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Altera_Forum
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17 years ago

Voltage on output pin

I have a de2 altera with cyclone ii fpga. When i see the voltage on the oscilloscope of the output pin (expansion header), it is always 3.3 Volts also if i assign in the assignment editor 1.5V, 1....
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
17 years ago

i've read about i/o standards but all the combination of input output voltage bring to 3.3 Volts on output pin of the expansion header