ST NUCLEO-G431RB User Manual

Introduction
The STM32G4 Nucleo-64 boards based on the MB1367 reference board (NUCLEO-G431RB, NUCLEO-G474RE, NUCLEO-
G491RE) provide an affordable and flexible way for users to try out new concepts and build prototypes with the STM32G4
Series microcontrollers, choosing from the various combinations of performance, power consumption and features. The
ARDUINO
®
Uno V3 connectivity and the ST morpho headers provide an easy means of expanding the functionality of the
Nucleo open development platform with a wide choice of specialized shields. The STM32G4 Nucleo-64 boards do not require
any separate probe as they integrate the STLINK-V3E debugger/programmer. The STM32G4 Nucleo-64 boards come with the
comprehensive free software libraries and examples available with the STM32CubeG4 MCU Package.
Figure 1. NUCLEO-G474RE top view
Figure 2. NUCLEO-G474RE bottom view
Pictures are not contractual.
STM32G4 Nucleo-64 boards (MB1367)
UM2505
User manual
UM2505 - Rev 3 - November 2020
For further information contact your local STMicroelectronics sales office.
www.st.com

ST NUCLEO-G431RB Specifications

General

Microcontroller	STM32G431RB
Core	ARM Cortex-M4
Flash Memory	128 KB
SRAM	32 KB
Clock Speed	170 MHz
Digital I/O Pins	51
Analog Input Channels	16
DAC Channels	2
On-board Debug	ST-LINK/V2-1
Extension Headers	Arduino Uno V3, ST morpho
Communication Interfaces	I2C, SPI, UART
USB	USB 2.0 Full Speed
ADC	12-bit

Summary

Features

Ordering Information

Development Environment

Development Toolchains

Lists the supported Integrated Development Environments (IDEs) for development.

Quick Start

Getting Started

Step-by-step guide to configure the board and launch the demonstration application.

Hardware Layout and Configuration

Embedded STLINK-V3E

STLINK-V3E Firmware Upgrade

Guidance on upgrading the firmware for the onboard STLINK-V3E debugger.

Using an External Debug Tool to Program and Debug the On-board STM32

Instructions for using external debug tools via the MIPI10 connector.

Power Supply

External Power Supply Input from VIN (7 V - 12 V, 800 mA max)

Details how to power the board using an external VIN source.

External Power Supply Input from E5V (5 V, 500 mA max)

Details how to power the board using an external E5V source.

External Power Supply Input from USB Charger (5 V)

Details how to power the board using an external USB charger.

External Power Supply Input from External 3.3 V

Details how to power the board using an external 3.3V source.

Debugging While Using VIN or EXT as an External Power Supply

Procedure for debugging when using external power sources like VIN or E5V.

Clock Sources

Board Functions

LEDs

Description of the board's LEDs (LD1, LD2, LD3, LD4) and their functions.

Push-buttons

Information on the board's user (B1) and reset (B2) push-buttons.

MCU Voltage Selection on VREF+

How to select the voltage supply for the MCU's VREF+ input.

Virtual COM Port (VCP): LPUART and USART

Board Connectors

STLINK-V3E USB Micro-B Connector CN1

MIPI10 Connector CN4

ARDUINO® Uno V3 Connectors CN5, CN6, CN8 and CN9

ST Morpho Connectors CN7 and CN10

STM32G4 Nucleo-64 I/O Assignment