Features：

• Ultra-low-power with FlexPowerControl

– 1.71 V to 3.6 V power supply

– -40 °C to 85/105/125 °C temperature range

– 200 nA in VBAT mode: supply for RTC and32x32-bit backup registers

– 8 nA Shutdown mode (5 wakeup pins)

– 28 nA Standby mode (5 wakeup pins)

– 280 nA Standby mode with RTC

– 1.0 µA Stop 2 mode, 1.28 µA Stop 2 withRTC

– 84 µA/MHz run mode

– Batch acquisition mode (BAM)

– 4 µs wakeup from Stop mode

– Brown out reset (BOR) in all modes exceptshutdown

– Interconnect matrix

• Core: ARM® 32-bit Cortex®-M4 CPU with FPU,Adaptive real-time accelerator (ARTAccelerator™) allowing 0-wait-state executionfrom Flash memory, frequency up to 80 MHz,MPU, 100DMIPS/1.25DMIPS/MHz (Dhrystone2.1), and DSP instructions

• Performance Benchmark

– 1.25 DMIPS/MHz (Drystone 2.1)

– 273.55 Coremark® (3.42 Coremark/MHz @80 MHz)

• Energy Benchmark

– 176.7 ULPBench® score

• Clock Sources

– 4 to 48 MHz crystal oscillator

– 32 kHz crystal oscillator for RTC (LSE)

– Internal 16 MHz factory-trimmed RC (±1%)

– Internal low-power 32 kHz RC (±5%)

– Internal multispeed 100 kHz to 48 MHzoscillator, auto-trimmed by LSE (better than±0.25 % accuracy)

– Internal 48 MHz with clock recovery

– 2 PLLs for system clock, audio, ADC

• RTC with HW calendar, alarms and calibration

• Up to 21 capacitive sensing channels: supporttouchkey, linear and rotary touch sensors

• 11x timers: 1x 16-bit advanced motor-control,1x 32-bit and 2x 16-bit general purpose, 2x 16-bit basic, 2x low-power 16-bit timers (availablein Stop mode), 2x watchdogs, SysTick timer

• Up to 83 fast I/Os, most 5 V-tolerant

• Memories

– Up to 256 KB single bank Flash,proprietary code readout protection

– 64 KB of SRAM including 16 KB withhardware parity check

– Quad SPI memory interface

• Rich analog peripherals (independent supply)

– 1× 12-bit ADC 5 Msps, up to 16-bit withhardware oversampling, 200 µA/Msps

– 2x 12-bit DAC, low-power sample and hold

– 1x operational amplifier with built-in PGA

– 2x ultra-low-power comparators

• 15x communication interfaces

– 1x SAI (serial audio interface)

– 3x I2C FM+(1 Mbit/s), SMBus/PMBus

– 4x USARTs (ISO 7816, LIN, IrDA, modem)

– 3x SPIs (4x SPIs with the Quad SPI)

– CAN (2.0B Active) and SDMMC interface

– SWPMI single wire protocol master I/F– IRTIM (Infrared interface)

• 14-channel DMA controller

• True random number generator

• CRC calculation unit, 96-bit unique ID