32-bit ARM Cortex-M4 CPU core Up to 150 MHz operating frequency, with Memory Protection Unit (MPU) Built-in single-cycle multiplication and hardware division DSP instruction set 64 KB to 256 KB of Flash memory 18 KB of boot code area for Bootloader sLib: Designates a specified main memory area as an executable code secure library area, where code can only be called and not read 32 KB of SRAM 2.6V to 3.6V power supply Power-On Reset (POR), Low-Voltage Reset (LVR), Power Voltage Monitor (PVM) Low-power modes: Sleep, Deep Sleep, and Standby VBAT powers LEXT, ERTC, and 20 32-bit Battery-Powered Registers (BPR) 4 to 25 MHz crystal oscillator (HEXT) Built-in factory-trimmed 48 MHz High-Speed Internal Clock (HICK), 1% accuracy at 25 °C, 2% accuracy from -40 °C to +105 °C PLL flexibly configurable with 31 to 500 multiplication and 1 to 15 division factors 32 kHz crystal oscillator (LEXT) Low-Speed Internal Clock (LICK) One 12-bit 2 MSPS A/D converter, up to 16 external input channels Temperature Sensor (VTS) and Internal Reference Voltage (VINTRV) Two comparators (CMP) Two 7-channel DMA controllers for a total of 14 channels Up to 55 fast GPIO ports All GPIO ports can be mapped to 16 External Interrupts (EXINT) Almost all GPIO ports are 5V input tolerant One 16-bit 7-channel advanced timer, including 3 pairs of complementary PWM outputs, with dead-time control and emergency stop functions Up to five 16-bit timers and two 32-bit timers, each with up to 4 channels for input capture/output compare/PWM or pulse counting and incremental encoder input Two watchdog timers (General-purpose WDT and Windowed WWDT) System Tick Timer: 24-bit down counter ERTC: Enhanced RTC, with auto-wake up, alarm, sub-second accuracy, and hardware calendar, with calibration function Two I2C interfaces, supporting SMBus/PMBus Five USART interfaces; supporting master synchronous SPI and modem control; with ISO7816 interface, LIN, and IrDA Two SPI interfaces (36 Mbits/s), both remappable to half-duplex I2S interfaces CAN interface (2.0B active), with built-in 256-byte dedicated buffer OTGFS full-speed controller with on-chip PHY, with built-in 1280-byte dedicated buffer SDIO interface CRC calculation unit 96-bit Unique ID (UID) Serial Wire Debug (SWD) and JTAG interfaces Temperature range: -40 °C to +105 °C