STMicroelectronics STM32G051C8U7TR

Overview

STM32G051C8U7TR from STMicroelectronics is a 32-bit Arm® Cortex®-M0+ microcontroller in UFQFPN28 package, operating up to 64 MHz with 64 KB Flash, 18 KB SRAM, and integrated peripherals including two USARTs, two SPIs, two I²C interfaces, 12-bit ADC (16-channel), dual 12-bit DACs, and calendar RTC - deployed in industrial sensor nodes requiring low-power operation and secure firmware execution.

For engineers reviewing the STM32G051C8U7TR datasheet, STM32G051C8U7TR pinout, STM32G051C8U7TR application, or STM32G051C8U7TR equivalent, key selection criteria include Flash/RAM size, 28-pin UFQFPN footprint compatibility, 1.7–3.6 V supply range, -40°C to 125°C extended temperature grade, and support for SWD debug and hardware CRC acceleration.

Technical Context

The device implements an Arm Cortex-M0+ core with MPU, supporting TrustZone-like memory protection via readout protection (RDP) and securable flash area. Its clock system integrates 4–48 MHz HSE, 32 kHz LSE with calibration, and internal 16 MHz/32 kHz RC oscillators with PLL multiplication.

Peripherals are interconnected via AHB/APB buses with flexible DMA mapping; analog subsystem includes rail-to-rail comparators, temperature sensor, VREFINT, and VBAT monitoring - enabling autonomous low-power sensing and wake-up from Stop/Standby modes using LPUART or RTC alarms.

Key Specifications

Pinout & Package

STM32G051C8U7TR uses the UFQFPN28 (A0B0) package: 28-pin, 4 mm × 4 mm, 0.5 mm pitch, exposed thermal pad. Pin functions validated per ST's DS13303 Rev 4, 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 STM32G051C8U7TR, STM32G071CBT6 offers greater memory and USB capability at the expense of larger footprint and higher cost, while STM32G031F8P6 trades memory and I/O for compactness and price - making the G051C8U7TR optimal for balanced performance, size, and extended temperature resilience.

Availability

STM32G051C8U7TR is available at Aetrix Electronics and suitable for industrial sensor nodes, smart metering endpoints, motor control actuators, and medical wearable monitors requiring stable component supply across long-lifecycle production programs.

Supply support for STM32G051C8U7TR 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, designing and manufacturing microcontrollers, power ICs, MEMS, and automotive-grade components with emphasis on energy efficiency and functional safety.

The STM32G0 series targets cost-sensitive, low-power embedded applications demanding Arm Cortex-M0+ performance, robust security features, and seamless integration of analog/mixed-signal peripherals - optimized for industrial automation and consumer IoT edge devices.

FAQ

What is the maximum operating frequency and supported voltage range?

The STM32G051C8U7TR operates at up to 64 MHz using its internal 16 MHz RC oscillator with PLL or external crystal sources. It supports a supply voltage range of 1.7 V to 3.6 V, enabling direct use with single-cell Li-ion batteries (2.7–4.2 V with regulator) or 3.3 V system rails. The device maintains full functionality across this range, including ADC accuracy and timer resolution, as verified in DS13303 Rev 4 Section 5.3.

Does it support hardware encryption or secure boot features?

The STM32G051C8U7TR does not integrate AES or hash accelerators, but provides foundational security through readout protection (RDP) levels, securable flash area, and write protection for option bytes. Bootloader authentication must be implemented in software using the 96-bit unique ID and external secure elements; secure boot is not natively supported in ROM.

How many I²C interfaces are available and what are their speed capabilities?

This MCU includes two I²C-bus interfaces: one supports Fast-mode Plus (1 Mbit/s) with extra current sink for driving higher bus capacitance, and the other supports SMBus/PMBus and wakeup from Stop mode. Both interfaces operate with standard, fast, and Fast-mode Plus timing; no I²C address arbitration or clock stretching limitations are imposed beyond those defined in the I²C specification.

What debug interface is supported and are external pull-ups required?

The STM32G051C8U7TR supports Serial Wire Debug (SWD) only - no JTAG. SWDIO and SWCLK pins require external 10 kΩ pull-up resistors to VDD for reliable enumeration and programming; these are mandatory per ST Application Note AN5289. No additional debug probe firmware or licensing is needed for OpenOCD or ST-Link v2/v3 compatibility.