STMicroelectronics STM32F401RD

The STMicroelectronics STM32F401RD is a Core - ARM 32-bit Cortex-M4 CPU with FPU - Adaptive real-time accelerator (ART Accelerator) - 84 MHz maximum frequency, 105 DMIPS/1.25 DMIPS/MHz - Memory protection unit - DSP instructions Memories - Up to 512 Kbytes of Flash memory - 96 Kbytes of SRAM Clock, reset and supply management - 1.7 V (PDR OFF) or 1.8 V (PDR ON) to 3.6 V application supply and I/Os - POR, PDR, PVD and BOR - 4 to 26 MHz crystal oscillator - Internal 16 MHz factory-trimmed RC - 32 kHz oscillator for RTC with calibration - Internal 32 kHz RC with calibration 1x12-bit, 2.4 MSPS A/D converter: up to 10 channels General-purpose DMA - 16-stream DMA controllers with FIFOs and burst support Up to 10 timers - up to six 16-bit - two 32-bit timers up to 84 MHz - two watchdog timers (independent and window) Debug mode - Serial wire debug (SWD) & JTAG - Cortex-M4 Embedded Trace Macrocell Up to 81 I/O ports with interrupt capability - All IO ports 5 V tolerant - Up to 78 fast I/Os up to 42 MHz Up to 12 communication interfaces - Up to 3 x I2C interfaces - Up to 3 USARTs (2 x 10.5 Mbit/s, 1 x 5.25 Mbit/s), ISO 7816, LIN, IrDA, modem control) - Up to 4 SPIs (up to 42 Mbits/s at fCPU = 84 MHz) - SDIO interface Advanced connectivity - USB 2.0 full-speed device/host/OTG controller with on-chip PHY CRC calculation unit 96-bit unique ID RTC: subsecond accuracy, hardware calendar.