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Altera_Forum's avatar
Altera_Forum
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13 years ago

can't find the reason Stratix IV GX short-circuited between VCC and GND

hello everyone: i have some questions about Stratix IV GX the first time we configurate the FPGA in jtag, it's display configurate failed at 90%。We check the pcb and find that three pull-...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
13 years ago

VCCPT has an abolute maximum of 1.8V while VCCIO has 3.9V. So it's possible that a supply surge damages VCCPT and doesn't affect VCCIO. But's that's just a guess. Besides checking your design thoroughly, you should definitely ask Altera for their suggestions.