Products Features
Core
? 16 MHz advanced STM8 core with Harvard architecture and 3-stage pipeline
? Extended instruction set
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
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 poweron and power-down reset
Interrupt management
? Nested interrupt controller with 32 interrupts
? Up to 28 external interrupts on 7 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 wake-up timer
? Window watchdog and independent watchdog timers
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
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
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
Unique ID
? 96-bit unique key for each device
Specifications
| Attribute | Attribute value |
| ANSM-Model | STM8S903K3T6C |
| Category | Integrated Circuits (ICs) |
| Embedded | |
| Microcontrollers | |
| Mfr | STMicroelectronics |
| Series | STM8S |
| Packaging | Tray |
| Part Status | Active |
| DigiKey Programmable | Not Verified |
| Core Processor | STM8 |
| Core Size | 8-Bit |
| Speed | 16MHz |
| Connectivity | I2C, IrDA, LINbus, SPI, UART/USART |
| Peripherals | Brown-out Detect/Reset, POR, PWM, WDT |
| Number of I/O | 28 |
| Program Memory Size | 8KB (8K x 8) |
| Program Memory Type | FLASH |
| EEPROM Size | 640 x 8 |
| RAM Size | 1K x 8 |
| Voltage - Supply (Vcc/Vdd) | 2.95V ~ 5.5V |
| Data Converters | A/D 7x10b |
| Oscillator Type | Internal |
| Operating Temperature | -40°C ~ 85°C (TA) |
| Mounting Type | Surface Mount |
| Package / Case | 32-LQFP |
| Base Product Number | STM8 |
Actual product photos

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