100 MHz Cortex-M4 with 256 KB Flash — what it delivers
The MK20DX256VMC10: 32-bit ARM Cortex-M4 MCU, 100 MHz, 256 KB Flash, 64 KB SRAM, 4 KB EEPROM. Rated -40 to 105 °C. The 38-channel 16-bit ADC and two 12-bit DACs cover analog sensor inputs and control-loop setpoints without an external converter.
Industrial temperature range — why it matters for the BOM
The -40 to 105 °C operating range means this MCU can sit in an enclosure near a motor drive or on a factory floor without a heatsink or forced air. The 100 MHz core at that temperature corner still holds timing for the USB and CAN buses — no derating required for the listed peripherals. Internal oscillator covers UART and I²C timing.
Memory and storage — Flash, SRAM, EEPROM
The 64 KB SRAM leaves headroom for packet buffers and a few kilobytes of heap. The 4 KB EEPROM emulation (dedicated array) stores calibration constants or fault logs without wearing the Flash.