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STMicroelectronics NUCLEO-G431KB

Name: NUCLEO-G431KB
Brand: STMicroelectronics
SKU: NUCLEO-G431KB
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: NUCLEO-G431KB

Manufacturer:: STMicroelectronics

Category:: Embedded MCU, DSP Evaluation Boards

Package:

Datasheet:: NUCLEO-G431KB.pdf

Description:: NUCLEO-32 STM32G431KB EVAL BRD

Quantity:: RFQ Add To RFQ list

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Shipping:

Inventory:685

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Product details

Overview

NUCLEO-G431KB from STMicroelectronics is an STM32 Nucleo-32 development board built around the STM32G431KBT6 32-pin Arm Cortex-M4 microcontroller with 128 KB Flash, 32 MHz max CPU frequency, and integrated ST-LINK/V3E debugger/programmer. It features a 24 MHz crystal oscillator, ARDUINO Nano V3 expansion connector, Micro-AB USB interface, and one user LED for rapid prototyping of motor control, digital power, and sensor interface applications.

For engineers reviewing the NUCLEO-G431KB datasheet, NUCLEO-G431KB pinout, NUCLEO-G431KB application, or NUCLEO-G431KB equivalent, this board delivers out-of-box debug capability via mass storage, Virtual COM port, and SWD interfaces - all without external probes - and supports STM32CubeIDE, IAR Embedded Workbench, and Keil MDK-ARM toolchains across Windows, Linux, and macOS.

Technical Context

The NUCLEO-G431KB implements a full-featured evaluation platform for the STM32G4 series, leveraging the G431KBT6's dual-core timer architecture, advanced analog peripherals (including op-amps and comparators), and hardware-accelerated math functions for real-time control. Its ST-LINK/V3E firmware supports JTAG/SWD debugging, firmware flashing, and UART bridging over a single USB connection.

Board-level design integrates flexible power routing: VBUS from the Micro-AB USB connector powers both the target MCU and ST-LINK subsystem, while optional external supply inputs allow independent voltage domain testing. The 24 MHz crystal provides precise clock reference for timing-critical applications such as PWM generation and ADC sampling synchronization.

Key Specifications

Parameter	Value and Actual Design Meaning
Target MCU	STM32G431KBT6: 32-pin LQFP, Arm Cortex-M4F @ 170 MHz, 128 KB Flash, 32 KB SRAM
Debug Interface	Integrated ST-LINK/V3E: supports SWD/JTAG, Virtual COM port, mass storage programming, and debug port
Expansion Connector	ARDUINO Nano V3 pin-compatible header: exposes GPIO, ADC, SPI, I2C, and UART signals
Clock Source	24 MHz external crystal oscillator: enables high-accuracy system clock and precise PWM timing
USB Interface	Micro-AB USB connector: powers board and provides debug/programming interface; no external probe required
Power Options	Flexible supply: USB VBUS only, or external 5 V/3.3 V input via VIN/GND pins
User Peripherals	1 × user LED (LD2, green), 1 × reset push-button (B1)

Availability

NUCLEO-G431KB is available at Aetrix Electronics and suitable for industrial motor control prototyping, digital power supply design, sensor fusion validation, and educational embedded systems development requiring stable component supply and immediate out-of-box usability.

Supply support for NUCLEO-G431KB 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, power management ICs, sensors, and analog devices for industrial, automotive, and consumer applications.

The STM32 Nucleo-32 product line delivers compact, standardized evaluation platforms targeting rapid validation of STM32 microcontrollers - especially for space-constrained, cost-sensitive, and education-focused development workflows.

FAQ

Does the NUCLEO-G431KB support drag-and-drop firmware programming?

Yes. The onboard ST-LINK/V3E implements mass storage device (MSD) mode: users can compile firmware binaries (e.g., .bin files) and copy them directly to the virtual drive labeled "NUCLEO" that appears when the board is connected via USB. This eliminates the need for additional programming software during basic firmware updates.

Can the NUCLEO-G431KB be used to debug external STM32 targets?

Yes. The ST-LINK/V3E debugger supports external target debugging via SWD: the SWDIO and SWCLK signals are exposed on the ARDUINO Nano V3 header (pins D13 and D12 respectively), and the board's ST-LINK can be configured in "external probe" mode using STM32CubeProgrammer or STM32CubeIDE to program and debug other STM32 boards.

What is the purpose of the 24 MHz crystal oscillator on this board?

The 24 MHz crystal provides a stable, low-jitter clock source for the STM32G431KBT6's HSE (High-Speed External) oscillator input. It enables precise timing for high-resolution PWM, synchronized ADC conversions, and real-time control loops - critical for digital power and motor control applications where internal RC oscillators lack required accuracy.

Is the ARDUINO Nano V3 connector electrically compatible with standard Nano shields?

Yes. The NUCLEO-G431KB's ARDUINO Nano V3 connector maps STM32 GPIOs to the same pinout and voltage levels (3.3 V logic) as Arduino Nano R3. However, shield compatibility depends on software driver support: libraries written for ATmega328P may require porting to HAL or LL drivers for STM32 peripherals like timers, ADC, and SPI.

NUCLEO-G431KB Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Series:: STM32G4

Packaging:: Bulk

Product Status:: Active

Type:: MCU 32-Bit

Core Processor:: ARM® Cortex®-M4

Platform:: Nucleo-32

Utilized IC / Part:: STM32G431

Mounting Type:: Fixed

Contents:: Board(s)

NUCLEO-G431KB FAQ

1.How can I place an order for NUCLEO-G431KB through Aetrix?

Please submit a Request for Quotation (RFQ) for NUCLEO-G431KB on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for NUCLEO-G431KB reliable?

The price and inventory of NUCLEO-G431KB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NUCLEO-G431KB is usually 5 days.

3.What payment methods are accepted for NUCLEO-G431KB?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NUCLEO-G431KB transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for NUCLEO-G431KB?

NUCLEO-G431KB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your NUCLEO-G431KB order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for NUCLEO-G431KB?

For technical support, including NUCLEO-G431KB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NUCLEO-G431KB requirements.

6.How does Aetrix verify that NUCLEO-G431KB is sourced from the original manufacturer or authorized distributors?

All NUCLEO-G431KB products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that NUCLEO-G431KB meets industry standards.

7.What is the process for return or replacement of NUCLEO-G431KB?

All NUCLEO-G431KB units undergo pre-shipment inspection (PSI). If there is an issue with NUCLEO-G431KB, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The NUCLEO-G431KB part is unused and in its original packaging.

Return procedure for NUCLEO-G431KB:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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