What to do with unused pins is always a long and endless debate. Personnaly i set them as input and use external resistors OR i tie them to GND (or VSS) via 0 ohms jumper or not. YUP, i still use the old method. Same thing for CMOS or else IC. All input to somewhere.
If the unit is not powered, the pin is not set as output so MAY act as a big antenna waiting for the next ESD... so MAY cause some problem one day or another. BUT if you consider the board layout + enclosure insulation it give you another point of view.
It's up to you to make your own decision.
Last edited by mister_e; - 11th November 2006 at 19:26.
Steve
It's not a bug, it's a random feature.
There's no problem, only learning opportunities.
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