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Altera_Forum
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13 years ago

voltage of 3.3v not achieved even though programmed

Hello, I am using altera cyclone 3 FPGA for one of my applications. I have programmed the output pins to be 3.3v LVCMOS output(from the PIN Planner). However when I check the output in the scop...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
13 years ago

Are the VCCIO pins for those IO banks connected to 3V3 on your board?

If you're getting 2V5 out then I suspect that your VCCIO pins are actually connected to 2V5 and not 3V3.

Mark.