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Altera_Forum's avatar
Altera_Forum
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15 years ago

Same logic high ,but different voltage

Hi,guys. So why different pins have different voltage, while they are all logic high. (In my experiment,one is 1.14V, the other is 3.3V) Appreciate for any reply
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
15 years ago

Unfortunately, almost any necessary information is missing from your question: VCCIO, I/O standard, used device, connected load. You don't even tell if 1.14V is within specified Voh range for the respective IO standard.