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STM32L051K8T6

STM32L051K8T6

STMicroelectronics
ARM® Cortex®-M0+ STM32L0 Microcontroller IC 32-Bit 32MHz 64KB (64K x 8) FLASH 32-LQFP (7x7)
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Overview

The STM32L051K8T6 is an ultra-low-power 32-bit microcontroller based on the ARM Cortex-M0+ core, operating at frequencies up to 32MHz. It is designed for high efficiency in power-sensitive applications, featuring 64KB of Flash, 8KB of RAM, and 2KB of true embedded EEPROM in a compact 32-pin LQFP package.

Why Choose This Part

This MCU provides a highly efficient balance of performance and power consumption, consuming only 8.5mA at 32kHz while running from RAM. It includes specialized low-power modes such as Stop and Standby, and offers 27 5V-tolerant I/O pins for flexible interfacing with legacy logic.

Applications

Battery-Powered Sensors
Optimized for remote environmental or industrial sensors that require long battery life with standby currents as low as 0.29uA.
Utility Metering
Used in gas, water, and heat meters where low-power operation and integrated EEPROM for data logging are essential.
Smart Home Nodes
Ideal for simple home automation devices like door sensors or light switches that utilize 1.65V to 3.6V power rails.

Key Specifications

Speed 32MHz
RAM Size 8K x 8
Core Size 32-Bit
EEPROM Size 2K x 8
Peripherals Brown-out Detect/Reset, DMA, POR, PWM, WDT
Connectivity I2C, IrDA, SPI, UART/USART
Mounting Type Surface Mount
Number of I/O 27
Core Processor ARM Cortex-M0+
Package / Case 32-LQFP
Data Converters A/D 10x12b
Oscillator Type Internal
Program Memory Size 64KB (64K x 8)
Program Memory Type FLASH
Operating Temperature -40degC ~ 85degC (TA)
Supplier Device Package 32-LQFP (7x7)
Voltage - Supply (Vcc/Vdd) 1.65V ~ 3.6V

Getting Started

Development is best supported by the STM32Cube ecosystem, including STM32CubeIDE and the STM32CubeL0 firmware package. For hardware prototyping, the NUCLEO-L053R8 or a custom board using the 32-LQFP footprint can be programmed via Serial Wire Debug (SWD).

Dev Boards

Development boards and breakout modules featuring the STM32L051K8T6 or compatible chips — ready to use for prototyping.

STM32L0538-DISCO STMicroelectronics
STM32L053C8 Discovery STM32L0 ARM® Cortex®-M0+ MCU 32-Bit Embedded Evaluation Board
Digi-Key 36 in stock
NUCLEO-L073RZ STMicroelectronics
Development Boards & Kits - ARM STM32 Nucleo-64 development board STM32L073RZ MCU, supports Arduino & ST morpho
Digi-Key Mouser 263 in stock

STM32L051 Family

Part NumberDifferenceStock
STM32L051R8T6 64-pin 834

Also Consider

ATSAMD21E18A-AU MCHPMicrochip Technology - A Cortex-M0+ alternative with higher Flash capacity (256KB) and integrated USB support.

Categories

Microcontrollers > ARM Cortex-M0 / M0+ Microcontrollers > STMicroelectronics Wearables & Medical > Ultra-Low Power MCUs
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