM32 product line (T for F or L)

•

XXX describes the silicon special features

•

K describes the pin count (K for 32 pins)

•

Y describes the memory size (4 for 16 Kbytes, 6 for 32 Kbytes, 8 for 64 Kbytes, C for
256 Kbytes)

The last six characters (e.g.: L031K6) of the order code, are printed on a sticker placed at
the top or bottom side of the board.

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Conventions
Table 2 provides the conventions used for the ON and OFF settings in the present
document.
Table 2. ON/OFF conventions
Convention

Definition

Jumper JPx ON

Jumper fitted

Jumper JPx OFF

Jumper not fitted

Solder bridge SBx ON

SBx connections closed by solder or 0 ohm resistor

Solder bridge SBx OFF

SBx connections left open

In this document the reference is “STM32 Nucleo-32 board” for all information that is
common to all sale types.

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5

Quick start

Quick start
The STM32 Nucleo-32 board is a low-cost and easy-to-use development kit used to quickly
evaluate and start a development with an STM32 microcontroller in LQFP32 or UFQFPN32
package.
Before installing and using the product, accept the Evaluation Product License Agreement
that can be found at www.st.com/epla.
For more information on the STM32 Nucleo-32 board and to access the demonstration
software, visit the www.st.com/stm32nucleo webpage.

5.1

Getting started
Follow the sequence below, to configure the STM32 Nucleo-32 board and launch the
demonstration software:

5.2

•

Check solder bridge position on the board, SB1 OFF, SB14 ON (internal regulator), JP1
ON (IDD) selected.

•

For a correct identification of all device interfaces from the host PC and before
connecting the board, install the Nucleo USB driver, available at the
www.st.com/stm32nucleo webpage.

•

To power the board connect the STM32 Nucleo-32 board to a PC through the USB
connector CN1 with a USB cable Type-A to Micro-B. The red LED LD2 (PWR) and LD1
(COM) light up and green LED LD3 blinks.

•

Remove the jumper placed between D2 (CN3 pin 5) and GND (CN3 pin 4).

•

Observe how the blinking frequency of the green LED LD3 changes, when the jumper
is in place or when it is removed.

•

The demonstration software and several software examples on how to use the STM32
Nucleo-32 board features, are available at the www.st.com/stm32nucleo webpage.

•

Develop an application using the available examples.

System requirements
•

Windows® (XP, 7, 8)

•

USB Type-A to Micro-B USB cable

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Hardware layout and configuration
The STM32 Nucleo-32 board is based on a 32-pin STM32 microcontroller in LQFP or
UFQFPN package.
Figure 2 illustrates the connections between the STM32 and its peripherals (ST-LINK/V2-1,
push-button, LED, and Arduino Nano connectors).
Figure 3: STM32 Nucleo-32 board top layout and Figure 4: STM32 Nucleo-32 board bottom
layout show the location of these connections on the STM32 Nucleo-32 board.
Figure 2. Hardware block diagram
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86%

670
0LFURFRQWUROOHU
,2

,2
5(6(7
%
567

$UGXLQR1DQR
FRQQHFWRU

$UGXLQR1DQR
FRQQHFWRU

(PEHGGHG
67/,1.9

/('
/'

06Y9

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6.1

Hardware layout and configuration

STM32 Nucleo-32 board layout
Figure 3. STM32 Nucleo-32 board top layout
CN1
ST-LINK Micro B
USB connector

LD1
(Red/Green LED)
COM

CN2
ST-LINK SWD
connector
(reserved)

SB2
Connect VCP TX to ST-LINK

SB1
Power configuration

SB3
Connect VCP RX to ST-LINK
SB8
Connect PF1/PC15 to D7
SB7
Connect PF1/PC15 to X1
SB5
Connect PF0/PC14 to X1
SB6
Connect PF0/PC14 to D8

U2
STM32
Microcontroller

SB4
Connect PF0/PC14 to MCO
B1
Reset Button

LD3
(Green LED)

LD2
(Red LED) Power

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Figure 4. STM32 Nucleo-32 board bottom layout

SB9
ST-LINK RESET

CN4
Arduino Nano connector

SB18
Connect D4 to A4

CN3
Arduino Nano connector

SB16
Connect D5 to A5

SB12
Connect BOOT0 to GND

SB11
Connect 670 pin 16 to
GND

SB13
Connect GND to 670 pin
32
SB10
Connect VDD to 670
pin 5
SB17
Connect MCO to PA0

SB14
3.3V regulator output

JP1
IDD measurement

SB15
Connect D13 to LD3

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6.2

Hardware layout and configuration

STM32 Nucleo-32 board mechanical drawing
Figure 5. STM32 Nucleo-32 board mechanical drawing

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Embedded ST-LINK/V2-1
The ST-LINK/V2-1 programming and debugging tool is integrated in the STM32 Nucleo-32
board. The ST-LINK/V2-1 makes the STM32 Nucleo-32 board mbed enabled.
The embedded ST-LINK/V2-1 supports only the SWD for STM32 devices. For information
about debugging and programming features refer to: ST-LINK/V2 in-circuit
debugger/programmer for STM8 and STM32 User manual (UM1075), which describes in
detail all the ST-LINK/V2 features.
The new features supported by the ST-LINK/V2-1 comparing with ST-LINK/V2 are:
•

USB software re-enumeration

•

Virtual Com port interface on USB

•

Mass storage interface on USB

•

USB power management request for more than 100 mA power on USB

The features not supported on ST-LINK/V2-1 are:
•

SWIM interface

•

Minimum supported application voltage limited to 3 V

Known limitation:
•

Activating the readout protection on the STM32 target, prevents the target application
from running afterwards. The target readout protection must be kept disabled on STLINK/V2-1 boards.

The embedded ST-LINK/V2-1 is directly connected to the SWD port of the target STM32.

6.3.1

Drivers
The ST-LINK/V2-1 requires a dedicated USB driver, which, for Windows XP, 7 and 8, can be
found at www.st.com.
In case the STM32 Nucleo-32 board is connected to the PC before the driver is installed,
some Nucleo interfaces may be declared as “Unknown” in the PC device manager. In this
case the user must install the driver files (refer to Figure 6) and from the device manager
update the driver of the connected device.

Note:

Prefer using the “USB Composite Device” handle for a full recovery.
Figure 6. USB composite device

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6.3.2

Hardware layout and configuration

ST-LINK/V2-1 firmware upgrade
The ST-LINK/V2-1 embeds a firmware upgrade mechanism for in-situ upgrade through the
USB port. As the firmware may evolve during the lifetime of the ST-LINK/V2-1 product (for
example new functionalities added, bug fixes, support for new microcontroller families), it is
recommended to visit www.st.com before starting to use the STM32 Nucleo-32 board and
periodically, to stay up-to-date with the latest firmware version.

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Power supply and power selection
The power supply is provided either by the host PC through the USB cable, or by an
external source: VIN (7 V-12 V), +5 V (5 V) or +3V3 power supply pins on CN4. In case VIN,
+5 V or +3V3 is used to power the STM32 Nucleo-32 board, this power source must comply
with the standard EN-60950-1: 2006+A11/2009, and must be Safety Extra Low Voltage
(SELV) with limited power capability.
In case the power supply is +3V3, the ST-LINK is not powered and cannot be used.

6.4.1

Power supply input from USB connector
The STM32 Nucleo-32 board and shield board can be powered from the ST-LINK USB
connector CN1. Note that only the ST-LINK part is power supplied before the USB
enumeration phase, as the host PC only provides 100 mA to the boards at that time. During
the USB enumeration, the STM32 Nucleo-32 board requires 300 mA of current to the host
PC. If the host is able to provide the required power, the targeted STM32 microcontroller is
powered and the red LED LD2 is turned on, thus the STM32 Nucleo-32 board and its shield
consume a maximum of 300 mA current and not more. If the host is not able to provide the
required current, the targeted STM32 microcontroller and the shield board are not power
supplied. As a consequence the red LED LD2 stays turned off. In such case it is mandatory
to use an external power supply as explained in the next Section 6.4.2: External power
supply inputs.
SB1 is configured according to the maximum current consumption of the board. SB1 can be
set to on to inform the host PC that the maximum current consumption does not exceed
100 mA (even when Arduino Nano shield is plugged). In such condition USB enumeration
will always succeed since no more than 100 mA is requested to the host PC. Possible
configurations of SB1 are summarized in Table 3.
Table 3. SB1 configuration
Solder bridge state
SB1 OFF (default)
SB1 ON
SB1 (ON/OFF)

Warning:

Note:

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Power supply
USB power through CN1
VIN, +3V3 or +5 V power

Allowed current
300 mA max
100 mA max
For current limitation refer to Table 4

If the maximum current consumption of the STM32 Nucleo-32
board and its shield board exceed 300 mA, it is mandatory to
power the STM32 Nucleo-32 board, using an external power
supply connected to VIN, +5 V or +3V3.

In case the board is powered by a USB charger, there is no USB enumeration, so the LED
LD2 remains set to off permanently and the target STM32 is not powered. In this specific
case the SB1 must be set to on, to allow the target STM32 to be powered anyway.

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6.4.2

Hardware layout and configuration

External power supply inputs
The STM32 Nucleo-32 board and its shield boards can be powered in three different ways
from an external power supply, depending on the voltage used. The three power sources
are summarized in the Table 4.
Table 4. External power sources
Input power
name

Connector
pin

Voltage
range

Max current

Limitation

VIN

CN4 pin 1

7 V to 12 V

800 mA

From 7 V to 12 V only and input
current capability is linked to input
voltage:
800mA input current when VIN=7 V
450mA input current when
7 V< VIN <9 V
300 mA input current when
10 V> VIN >9 V
less than 300 mA input current when
VIN>10 V

+5 V

CN4 pin 4

4.75 V to
5.25 V

500 mA

ST-LINK not powered

+3V3

CN4 pin 14

3 V to 3.6 V

-

ST-LINK not powered and SB14 and
SB9 must be off.

VIN or +5V power supply
When powered from VIN or +5 V, it is still possible to use ST-LINK for communication for
programming or debugging only, but it is mandatory to power the board first, using VIN or
+5 V, then to connect the USB cable to the PC. By this way the enumeration will succeed
anyway, thanks to the external power source.
The following power sequence procedure must be respected:
1.

Check that SB1 is off

2.

Connect the external power source to VIN or +5 V

3.

Power on the external power supply 7 V< VIN < 12 V to VIN, or 5 V for +5 V

4.

Check red LED LD2 is turned on

5.

Connect the PC to USB connector CN1

If this order is not respected, the board may be powered by VBUS first, then by VIN or +5 V,
and the following risks may be encountered:
1.

If more than 300 mA current is needed by the board, the PC may be damaged or
current supplied is limited by the PC. As a consequence the board is not powered
correctly.

2.

300 mA is requested at enumeration (since SB1 must be off) so there is the risk that
the request is rejected and the enumeration does not succeed if the the PC cannot
provide such current. Consequently the board is not power supplied (LED LD2 remains
off).

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+3V3 power supply
Using the +3V3 (CN4 pin 14) directly as power input, can be interesting, for instance, in
case the 3.3 V is provided by a shield board. In this case the ST-LINK is not powered, thus
programming and debugging features are not available. When the board is powered by
+3V3 (CN4 pin 14), the solder bridge SB14 and SB9 (NRST) must be off.

6.4.3

External power supply output
When powered by USB or VIN, the +5 V (CN4 pin 4) can be used as output power supply
for an Arduino Nano shield. In this case, the maximum current of the power source specified
in Table 4: External power sources must be respected.
The +3.3 V (CN4 pin 14) can be used also as power supply output. The current is limited by
the maximum current capability of the regulator U3 (500 mA max).

6.5

LEDs
The tricolor LED (green, orange, red) LD1 (COM) provides information about ST-LINK
communication status. LD1 default color is red. LD1 turns to green to indicate that the
communication is in progress between the PC and the ST-LINK/V2-1, with the following
setup:
•

Slow blinking red/off: at power-on before USB initialization

•

Fast blinking red/off: after the first correct communication between PC and STLINK/V2-1 (enumeration)

•

Red on: when initialization between PC and ST-LINK/V2-1 is completed

•

Green on: after a successful target communication initialization

•

Blinking red/green: during communication with target

•

Green on: communication finished and successful

•

Orange on: communication failure

User LD3: the green LED is a user LED connected to Arduino Nano signal D13
corresponding to the STM32 I/O PB3 (pin 26). Refer to Table 8, Table 9, Table 10, Table 11
and Table 12 for concerned STM32:
•

When the I/O is HIGH value, the LED is on

•

When the I/O is LOW, the LED is off

PWR LD2: the red LED indicates that the STM32 part is powered and +5 V power is
available.

6.6

Push-button
B1 RESET: the push-button is connected to NRST, and it is used to reset the STM32.

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6.7

Hardware layout and configuration

JP1 (IDD)
JP1, labeled IDD, is used to measure the STM32 microcontroller consumption by removing
the jumper and connecting an ammeter:
•

JP1 on: STM32 is powered (default)

•

JP1 off: an ammeter must be connected to measure the STM32 current

If there is no ammeter, STM32 is not powered.

6.8

OSC clock
U2 pin 2 and pin 3 can be used as OSC clock input or as Arduino Nano D8 and D7 GPIO.
There are four ways to configure the pins corresponding to different STM32 and clock usage
(refer to Table 5).
Table 5. OSC clock configurations
Solder bridge
SB4

SB17

SB6

SB8

SB5 and
SB7

ON

OFF

OFF

ON

OFF

STM32

STM32Fxxx

Clock configuration

MCO from ST-LINK
connected to OSCIN
(PF0) (1)

OFF

OFF

ON

ON

OFF

HSI configuration
(default configuration)

OFF

ON

OFF

OFF

OFF

MCO from ST-LINK
connected to CKIN
(PA0)(1)

STM32Lxxx
OFF

OFF

OFF

OFF

ON

32K LSE mounted on X1
(default configuration)

OFF

OFF

ON

ON/OFF

OFF

Arduino Nano D7
connected to PF0 / PC14

All
OFF

OFF

ON/OFF

ON

OFF

Arduino Nano D8
connected to PF1 / PC15

1. In applications where VCP is used for communication at a speed higher than 9600 bauds, it may be
needed to use this solder bridge configuration, to use 8 MHz clock (MCO from ST-LINK) and get a more
precise frequency.

Boards with STM32Lxxx are delivered with 32.768 KHz crystal (X1). Associated capacitors
and solder bridges (C12, C13 and SB4 to SB8) are configured to support LSE by default.
Boards with STM32Fxxx are delivered without crystal (X1). Associated capacitors (C12,
C13) are not populated and SB4 to SB8 are configured to support HSI by default.

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USART virtual communication
Thanks to SB2 and SB3, the USART interface of STM32 available on PA2 (TX) and PA15
(RX), can be connected to ST-LINK/V2-1. When USART is not used it is possible to use PA2
as Arduino Nano A7. Refer to Table 6.
Table 6. Virtual communication configuration
Bridge

State(1)

SB2

SB3

Description

OFF

PA2 is connected to CN4 pin 5 as Arduino Nano analog input A7 and
disconnected from ST-LINK USART.

ON

PA2 is connected to ST-LINK as virtual Com TX (default).

OFF

PA15 is not connected.

ON

PA15 is connected to ST-LINK as virtual Com RX (default).

1. The default configuration is reported in bold style.

6.10

Solder bridges
Table 7. Solder bridges
Bridge

SB10 (VREF+)

SB15 (LD3-LED)

State(1)
ON

VREF+ on STM32 is connected to VDD.

OFF

VREF+ on STM32 is not connected to VDD and it is provided by
pin 13 of CN4.

ON

Green user LED LD3 is connected to D13 of Arduino Nano signal.

OFF

Green user LED LD3 is not connected.

ON

The NRST signal of ST-LINK is connected to the NRST pin of the
STM32.

OFF

The NRST signal of ST-LINK is not connected to the NRST pin of
the STM32, when used external power (+3V3, +5 V) as power
supply.

ON

Pin 16 of STM32 (U2) is connected to VSS.

OFF

Pin 16 of STM32 (U2) is not connected to VSS, and used as GPIO
PB2 for STM32F031.

ON

Pin 32 of STM32 (U2) is connected to VSS.

OFF

Pin 32 of STM32 (U2) is not connected to VSS, and used as GPIO
PB8 for STM32F031.

ON

Pin 31 of STM32 (U2) is connected to GND via 10K pull-down and
used as BOOT0.

OFF

Pin 16 of STM32 (U2) is not connected and is GPIO PB8 for
STM32F042.

ON

STM32 PB6 is connected to CN4 pin 7 for I2C SDA support on
Arduino Nano A5. In such case STM32 PB6 does not support
Arduino Nano D5 and PA6 must be configured as input floating.

SB9 (NRST)

SB11 (PB2/VSS)

SB13 (PB8/VSS)

SB12 (PB8/BOOT0)

SB16

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Description

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Hardware layout and configuration
Table 7. Solder bridges (continued)
Bridge

State(1)

SB16

OFF

CN4 pin 7 is used as Arduino Nano analog input A5 without I2C
support and CN3 pin 8 is available as Arduino Nano D5.

ON

STM32 PB7 is connected to CN4 pin 8 for I2C SCL support on
Arduino Nano A4. In such case STM32 PB7 does not support
Arduino Nano D4 and PA5 must be configured as input floating.

OFF

CN4 pin 8 is used as Arduino Nano analog input A4 without I2C
support and CN3 pin 7 is available as Arduino Nano D4.

SB18

Description

1. The default configuration is reported in bold style.

6.11

Arduino Nano connectors
CN3 and CN4 are male connectors compatible with Arduino Nano standard. Most shields
designed for Arduino Nano can fit the STM32 Nucleo-32 board.

Caution:

The I/Os of STM32 are 3.3 V compatible instead of 5 V for Arduino Nano.
Table 8, Table 9, Table 10, Table 11 and Table 12 show the pin assignments of each STM32
on Arduino Nano connectors.
Figure 7 and Figure 8 show Arduino Nano connectors and pin assignments for
NUCLEO-F031K6, NUCLEO-F042K6, NUCLEO-F303K8, NUCLEO-L011K4, NUCLEOL031K6 and NUCLEO-L432KC.
Table 8. Arduino Nano connectors on NUCLEO-F031K6
Connector

Pin number

Pin name

STM32 pin

Function

Left connector

CN3

1

D1

PA9

USART1_TX(1)

2

D0

PA10

USART1_RX(1)

3

RESET

NRST

RESET

4

GND

-

Ground

5

D2

PA12

-

6

D3

PB0

TIM3_CH3

7

(5)

D4

PB7

-

8

D5(5)

PB6

TIM16_CH1N(2)

9

D6

PB1

TIM14_CH1

10

(3)

D7

PF0

-

11

D8(3)

PF1

-

12

D9

PA8

TIM1_CH1

13

D10

PA11

SPI_CS(4) || TIM1_CH4

14

D11

PB5

SPI1_MOSI || TIM3_CH2

15

D12

PB4

SPI1_MISO

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Table 8. Arduino Nano connectors on NUCLEO-F031K6 (continued)
Connector

Pin number

Pin name

STM32 pin

Function

Right connector
CN4

1

VIN

-

Power input

2

GND

-

Ground

3

RESET

NRST

RESET

4

+5V

-

5V input/output

5

A7

PA2

ADC_IN2

6

A6

7
CN4

8

PA7

ADC_IN7

(5)

PA6

ADC_IN6 || I2C1_SCL

(5)

PA5

ADC_IN5 || I2C1_SDA

A5

A4

9

A3

PA4

ADC_IN4

10

A2

PA3

ADC_IN3

11

A1

PA1

ADC_IN1

12

A0

PA0

ADC_IN0

13

AREF

-

AVDD

14

+3V3

-

3.3V input/output

15

D13

PB3

SPI1_SCK

1. Only one USART is available and it is shared between Arduino Nano and VCP. The selection is done by
remapping (no need to change the hardware configuration).
2. D5 PWM on inverted channel Timer 16.
3. D7/D8 shared with OSC_IN/OSC_OUT.
4. SPI_CS is made by GPIO.
5. Limitations on A4 and A5, D4 and D5 related to I2C configuration are explained in Section 6.10: Solder
bridges according to SB16/SB18 setting.

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DocID028406 Rev 3

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Hardware layout and configuration
Table 9. Arduino Nano connectors on NUCLEO-F042K6
Connector

Pin number

Pin name

STM32 pin

Function

Left connector

CN3

1

D1

PA9

USART1_TX

2

D0

PA10

USART1_RX

3

RESET

NRST

RESET

4

GND

-

Ground

5

D2

PA12

-

6

D3

PB0

TIM3_CH3

7

D4(1)

PB7

-

8

D5(1)

PB6

TIM16_CH1N(2)

9

D6

PB1

TIM14_CH1

10

D7(3)

PF0

-

11

D8(3)

PF1

-

12

D9

PA8

TIM1_CH1

13

D10

PA11

SPI_CS(4) || TIM1_CH4

14

D11

PB5

SPI1_MOSI || TIM3_CH2

15

D12

PB4

SPI1_MISO

Right connector

CN4

1.

1

VIN

-

Power input

2

GND

-

Ground

3

RESET

NRST

RESET

4

+5V

-

5V input/output

5

A7

PA2

ADC_IN2(5)

6

A6

PA7

ADC_IN7

7

(1)

A5

PA6

ADC_IN6 || I2C1_SCL

8

A4(1)

PA5

ADC_IN5 || I2C1_SDA

9

A3

PA4

ADC_IN4

10

A2

PA3

ADC_IN3

11

A1

PA1

ADC_IN1

12

A0

PA0

ADC_IN0

13

AREF

-

AVDD

14

+3V3

-

3.3V input/output

15

D13

PB3

SPI1_SCK

Limitations on A4 and A5, D4 and D5 related to I2C configuration are explained in Section 6.10: Solder

bridges according to SB16/SB18 setting.

2. D5 PWM on inverted channel Timer 16.
3. D7/D8 shared with OSC_IN/OSC_OUT.
4. SPI_CS is made by GPIO.
5. A7 exclusive with VCP_TX.

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Table 10. Arduino Nano connectors on NUCLEO-F303K8
Connector

Pin number

Pin name

STM32 pin

Function

Left connector

CN3

1

D1

PA9

USART1_TX

2

D0

PA10

USART1_RX

3

RESET

NRST

RESET

4

GND

-

Ground

5

D2

PA12

-

6

D3

PB0

TIM3_CH3

7

D4(1)

PB7

-

8

D5(1)

PB6

TIM16_CH1N(2)

9

D6

PB1

TIM3_CH4

10

D7(3)

PF0

-

11

D8(3)

PF1

-

12

D9

PA8

TIM1_CH1

13

D10

PA11

SPI_CS(4) || TIM1_CH4

14

D11

PB5

SPI1_MOSI || TIM17_CH1

15

D12

PB4

SPI1_MISO

Right connector

CN4

1.

1

VIN

-

Power input

2

GND

-

Ground

3

RESET

NRST

RESET

4

+5V

-

5V input/output

5

A7

PA2

ADC1_IN3(5)

6

A6

PA7

ADC2_IN4

7

A5

(1)

PA6

ADC2_IN3 || I2C1_SCL

8

A4(1)

PA5

ADC2_IN2 || I2C1_SDA

9

A3

PA4

ADC2_IN1

10

A2

PA3

ADC1_IN4

11

A1

PA1

ADC1_IN2

12

A0

PA0

ADC1_IN1

13

AREF

-

AVDD

14

+3V3

-

3.3V input/output

15

D13

PB3

SPI1_SCK

Limitations on A4 and A5, D4 and D5 related to I2C configuration are explained in Section 6.10: Solder

bridges according to SB16/SB18 setting.

2. D5 PWM on inverted channel Timer 16.
3. D7/D8 shared with OSC_IN/OSC_OUT.
4. SPI_CS is made by GPIO.
5. A7 exclusive with VCP_TX.

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Hardware layout and configuration
Table 11. Arduino Nano connectors on NUCLEO-L011K4
Connector

Pin
number

Pin Name

1

D1

PA9

USART2_TX(1)

2

D0

PA10

USART2_RX(1)

3

RESET

NRST

RESET

4

GND

-

Ground

5

D2

PA12

-

6

D3

PB0

TIM2_CH3(2)

STM32 pin

Function

Left connector

CN3

7

(3)

D4

PB7

8

D5(3)

PB6

TIM2_CH3(2)

9

D6

PB1

TIM2_CH4

10

D7(4)

PC14

11

D8(4)

PC15

12

D9

PA8

TIM(5)

13

D10

PA11

SPI_CS(6) || TIM(5)

14

D11

PB5

SPI1_MOSI || TIM(5)

15

D12

PB4

SPI1_MISO

1

VIN

Right connector

CN4

-

Power input

2

GND

-

Ground

3

RESET

NRST

RESET

4

+5V

-

5V input/output

5

A7

PA2

ADC_IN2(7)

6

A6

PA7

ADC_IN7

7

A5(3)

PA6

ADC_IN6 || I2C1_SCL

8

A4(3)

PA5

ADC_IN5 || I2C1_SDA

9

A3

PA4

ADC_IN4

10

A2

PA3

ADC_IN3

11

A1

PA1

ADC_IN1

12

A0

PA0

ADC_IN0

13

AREF

-

AVDD

14

+3V3

-

3.3V input/output

15

D13

PB3

SPI1_SCK

1. Only one USART is available and it is shared between Arduino Nano and VCP. The selection is done by
remapping (no hardware configuration to change).
2. D3 and D5 PWM are using same channel of TIM2_CH3.
3. Limitations on A4 and A5, D4 and D5 related to I2C configuration are explained in Section 6.10: Solder
bridges according to SB16/SB18 setting.
4. D7/D8 shared with OSC_IN/OSC_OUT.
5. No PWM on D9, D10, D11.
6. SPI_CS is made by GPIO.
7. PA2 exclusive with VCP_TX.

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Table 12. Arduino Nano connectors on NUCLEO-L031K6
Connector Pin number

Pin name

STM32 pin

Function

Left connector

CN3

1

D1

PA9

USART2_TX(1)

2

D0

PA10

USART2_RX(1)

3

RESET

NRST

RESET

4

GND

-

Ground

5

D2

PA12

-

6

D3

PB0

TIM2_CH3

7

(2)

D4

PB7

-

8

D5(2)

PB6

TIM21_CH1

9

D6

10

PB1

TIM2_CH4

(3)

PC14

-

(3)

D7

PC15

-

12

D9

PA8

TIM2_CH1

13

D10

PA11

SPI_CS(4) || TIM21_CH2

14

D11

PB5

SPI1_MOSI || TIM22_CH2

15

D12

PB4

SPI1_MISO

11

D8

Right connector

CN4

1

VIN

-

Power input

2

GND

-

Ground

3

RESET

NRST

RESET

4

+5V

-

5V input/output

5

A7

PA2

ADC_IN2(5)

6

A6

PA7

ADC_IN7

7

(2)

A5

PA6

ADC_IN6 || I2C1_SCL

8

A4(2)

PA5

ADC_IN5 || I2C1_SDA

9

A3

PA4

ADC_IN4

10

A2

PA3

ADC_IN3

11

A1

PA1

ADC_IN1

12

A0

PA0

ADC_IN0

13

AREF

-

AVDD

14

+3V3

-

3.3V input/output

15

D13

PB3

SPI1_SCK

1. Only one USART is available and it is shared between Arduino Nano and VCP. The selection is done by
remapping (no hardware configuration to change).
2. Limitations on A4 and A5, D4 and D5 related to I2C configuration are explained in Section 6.10: Solder
bridges according to SB16/SB18 setting.
3. D7/D8 shared with OSC32_IN/OSC32_OUT.
4. SPI_CS is made by GPIO.
5. PA2 exclusive with VCP_TX.

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Hardware layout and configuration
Table 13. Arduino Nano connectors on NUCLEO-L432KC
Connector

Pin number

Pin name

STM32 pin

Function

Left connector
1

PA9

USART1_TX

2

D0

PA10

USART1_RX

3

RESET

NRST

RESET

4

GND

-

Ground

5

D2

PA12

-

6

D3

PB0

TIM1_CH2N(1)

7
CN3

D1

8

(2)

PB7

(2)

PB6

TIM16_CH1N(1)
TIM1_CH3N(1)

D4

D5

9

D6

PB1

10

D7(3)

PC14

11

D8(3)

PC15

12

D9

PA8

TIM1_CH1

13

D10

PA11

SPI_CS(4) || TIM1_CH4

14

D11

PB5

SPI1_MOSI || TIM(5)

15

D12

PB4

SPI1_MISO

Right connector
1

CN4

VIN

-

Power input

2

GND

-

Ground

3

RESET

NRST

RESET

4

+5V

-

5V input/output

5

A7

PA2

ADC12_IN7(6)

6

A6

PA7

ADC12_IN12

7

A5(1)

PA6

ADC12_IN11 || I2C1_SCL

8

A4(1)

PA5

ADC12_IN10 || I2C1_SDA

9

A3

PA4

ADC12_IN9

10

A2

PA3

ADC12_IN8

11

A1

PA1

ADC12_IN6

12

A0

PA0

ADC12_IN5

13

AREF

-

AVDD

14

+3V3

-

3.3V input/output

15

D13

PB3

SPI1_SCK

1. D3, D5 and D6 PWM on inverted channel.
2. Limitations on A4 and A5, D4 and D5 related to I2C configuration are explained in Section 6.10: Solder
bridges according to SB16/SB18 setting.
3. D7/D8 shared with OSC32_IN/OSC32_OUT.
4. SPI_CS is made by GPIO.
5. No PWM on D11.
6. PA2 exclusive with VCP_TX.

DocID028406 Rev 3

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Hardware layout and configuration

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Figure 7. NUCLEO-F031K6, NUCLEO-F042K6, NUCLEO-F303K8 pin assignment

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28/34

DocID028406 Rev 3

Electrical schematics

UM1956

7

Figure 9. STM32 Nucleo-32 board (top view)

DocID028406 Rev 3

U_ST_LINK_V2-1
ST_LINK_V2-1.SCHDOC

U_MCU_32
MCU_32.SchDoc
VCP_TX
VCP_RX

STLK_RX
STLK_TX

SWCLK
SWDIO
MCO

TCK
TMS
MCO

NRST

NRST

SWO

Title: TOP
Project: NUCLEO32
Size: A4

Reference: MB1180

Date: 10/12/2015

Revision: C.2
Sheet: 1 of 3

29/34

Electrical schematics

REV B: SB14 changed to JP1 Jumper for easy IDD measurement, and enlarge
board length; CN1 USB PN changed to Micro-B for Device.
REV C: Add SB18/SB16 for connecting D4/D5 to A4/A5
REV C.2: correct silkscreen D7/D8 on SB6 and SB8

Electrical schematics

30/34

Figure 10. MCU
SB17
U2
A0
A1

VCP_TX
A7
A2

6
7
8
9
10
11
12
13
18
19
20
21
22
23
24
25

PA0
PA1

PA2
PA3
A3
A4
A5
A6
D9
D1
D0
D10
D2

PA4
PA5
PA6
PA7
PA8
PA9
PA10
PA11
PA12
PA13
PA14
PA15

SWDIO
SWCLK
VCP_RX

2
3

SB4

MCO

PA0
PA1
PA2
PA3
PA4
PA5
PA6
PA7
PA8
PA9
PA10
PA11
PA12
PA13
PA14
PA15

PB0
PB1/NPOR
PB2/VSS2
PB3
PB4
PB5
PB6
PB7
PB8/VSS3
VDD3
VDD2/VDD_USB
VDDA/VREF+
NRST

PF0/PC14
PF1/PC15

BOOT0/PB8/PH3

14
15
16
26
27
28
29
30
32

PB0
PB1

PF0 /PC14
C12

VDD

PB3
PB4
PB5
PB6
PB7

D13
D12
D11
D5
D4

C7
100nF

C23
100nF

C24
100nF

SB13

1
17
5

AVDD
L1

4

NRST

VDD
SB10

B1

BEAD

KSS221G

31
SB12

BOOT0
C11

R21
10K

SB6

100nF

SB5
4.3pF

AVDD

SB11

MCU_LQFP32/QFN32
D7

D3
D6

closed for L021, L031,L433
open for F042,F031,F303

NRST

X1
NX3215SA-32.768K-EXS0
0
NX3215SA-32.768K-EXS00A-MU00525

C13
SB7

DocID028406 Rev 3

4.3pF
D8

Extension connectors

PF1 /PC15

SB8
VIN +5V +3V3
CN3

Vin

Vout
Tab

C25
10uF

1

C22
10uF(25V)

D3

BAT60JFILM

R22
1K
LD2
RED

1

C14
1uF_X5R_0603

C8
100nF

VI
EN

VO
PG

GND

6

VO
NC

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15

NRST
A7
A6
A5
A4
A3
A2
A1
A0
AREF

PA2
PA7
PA6
PA5
PA4
PA3
PA1
PA0

D13

PB3

+3V3
SB15

VDD
SB14

5

JP1

R23

PH127H10102JNG-2/3/1.5
C9
1uF_X5R_0603

PB6
PB7

Header 15X1_male

3
4

SB16
SB18
AVDD

2

U3
LD39050PU33R

+5V

GND

D4

0

U5V_ST_LINK

PA12
PB0
PB7
PB6
PB1
PF0
PF1
PA8
PA11
PB5
PB4

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15

Header 15X1_male

STPS2L30A

2

E5V

D2
D3
D4
D5
D6
D7
D8
D9
D10
D11
D12

E5V
2
4

CN4

LD3
Green

1

3

PA9
PA10
NRST

Arduino Connector

U6
LD1117S50TR

VIN

D1
D0

510

C10
100nF

Title: MCU
Project: NUCLEO32
Size: A4

Reference: MB1180

Date: 10/12/2015

Revision: C.2
Sheet: 2 of 3

UM1956

E5V

10K

R10

2K7

4K7

SB1

100K
PWR_EXT

Board Ident: PC13=0

+3V3_ST_LINK

R13 10K[N/A]

C2
100nF

USB_RENUMn
STM_JTCK

R16

+3V3_ST_LINK
R6

R11

UM1956

Figure 11. ST-LINK/V2-1

TCK/SWCLK
TMS/SWDIO

T_JTCK
T_JTMS
T_NRST
T_SWO

TCK
TMS
NRST
SWO

SB9

C5
100nF

SWD

STM_JTMS
STM_JTCK

1
3
5

36
35
34
33
32
31
30
29
28
27
26
25

COM

+3V3_ST_LINK
STM_JTMS
USB_DP
USB_DM
T_SWO
LED_STLINK

STLINK_RX

100

PWR_ENn

MCO

MCO

T_JTMS
T_JTCK

R20
100
U5V
U1
ST890CDR
R15
10K

1
2

C6
4.7uF

U5V

8

1050170001

VBUS
DM
DP
ID
GND
Shield
Shield
Shield
Shield
EXP
EXP

1K5

R2

100K

USB_DM
USB_DP

FAULT

SET

ON

GND

6
7

C1
100nF

5
R7
2.7K

4

Ilim = 510mA
Isc= 1.2Ilim to 1.5Ilim = 612mA
to 765mA

D2

R8
R3
36K

OUT
OUT

E5V

R4
10K

3
6
7
8
9
10
11

R1

1

1
2
3
4
5

U5V_ST_LINK

IN
IN

PWR

BAT60JFILM
D1

100 USB_RENUMn

U4 LD3985M33R

1

U5V

3

BAT60JFILM

C18
1uF_X5R_0603

Vin
INH
GND

C15
100nF

Vout

BYPASS

+3V3_ST_LINK
5
C16
1uF_X5R_0603

C17
10nF_X7R_0603

C19
100nF

Title: STLINK/V2-1
Project: NUCLEO32
Size: A4

Reference: MB1180

Date: 10/12/2015

Revision: C.2
Sheet: 3 of 3

31/34

Electrical schematics

USB_Micro-B receptacle

CN1

+3V3_ST_LINK

0
_Green

T_SWDIO_IN

+3V3_ST_LINK

2

4 R17

3

LD_BICOLOR_CMS

+3V3_ST_LINK

T1
9013

1

100

3

U5V

R19

LED_STLINK

C3
20pF[N/A]
R5

Red

2

100

SB2

USB ST-LINK

R18

4

T_JTCK
T_JTDO
T_JTDI
T_NRST

SB3

STLK_RX

LD1

VDD_2
VSS_2
JTMS/SWDIO
PA12
PA11
PA10
PA9
PA8
PB15
PB14
PB13
PB12

T_JRST

STLK_TX

[N/A]

13
14
15
16
17
18
19
20
21
22
23
24

STLINK_TX

DocID028406 Rev 3

VBAT
PC13
PC14
PC15
OSCIN
OSCOUT
NRST
VSSA
VDDA
PA0
PA1
PA2

2
4

U5
STM32F103CBT6

2

1
2
+3V3_ST_LINK 1
2
3
NX3225GD 8MHz EXS00A-CG04874
R9
4
5
100K
OSC_IN
6
OSC_OUT
7
STM_RST
8
9
+3V3_ST_LINK
C4
R14
4K7
AIN_1 10
VO
11
100nF
12
R12
4K7

PA3
PA4
PA5
PA6
PA7
PB0
PB1
PB2/BOOT1
PB10
PB11
VSS_1
VDD_1

C21
10pF
X2

VDD_3
VSS_3
PB9
PB8
BOOT0
PB7
PB6
PB5
PB4/JNTRST
PB3/JTDO
PA15/JTDI
JTCK/SWCLK

48
47
46
45
44
43
42
41
40
39
38
37

+3V3_ST_LINK

C20
10pF

+3V3_ST_LINK

CN2

SWDIO
SWCLK

Compliance statements

Appendix A

UM1956

Compliance statements

A.1

Federal Communications Commission (FCC) and Industry
Canada (IC) Compliance Statements

A.1.1

FCC Compliance Statement
Part 15.1933
This device complies with Part 15 of the FCC Rules. Operation is subject to the following
two conditions: (1) this device may not cause harmful interference, and (2) this device must
accept any interference received, including interference that may cause undesired
operation.

Part 15.105
This equipment has been tested and found to comply with the limits for a Class B digital
device, pursuant to part 15 of the FCC Rules. These limits are designed to provide
reasonable protection against harmful interference in a residential installation. This
equipment generates uses and can radiate radio frequency energy and, if not installed and
used in accordance with the instructions, may cause harmful interference to radio
communications. However, there is no guarantee that interference will not occur in a
particular installation. If this equipment does cause harmful interference to radio or
television reception, which can be determined by turning the equipment off and on, the user
is encouraged to try to correct the interference's by one or more of the following measures:
•

Reorient or relocate the receiving antenna.

•

Increase the separation between the equipment and the receiver.

•

Connect the equipment into an outlet on a circuit different from that to which the
receiver is connected.

•

Consult the dealer or an experienced radio/TV technician for help.

Part 15.21
Any changes or modifications to this equipment not expressly approved by
STMicroelectronics may cause harmful interference and void the user's authority to operate
this equipment.

A.1.2

IC Compliance Statement
Compliance Statement
Industry Canada ICES-003 Compliance Label: CAN ICES-3 (B)/NMB-3(B).

Déclaration de conformité
Étiquette de conformité à la NMB-003 d'Industrie Canada : CAN ICES-3 (B)/NMB-3(B).

32/34

DocID028406 Rev 3

UM1956

8

Revision history

Revision history
Table 14. Document revision history
Date

Revision

Revision Details

14-Oct-2015

1

Initial version.

21-Mar-2016

2

Update to introduce NUCLEO-L011K4. Updated Section :
Introduction, Section 1: Features,Section 3: Ordering
information, Section 6: Hardware layout and configuration.
Added Section Appendix A: Compliance statements.

30-Jun-2016

3

Updated Section : Introduction, Section 3: Ordering information
and Table 13: Arduino Nano connectors on NUCLEO-L432KC
to add NUCLEO-L432KC.

DocID028406 Rev 3

33/34
33

UM1956

IMPORTANT NOTICE – PLEASE READ CAREFULLY
STMicroelectronics NV and its subsidiaries (“ST”) reserve the right to make changes, corrections, enhancements, modifications, and
improvements to ST products and/or to this document at any time without notice. Purchasers should obtain the latest relevant information on
ST products before placing orders. ST products are sold pursuant to ST’s terms and conditions of sale in place at the time of order
acknowledgement.
Purchasers are solely responsible for the choice, selection, and use of ST products and ST assumes no liability for application assistance or
the design of Purchasers’ products.
No license, express or implied, to any intellectual property right is granted by ST herein.
Resale of ST products with provisions different from the information set forth herein shall void any warranty granted by ST for such product.
ST and the ST logo are trademarks of ST. All other product or service names are the property of their respective owners.
Information in this document supersedes and replaces information previously supplied in any prior versions of this document.
© 2016 STMicroelectronics – All rights reserved

34/34

DocID028406 Rev 3



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Producer                        : Acrobat Distiller 9.0.0 (Windows)
Title                           : STM32 Nucleo-32 board
Keywords                        : Technical Literature, 028406, Product Development, Specification, User manual, NUCLEO-F042K6, NUCLEO-F031K6, NUCLEO-F303K8, NUCLEO-L031K6, NUCLEO-L011K4, NUCLEO-L432KC
Modify Date                     : 2016:06:30 14:24:13Z
Subject                         : -
Author                          : STMICROELECTRONICS
Create Date                     : 2016:06:30 14:24:13Z
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