48 MHz Cortex-M0+ with integrated mixed-signal peripherals
The NXP MKL46Z256VMC4 is a 32-bit ARM Cortex-M0+ MCU from the Kinetis KL4 series, clocked at 48 MHz. It packs 256 KB of Flash and 32 KB of RAM, plus a USB OTG controller with on-chip transceiver — enough for a sensor hub or portable instrument that needs both analog capture and host connectivity.
Active production — no LTB pressure on this BOM line
NXP lists the MKL46Z256VMC4 as Active. No last-time-buy notice, no end-of-life window on the horizon. For a sourcing desk that needs to freeze a BOM for a multi-year production run, this part does not carry obsolescence risk today.