STMicroelectronics STM32G071GBU3

Overview

STM32G071GBU3 from STMicroelectronics is a 32-bit Arm® Cortex®-M0+ microcontroller with 128 KB Flash, 36 KB SRAM, dual 12-bit DACs, 12-bit ADC (0.4 µs conversion), and USB Type-C™ Power Delivery controller - deployed in industrial sensor nodes, smart metering front-ends, and low-power HMI control modules.

For engineers reviewing the STM32G071GBU3 datasheet, STM32G071GBU3 pinout, STM32G071GBU3 application, or STM32G071GBU3 equivalent, key selection criteria include its 64 MHz max CPU frequency, 1.7–3.6 V supply range, -40°C to 125°C extended temperature grade, and integrated USB-C PD controller for source/sink negotiation in compact power-aware embedded systems.

Technical Context

The STM32G071GBU3 implements an Arm Cortex-M0+ core with Memory Protection Unit (MPU), supporting deterministic real-time execution and secure code isolation. It integrates a 128 MHz-capable advanced timer (TIM1) for motor control and two low-power timers (LPTIM1/LPTIM2) enabling sub-microamp wake-up from Stop/Standby modes.

Clock architecture includes dual crystal oscillators (4–48 MHz HSE + 32 kHz LSE with calibration), plus factory-trimmed internal RC sources (16 MHz ±1%, 32 kHz ±5%). Its peripheral interconnect supports flexible DMA mapping across 7 channels and concurrent operation of four USARTs - two with ISO7816/LIN/IrDA support and auto-baud detection.

Key Specifications

Pinout & Package

STM32G071GBU3 is housed in a 48-pin UFQFPN package (7 × 7 mm, 0.5 mm pitch), RoHS-compliant and ECOPACK2 certified. Pin functions are validated per ST's DS12232 Rev 5, Section 4 (Pinouts and Alternate Functions).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar microcontroller applications.

Compared with STM32G071GBU3, STM32G0B1RET6 offers scalable memory headroom within the same architecture, while STM32G431KBU6 trades USB-C PD functionality for floating-point performance - making the G071GBU3 optimal for space-constrained, power-negotiation–centric designs.

Availability

STM32G071GBU3 is available at Aetrix Electronics and suitable for industrial sensor nodes, smart energy meter front-ends, and low-power HMI control modules requiring stable component supply across extended temperature and long-lifecycle deployments.

Supply support for STM32G071GBU3 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 components for industrial, automotive, and consumer markets.

The STM32G0 series targets cost-sensitive, ultra-low-power embedded applications demanding robust security, rich analog integration, and simplified USB-C power management - positioning it between legacy 8-bit MCUs and higher-end Cortex-M4 devices.

FAQ

What is the maximum operating frequency and voltage range of the STM32G071GBU3?

The STM32G071GBU3 operates at up to 64 MHz with a supply voltage range of 1.7 V to 3.6 V. Its internal 16 MHz RC oscillator is factory-trimmed to ±1% accuracy and can be boosted via PLL to achieve full-speed operation without external crystals - ideal for cost-sensitive designs where clock precision is secondary to startup reliability.

Does the STM32G071GBU3 support hardware cryptographic acceleration?

No, the STM32G071GBU3 does not include dedicated cryptographic accelerators such as AES or SHA engines. It relies on software libraries for encryption, though its readout protection (RDP) level 1 and securable Flash area provide basic firmware confidentiality and anti-cloning features suitable for non-regulated industrial applications.

Can the USB-C Power Delivery controller operate independently of the main CPU?

Yes - the USB-C PD controller has autonomous state machine operation and can negotiate power contracts (e.g., 5 V/3 A, 9 V/2 A) using only the CC1/CC2 pins and internal regulators, even when the Cortex-M0+ core is in Stop or Standby mode. This enables "always-on" power negotiation without waking the main processor.

What packaging and thermal specifications apply to the UFQFPN48 variant?

The STM32G071GBU3 uses a 48-pin UFQFPN package (7 × 7 mm, 0.5 mm pitch) with θ_JA = 42 °C/W (JEDEC standard board). Its maximum junction temperature is 125°C, and it supports operation from -40°C to +125°C ambient - verified per ST's DS12232 Rev 5, Section 6.7 and Table 20.