Features
• Ultra-low-power with FlexPowerControl
– 1.71 V to 3.6 V power supply
– -40 °C to 85/125 °C temperature range
– 200 nA in VBAT mode: supply for RTC and 32x32-bit backup registers
– 22 nA Shutdown mode (5 wakeup pins)
– 106 nA Standby mode (5 wakeup pins)
– 348 nA Standby mode with RTC
– 2.16 μA Stop 2 mode, 2.23 μA with RTC
– 84 μA/MHz run mode
– 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 (ART Accelerator™) allowing 0-wait-state execution from 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
– 174.5 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 MHz oscillator, auto-trimmed by LSE (better than ±0.25 % accuracy)
– Internal 48 MHz with clock recovery
– 2 PLLs for system clock, audio, ADC
• Up to 83 fast I/Os, most 5 V-tolerant
• RTC with HW calendar, alarms and calibration
• Up to 21 capacitive sensing channels: support touchkey, linear and rotary touch sensors
• 12x timers: 1x 16-bit advanced motor-control, 1x 32-bit and 3x 16-bit general purpose, 2x 16-bit basic, 2x low-power 16-bit timers (available in Stop mode), 2x watchdogs, SysTick timer
• Memories
– 512 KB single bank Flash, proprietary code readout protection
– 160 KB of SRAM including 32 KB with hardware parity check
– Quad SPI memory interface
• Rich analog peripherals (independent supply)
– 1× 12-bit ADC 5 Msps, up to 16-bit with hardware oversampling, 200 μA/Msps
– 1x 12-bit DAC, low-power sample and hold
– 1x operational amplifier with built-in PGA
– 2x ultra-low-power comparators
– Accurate 2.5 V or 2.048 V reference voltage buffered output
• AES: 128/256-bit key encryption hardware accelerator
• 16x communication interfaces
– USB 2.0 full-speed crystal less solution with LPM and BCD
– 1x SAI (serial audio interface)
– 4x I2C FM+(1 Mbit/s), SMBus/PMBus
– 3x USARTs (ISO 7816, LIN, IrDA, modem)
– 1x UART (LIN, IrDA, modem)
– 3x SPIs (4x SPIs with the Quad SPI)
– CAN (2.0B Active) and SDMMC interface
– IRTIM (Infrared interface)
• 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™