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
• I 2 C 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 non-
intrusive debugging