Skip to main content
Log in
STMicroelectronics STM32F051C4U6 — Microcontrollers & Processors (MCU / MPU / DSP)

ST STM32F051C4U6 ARM Cortex-M0 MCU, 48MHz, 16KB Flash

MPNSTM32F051C4U6
Active

STMicroelectronics STM32F0 series, ARM® Cortex®-M0 32-bit MCU, 48MHz, 16KB Flash, 8KB RAM, 48-UFQFPN (7x7), -40 to 85°C.

$1.9130Ref. price · indicative, final on quote
STMicroelectronics STM32F051C4U6 datasheet (PDF)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

STM32F051C4U6 specifications
ParameterValue
SeriesSTM32F0
MountingSurface Mount
Oscillator typeInternal
Program memory typeFLASH
Voltage - supply (Vcc (Vdd))2V ~ 3.6V
Operating temperature-40°C ~ 85°C (TA)
Speed48MHz
PackageTray
RAM size8K x 8
Core size32-Bit Single-Core
PeripheralsDMA, I²S, POR, PWM, WDT
ConnectivityHDMI-CEC, I²C, IrDA, LINbus, SPI, UART/USART
Number of i (O)39
Core processorARM® Cortex®-M0
Case48-UFQFN Exposed Pad
Data convertersA/D 13x12b; D/A 1x12b
Program memory size16KB (16K x 8)

Product details

The STMicroelectronics STM32F051C4U6 is a 32-bit ARM Cortex-M0 microcontroller from the STM32F0 value-line family, clocked at 48 MHz with 16 KB of Flash and 8 KB of RAM. It packs a 12-bit ADC (13 channels), a single 12-bit DAC, and peripherals including SPI, I²C, USART, I²S, and HDMI-CEC — enough for sensor fusion, motor control feedback, or IoT node processing in a 7x7 mm UFQFPN package.

The STM32F051C4U6 is marked end-of-life (EOL). The base product number STM32F051 has a range of density options that share the same pinout and peripheral set.

Frequently asked questions

What is the closest pin-compatible alternative to STM32F051C4U6?

Within the STM32F051 family, the C6 (32 KB Flash) and C8 (64 KB Flash) variants share the same 48-UFQFPN footprint, pinout, and peripheral set. If your firmware fits the larger Flash, either is a drop-in hardware replacement without a PCB change.

What is STM32F051C4U6's listed speed?

The core runs at 48 MHz, which is the maximum clock for this Cortex-M0 implementation in the STM32F0 series.

What series is STM32F051C4U6 from?

It belongs to the STM32F0 series, ST's entry-level 32-bit ARM Cortex-M0 line.