NXP Semiconductors Data Sheet: Technical Data K66.
MK66FN2M0VMD18 - 180MHz ARM Cortex-M4F Microcontroller
NXP Semiconductors Data Sheet: Technical Data K66P144M180SF5V2 Rev. 4, 04/2017 Kinetis K66 Sub-Family 180 MHz ARM® Cortex®-M4F Microcontroller. The .