This part is a kind of semiconductor called 8S003F3.

Function of this product has STM8S003F3.

Manufacturers : STMicroelectronics

Image and pinout :

Some of the text within the PDF file :

STM8S003F3 STM8S003K3 Value line, 16 MHz STM8S 8-bit MCU, 8 Kbyte Flash, 128 byte data EEPROM, 10-bit ADC, 3 timers, UART, SPI, I²C Datasheet - production data Features Core • 16 MHz advanced STM8 core with Harvard architecture and 3-stage pipeline • Extended instruction set Memories • Program memory: 8 Kbyte Flash memory; data retention 20 years at 55 °C after 100 cycles • RAM: 1 Kbyte • Data memory: 128 bytes true data EEPROM; endurance up to 100 k write/erase cycles Clock, reset and supply management • 2.95 V to 5.5 V operating voltage • Flexible clock control, 4 master clock sources – Low-power crystal resonator oscillator – External clock input – Internal, user-trimmable 16 MHz RC – Internal low-power 128 kHz RC • Clock security system with clock monitor �� [ ... ]

8S003F3 PDF Datasheet Download