Features Core ? 16 MHz advanced STM8 core with Harvard architecture and 3-stage pipeline ? Extended instruction set Memories ? Program memory:8 Kbytes Flash;dataretention 20 years at 55 °C after 100 cycles ? RAM： 1 Kbytes ? Data memory： 128 bytes of true data EEPROM; endurance up to 100 000 write/erase cycles Clock， reset and supply management ? 2.95 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 ? Power management： - Low power modes （wait， active-halt， halt） - Switch-off peripheral clocks individually ? Permanentlyactive， low consumptionpower-on and power-down reset

　　2 Description The STM8S003x value line 8-bit microcontrollers feature 8 Kbytes 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. Deviceperformanceandrobustnessareensuredby integratedtruedata EEPROM supporting up to 100000 write/erase cycles， 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 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.