Features: Core: 16 MHz advanced STM8 core with Harvard architecture and three-stage pipeline, extended instruction set. Memory: Program memory: 8 Kbyte flash memory, data retention of 20 years at 55°C after 100 cycles. RAM: 1 Kbyte. Data memory: 128 bytes of true data EEPROM with endurance up to 100k write/erase cycles. Clock, reset and power management: 2.95 V to 5.5 V operating voltage. Flexible clock control, 4 main clock sources: low-power crystal resonator oscillator.