Item specifics
Description
STM32L010K4T6 Product Overview
STM32L010K4T6 is a Cortex-M0+ MCU at 32 MHz, LQFP-32. 16 KB Flash, 2 KB SRAM, 256B EEPROM, 12-bit ADC (10 ch), LP timers, RTC, 1×USART, 1×SPI, 1×I2C. Up to 26 x 5 V-tolerant I/Os. 1.8–3.6 V, -40–85 °C. As a value-line member of the STM32L0 series, it delivers 32-bit performance at exceptionally low power and cost, optimized for battery-powered, space-constrained IoT nodes and portable applications.
STM32L010K4T6 Core Features
Core: Cortex-M0+ 32 MHz, low-power design
Memory: 16 KB Flash, 2 KB SRAM, 256B EEPROM
Analog: 12-bit ADC (10 ch)
Connectivity: 1×USART, 1×SPI, 1×I2C
Timers: LP Timer, GP Timers, RTC
I/Os: 26 (5 V-tolerant)
Package: LQFP-32
Temperature Range: -40°C to 85°C
STM32L010K4T6 Applications
IoT Sensor Nodes: Battery-powered environmental sensors, wireless modules
Portable Devices: Wearables, portable medical devices
Industrial Metering: Water, gas, and electricity meters
Consumer Electronics: Remote controls, e-labels, smart cards
Space-Constrained Energy Harvesting: Self-powered systems using energy harvesting
STM32L010K4T6 Key Advantages
Ultra-Low Power: Multiple low-power modes extend battery life
Integrated EEPROM: Eliminates external storage for data logging
32-bit Performance, 8-bit Price: Enjoy the ARM ecosystem at a very low cost
5 V-tolerant I/Os: Enhanced robustness, simplified level shifting
Compact 32-pin Package: Saves PCB space for miniaturized designs
Full Ecosystem Compatibility: Easy development with STM32CubeIDE/HAL/LL libraries
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FAQ
1. What is STM32L010K4T6 and how does it differ from STM32L011?
STM32L010K4T6 is an ultra‑low‑power, value‑line 32‑bit MCU from STMicroelectronics' STM32L0 series, based on an Arm® Cortex®‑M0+ core in an LQFP‑32 package. Operating at 32 MHz, it provides 16 KB Flash, 2 KB SRAM, a 12‑bit ADC, and a low‑power UART. Compared to the STM32L011, it removes the internal 512‑byte hardware EEPROM and some analog peripherals to deliver the same ultra‑low‑power processing and analog acquisition at an even lower cost, making it ideal for simple battery‑powered devices that do not require non‑volatile data storage.
2. What are the key specifications of STM32L010K4T6?
Core: Arm® Cortex®‑M0+, up to 32 MHz
Memory: 16 KB Flash, 2 KB SRAM (no hardware EEPROM)
Operating Voltage: 1.8 V to 3.6 V
Temperature Range: -40 °C to +85 °C (industrial grade)
I/O Count: up to 25
Package: LQFP‑32 (7 mm × 7 mm)
3. STM32L010K4T6 has no hardware EEPROM. How can I store user configuration or calibration data?
Although it lacks a hardware EEPROM, you can emulate EEPROM in the internal Flash using the official ST EEPROM emulation library. This library implements wear‑leveling to achieve reliable non‑volatile storage for small amounts of data such as device IDs or calibration parameters. If the emulation approach does not meet endurance or speed requirements, an external low‑cost SPI EEPROM can be added.
4. Why is STM32L010 less expensive than STM32L011? What has been simplified?
The L010 further streamlines the L011 by removing the hardware EEPROM and some analog features (e.g., window watchdog, some timer channels), while retaining the core Cortex‑M0+ processor, 16 KB Flash, 2 KB SRAM, 12‑bit ADC, and LPUART. This simplification allows the L010 to offer the same ultra‑low‑power processing at a more competitive price point, targeting cost‑sensitive applications with clearly defined peripheral needs.
5. Are 16 KB Flash and 2 KB SRAM sufficient? What types of programs can run?
This memory configuration is designed for highly optimized bare‑metal firmware or an extremely lightweight RTOS. 16 KB Flash can hold basic peripheral drivers, LPUART communication routines, and simple application logic. 2 KB SRAM requires very careful variable management, but is perfectly adequate for fixed‑function applications—for example, reading a sensor, transmitting data over LPUART, and then entering deep sleep. If code size exceeds 16 KB, consider upgrading to the 32 KB L031 or 64 KB L051 series.
6. How does it perform in terms of low power consumption? What are the typical currents across its modes?
Temperature Range: -40 °C to +85 °C
Ultra‑low‑power modes:
Standby mode: ~0.27 µA (no RTC)
Stop mode: ~0.4 µA (no RTC), ~0.8 µA with RTC
Run mode: ~88 µA/MHz
7. How many ADC channels can be brought out in the LQFP‑32 package, and how accurate is it?
In the LQFP‑32 package, up to 12‑14 ADC input channels are available, depending on GPIO multiplexing configuration. The ADC supports a maximum sampling rate of 1.14 Msps with 12‑bit resolution, providing sufficient accuracy for common sensors like temperature, pressure, and battery voltage. It can also wake the CPU via the analog watchdog while in low‑power modes, making it ideal for battery‑powered devices that periodically monitor analog signals.
8. What communication interfaces does the chip have? Is there a low‑power UART?
The STM32L010K4T6 includes 1× SPI, 1× I²C, and 1× low‑power UART (LPUART). The LPUART can remain active in Stop mode and wake the MCU upon address match or start‑bit detection, greatly reducing standby power. The 32‑pin package provides enough pins to use these interfaces without significant conflicts; STM32CubeMX can be used to flexibly assign pin functions.
9. What development tools are needed for the STM32L010K4T6? Is there an evaluation board available?
ST provides free STM32CubeMX and STM32CubeIDE, along with the STM32CubeL0 firmware library. Debugging and programming use an ST‑Link debugger. For rapid prototyping, the NUCLEO‑L031K6 board (LQFP‑32) is an excellent choice—though it carries an L031 chip, the L010 shares the same core, ADC, and LPUART peripherals. Code can be easily ported by switching the target device to L010K4T6 in CubeMX and disabling any EEPROM‑related features.
10. If I later need more Flash, EEPROM, or richer peripherals, what upgrade paths are available?
If hardware EEPROM is required, you can upgrade to the pin‑compatible STM32L011K4T6 (16 KB Flash, adds 512‑byte EEPROM). For larger Flash and SRAM, consider the STM32L031K6T6 (32 KB Flash, 8 KB SRAM). If a segment LCD driver or USB is needed, step up to the L052 or L053 series. In all these migration paths, a significant portion of the core code can be reused, requiring only peripheral and pin configuration adjustments in STM32CubeMX.