Features
■ Operating conditions – Operating power supply: 1.65 to 3.6 V (without BOR), 1.8 to 3.6 V (with BOR) – Temperature range: -40 to 85 or 125 °C
■ Low power features – 5 low power modes: Wait, Low power run, Low power wait, Active-halt with RTC, Halt – Ultralow leakage per I/0: 50 nA – Fast wakeup from Halt: 5 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, ultrasafe BOR reset with 5 selectable thresholds – Ultralow power POR/PDR – Programmable voltage detector (PVD)
■ Clock management – 32 kHz and 1-16 MHz crystal oscillators – Internal 16 MHz factory-trimmed RC – Internal 38 kHz low consumption RC – Clock security system
■ Low power RTC – BCD calendar with alarm interrupt – Digital calibration with +/- 0.5 ppm accuracy – LSE security system – Auto-wakeup from Halt w/ periodic interrupt
■ Memories – Up to 8 Kbytes of Flash program memory plus 256 bytes of data EEPROM with ECC – Flexible write/read protection modes – 1 Kbyte of RAM
■ DMA – 4 channels supporting ADC, SPI, I2C, USART, timers – 1 channel for memory-to-memory
■ 12-bit ADC up to 1 Msps/28 channels – Temp. sensor and internal ref. voltage
■ 2 ultralow power comparators – 1 with fixed threshold and 1 rail to rail – Wakeup capability
■ Timers – Two 16-bit timers with 2 channels (IC, OC, PWM), quadrature encoder (TIM2, TIM3) – One 8-bit timer with 7-bit prescaler (TIM4) – 1 Window and 1 independent watchdog – Beeper timer with 1, 2 or 4 kHz frequencies
■ Communication interfaces – One synchronous serial interface (SPI) – Fast I2C 400 kHz – One USART
■ Up to 41 I/Os, all mappable on interrupt vectors
■ Up to 20 capacitive sensing channels supporting touchkey, proximity touch, 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 UFQFPN28 UFQFPN32 TSSOP20 UFQFPN20 LQFP48