• Ultra-low-power platform – 1.65 V to 3.6 V power supply – -40°C to 85°C/105°C temperature range – 0.3 µA Standby mode (3 wakeup pins) – 0.9 µA Standby mode + RTC – 0.57 µA Stop mode (16 wakeup lines) – 1.2 µA Stop mode + RTC – 9 µA Low-power run mode – 214 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 • Reset and supply management – Ultra-safe, low-power 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 factorytrimmed 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 – USART supported • Development support – Serial wire debug supported – JTAG and trace supported • Up to 83 fast I/Os (73 I/Os 5V tolerant), all mappable on 16 external interrupt vectors • Memories – Up to 128 KB Flash with ECC – Up to 16 KB RAM