The STM8S903K3/F3 access line 8-bit microcontrollers offer 8 Kbyte Flash program memory, plus integrated true data EEPROM. The STM8S microcontroller family reference manual (RM0016) refers to devices in this family as low-density. They provide the following benefits: performance, robustness, and reduced system cost. Device performance and robustness are ensured by advanced core and peripherals made in a state-of-the art technology, a 16 MHz clock frequency, robust I/Os, independent watchdogs with separate clock source, and a clock security system. The system cost is reduced thanks to an integrated true data EEPROM for up to 300 k write/erase cycles and a high system integration level with internal clock oscillators, watchdog and brown-out reset. Full documentation is offered as well as a wide choice of development tools. https://elecena.pl/product/16968446/stm8s903f3p3-mainstream-application-specific-line-8-bit-mcu-with-8-kbytes-flash-16-mhz-cpu-integrated-eeprom 2020-06-13 https://elecena.pl/product/16968446/stm8s903f3p3-mainstream-application-specific-line-8-bit-mcu-with-8-kbytes-flash-16-mhz-cpu-integrated-eeprom 2021-04-04 https://elecena.pl/product/16968446/stm8s903f3p3-mainstream-application-specific-line-8-bit-mcu-with-8-kbytes-flash-16-mhz-cpu-integrated-eeprom 2021-05-22 https://elecena.pl/product/16968446/stm8s903f3p3-mainstream-application-specific-line-8-bit-mcu-with-8-kbytes-flash-16-mhz-cpu-integrated-eeprom 2021-10-03 https://elecena.pl/product/16968446/stm8s903f3p3-mainstream-application-specific-line-8-bit-mcu-with-8-kbytes-flash-16-mhz-cpu-integrated-eeprom 2021-12-05 https://elecena.pl/product/16968446/stm8s903f3p3-mainstream-application-specific-line-8-bit-mcu-with-8-kbytes-flash-16-mhz-cpu-integrated-eeprom 2022-01-21 https://elecena.pl/product/16968446/stm8s903f3p3-mainstream-application-specific-line-8-bit-mcu-with-8-kbytes-flash-16-mhz-cpu-integrated-eeprom 2022-02-07 https://elecena.pl/product/16968446/stm8s903f3p3-mainstream-application-specific-line-8-bit-mcu-with-8-kbytes-flash-16-mhz-cpu-integrated-eeprom 2022-04-17 https://elecena.pl/product/16968446/stm8s903f3p3-mainstream-application-specific-line-8-bit-mcu-with-8-kbytes-flash-16-mhz-cpu-integrated-eeprom 2024-02-08 https://elecena.pl/product/16968446/stm8s903f3p3-mainstream-application-specific-line-8-bit-mcu-with-8-kbytes-flash-16-mhz-cpu-integrated-eeprom 2025-03-26 https://elecena.pl/product/16968446/stm8s903f3p3-mainstream-application-specific-line-8-bit-mcu-with-8-kbytes-flash-16-mhz-cpu-integrated-eeprom 2025-07-11 https://elecena.pl/product/16968446/stm8s903f3p3-mainstream-application-specific-line-8-bit-mcu-with-8-kbytes-flash-16-mhz-cpu-integrated-eeprom 2025-07-29