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
• 150 nA Shutdown mode (24 wake-up pins)
• 195 nA Standby mode (24 wake-up pins)
• 480 nA Standby mode with RTC
• 2 μA Stop 3 mode with 40-Kbyte SRAM
• 8.2 μA Stop 3 mode with 2.5-Mbyte SRAM
• 4.65 μA Stop 2 mode with 40-Kbyte SRAM
• 17.5 μA Stop 2 mode with 2.5-Mbyte SRAM
• 18.5 μA/MHz Run mode at 3.3 V
Core
• Arm® 32-bit Cortex®-M33 CPU with
TrustZone®, MPU, DSP, and FPU
ART Accelerator
• 32-Kbyte ICACHE allowing 0-wait-state
execution from Flash and external memories:
frequency up to 160 MHz, 240 DMIPS
• 16-Kbyte DCACHE1 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)
• 369 ULPMark™-CP
• 89 ULPMark™-PP
• 47.2 ULPMark™-CM
• 120000 SecureMark™-TLS
Memories
• Up to 4-Mbyte Flash memory with ECC, 2
banks read-while-write, including 512 Kbytes
with 100 kcycles
• With SRAM3 ECC off: 2514-Kbyte RAM
including 66 Kbytes with ECC
• With SRAM3 ECC on: 2450-Kbyte RAM
including 322 Kbytes with ECC
• External memory interface supporting SRAM,
PSRAM, NOR, NAND, and FRAM memories
• 2 Octo-SPI memory interfaces
• 16-bit HSPI memory interface up to 160 MHz
Rich graphic features
• Neo-Chrom GPU (GPU2D) accelerating any
angle rotation, scaling, and perspective correct
texture mapping
• 16-Kbyte DCACHE2
• Chrom-ART accelerator (DMA2D) for smooth
motion and transparency effects
• Chrom-GRC (GFXMMU) allowing up to 20 %
of graphic resources optimization
• MIPI® DSI Host controller with two DSI lanes
running at up to 500 Mbit/s each
• LCD-TFT controller (LTDC)
• Digital camera interface
General-purpose input/outputs
• Up to 156 fast I/Os with interrupt capability
most 5V-tolerant and up to 14 I/Os with
independent supply down to 1.08 V
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
• 5 PLLs for system clock, USB, audio, ADC, DSI
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
Up to 17 timers, 2 watchdogs and RTC
• 19 timers: 2 16-bit advanced motor-control,
4 32-bit, 3 16-bit general purpose, 2 16-bit
basic, 4 low-power 16-bit (available in Stop
mode), 2 SysTick timers, and 2 watchdogs
• RTC with hardware calendar, alarms, and
calibration
Up to 25 communication peripherals
• 1 USB Type-C®/USB power delivery controller
• 1 USB OTG high-speed with embedded PHY
• 2 SAIs (serial-audio interface)
• 6 I2C FM+(1 Mbit/s), SMBus/PMBus™
• 7 USARTs (ISO 7816, LIN, IrDA, modem)
• 3 SPIs (6x SPIs with OCTOSPI/HSPI)
• 1 CAN FD controller
• 2 SDMMC interfaces
• 1 multi-function digital filter (6 filters) + 1 audio
digital filter with sound-activity detection
• Parallel synchronous slave interface
Mathematical coprocessor
• CORDIC for trigonometric functions
acceleration
• FMAC (filter mathematical accelerator)
Rich analog peripherals (independent
supply)
• 2 14-bit ADC 2.5-Msps with hardware
oversampling
• 1 12-bit ADC 2.5-Msps, with hardware
oversampling, autonomous in Stop 2 mode
• 12-bit DAC (2 channels), low-power sample,
and hold, autonomous in Stop 2 mode
• 2 operational amplifiers with built-in PGA
• 2 ultra-low-power comparators