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Altera_Forum
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16 years ago

Bad Pins

I am a rookie. I am working on my fourth MAX II design. I am using Quartus II Version 9 SP2. The problem I am having is that several pins on EPM1270 do not work. For example. I have four test...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
16 years ago

Here is the situation:

The PC board has some analog circuitry that operates form a 5 VDC rail. The footprint for one of the components was incorrect, and it inadvertently fed current (from the 5V rail) into the 3.3V rail. I observed the 3.3V rail going up to 3.6V. I never saw it go higher than that. I assumed that this had not damaged the FPGA.

But today I replaced it and I think it is working properly now.

I certainly appreciate all the help. It is very comforting to know that this community is so accessible.

Thanks-

John