Are there any expansion boards out there that use the kinetis specific I/O pins ?
Hmmm, so is a good document describing the inner row of pins ?
Hello,
not sure what you mean with Kinetis specific I/O pins? Or do you mean the inner rows? They make sense if you develop your own board. I'm not aware of any commercial boards which use them. The outer 'standard' rows can be used with all the 'Arduino' shields as long they are designed to work with 3.3V logic levels.
I hope this helps,
Erich