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STMicroelectronics STM32L011K4U6 — Microcontrollers & Processors (MCU / MPU / DSP)

STM32L011K4U6 ARM Cortex-M0+ MCU, 32 MHz, 16 KB Flash

MPNSTM32L011K4U6
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STMicroelectronics STM32L011K4U6, ARM Cortex-M0+ 32-bit MCU, 32 MHz, 16 KB Flash, 2K x 8 SRAM, 512 x 8 EEPROM, 1.65-3.6 V, -40 to 85°C, 28 I/O, 32-UFQFPN (5x5 mm).

$2.7700Ref. price · indicative, final on quote
STMicroelectronics STM32L011K4U6 datasheet (PDF)
Packaging32-UFQFN Exposed Pad
RoHSROHS3 Compliant
SeriesSTM32L0
Independent supplier — new & surplus stockAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

STM32L011K4U6 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 size2K x 8
Core size32-Bit Single-Core
EEPROM size512 x 8
PeripheralsBrown-out Detect/Reset, DMA, POR, PWM, WDT
ConnectivityI²C, IrDA, SPI, UART/USART
Number of i (O)28
Core processorARM® Cortex®-M0+
Case32-UFQFN Exposed Pad
Data convertersA/D 10x12b
Program memory size16KB (16K x 8)

Product details

32 MHz Cortex-M0+ — right-sized for battery-duty control

The STM32L011K4U6 is an ultra-low-power 32-bit MCU from STMicroelectronics built around the ARM Cortex-M0+ core, running at 32 MHz.

Industrial temperature grade — outdoor and factory-floor ready

The 1.65 V minimum supply holds through cold-crank conditions, and the internal oscillator keeps the clock stable across the range without an external crystal.

16 KB Flash, 2 KB SRAM — sizing the firmware budget

The 16 KB Flash is the entry-level density in the STM32L0 series. It comfortably fits a bootloader plus a modest application — think a temperature logger, a simple Modbus RTU slave, or a Hall-effect sensor interface. If your firmware image needs more headroom, the STM32L0 family offers pin-compatible parts with up to 64 KB Flash (same package and pinout), so a density upgrade is a board-spin, not a respin.

Frequently asked questions

Can STM32L011K4U6 be programmed using ST-Link?

Yes, the STM32L0 family uses the standard SWD debug interface, which is supported by ST-Link/V2 and ST-Link/V3 programmers. The bootloader also supports UART programming via the USART pins.

What is the closest functional equivalent with larger flash?

Within the same STM32L0 series, pin-compatible parts with up to 64 KB Flash are available (e.g., STM32L021K4T6 or STM32L031K6T6). These share the same 32-UFQFPN footprint and peripheral set, so a firmware-only migration is possible without a PCB change.