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Altera_Forum
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16 years ago

FPGA is hot

I'm using EP1C6Q240 FPGA, after programming it , the current for 3V3 was about 400mA, working OK, after several weeks, the current went to about 800mA and FPGA was getting hot, but it's still working...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
16 years ago

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There are two issues, that are likely to cause excessive current consumption:

- floating input pins

Clock pins don't have an option to set a defined level by configuration and must be externally terminated. Other unused pins should be e.g. configured as input with weak pull-up.

- shorted output pins

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Hi! FvM!

You said that "shorted output pins" is a possible issue to cause excessive current consumption . I can't undersant that . can you descript it in detail?

many thanks!