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STMicroelectronics STM32L051C6U6 — Microcontrollers & Processors (MCU / MPU / DSP)

STM32L051C6U6 ARM Cortex-M0+ MCU, 32 MHz, 32 KB Flash

MPNSTM32L051C6U6
Active

ST STM32L0 series, ARM® Cortex®-M0+, 32-Bit Single-Core, 32MHz, 32KB (32K x 8) FLASH, 8K x 8 RAM, 2K x 8 EEPROM, 37 I/O, 1.65V ~ 3.6V, -40°C ~ 85°C, Surface Mount, 48-UFQFPN (7x7).

$2.3833Ref. price · indicative, final on quote
STMicroelectronics STM32L051C6U6 datasheet (PDF)
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Jul 2026

Specifications

STM32L051C6U6 specifications
ParameterValue
SeriesSTM32L0
MountingSurface Mount
Oscillator typeInternal
Program memory typeFLASH
Voltage - supply (Vcc (Vdd))1.65V ~ 3.6V
Operating temperature-40°C~85°C(TA)
Speed32MHz
PackageTray
RAM size8K x 8
Core size32-Bit Single-Core
EEPROM size2K x 8
PeripheralsBrown-out Detect/Reset, DMA, I²S, POR, PWM, WDT
ConnectivityI²C, IrDA, SPI, UART/USART
Number of i (O)37
Core processorARM® Cortex®-M0+
Case48-UFQFN Exposed Pad
Data convertersA/D 10x12b
Program memory size32KB (32K x 8)

Product details

Core architecture and memory map

The STM32L051C6U6 is a 32-bit microcontroller built around the ARM Cortex-M0+ core, running at up to 32 MHz.

Rated for a VDD supply between 1.65 V and 3.6 V, this part runs directly from a single Li-ion cell or a regulated 3.3 V rail. The low-voltage floor lets it stay alive during battery discharge without a boost converter.

Peripherals and I/O

The peripheral set also includes a brown-out detect/reset, DMA, I²S, PWM, and a watchdog timer.

Package and thermal pad

Housed in a 48-lead UFQFPN with an exposed pad (7x7 mm body), the package allows a low-profile, surface-mount assembly.

STMicroelectronics lists the STM32L051C6U6 as an active product.

Frequently asked questions

What are the equivalent parts for STM32L051C6U6?

Within the STM32L0 family, the STM32L051C6T6 is a close pin-compatible sibling, differing mainly in package (LQFP-48 instead of UFQFPN). For a drop-in replacement with the same 48-UFQFPN footprint, check the STM32L051C8U6 which doubles the Flash to 64 KB.

How do I get current pricing and availability for STM32L051C6U6?

Submit a request and the current market price and available quantity will be quoted.