What this MCU is and where it fits
The NXP MK20DX256VLK10 is a 32-bit ARM Cortex-M4 microcontroller clocked at 100 MHz with a single-core architecture. It carries 256 KB of Flash program memory and 64 KB of RAM, plus 4 KB of EEPROM.
100 MHz Cortex-M4 — what it means for the control loop
The 100 MHz core speed handles a single-axis servo loop or a CANopen gateway. The DSP extension and single-precision FPU handle fixed-point and floating-point math without a separate coprocessor.
Memory map and peripheral set
256 KB Flash and 64 KB RAM support a FreeRTOS application with a TCP/IP stack and a modest data logger. The 4 KB EEPROM holds calibration constants and boot parameters without external storage. On the connectivity side: CANbus, USB OTG, multiple SPI/I²C/UART, and an external bus interface (EBI/EMI) for expanding memory or an FPGA. The 27-channel 16-bit ADC and one 12-bit DAC cover analog front-end needs for current sensing and setpoint generation.