8位MCU
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.
The system cost is reduced thanks to an integrated true data EEPROM for up to 300 k write/erase cycles and a high system integration level with internal clock oscillators, watchdog and brown-out reset.
Full documentation is offered as well as a wide choice of development tools.
**Key Features**
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Core
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16 MHz advanced STM8 core with Harvard architecture and 3-stage pipeline
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Extended instruction set
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Memories
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Program memory: 8 Kbyte Flash; data retention 20 years at 55 °C after 10 kcycle
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Data memory: 640 byte true data EEPROM; endurance 300 kcycle
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RAM: 1 Kbyte
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Clock, reset and supply management
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2.95 to 5.5 V operating voltage
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Flexible clock control, 4 master clock sources
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Low power crystal resonator oscillator
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External clock input
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Internal, user-trimmable 16 MHz RC
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Internal low-power 128 kHz RC
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Clock security system with clock monitor
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Power management:
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Low-power modes wait, active-halt, halt
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Switch-off peripheral clocks individually
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Permanently active, low-consumption power-on and power-down reset
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Interrupt management
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Nested interrupt controller with 32 interrupts
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Up to 28 external interrupts on 7 vectors
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Timers
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Advanced control timer: 16-bit, 4 CAPCOM channels, 3 complementary outputs, dead-time insertion and flexible synchronization
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16-bit general purpose timer, with 3 CAPCOM channels IC, OC or PWM
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8-bit basic timer with 8-bit prescaler
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Auto wake-up timer
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Window watchdog and independent watchdog timers
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Communication interfaces
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UART with clock output for synchronous operation, SmartCard, IrDA, LIN master mode
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SPI interface up to 8 Mbit/s
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I2C interface up to 400 kbit/s
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Analog to digital converter ADC
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10-bit, ±1 LSB ADC with up to 7 multiplexed channels + 1 internal channel, scan mode and analog watchdog
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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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Unique ID
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96-bit unique key for each device