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 +85/125 °C temperature range
• Low-power background-autonomous mode
(LPBAM): autonomous peripherals with DMA,
functional down to Stop 2 mode
• VBAT mode: supply for RTC, 32 x 32-bit backup
registers and 2-Kbyte backup SRAM
• 90 nA Shutdown mode (23 wake-up pins)
• 200 nA Standby mode (23 wake-up pins)
• 370 nA Standby mode with RTC
• 1.4 μA Stop 3 mode with 16-Kbyte SRAM
• 2.2 μA Stop 3 mode with full SRAM
• 3.0 μA Stop 2 mode with 16-Kbyte SRAM
• 4.6 μA Stop 2 mode with full SRAM
• 16.3 μA/MHz Run mode @ 3.3 V
Core
• Arm® 32-bit Cortex®-M33 CPU with
TrustZone®, MPU, DSP, and FPU
ART Accelerator
• 8-Kbyte instruction cache allowing 0-wait-state
execution from flash and external memories:
up to 160 MHz, 240 DMIPS
• 4-Kbyte data cache for external memories
Power management
• Embedded regulator (LDO) and SMPS
step-down converter supporting switch
on-the-fly and voltage scaling
Benchmarks
• 1.5 DMIPS/MHz (Drystone 2.1)
• 651 CoreMark® (4.07 CoreMark®/MHz)
• 464 ULPMark™-CP
• 125 ULPMark™-PP
• 54 ULPMark™-CM
• 137000 SecureMark™-TLS
Memories
• Up to 512-Kbyte flash memory with ECC, 2
banks read-while-write, and 100 kcycles
• 274-Kbyte SRAM including up to 64-Kbyte
SRAM with ECC ON
• 1 Octo-SPI memory interface
Security
• Arm® TrustZone® and securable I/Os,
memories and peripherals
• Flexible life cycle scheme with RDP and
password protected debug
• Root of trust thanks to unique boot entry and
secure hide protection area (HDP)
• Secure firmware installation (SFI) thanks to
embedded root-secure services (RSS)
• Secure firmware upgrade support with TF-M
• HASH hardware accelerator
• True random number generator, NIST
SP800-90B compliant
• 96-bit unique ID
• 512-byte OTP (one-time programmable)
• Active tampers
Clock management
• 4 to 50 MHz crystal oscillator
• 32 kHz crystal oscillator for RTC (LSE)
• Internal 16 MHz factory-trimmed RC (±1%)
• Internal low-power 32 kHz RC (±5%)
• 2 internal multispeed 100 kHz to 48 MHz
oscillators, including one auto-trimmed by LSE
(better than ±0.25% accuracy)
• Internal 48 MHz with clock recovery
• 3 PLLs for system clock, USB, audio, ADC
General-purpose input/outputs
• Up to 82 fast I/Os with interrupt capability most
5V-tolerant and up to 14 I/Os with independent
supply down to 1.08 V
Up to 17 timers and 2 watchdogs
• 2 16-bit advanced motor-control, 4 32-bit,
5 16-bit, 4 low-power 16-bit (available in Stop
mode), 2 SysTick timers and 2 watchdogs
• RTC with hardware calendar and calibration
Up to 19 communication peripherals
• 1 USB full-speed selectable host or device
controller
• 1 SAI (serial-audio interface)
• 4 I2C FM+(1 Mbit/s), SMBus/PMBus®
• 5 USARTs (ISO 7816, LIN, IrDA, modem)
• 3 SPIs (4x SPIs with OCTOSPI)
• 1 CAN FD controller
• 1 SDMMC interface
• 1 multi-function digital filter (2 filters)+ 1 audio
digital filter with sound-activity detection
• Parallel synchronous slave interface
16- and 4-channel DMA controllers,
functional in Stop mode
Graphic features
• 1 digital camera interface
Mathematical co-processor
• CORDIC for trigonometric functions
acceleration
• Filter mathematical accelerator (FMAC)
Up to 20 capacitive sensing channels
• Support touch key, linear and rotary touch
sensors
Rich analog peripherals (independent
supply)
• 14-bit ADC 2.5-Msps with hardware
oversampling
• 12-bit ADC 2.5-Msps, with hardware
oversampling, autonomous in Stop 2 mode
• 2 12-bit DAC, low-power sample and hold
• 1 operational amplifier with built-in PGA
• 1 ultra-low-power comparator