Features
Includes ST state-of-the-art patented technology
• 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 and 32x32-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 with RTC
– 84 μA/MHz run mode (LDO Mode)
– 36 μA/MHz run mode (@3.3 V SMPS 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
– 347 ULPMark™ CP score
– 121 ULPMark™ PP 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, USB, audio, ADC
• Up to 83 fast I/Os, most 5 V-tolerant
• RTC with HW calendar, alarms and calibration
• LCD 8× 40 or 4× 44 with step-up converter
• Up to 21 capacitive sensing channels: support touchkey, 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 (available in Stop mode), 2x watchdogs, SysTick timer
• Memories
– Up to 256 KB single bank flash, proprietary code readout protection
– 64 KB of SRAM including 16 KB with hardware parity check
– Quad SPI memory interface
• Rich analog peripherals (independent supply)
– 1x 12-bit ADC 5 Msps, up to 16-bit with hardware oversampling, 200 μA/Msps
– 2x 12-bit DAC output channels, low-power sample and hold
– 1x operational amplifier with built-in PGA
– 2x ultra-low-power comparators
• 17x communication interfaces
– USB 2.0 full-speed crystal less solution with LPM and BCD
– 1x SAI (serial audio interface)
– 3x I2C FM+(1 Mbit/s), SMBus/PMBus
– 4x USARTs (ISO 7816, LIN, IrDA, modem)
– 1x LPUART (Stop 2 wake-up)
– 3x SPIs (and 1x 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
• Development support: serial wire debug (SWD), JTAG, Embedded Trace Macrocell™
• All packages are ECOPACK2 compliant