72 MHz Cortex-M4 with 256 KB Flash — what it means for the control loop
The MK20DX256VLK7R is a Kinetis K20-series ARM Cortex-M4 MCU clocked at 72 MHz, with 256 KB Flash and 64 KB RAM. The 256 KB Flash holds a moderate firmware image with room for a bootloader and application code.
Industrial temperature grade and peripheral set
Rated for -40°C to 105°C ambient, this part is specced for industrial enclosures, outdoor telecom cabinets, and under-hood automotive-adjacent applications. The 52 GPIOs in an 80-LQFP package leave enough pins for a parallel LCD or external memory via the EBI/EMI interface, plus CANbus for industrial or automotive networks, USB OTG for dual-role host/device, and multiple SPI/I²C/UART channels for sensor or actuator clusters. The 2 KB EEPROM emulation in Flash handles calibration constants without an external serial EEPROM.
Active lifecycle — no LTB pressure
The MK20DX256VLK7R carries an Active lifecycle status. That means no last-time-buy window to plan for, no end-of-life notice on the horizon for this density variant. For a BOM freeze or a production ramp, this part is a stable line item — no allocation-cycle anxiety about forced redesigns. Sourced and quoted to order against an RFQ through independent distribution; availability and current pricing confirmed at quote time.