Hi Rick Hille,
Could you tell me the full name of K20 which you are using?
We don't have the independent pin mux tool for kinetis now, actually, the kinetis pin don't have so many pins like the I.mx, about the mux, you just need to check the K20 datasheet or reference manual,chapter 10.3 Pinout , if you don't want to use the pin, just let the pin use as the default pin mux.
Wish it helps you!
Have a great day,
Jingjing
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