ARM 32-bit Cortex-M4F CPU with FPU Up to 240 MHz operating frequency, with Memory Protection Unit (MPU), built-in single-cycle multiplication and hardware division Built-in Floating Point Unit (FPU) with DSP instruction set Internal flash program/data memory from 256 KB to 1024 KB sLib: Sets a specified main memory area as an executable secure library area, where code can only be called and not read SPIM interface: Provides an additional external SPI flash program/data memory interface up to 16 MB Up to 96 + 128 KB of SRAM External Memory Controller (XMC) with 2 chip selects, supporting multiplexed signal NOR/PSRAM and NAND memory Parallel LCD interface, compatible with 8080/6800 modes 2.6 to 3.6 V supply and I/O pins Power-on/Power-down Reset (POR/PDR), Programmable Voltage Detector (PVD) 4 to 25 MHz crystal oscillator Embedded factory-calibrated 48 MHz RC oscillator (1% accuracy at 25 °C, 2.5% accuracy from -40 °C to +105 °C), with Automatic Clock Calibration (ACC) function Embedded calibrated 40 kHz RC oscillator Calibrated 32 kHz crystal oscillator Sleep, Stop, and Standby modes VBAT powers the RTC and 42 16-bit backup registers 3 12-bit A/D converters, 0.5 μs conversion time (up to 16 input channels) Conversion range: 0 to 3.6 V Three sets of sample and hold functions Temperature sensor 2 12-bit D/A converters 14-channel DMA controller Supported peripherals: Timers, ADC, DAC, SDIO, I2S, SPI, I2C, and USART Serial Wire Debug (SWD) and JTAG interfaces Cortex-M4F Embedded Trace Macrocell (ETM) 37/51/80 multifunctional bidirectional I/O ports, all I/O ports can be mapped to 16 external interrupts; almost all I/O ports are 5V input tolerant All I/O ports are fast I/O, with register access speed up to fAHB Up to 8 16-bit timers + 2 32-bit timers, each timer has up to 4 channels for input capture/output compare/PWM or pulse counting and incremental encoder input Up to 2 16-bit advanced control timers with dead-time control and emergency brake for motor control 2 watchdog timers (independent and windowed) System time timer: 24-bit down-counter 2 16-bit basic timers for driving DAC Up to 3 I2C interfaces (supporting SMBus/PMBus) Up to 8 USART interfaces (supporting ISO7816, LIN, IrDA interfaces, and modem control) Up to 4 SPI interfaces (50 Mbit/s), all 4 can be multiplexed as I2S interfaces, with I2S2/I2S3 supporting full-duplex Up to 2 CAN interfaces (2.0B active) USB 2.0 full-speed device interface, supporting crystal-less operation Up to 2 SDIO interfaces