STMicroelectronics STM32G071C8U3

Overview

STM32G071C8U3 from STMicroelectronics is a 32-bit Arm® Cortex®-M0+ microcontroller in UFQFPN28 package, operating up to 64 MHz with 128 KB Flash and 36 KB SRAM. It integrates dual 12-bit DACs, 12-bit ADC (0.4 µs conversion), four USARTs (including ISO7816/LIN/IrDA), two I²C interfaces (Fast-mode Plus), two SPIs (32 Mbit/s), USB Type-C™ Power Delivery controller, and RTC with alarm/wakeup - deployed in industrial sensor nodes requiring low-power connectivity and analog signal conditioning.

For engineers reviewing the STM32G071C8U3 datasheet, STM32G071C8U3 pinout, STM32G071C8U3 application, or STM32G071C8U3 equivalent, key selection criteria include its 28-pin UFQFPN footprint, 1.7–3.6 V supply range, -40°C to 105°C extended temperature grade, dual DAC support for precision actuator control, and integrated USB PD controller for embedded power negotiation.

Technical Context

The STM32G071C8U3 implements an Arm Cortex-M0+ core with Memory Protection Unit (MPU) and supports multiple clock sources: 4–48 MHz HSE crystal, 32 kHz LSE with calibration, 16 MHz HSI (±1%), and 32 kHz LSI (±5%). Its interconnect architecture routes peripherals-including ADC, DAC, comparators, timers, and communication interfaces-via a multi-layer AHB/APB bus matrix with DMA channel mapping flexibility.

Power management includes programmable Brownout Reset (BOR), Programmable Voltage Detector (PVD), and four low-power modes (Sleep, Stop, Standby, Shutdown) with sub-μA RTC retention in VBAT mode. The device features 60 fast I/Os (multiple 5 V-tolerant), CRC calculation unit, 96-bit unique ID, and ECOPACK2-compliant packaging.

Key Specifications

Pinout & Package

STM32G071C8U3 uses the UFQFPN28 (4 × 4 mm) package with exposed thermal pad, compliant with ECOPACK2 environmental standards. Pin count is 28, with 25 user I/Os plus power/ground/reset/clock pins.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STM32G071K8T6, the C8U3 offers superior space efficiency and thermal performance in compact designs; versus STM32G031F8P6, it delivers full USB-C PD capability and dual DAC functionality essential for intelligent power and analog subsystems.

Availability

STM32G071C8U3 is available at Aetrix Electronics and suitable for industrial sensor nodes, smart meter interfaces, USB-C powered IoT gateways, and motor control edge nodes requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for STM32G071C8U3 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 products for industrial, automotive, and consumer markets.

The STM32G0 series targets cost-sensitive, ultra-low-power embedded applications demanding high integration, security features, and streamlined development - optimized for rapid time-to-market in industrial automation and smart infrastructure.

FAQ

What is the maximum operating frequency and supported voltage range?

The STM32G071C8U3 operates at up to 64 MHz using its Arm Cortex-M0+ core and supports a supply voltage range of 1.7 V to 3.6 V. This range accommodates both single-cell Li-ion battery systems (2.7–4.2 V with regulator) and standard 3.3 V industrial rails, with built-in BOR and PVD ensuring reliable operation across voltage transients.

Does this MCU support hardware encryption or secure boot?

Yes - the STM32G071C8U3 includes readout protection (RDP) levels, securable flash area, and memory protection unit (MPU) to enforce privilege separation. While it lacks dedicated AES hardware accelerators, its RDP Level 2 prevents debug access and flash readout, enabling secure firmware storage and authenticated boot via software-implemented cryptographic libraries.

How many USART interfaces does it have, and which support LIN or IrDA?

The STM32G071C8U3 integrates four USARTs; USART1 and USART2 support LIN physical layer (LINPHY) and IrDA modulation/demodulation. Both also feature auto baud-rate detection and wakeup-from-Stop capability - enabling robust automotive-grade serial communication without external transceivers.

Is the USB Type-C Power Delivery controller fully integrated, or does it require external components?

The USB Type-C PD controller is fully integrated, including the PD PHY, BMC decoder/encoder, and policy engine. Only external VBUS discharge resistors, CC line termination resistors (5.1 kΩ), and optional VCONN switch are required - no external PD controller IC or level shifters needed for basic sink/source negotiation.