Features
■ Ultra-low-power platform – 1.65 V to 3.6 V power supply – -40°C to 105°C temperature range – 305 nA standby mode (3 wakeup pins) – 1.15 µA standby mode + RTC – 0.475 µA stop mode (16 wakeup lines) – 1.35 µA stop mode + RTC – 11 µA Low-power run mode – 230 µA/MHz run mode – 10 nA ultra-low I/O leakage – 8 µs wakeup time
■ Core: ARM® Cortex®-M3 32-bit CPU – From 32 kHz up to 32 MHz max – 1.25 DMIPS/MHz (Dhrystone 2.1) – Memory protection unit
■ Up to 23 capacitive sensing channels
■ CRC calculation unit, 96-bit unique ID
■ Reset and supply management – Low-power, ultrasafe BOR (brownout reset) with 5 selectable thresholds – Ultra-low-power POR/PDR – Programmable voltage detector (PVD)
■ Clock sources – 1 to 24 MHz crystal oscillator – 32 kHz oscillator for RTC with calibration – High Speed Internal 16 MHz factory- trimmed RC (+/- 1%) – Internal low-power 37 kHz RC – Internal multispeed low-power 65 kHz to 4.2 MHz – PLL for CPU clock and USB (48 MHz)
■ Pre-programmed bootloader – USB and USART supported
■ Serial wire debug, JTAG and trace
■ Up to 116 fast I/Os (102 I/Os 5V tolerant), all mappable on 16 external interrupt vectors
■ Memories – 256 KB Flash with ECC – 32 KB RAM – 8 KB of true EEPROM with ECC – 128-byte backup register
■ LCD driver (except STM32L151xC/C-A devices) up to 8x40 segments, contrast adjustment, blinking mode, step-up converter
■ Rich analog peripherals (down to 1.8V) – 2x operational amplifiers – 12-bit ADC 1 Msps up to 40 channels – 12-bit DAC 2 ch with output buffers – 2x ultra-low-power-comparators (window mode and wake up capability)
■ DMA controller 12x channels
■ 9x peripheral communication interfaces – 1x USB 2.0 (internal 48 MHz PLL) – 3x USARTs – Up to 8x SPIs (2x I2S, 3x 16 Mbit/s) – 2x I2Cs (SMBus/PMBus)
■ 11x timers: 1x 32-bit, 6x 16-bit with up to 4 IC/OC/PWM channels, 2x 16-bit basic timers, 2x watchdog timers (independent and window)