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Altera_Forum's avatar
Altera_Forum
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15 years ago

CPLD EPM240T Serious Burn down!!

Hi,I met a very bad problem when I use CPLD EPM240T. (1) Environment : in this project,it have 10 IO board with EPM240T,all these board connected through one back board.Between these EPM240T,t...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
15 years ago

I'm just telling that because I ran into this problem a few years ago on an industrial equipment. The box was metallic and well grounded, but not the operator. If the operator has a high static charge, when he/she takes the board it will be charged too. When inserting the board, both the operator and the board will suddenly discharge into the ground through the box, using the path of least resistance.

Did you check the power supply with a scope at power on, just to be sure that you don't have a spike at power on?