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STMicroelectronics STM32L052K8U3 — Microcontrollers & Processors (MCU / MPU / DSP)
STMicroelectronics

STM32L052K8U3 ARM Cortex-M0+ MCU, 32 MHz, 64 KB Flash

MPNSTM32L052K8U3
Active

STMicroelectronics STM32L052K8U3, ARM Cortex-M0+ 32-bit MCU, 32 MHz, 64 KB Flash, 8 KB SRAM, 2 KB EEPROM, 27 I/O, 1.65 V to 3.6 V, -40°C to 125°C, 32-UFQFN Exposed Pad.

$2.4787Ref. price · indicative, final on quote
STM32L052K8U3 datasheet
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Specifications

STM32L052K8U3 Technical Specifications
ParameterValue
SeriesSTM32L0
Mounting typeSurface Mount
Oscillator typeInternal
Program memory typeFLASH
Voltage - supply (Vcc (Vdd))1.65V ~ 3.6V
Operating temperature-40°C ~ 125°C (TA)
Speed32MHz
PackageTray
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 size64KB (64K x 8)

Product details

The STM32L052K8U3 is an STMicroelectronics ultra-low-power MCU built around the ARM Cortex-M0+ core running at 32 MHz.

Temperature range and peripheral set for industrial and field applications

The on-chip analog peripherals include a 10-channel 12-bit ADC and a single 12-bit DAC, plus a brown-out detector and POR that eliminate external supervisor ICs in many designs.

Active lifecycle — no near-term obsolescence concern

ST lists the STM32L052K8U3 with an active product status. The base product number STM32L052 covers a density-and-package family, and the K8U3 variant (64 KB Flash, 32-pin UFQFPN) is a standard catalog item with consistent supply through ST's distribution network.

Frequently asked questions

What is the pin-compatible equivalent to STM32L052K8U3?

Within the STM32L0 series, the STM32L052K8T6 is the same base die and memory configuration in a 32-pin LQFP package, but the footprint differs — the K8U3 uses a 32-UFQFPN (5×5 mm) with exposed pad, while the K8T6 is a 32-LQFP (7×7 mm). They are not pin-compatible across package types. For a drop-in replacement, stay within the UFQFPN-32 footprint variants of the STM32L052 family; the Flash and SRAM sizes must match the application's memory map.