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STMicroelectronics STM32L052K6U6TR — Microcontrollers & Processors (MCU / MPU / DSP)

STM32L052K6U6TR ARM Cortex-M0+ MCU, 32 MHz, 32 KB Flash

MPNSTM32L052K6U6TR
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STMicroelectronics STM32L052K6U6TR, ARM® Cortex®-M0+ 32-Bit MCU, 32 MHz, 32 KB Flash, 8K x 8 SRAM, 2K x 8 EEPROM, 1.65V–3.6V, 27 I/O, I²C/SPI/UART/USB, 32-UFQFPN (5x5 mm), -40°C to 85°C.

$3.9500Ref. price · indicative, final on quote
STMicroelectronics STM32L052K6U6TR datasheet (PDF)
Packaging32-UFQFN Exposed Pad
RoHSROHS3 Compliant
SeriesSTM32L0
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

STM32L052K6U6TR 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
PackageTape & Reel (TR) Cut Tape (CT)
RAM size8K x 8
Core size32-Bit Single-Core
EEPROM size2K x 8
PeripheralsBrown-out Detect/Reset, DMA, POR, PWM, WDT
ConnectivityI²C, IrDA, SPI, UART/USART, USB
Number of i (O)27
Core processorARM® Cortex®-M0+
Case32-UFQFN Exposed Pad
Data convertersA/D 10x12b; D/A 1x12b
Program memory size32KB (32K x 8)

Product details

Low-power Cortex-M0+ MCU with on-chip EEPROM and USB

The 32-UFQFPN package with exposed pad (5x5 mm) fits space-constrained designs in industrial sensors, portable medical devices, and IoT edge nodes.

32 MHz core and memory sizing for the application

The 32 MHz Cortex-M0+ core provides enough throughput for sensor fusion loops, human-machine interface polling, and USB packet handling without burning through the power budget. The 2 KB EEPROM is a real differentiator: it stores calibration constants, configuration parameters, or device identity data without needing external serial EEPROM or wear-leveling in Flash. That saves both BOM cost and board area.

Frequently asked questions

What package does STM32L052K6U6TR use?

It comes in a 32-UFQFN package with exposed pad, also designated 32-UFQFPN (5x5 mm). The mounting type is surface mount.

What are the alternatives to STM32L052K6U6TR?

A higher-end alternative is the STM32L151CBU6A, which uses a Cortex-M3 core at the same 32 MHz clock but offers more I/O (37 vs 27), larger ADC (16x12-bit vs 10x12-bit), and dual 12-bit DACs. However, it is not pin-compatible and comes in a larger package (Tray, not Tape & Reel). The STM32L052K6U6TR is the better fit for ultra-low-power, small-footprint designs that need on-chip EEPROM.