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Altera_Forum
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14 years ago

Why MAXII CPLD only output 1.6v when high (3.3V LVTTL)

VCCIO and VCCINT are both 3.3v, and the pins are set to 3.3v LVTTL in quartusII, but the output is only 1.6v when high after I downloaded my program into the device(epm240t100c5) Could any bod...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
14 years ago

Nothing, No load connected.

I use VOM（Volt-Ohm-Milliammeter）to the measue the Voltage. And the output with pulse, I suspect the pulse cause the VOM（Volt-Ohm-Milliammeter）measurement not accurate. How do you think?