P2 Eval Board Owners, I need your help!
Could you please unplug the USB cable and remove all the jumpers on your P2 Eval board that surround the P2 chip? Also, remove all accessory boards from the 2x6 headers. Then, could you please measure the resistances between each Vxxxx pin and GND?
The Vxxxx pins are the 2nd and 5th pins on each 1x6 male header that surrounds the P2. It doesn't matter which side you count from. They are the V's in this pattern: IVIIVI
I would think the negative meter probe would go to GND (any of those four GND posts) and the positive meter probe would go to the Vxxxx pin header pin being measured. You'll need to measure with the VIO pin being subjected to the positive voltage. Otherwise, you may wind up measuring the clamp diode to GND, which we don't care about.
If you could report your measurements as such, it would be most helpful:
V0007 = ? ohms
V0815 = ? ohms
V1623 = ? ohms
V2431 = ? ohms
V3239 = ? ohms
V4047 = ? ohms
V4855 = ? ohms
V5663 = ? ohms
We have some trouble with the new silicon, where some VIO pins are shorted to GND (5..20 ohms), somewhat randomly. I am really wondering if the old silicon exhibits these characteristics, at all.