What this 8-bit MCU does on the board
The STMicroelectronics STM8S103F3U6TR is an 8-bit microcontroller from the STM8S value-line family, built around the STM8 core running at 16 MHz.
Sixteen I/O lines are available on the 20-pin UFQFN package, along with a 5-channel 10-bit ADC.
