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 Cortex®-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)
• Memories
– Up to 64 KB Flash memory with ECC
– 8KB RAM
– 2 KB of data EEPROM with ECC
– 20-byte backup register
– Sector protection against R/W operation
• LCD driver for up to 8×28segments
– Support contrast adjustment
– Support blinking mode
– Step-up converted on board
• Rich Analog peripherals
– 12-bit ADC 1.14 Msps up to 16 channels (down
to 1.65 V)
– 12-bit 1 channel DAC with output buffers (down
to 1.8 V)
– 2x ultra-low-power comparators (window mode
and wake up capability, down to 1.65 V)
• Up to 24 capacitive sensing channels supporting
touchkey, linear and rotary touch sensors
• 7-channel DMA controller, supporting ADC, SPI,
I2C, USART, DAC, Timers
• 8x peripheral communication interfaces
– 1x USB 2.0 crystal-less, battery charging
detection and LPM
– 2x USART (ISO 7816, IrDA), 1x UART (low
power)
– Up to 4x SPI 16 Mbits/s
– 2x I2C (SMBus/PMBus)
• 9x timers: 1x 16-bit with up to 4 channels, 2x 16-bit
with up to 2 channels, 1x 16-bit ultra-low-power
timer, 1x SysTick, 1x RTC, 1x 16-bit basic for DAC,
and 2x watchdogs (independent/window)
• CRC calculation unit, 96-bit unique ID
• True RNG and firewall protection
• All packages are ECOPACK® 2