Quote Originally Posted by mister_e View Post
There's different school of thought on that, but usually what I do is to set all unused pin to input, and tie them directly to gnd. If I feel that I may need those i/o later, I may use resistors or jumpers to tie them to gnd.

Some will set unused I/o as output, assign a level and let them float. In conjunction with a nice ground plane this might work.
Mister e, Thanks. I tend to not like to have loose ends. I like the idea of tieing unused pins to ground. It's a little more design work but like you mentioned if you need it in the future it's much cleaner removing a resistor then trying to drill down into the board were no pad exists.
Thanks
David