The STM32L031C6T7 is an ARM-based, 32-bit microcontroller unit (MCU) from ST microelectronics. It is part of ST's ultra-low-power STM32L0 series and features an ARM Cortex-M0+ core running at up to 32 MHz frequency. The device includes 32-Kbytes of on-chip Flash memory and provides power-saving modes, allowing applications to actually consume just 1.2 µA in shutdown. With a combination of performance, low power consumption, and advanced peripheral set, the device is suitable for application in low-power and battery-operated products, including wearables, smart metering, and home automation systems.