Description
The STM8S003F3/K3 value line 8-bit microcontrollers offer 8 Kbytes of Flash program memory, plus integrated true data EEPROM. They are referred to as low-density devices in the STM8S microcontroller family reference manual (RM0016).
The STM8S003F3/K3 value line devices provide the following benefits: performance, robustness and reduced system cost.

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
• Power management
    – Low-power modes (wait, active-halt, halt)
    – Switch-off peripheral clocks individually
    – Permanently active, low-consumption power-on and power-down reset

Interrupt management
• Nested interrupt controller with 32 interrupts
• Up to 27 external interrupts on 6 vectors

Timers
• 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 wakeup timer
• Window and independent watchdog timers

Communications interfaces
• 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

Analog to digital converter (ADC)
• 10-bit ADC, ± 1 LSB ADC with up to 5 multiplexed channels, scan mode and analog watchdog

I/Os
• Up to 28 I/Os on a 32-pin package including 21 high-sink outputs
• Highly robust I/O design, immune against current injection

Development support
• Embedded single-wire interface module (SWIM) for fast on-chip programming and nonintrusive debugging