100 MHz Cortex-M4 — what it buys you on the Kinetis K20 line
The MK22FN128VLH10 is an NXP Kinetis K20 series ARM Cortex-M4 MCU running at 100 MHz, with 128 KB Flash and 24 KB RAM. That core speed positions it for control loops that need DSP extensions (single-cycle MAC, SIMD) without jumping to a higher-power part.
Package and I/O — board-fit note
64-LQFP (10x10 mm) with 40 general-purpose I/O. That pin count is typical for a compact controller with USB plus a handful of serial peripherals. Surface-mount only; no through-hole variant. The tray package is standard for production reflow — no special handling beyond normal MSL precautions.