•  CPU core

― 32-bit ARM Cortex-M4 core + FPU, single-cycle hardware multiply instructions, support DSP instructions and MPU

― Built-in 8KB instruction Cache, support Flash acceleration unit execution program 0 wait

― Run up to 144MHz, 180DMIPS

•  Encrypted memory

― Up to 512KByte embedded Flash memory, support encrypted storage, partition management and data protection, support hardware ECC verification, 100,000 erasing times, 10 years data retention

― 144KByte embedded SRAM (including 16KByte Retention RAM), supporting hardware parity check

•  Low power management

― Stop0 mode: 150uA, RTC Run, all SRAM retained, all IO retained, 20us fast wake-up

― Stop2 mode: 10uA, RTC Run, 16KByte Retention SRAM retention, CPU register retention, all IO retention, 40us fast wake-up

― Standby mode: 3uA, 84 backup registers are retained, all IOs are retained, optional RTC Run, 16KByte Retention SRAM retention, support VBAT pin independent power supply, 100us fast wake-up

•  Clock

― 4MHz~32MHz external high-speed crystal

― 32.768KHz external low-speed crystal

― Internal high-speed RC 8MHz

― Internal low-speed RC 40KHz

― Built-in high-speed PLL

― Supports one-way clock output, which can be configured with system clock, HSE, HSI, or PLL frequency division output

•  Reset

― Supports power on, power down, brown-out, and external pin reset

― Support watchdog reset

•  Up to 97 GPIOs with multiplexing function. The maximum flip speed is 50MHz. Most GPIO supports 5V voltage resistance.

•  Communication interface

― 7x U(S)ART interfaces with speeds up to 4.5Mbps, including 3x USART interfaces (supporting ISO7816, IrDA, LIN) and 4x UART interfaces

― 3x SPI interfaces with speeds up to 36MHz, two of which support I2S

― 1x QSPI interface with speeds up to 144Mbps

― 4x I2C interfaces with speeds up to 1MHz, which can be configured in master/slave mode and support dual address response in slave mode

― 1x USB2.0 Full Speed Device port

― 2x CAN 2.0B bus interfaces

― 1x SDIO interface, supporting SD/MMC format