STMicroelectronics STM32G051C8U3TR

Overview

STM32G051C8U3TR from STMicroelectronics is a 32-bit Arm® Cortex®-M0+ microcontroller in UFQFPN28 package, featuring 64 KB Flash, 18 KB SRAM, dual 12-bit DACs, 12-bit ADC with hardware oversampling, and operating voltage range of 1.7–3.6 V. It integrates two USARTs (one with LIN/IrDA), two I²C interfaces (Fast-mode Plus), two SPIs, RTC with alarm, and supports -40°C to 105°C industrial temperature range - deployed in smart sensor nodes and low-power industrial controllers.

For engineers reviewing the STM32G051C8U3TR datasheet, STM32G051C8U3TR pinout, STM32G051C8U3TR application, or STM32G051C8U3TR equivalent, key selection criteria include its 28-pin UFQFPN footprint, dual DAC support for analog actuation, 14-timer suite including LPTIMs for ultra-low-power wakeups, and integrated VREFBUF for precision DAC/ADC reference stability.

Technical Context

The STM32G051C8U3TR implements an Arm Cortex-M0+ core with MPU, running at up to 64 MHz via internal 16 MHz RC + PLL or external 4–48 MHz crystal. Its memory subsystem includes 64 KB flash with securable area and readout protection, plus 18 KB SRAM (16 KB with hardware parity).

Peripherals are interconnected via AHB/APB buses with DMAMUX routing; clock tree supports multiple sources (HSI16, HSE, LSE, LSI, MSI) with programmable PVD/BOR and four low-power modes (Sleep, Stop, Standby, Shutdown), enabling sub-μA operation with RTC/VBAT retention.

Key Specifications

Pinout & Package

STM32G051C8U3TR uses the UFQFPN28 (A0B0) package: 4 mm × 4 mm body, 0.5 mm pitch, 28 terminals, exposed thermal pad, RoHS-compliant ECOPACK2.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STM32G051C8U3TR, STM32G071CBT6 offers USB and scalability at the expense of size and power; STM32G031F8P6 trades features and analog capability for lowest cost and smallest footprint - making the G051C8U3TR the optimal balance of analog integration, low-power performance, and compact UFQFPN28 packaging.

Availability

STM32G051C8U3TR is available at Aetrix Electronics and suitable for smart metering, industrial sensor nodes, motor control modules, and medical handheld diagnostics requiring stable component supply across multi-year production cycles.

Supply support for STM32G051C8U3TR 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, sensors, and automotive-grade components with focus on energy efficiency and functional safety.

The STM32G0 series targets cost-sensitive, low-power embedded applications - delivering Cortex-M0+ performance with enhanced analog integration, security features, and industrial temperature reliability in compact packages.

FAQ

What is the maximum operating frequency and how is it achieved?

The STM32G051C8U3TR achieves 64 MHz maximum CPU frequency using its internal 16 MHz HSI oscillator combined with a programmable PLL multiplier. Alternatively, an external 4–48 MHz crystal (HSE) can be used as PLL input. The PLL output feeds the system clock, and all peripherals derive timing from this source with configurable prescalers - verified per DS13303 Rev 4 Section 3.9 and Table 43.

Does this MCU support hardware encryption or secure boot?

Yes - the STM32G051C8U3TR includes readout protection (ROP) Levels 1 and 2, securable flash area, and option bytes for boot configuration lock. While it lacks dedicated AES engines, its secure boot flow relies on ROP-enforced execution from protected flash and BOOT0-controlled vector table mapping - detailed in DS13303 Rev 4 Sections 3.5 and 3.3.1.

What are the key low-power mode capabilities and typical current draw?

In Shutdown mode, current draw is ≤100 nA (typ.) with RTC and backup registers active under VBAT; Stop 0 mode consumes ≤1.5 μA (typ.) with 16 KB SRAM retention and fast wakeup (<5 μs). These values are measured per DS13303 Rev 4 Tables 31 and 28, and depend on enabled peripherals and regulator settings.

Can the two DACs operate simultaneously with independent triggers?

Yes - both 12-bit DAC channels (DAC1 and DAC2) support independent software, timer, or external trigger initiation. They share the same reference (VREF+ or VREFBUF output) but have separate data holding registers and output buffers - enabling synchronized or staggered analog waveform generation as confirmed in DS13303 Rev 4 Section 3.15 and Table 62.