ST STM8S903K3T6C

16 MHz STM8S 8-bit microcontroller with up to 8 Kbytes Flash, 1 Kbyte RAM, 640 bytes EEPROM, 10-bit ADC, 2 timers, UART, SPI, and I²C interfaces.

• 16 MHz advanced STM8 core with Harvard architecture and 3-stage pipeline Extended instruction set
• Program memory: 8 Kbytes Flash; data retention 20 years at 55°C after 10 kcycles
• Data memory: 640 bytes true data EEPROM; endurance 300 kcycles
• RAM: 1 Kbytes
• 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
  • Permanently active, low consumption power-on and power-down reset
• Nested interrupt controller with 32 interrupts
• Up to 28 external interrupts on 7 vectors
• Advanced control timer: 16-bit, 4 CAPCOM channels, 3 complementary outputs, dead-time insertion and flexible synchronization
• 16-bit general purpose timer, with 3 CAPCOM channels (IC, OC or PWM)
• 8-bit basic timer with 8-bit prescaler
• Auto wake-up timer
• Window watchdog and independent watchdog timers
• UART with clock output for synchronous operation, SmartCard, IrDA, LIN master mode
• SPI interface up to 8 Mbit/s
• I²C interface up to 400 kbit/s
• 10-bit, ±1 LSB ADC with up to 7 multiplexed channels + 1 internal channel, scan mode and analog watchdog
• Up to 28 I/Os on a 32-pin package including 21 high sink outputs
• Highly robust I/O design, immune against current injection
• 96-bit unique key for each device