Features
Ultra-low-power platform
– 1.65 V to 3.6 V power supply
– -40 to 125 °C temperature range
– 0.27 μA Standby mode (2 wakeup pins)
– 0.4 μA Stop mode (16 wakeup lines)
– 0.8 μA Stop mode + RTC + 8 KB RAM retention
– 88 μA/MHz in Run mode
– 3.5 μs wakeup time (from RAM)
– 5 μs wakeup time (from Flash memory)
Core: ARM 32-bit -M0+ with MPU
– From 32 kHz up to 32 MHz max.
– 0.95 DMIPS/MHz
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 25 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 RC
– PLL for CPU clock
Pre-programmed bootloader
– USART, SPI supported
Development support
– Serial wire debug supported
Up to 51 fast I/Os (45 I/Os 5V tolerant)