BUY STM8S103F3P6 https://www.utsource.net/itm/p/5099601.html
IC MCU 8BIT 8KB FLASH 20TSSOP
Description: STM8S 8-bit Microcontroller, 8 Kbytes Flash, 16 MHz CPU, integrated EEPROM, 10-bit ADC, 3 Timers, UART, SPI, I2C Features: - 8 Kbytes Flash program memory - 16 MHz CPU frequency - Integrated EEPROM - 10-bit ADC - 3 Timers - UART - SPI - I2C Applications: - Automotive - Industrial - Home and building automation - Consumer electronics - Medical applications - Power supplies - Security systems (For reference only)