datasheetFeatures
• Operating conditions
– Operating power supply range 1.8 V to
3.6 V (down to 1.65 V at power down)
– Temp. range: – 40 °C to 85, 105 or 125 °C
• Low power features
– 5 low power modes: Wait, Low power run
(5.1 µA), Low power wait (3 µA), Active-halt
with full RTC (1.3 µA), Halt (350 nA)
– Consumption: 195 µA/MHz + 440 µA
– Ultra-low leakage per I/0: 50 nA
– Fast wakeup from Halt: 4.7 µs
• Advanced STM8 core
– Harvard architecture and 3-stage pipeline
– Max freq. 16 MHz, 16 CISC MIPS peak
– Up to 40 external interrupt sources
• Reset and supply management
– Low power, ultra-safe BOR reset with
5 selectable thresholds
– Ultra-low-power POR/PDR
– Programmable voltage detector (PVD)
• Clock management
– 1 to 16 MHz crystal oscillator
– 32 kHz crystal oscillator
– Internal 16 MHz factory-trimmed RC
– Internal 38 kHz low consumption RC
– Clock security system
• Low power RTC
– BCD calendar with alarm interrupt
– Auto-wakeup from Halt w/ periodic interrupt
• LCD: up to 4×28 segments w/ step-up
converter
• Memories
– Up to 32 Kbytes of Flash program memory
and 1 Kbyte of data EEPROM with ECC,
RWW
– Flexible write and read protection modes
– Up to 2 Kbytes of RAM
• DMA
– 4 channels; supported peripherals: ADC,
DAC, SPI, I2C, USART, timers
– 1 channel for memory-to-memory
• 12-bit DAC with output buffer
• 12-bit ADC up to 1 Msps/25 channels
– T. sensor and internal reference voltage
• 2 ultra-low-power comparators
– 1 with fixed threshold and 1 rail to rail
– Wakeup capability
• Timers
– Two 16-bit timers with 2 channels (used as
IC, OC, PWM), quadrature encoder
– One 16-bit advanced control timer with
3 channels, supporting motor control
– One 8-bit timer with 7-bit prescaler
– 2 watchdogs: 1 window, 1 independent
– Beeper timer with 1, 2 or 4 kHz frequencies
• Communication interfaces
– Synchronous serial interface (SPI)
– Fast I2C 400 kHz SMBus and PMBus™
– USART (ISO 7816 interface and IrDA)
• Up to 41 I/Os, all mappable on interrupt vectors
• Up to 16 capacitive sensing channels
supporting touchkey, proximity, linear touch
and rotary touch sensors
• Development support
– Fast on-chip programming and non
intrusive debugging with SWIM
– Bootloader using USART
• 96-bit unique ID
