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Spartan chip expulses an extrange substance
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nnadal



Joined: 22 Jan 2009
Posts: 1
Post22 Jan 2009 6:47   

Spartan chip expulses an extrange substance
I have a new design with a XCS05 based on a well proved design where the fpga runs during few minutes and then fails while expulses an extrange substance from inside the VCC pins, in some pads is like spounge-white in other is black, the chip runs cold, never warms up. I have a lot of experience on this chip and I have never seen that. Then the chip appears to have a few inputs crossed to GND and worked never more. Me and other persons have spent 3 days testing VCC and GND pads in this dessign and the voltage levels were ok, the prototype worked well (this is the first series PCB). Any Idea?
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