The STM32L051K8U6 is a 16/32-bit microcontroller (MCU) based on the ARM Cortex-M0+ core. It is manufactured by STMicroelectronics, and is part of the STM32L0 Series of Low-Power ARM Cortex-M0+ MCUs. This MCU offers a wide range of security, integration, and power-saving features, such as a true RTC, 12-bit ADC, AES hardware encryption, power scaling, and low-power I/O. It is ideal for applications that require extreme performance, advanced safety and security, efficiency, and ease of use. Its other features include a mix of 16/32-bit timer/counters, advanced analog peripherals, and a rich set of communication peripherals.