Features

Ultra-low-power with FlexPowerControl

• 1.71 V to 3.6 V power supply

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

• Batch acquisition mode (BAM)

• 150 nA in VBAT mode: supply for RTC and 32x32-bit backup registers

• 22 nA Shutdown mode (5 wakeup pins)

• 42 nA Standby mode (5 wakeup pins)

• 190 nA Standby mode with RTC

• 2.95 μA Stop 2 with RTC

• 110 μA/MHz Run mode (LDO mode)

• 41 μA/MHz Run mode (@ 3.3 V SMPS mode)

• 5 μs wakeup from Stop mode

• Brownout reset (BOR) in all modes except Shutdown

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 120 MHz, MPU, 150 DMIPS/1.25 DMIPS/MHz (Dhrystone 2.1), and DSP instructions

Memories

• 1-Mbyte Flash memory, 2 banks read-whilewrite, proprietary code readout protection

• 320 Kbytes of SRAM including 64 Kbytes with hardware parity check

• External memory interface for static memories supporting SRAM, PSRAM, NOR, NAND and FRAM memories

• 2 x Octo-SPI memory interfaces

General-purpose inputs/outputs

• Up to 136 fast I/Os, most 5 V-tolerant, up to 14

I/Os with independent supply down to 1.08 V

Performance benchmark

• 1.25 DMIPS/MHz (Drystone 2.1)

• 409.20 CoreMark® (3.41 CoreMark/MHz @120 MHz)

Energy benchmark

• 285 ULPMark™CP score

Up to 24 capacitive sensing channels

• Support touchkey, linear and rotary touch sensors

Clock management

• 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