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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

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Are the system and operator properly grounded when the boards are inserted? There could be an ESD when the connectors touch. You can avoid it by having everything grounded before insertion, or ensuring that the boards ground touch before any other contact.

Other than that I think too that there could be a problem with the voltage supply.

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There should not be have ESD problem when insert the board,because the board only power on when delay 5 second after insert the board.All the board are in one metal case and case grounded well.