Features：

• Ultra-low-power with FlexPowerControl

– 1.71 V to 3.6 V power supply

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

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

– 30 nA Shutdown mode (5 wakeup pins)

– 120 nA Standby mode (5 wakeup pins)

– 420 nA Standby mode with RTC

– 1.1 µA Stop 2 mode, 1.4 µA Stop 2 withRTC

– 100 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

• Clock Sources

– 4 to 48 MHz crystal oscillato

– 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)

– 3 PLLs for system clock, USB, audio, ADC

• RTC with HW calendar, alarms and calibration

• LCD 8 × 40 or 4 × 44 with step-up converter

• Up to 24 capacitive sensing channels: supporttouchkey, linear and rotary touch sensors

• 16x timers: 2 x 16-bit advanced motor-control,2 x 32-bit and 5 x 16-bit general purpose, 2x16-bit basic, 2x low-power 16-bit timers(available in Stop mode), 2x watchdogs,SysTick timer

• Up to 114 fast I/Os, most 5 V-tolerant, up to 14I/Os with independent supply down to 1.08 V

• Memories

– Up to 1 MB Flash, 2 banks read-whilewrite, proprietary code readout protection

– Up to 128 KB of SRAM including 32 KBwith hardware parity check

– External memory interface for staticmemories supporting SRAM, PSRAM,NOR and NAND memories

– Quad SPI memory interface

• 4x digital filters for sigma delta modulator

• Rich analog peripherals (independent supply)

– 3× 12-bit ADC 5 Msps, up to 16-bit withhardware oversampling, 200 µA/Msps

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

– 2x operational amplifiers with built-in PGA

– 2x ultra-low-power comparators

• 18x communication interfaces

– USB OTG 2.0 full-speed, LPM and BCD

– 2x SAIs (serial audio interface)

– 3x I2C FM+(1 Mbit/s), SMBus/PMBus

– 6x 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

• 14-channel DMA controller

• True random number generator

• CRC calculation unit, 96-bit unique ID

• Development support: serial wire debug(SWD), JTAG, Embedded Trace Macrocell™