Some one suggested MK64FX512xxx12, but it does not have supported boards for device.
Hi Kevin:
If you need SDK for MK64FX512, please download it from
https://mcuxpresso.nxp.com/en/select
Unfortunately, MCUXpresso SDK not support MK60FX512. Please check below picture about the supported K6x products.
MK64FX512xxx12 is similar to MK60FX512.
Regards
Daniel