STMicroelectronics STM32L010K4T6

Overview

STM32L010K4T6 from STMicroelectronics is an ultra-low-power 32-bit Arm® Cortex®-M0+ microcontroller in LQFP32 package, featuring 16-Kbyte Flash, 2-Kbyte SRAM, 128-byte EEPROM, 12-bit ADC (1.14 Msps), and integrated RTC with 0.54 µA Stop mode + RTC + RAM retention. It targets battery-powered sensor nodes and compact IoT endpoints requiring long runtime and minimal PCB footprint.

For engineers reviewing the STM32L010K4T6 datasheet, STM32L010K4T6 pinout, STM32L010K4T6 application, or STM32L010K4T6 equivalent, key selection criteria include ultra-low-power operation down to 0.23 µA Standby, 5 µs Flash wakeup, 23 I/Os with 5-V tolerance, and dual UART support including LPUART for always-on communication.

Technical Context

The STM32L010K4T6 integrates a Cortex-M0+ core running at up to 32 MHz with dynamic voltage scaling, supported by multiple clock sources: 16 MHz HSI (±1%), 32 kHz LSE for RTC, and programmable MSI (65 kHz–4.2 MHz). Its power architecture includes five low-power modes-Run, Sleep, Low-power Run, Stop, and Standby-with dedicated brownout reset (BOR) and POR/PDR circuits.

Peripherals are interconnected via a centralized AHB/APB matrix enabling concurrent DMA transfers across ADC, USART, SPI, I2C, and timers. The device supports serial wire debug (SW-DP), pre-programmed USART/SPI bootloader, and hardware CRC unit-all while maintaining ECOPACK2 environmental compliance.

Key Specifications

Pinout & Package

LQFP32 package (7 × 7 mm, 0.8 mm pitch), RoHS-compliant and ECOPACK2 certified. Pinout validated per STMicroelectronics DS12323 Rev 3 Figure 4 and Table 10.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar ultra-low-power MCU applications.

Compared with STM32L010K4T6, STM32L031K4T6 adds analog peripherals at identical power and footprint, while EFM32ZG108F16 trades feature depth for marginally lower sleep current-making STM32L010K4T6 optimal for balanced ultra-low-power sensing with embedded data retention and communication.

Availability

STM32L010K4T6 is available at Aetrix Electronics and suitable for smart metering nodes, wearable health sensors, industrial wireless sensors, and asset tracking beacons requiring stable component supply and long-term production support.

Supply support for STM32L010K4T6 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

STMicroelectronics is a global semiconductor leader headquartered in Geneva, Switzerland, designing and manufacturing microcontrollers, power ICs, sensors, and analog devices for industrial, automotive, and consumer markets.

The STM32L0 Value line targets cost-sensitive, battery-operated applications demanding ultra-low power, small form factor, and essential peripherals-enabling rapid deployment of intelligent edge nodes without compromising runtime or reliability.

FAQ

What is the maximum operating frequency and corresponding power consumption in Run mode?

The STM32L010K4T6 operates up to 32 MHz using the HSI16 or HSE clock sources. At 32 MHz and 3.3 V, typical Run mode current is 76 µA/MHz (≈2.43 mA total), measured with code executing from Flash memory and all peripherals disabled per DS12323 Section 6.3.4.

Does the device support hardware encryption or secure boot features?

No. The STM32L010K4T6 does not integrate hardware cryptographic accelerators, TRNG, or secure boot ROM. Security relies on software-implemented algorithms and external secure elements; for hardware security, consider STM32L4 or STM32H5 series MCUs.

Can the 128-byte EEPROM be used for storing calibration data across power cycles?

Yes. The embedded 128-byte data EEPROM supports byte/word write and page erase operations with 100,000 write/erase cycles and 20-year data retention at 55 °C (DS12323 Section 6.3.9). It is accessed via dedicated PEC (Program/Erase Controller) registers and retains data in all low-power modes except Reset.

Is the LQFP32 package pin-compatible with other STM32L0 Value line devices?

Yes-STM32L010K4T6 shares the same LQFP32 pinout with STM32L031K4T6 and STM32L051K8T6, enabling direct drop-in replacement for memory or peripheral upgrades. However, unused pins may differ in alternate function mapping; verify AFIO register configuration per target device's RM0377 reference manual.