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 85/125 °C temperature range
320 nA in VBAT mode: supply for RTC and 32x32-bit backup registers
25 nA Shutdown mode (5 wakeup pins)
108 nA Standby mode (5 wakeup pins)
426 nA Standby mode with RTC
2.57 μA Stop 2 mode, 2.86 μA Stop 2 with RTC
91 μA/MHz run mode (LDO mode)
37 μA/MHz run mode (at 3.3 V SMPS mode)
Batch acquisition mode (BAM)
5 μs wakeup from Stop mode
Brownout reset (BOR) in all modes except shutdown
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, 100 DMIPS, and DSP instructions
Performance benchmark
1.25 DMIPS/MHz (Drystone 2.1)
273.55 Coremark? (3.42 Coremark/MHz at 80 MHz)
Energy benchmark
279 ULPMark? CP score
80.2 ULPMark? PP score
16 timers: 2x 16-bit advanced motor-control, 2x 32-bit and 5x 16-bit general-purpose, 2x 16-bit basic, 2x low-power 16-bit timers (available in Stop mode), 2x watchdogs, SysTick timer
RTC with HW calendar, alarms, and calibration
Up to 136 fast I/Os, most 5 V-tolerant, up to 14 I/Os with independent supply down to 1.08 V
Dedicated Chrom-ART Accelerator for enhanced graphic content creation (DMA2D)
8- to 14-bit camera interface up to 32 MHz (black & white) or 10 MHz (color)
Encryption hardware accelerator: AES (128/256-bit key), HASH (SHA-256)
Memories
1 MB Flash, 2 banks read-while-write, proprietary code readout protection
320 KB of SRAM including 64 KB with hardware parity check
External memory interface for static memories supporting SRAM, PSRAM, NOR, and NAND memories
Dual-flash Quad SPI memory interface
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
3 PLLs for system clock, USB, audio, ADC
LCD 8× 40 or 4× 44 with step-up converter
Up to 24 capacitive sensing channels: support touchkey, linear, and rotary touch sensors
4x digital filters for sigma-delta modulator
Rich analog peripherals (independent supply)
3× 12-bit ADCs 5 Msps, up to 16-bit with hardware oversampling, 200 μA/Msps
2x 12-bit DAC output channels, low-power sample, and hold
2x operational amplifiers with built-in PGA
2x ultra-low-power comparators
20x communication interfaces
USB OTG 2.0 full-speed, LPM, and BCD
2x SAIs (serial audio interface)
4x I2C FM+(1 Mbit/s), SMBus/PMBus
5x U(S)ARTs (ISO 7816, LIN, IrDA, modem)
1x LPUART
3x SPIs (4x SPIs with the Quad SPI)
2x CANs (2.0B Active) and SDMMC
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?
