Description
The STM8S903K3/F3 access line 8-bit microcontrollers offer 8 Kbyte 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.
Device performance and robustness are ensured by 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.
Key Features
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Core
- 16 MHz advanced STM8 core with Harvard architecture and 3-stage pipeline
- Extended instruction set
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Memories
- Program memory: 8 Kbyte Flash; data retention 20 years at 55 °C after 10 kcycle
- Data memory: 640 byte true data EEPROM; endurance 300 kcycle
- RAM: 1 Kbyte
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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
- Permanently active, low-consumption power-on and power-down reset
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Interrupt management
- Nested interrupt controller with 32 interrupts
- Up to 28 external interrupts on 7 vectors
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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 wake-up timer
- Window watchdog and independent watchdog timers
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Communication 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
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Analog to digital converter (ADC)
- 10-bit, ±1 LSB ADC with up to 7 multiplexed channels + 1 internal channel, scan mode and analog watchdog
- Internal reference voltage measurement
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I/Os
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Up to 28 I/Os on a 32-pin package including 21 high sink outputs
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Highly robust I/O design, immune against current injection
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Resources
