STMicroelectronics STM32L051K6U6

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Product attributes Property Value
Manufacturer STMicroelectronics
Product Series STM32L0
Packaging Tray |
Core Processor ARM® Cortex®-M0+
Core Size 32-Bit Single-Core
Speed 32MHz
Connectivity I2C, IrDA, SPI, UART/USART
Peripherals Brown-out Detect/Reset, DMA, POR, PWM, WDT
Number of I/O 27
Program Memory Size 32KB (32K x 8)
Program Memory Type FLASH
EEPROM Size 2K x 8
RAM Size 8K x 8
Voltage - Supply (Vcc/Vdd) 1.65V ~ 3.6V
Data Converters A/D 10x12b
Oscillator Type Internal
Operating Temperature -40°C ~ 85°C (TA)
Grade -
Qualification AEC -
Mounting Type Surface Mount
Supplier Device Package 32-UFQFPN (5x5)
Package / Case 32-UFQFN Exposed Pad
ROHS RoHS Compliant - Hazardous Substance Free Electronic Components | HQICKEY

The STMicroelectronics STM32L051K6 is an ultra-low-power 32-bit microcontroller based on the ARM Cortex-M0+ core. It operates from 1.65V to 3.6V and runs at up to 32MHz, offering a perfect balance of performance and efficiency. With 32KB Flash and 8KB RAM, it provides ample resources for embedded applications. Its integrated DMA, PWM, and safety features make it a versatile choice for battery-powered and industrial designs. The 32-pin UFQFN package is ideal for compact PCBs.

  • Ultra-Low Power: 1.65V operation and multiple low-power modes extend battery life significantly.
  • Modern ARM Core: Cortex-M0+ offers a mature ecosystem and efficient code execution.
  • Rich Peripherals: DMA and PWM reduce CPU load and enable complex output generation.
  • Compact Size: 32-UFQFN package fits space-constrained wearable and IoT devices.

Wearable Health Monitors

The 1.65V operation and 8KB RAM allow for continuous heart-rate and activity tracking with minimal power draw.

Smart Home Sensors

Its low-power modes and DMA enable efficient handling of door/window sensors and environmental monitoring.

Industrial Sensor Nodes

With 32MHz and robust peripherals, it can process 4-20mA loop signals and communicate via Modbus.

Portable Consumer Electronics

The ARM core and 32KB Flash support firmware for e-cigarettes, smart trackers, or remote controls.

Battery Management Systems

Its precise ADC and low voltage operation make it suitable for monitoring cell voltages in small packs.

IoT Edge Devices

Combine its serial interfaces with external LoRa or BLE modules to create low-power edge nodes.

Q: What is the operating voltage range?
A: It operates from 1.65V to 3.6V, supporting low-voltage and battery applications.
Q: What core does it use?
A: It is based on the ARM Cortex-M0+ processor running at up to 32MHz.
Q: How much Flash and RAM are available?
A: It has 32KB of Flash and 8KB of RAM.
Q: What package is this offered in?
A: It comes in a 32-pin UFQFN with exposed pad.
Q: What are the key integrated peripherals?
A: It includes DMA, PWM, Brown-out Reset, POR, and WDT.
Base Product Number : STM32L051K6
32-bit MCU 32-UFQFN 32KB Flash 32MHz 8KB RAM ARM Cortex-M0+ DMA IoT STM32L0 ultra-low-power wearable
Q: What is the operating voltage range?
A: It operates from 1.65V to 3.6V, supporting low-voltage and battery applications.
Q: What core does it use?
A: It is based on the ARM Cortex-M0+ processor running at up to 32MHz.
Q: How much Flash and RAM are available?
A: It has 32KB of Flash and 8KB of RAM.
Q: What package is this offered in?
A: It comes in a 32-pin UFQFN with exposed pad.
Q: What are the key integrated peripherals?
A: It includes DMA, PWM, Brown-out Reset, POR, and WDT.