STMicroelectronics STM32F051C6T7

Overview

STM32F051C6T7 from STMicroelectronics is a 32-bit ARM Cortex-M0 microcontroller in LQFP48 package, featuring 32 KB Flash, 8 KB SRAM with hardware parity, 48 MHz max CPU frequency, one 12-bit ADC (1.0 µs conversion), one 12-bit DAC, and dual USARTs with LIN/IrDA support. It targets cost-sensitive industrial control, smart sensors, and power management modules requiring integrated analog peripherals and low-power operation.

For engineers reviewing the STM32F051C6T7 datasheet, STM32F051C6T7 pinout, STM32F051C6T7 application, or STM32F051C6T7 equivalent, key selection criteria include Flash/SRAM size, 5 V-tolerant I/O count (up to 36), RTC with alarm, capacitive touch sensing capability (up to 18 channels), and dual I²C interfaces with Fast Mode Plus (1 Mbit/s).

Technical Context

The STM32F051C6T7 implements an ARM Cortex-M0 core with Harvard architecture, supporting Thumb-2 instruction set and NVIC for deterministic interrupt handling. Its memory subsystem includes 32 KB of single-cycle Flash with prefetch buffer and 8 KB SRAM with hardware parity checking for safety-critical data integrity.

Clock management integrates multiple sources: 4–32 MHz external crystal, 32 kHz LSE for RTC, 8 MHz HSI with PLL (×6 → 48 MHz), and 40 kHz LSI for watchdogs. Power architecture supports three low-power modes (Sleep, Stop, Standby) with VBAT backup for RTC and registers, and programmable voltage detector (PVD) for brown-out monitoring.

Key Specifications

Pinout & Package

LQFP48 (7 × 7 mm, 0.5 mm pitch), RoHS-compliant ECOPACK®2 package with exposed thermal pad (not electrically connected). Pinout validated per STMicroelectronics DocID022265 Rev 7, Section 4.

Key Features

Applications

Equivalent & Alternatives

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

Compared with STM32F030F4P6, the STM32F051C6T7 adds DAC, TSC, and enhanced ADC resolution-critical for closed-loop analog control. Versus STM32F070F6P6, it sacrifices USB for superior analog integration and deterministic timing via dedicated advanced timer resources.

Availability

STM32F051C6T7 is available at Aetrix Electronics and suitable for industrial motor control, smart sensor nodes, power supply monitoring, and home appliance UIs requiring stable component supply across long-lifecycle production programs.

Supply support for STM32F051C6T7 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 devices, sensors, and analog ICs for industrial, automotive, and consumer markets.

The STM32F0 series targets cost-sensitive, resource-constrained embedded applications requiring robust analog integration, low-power operation, and ARM Cortex-M0 software compatibility - optimized for appliances, industrial controls, and IoT edge nodes.

FAQ

What is the maximum operating frequency and supported voltage range?

The STM32F051C6T7 operates at up to 48 MHz using its internal 8 MHz HSI oscillator with PLL multiplication or an external 4–32 MHz crystal. Its digital supply (VDD) ranges from 2.0 V to 3.6 V, while the analog supply (VDDA) accepts 2.4 V to 3.6 V - independent regulation ensures ADC/DAC accuracy across supply variations.

Does this MCU support hardware CRC calculation?

Yes, the STM32F051C6T7 includes a dedicated cyclic redundancy check (CRC) calculation unit compliant with IEEE-802.3. It computes 32-bit CRC over arbitrary data lengths in hardware, reducing CPU load during firmware updates, secure boot verification, or communication frame integrity checks.

How many I²C interfaces does it have, and what are their capabilities?

The device integrates up to two I²C interfaces. One supports Fast Mode Plus (1 Mbit/s) with 20 mA current sink capability, enabling reliable communication over longer traces or with higher bus capacitance. Both support SMBus/PMBus protocols and can wake the MCU from Stop mode upon address match.

Is there built-in support for capacitive touch sensing?

Yes, the STM32F051C6T7 includes a dedicated Touch Sensing Controller (TSC) supporting up to 18 capacitive sensing channels. It enables touchkey, linear, and rotary touch sensors with hardware-accelerated acquisition, automatic recalibration, and noise immunity - eliminating need for external touch ICs in HMI designs.