STMicroelectronics STM32F051C8U7

Overview

STM32F051C8U7 from STMicroelectronics is a 32-bit ARM Cortex-M0 microcontroller with 64 KB Flash, 8 KB SRAM, 48 MHz max CPU frequency, integrated 12-bit ADC and DAC, and dual USART/I²C/SPI interfaces - deployed in industrial sensor nodes, motor control edge modules, and smart metering front-ends requiring low-power real-time processing.

For engineers reviewing the STM32F051C8U7 datasheet, STM32F051C8U7 pinout, STM32F051C8U7 application, or STM32F051C8U7 equivalent, key selection criteria include its 5 V-tolerant I/O count (up to 36), 1.0 µs ADC conversion time, RTC with periodic wakeup from Stop mode, and SWD debug interface compatibility with ST-LINK v2/v3.

Technical Context

The STM32F051C8U7 implements a single-cycle ARM Cortex-M0 core with Harvard bus architecture, supporting Thumb-2 instruction set and NVIC with 32 interrupt lines. It integrates a programmable voltage detector (PVD), hardware CRC unit, and memory protection unit (MPU) for secure boot and runtime integrity verification.

Clock management includes dual oscillators: a 4–32 MHz HSE crystal input and internal 8 MHz HSI RC with x6 PLL for precise 48 MHz system clock generation; analog subsystem uses independent VDDA supply (2.4–3.6 V) decoupled from digital VDD (2.0–3.6 V).

Key Specifications

Pinout & Package

STM32F051C8U7 is housed in a 48-pin UFQFPN package (7 × 7 mm, 0.5 mm pitch), optimized for space-constrained industrial PCBs with exposed thermal pad for enhanced heat dissipation.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STM32F051C8U7, the F030F4P6 lacks DAC and touch sensing - limiting use in analog-output or HMI applications - while the G031F8P6 offers USB and stronger GPIOs but requires toolchain migration and lacks legacy ecosystem alignment.

Availability

STM32F051C8U7 is available at Aetrix Electronics and suitable for industrial motor control, smart metering, IoT sensor nodes, and human-machine interface applications requiring stable component supply across multi-year production cycles.

Supply support for STM32F051C8U7 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, specializing in microcontrollers, power management, MEMS, and automotive ICs with ISO 9001-certified manufacturing.

The STM32F0 series targets cost-sensitive, ultra-low-power embedded applications demanding Cortex-M0 performance, integrated analog peripherals, and robust industrial qualification (–40°C to +85°C).

FAQ

What is the maximum operating temperature range for STM32F051C8U7?

The STM32F051C8U7 is qualified for industrial temperature range: –40°C to +85°C. This rating is validated per JEDEC JESD47 and applies to all electrical specifications in the datasheet under specified VDD and load conditions. Thermal derating is not required within this range.

Does STM32F051C8U7 support in-application programming (IAP)?

Yes - the device supports IAP via its built-in system memory bootloader, accessible through USART1 (using BOOT0 pin configuration). Users can reprogram Flash sectors while running application code, enabling over-the-air firmware updates without external programmers.

Can the internal 12-bit DAC drive a 1 kΩ load directly?

No - the DAC output is specified for ≤60 µA load current. Driving a 1 kΩ load at 3.3 V would require 3.3 mA, exceeding DAC capability. An external op-amp buffer is required for such loads to maintain linearity and settling time specs.

Is the UFQFPN48 package RoHS and REACH compliant?

Yes - STM32F051C8U7 in UFQFPN48 packaging meets RoHS Directive 2011/65/EU and REACH Regulation (EC) No. 1907/2006. ST's official material declaration (MD-00020838) confirms lead-free terminations and halogen-free molding compound.