STMicroelectronics

Ultra-low-power platform 1.65 V to 3.6 V power supply -40 °C to 105 °C temperature range 290 nA Standby mode (3 wakeup pins) 1.11 μA Standby mode + RTC 560 nA Stop mode (16 wakeup lines) 1.4 μA Stop mode + RTC 11 μA Low-power run mode down to 4.6 μA in Low-power sleep mode 195 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 34 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 Internal 16 MHz oscillator factory trimmed RC(+/-1%) with PLL option Internal low-power 37 kHz oscillator Internal multispeed low-power 65 kHz to 4.2 MHz oscillator PLL for CPU clock and USB (48 MHz) Pre-programmed bootloader USB and USART supported Up to 116 fast I/Os (102 I/Os 5V tolerant), all mappable on 16 external interrupt vectors Memories 512 KB Flash memory with ECC (with 2 banks of 256 KB enabling RWW capability) 80 KB RAM 16 KB of true EEPROM with ECC 128 Byte backup register LCD driver (except STM32L151xE devices) up to 8x40 segments, contrast adjustment, blinking mode, step-up converter Rich analog peripherals (down to 1.8 V) 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 11x peripheral communication interfaces 1x USB 2.0 (internal 48 MHz PLL) 5x USART 3x SPI 16 Mbits/s (2x SPI with I2S) 2x I2C (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) Development support: serial wire debug, JTAG and trace