STMicroelectronics NUCLEO-G431RB

Overview

NUCLEO-G431RB from STMicroelectronics is an STM32 Nucleo-64 development board built around the STM32G431RBT6 32-bit Arm® Cortex®-M4F microcontroller in LQFP64 package, featuring 128 KB Flash, 32 KB SRAM, FPU, and operating up to 170 MHz. It integrates ST-LINK/V3E debugger/programmer via USB Micro-B, includes a 32.768 kHz crystal oscillator, ARDUINO® Uno V3 and ST morpho expansion headers, and supports USB full-speed device mode.

For engineers reviewing the NUCLEO-G431RB datasheet, NUCLEO-G431RB pinout, NUCLEO-G431RB application, or NUCLEO-G431RB equivalent, this board serves as a production-ready prototyping platform for motor control, digital power conversion, and sensor fusion applications requiring real-time computation, analog signal conditioning, and low-power operation with on-board debug capability.

Technical Context

The NUCLEO-G431RB implements the STM32G4 series architecture optimized for high-efficiency digital power and motor control, integrating dual ADCs (12-bit, 2.4 MSPS), three ultra-fast comparators, two operational amplifiers, and advanced timers with dead-time insertion and complementary outputs. Its Cortex-M4F core includes single-precision floating-point unit and DSP instructions for real-time control loop execution.

Power management includes flexible supply options-ST-LINK USB VBUS or external 5 V/3.3 V-and supports low-power modes (Stop2, Standby) with wake-up from multiple sources. The board's MIPI® debug connector enables high-bandwidth trace and debug sessions beyond standard SWD.

Key Specifications

Availability

NUCLEO-G431RB is available at Aetrix Electronics and suitable for motor control prototyping, digital power supply design, and industrial sensor interface development requiring stable component supply, rapid evaluation cycles, and seamless IDE integration.

Supply support for NUCLEO-G431RB includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

STMicroelectronics is a global semiconductor leader headquartered in Geneva, Switzerland, designing and manufacturing microcontrollers, analog ICs, power devices, and sensors for automotive, industrial, and consumer markets.

The STM32 Nucleo-64 platform-including NUCLEO-G431RB-is engineered to accelerate embedded firmware development for resource-constrained, real-time applications leveraging Arm Cortex-M cores, with emphasis on motor control, digital power, and intelligent sensing.

FAQ

Does NUCLEO-G431RB support USB device functionality?

Yes, NUCLEO-G431RB supports USB 2.0 Full-Speed device mode via the integrated STM32G431RBT6 MCU. It connects through the ST-LINK USB Micro-B port and enumerates as a Virtual COM port and mass storage device when used with STM32CubeIDE or compatible toolchains. No external transceiver or level-shifting circuitry is required.

What IDEs are officially supported for NUCLEO-G431RB?

NUCLEO-G431RB is fully supported by STM32CubeIDE (free, cross-platform), IAR Embedded Workbench® for Arm (Windows only), and Keil MDK-ARM (with free license for Cortex-M0/M0+ and paid for M4). All include preconfigured project templates, CMSIS-DSP libraries, and HAL/LL driver support for the STM32G431RBT6.

Can the on-board ST-LINK/V3E debug probe be used with other STM32 targets?

Yes, the ST-LINK/V3E on NUCLEO-G431RB can be used as an external debugger for other STM32 boards via SWD connection using the ST morpho header's SWCLK/SWDIO pins. The probe firmware is upgradable via STM32CubeProgrammer, and it supports JTAG/SWD, trace, and power measurement features when configured externally.

Is external SMPS support available on NUCLEO-G431RB?

No, NUCLEO-G431RB does not include external SMPS hardware or dedicated connectors for SMPS experimentation. Unlike NUCLEO-L4x2RB-P or NUCLEO-U385RG-Q variants, it relies on linear regulation from USB or external 5 V/3.3 V input. The target MCU lacks internal SMPS controller logic, and no SMPS-related jumpers or footprints are present on the MB1367 board layout.