Features：

Includes ST state-of-the-art patentedtechnology

• Ultra-low-power with FlexPowerControl

– 1.71 V to 3.6 V power supply

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

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

– 16 nA Shutdown mode (4 wakeup pins)

– 32 nA Standby mode (4 wakeup pins)

– 245 nA Standby mode with RTC

– 0.7 µA Stop 2 mode, 0.95 µA with RTC

– 79 µA/MHz run mode (LDO Mode)

– 28 μA/MHz run mode (@3.3 V SMPSMode)

– Batch acquisition mode (BAM)

– 4 µs wakeup from Stop mode

– Brown out reset (BOR)

– 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 and DSP instructions

• Performance benchmark

– 1.25 DMIPS/MHz (Drystone 2.1)

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

• Energy benchmark

– 442 ULPMark-CP®

– 165 ULPMark-PP®

• 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

– PLL for system clock

• Up to 52 fast I/Os, most 5 V-tolerant

• RTC with HW calendar, alarms and calibration

• Up to 12 capacitive sensing channels: supporttouchkey, linear and rotary touch sensors

• 10x timers: 1x 16-bit advanced motor-control,1x 32-bit and 2x 16-bit general purpose, 1x 16-bit basic, 2x low-power 16-bit timers (availablein Stop mode), 2x watchdogs, SysTick timer

• Memories

– 128 KB single bank flash, proprietary codereadout protection

– 40 KB of SRAM including 8 KB withhardware parity check

– Quad SPI memory interface with XIPcapability

• Rich analog peripherals (independent supply)

– 2x 12-bit ADC 5 Msps, up to 16-bit withhardware oversampling, 200 µA/Msps

– 1x operational amplifier with built-in PGA

– 1x ultra-low-power comparator

• 12x communication interfaces

– USB 2.0 full-speed crystal less solutionwith LPM and BCD

– 3x I2C FM+(1 Mbit/s), SMBus/PMBus

– 3x USARTs (ISO 7816, LIN, IrDA, modem)

– 1x LPUART (Stop 2 wake-up)

– 2x SPIs (and 1x Quad SPI)

– IRTIM (Infrared interface)