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STMicroelectronics STM32L031K4U6 — Microcontrollers & Processors (MCU / MPU / DSP)
STMicroelectronics

ST STM32L031K4U6 ARM Cortex-M0+ MCU, 32 MHz, 16 KB Flash

MPNSTM32L031K4U6
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STMicroelectronics STM32L0 series 32-bit ARM Cortex-M0+ MCU, order code STM32L031K4U6, 32 MHz core, 16 KB Flash, 8K x 8 SRAM, 1K x 8 EEPROM, 27 I/O, 10-channel 12-bit ADC, -40°C to 85°C, 32-UFQFPN (5x5) package.

$1.4929Ref. price · indicative, final on quote
STM32L031K4U6 datasheet
StockContact for availability
MOQ1 pcs
  • 100% new & originalTraceable channels only — no refurbs, no pulls, no remarked parts.
  • Date & lot codes on quoteStated per line before you commit; label photos on request.
  • MSL-compliant ESD packingMoisture-sealed bags with indicator cards; reels photo-verified.
  • PayPal buyer protectionPay by T/T, PayPal or Payoneer — card payments covered end to end.

Specifications

STM32L031K4U6 Technical Specifications
ParameterValue
SeriesSTM32L0
Mounting typeSurface Mount
Oscillator typeInternal
Program memory typeFLASH
Voltage - supply (Vcc (Vdd))1.8V ~ 3.6V
Operating temperature-40°C ~ 85°C (TA)
Speed32MHz
PackageTray
RAM size8K x 8
Core size32-Bit Single-Core
EEPROM size1K x 8
PeripheralsBrown-out Detect/Reset, DMA, POR, PWM, WDT
ConnectivityI²C, IrDA, LINbus, SPI, UART/USART
Number of i (O)27
Core processorARM® Cortex®-M0+
Case32-UFQFN Exposed Pad
Data convertersA/D 10x12b
Program memory size16KB (16K x 8)

Product details

32 MHz Cortex-M0+ — what it means for the low-power BOM

The STM32L031K4U6 is a 32-bit ARM Cortex-M0+ MCU from ST's STM32L0 series, clocked at 32 MHz. It carries 16 KB Flash and 8K x 8 SRAM, plus 1K x 8 EEPROM.

Active production — no LTB pressure on this line

The STM32L031K4U6 is listed as Active in production status. No end-of-life notice or last-time-buy window is in effect. For a new design or a BOM freeze, this part carries no near-term obsolescence risk. Sourced and quoted to order against an RFQ through independent distribution; availability and current pricing confirmed at quote time.

Frequently asked questions

What is the closest pin-compatible alternative to STM32L031K4U6?

The STM32L031K6U6 is pin-compatible in the same 32-UFQFPN package, doubling Flash to 32 KB while keeping the same supply range and temperature grade.

What is STM32L031K4U6's maximum operating temperature?

The operating temperature range is -40°C to 85°C (TA), covering industrial and outdoor telecom environments.

What is the core speed of STM32L031K4U6?

The ARM Cortex-M0+ core runs at 32 MHz, the maximum clock for this ultra-low-power STM32L0 series part.