STMicroelectronics NUCLEO-G071RB

Overview

NUCLEO-G071RB from STMicroelectronics is an STM32 Nucleo-64 development board built around the STM32G071RBT6 32-bit Arm® Cortex®-M0+ microcontroller in LQFP64 package, featuring 128 KB Flash, 36 KB SRAM, USB Full-Speed device interface, and integrated ST-LINK/V2-1 debugger/programmer via USB Micro-B connector. It supports Arduino Uno V3 and ST Morpho expansion headers for rapid prototyping of low-power embedded control applications.

For engineers reviewing the NUCLEO-G071RB datasheet, NUCLEO-G071RB pinout, NUCLEO-G071RB application, or NUCLEO-G071RB equivalent, this board delivers verified USB device connectivity, on-board debug capability without external probes, dual LED indicators, and compatibility with STM32CubeIDE, IAR EWARM, and Keil MDK toolchains - critical for firmware validation, peripheral bring-up, and production-ready firmware development.

Technical Context

The NUCLEO-G071RB implements a complete evaluation platform for the STM32G071RBT6 MCU, which integrates a 64 MHz Arm Cortex-M0+ core, advanced power management (Run mode down to 95 µA/MHz), and hardware accelerators for AES-128 and CRC. Its ST-LINK/V2-1 subsystem provides mass storage, Virtual COM port, and SWD debugging over a single USB Micro-B connection.

Board-level features include a 32.768 kHz crystal for RTC operation, user and reset push-buttons, dual LEDs (LD1 shared with Arduino, LD2 user-controlled), and flexible power options via ST-LINK VBUS or external 5 V/7–12 V sources. The ARDUINO® Uno V3 and ST Morpho headers expose all MCU GPIOs, ADC, timers, USART, I²C, SPI, and USB pins for shield-based expansion.

Key Specifications

Availability

NUCLEO-G071RB is available at Aetrix Electronics and suitable for industrial sensor nodes, smart home controllers, battery-powered IoT edge devices, and educational embedded systems requiring stable component supply and long-term toolchain support.

Supply support for NUCLEO-G071RB 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 ICs, sensors, and analog components for automotive, industrial, and consumer markets.

The STM32 Nucleo series was developed to accelerate embedded firmware development by delivering standardized, open-hardware evaluation platforms with unified software stacks (STM32Cube), enabling seamless migration across Cortex-M families from entry-level to high-performance.

FAQ

Does NUCLEO-G071RB support USB host functionality?

No. The NUCLEO-G071RB implements only USB Full-Speed device mode via the STM32G071RBT6's internal USB peripheral. It lacks external PHY or VBUS sensing circuitry required for host or OTG operation. Firmware must be configured as a USB device (e.g., CDC ACM, HID, or MSC) and enumerated by a host PC or embedded host controller.

Can I use the ST-LINK on NUCLEO-G071RB to debug external STM32 targets?

Yes. The ST-LINK/V2-1 on NUCLEO-G071RB supports external target debugging via SWD using the SWCLK/SWDIO pins exposed on the CN4 ST Morpho header (pins 21/23). No solder bridge modification is required - the default configuration routes SWD signals to the onboard MCU, but jumper SB12/SB13 can be opened and SB14/SB15 closed to redirect debug signals to the external header.

What is the maximum operating temperature range for reliable board operation?

The NUCLEO-G071RB operates reliably from –40 °C to +85 °C ambient, matching the industrial temperature grade of the STM32G071RBT6 MCU. This is validated under continuous operation with standard airflow and no forced cooling; thermal derating applies above 70 °C when running CPU-intensive workloads with all peripherals active.

Is the 32.768 kHz crystal mandatory for RTC operation?

Yes. The onboard 32.768 kHz crystal (Y2) is directly connected to the LSE pins of the STM32G071RBT6 and is required for accurate RTC timekeeping, calendar functions, and low-power wake-up modes (e.g., RTC alarm). The LSE oscillator cannot be bypassed or substituted with internal RC for precision timing - omission disables RTC calibration and sub-second accuracy.