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Altera_Forum's avatar
Altera_Forum
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15 years ago

Problem with the pin of the character LCD on Cyclone III FPGA Development Kit

Hi, I have a problem, i try to use the PIN of the character LCD for other input/output. And i have a problem, the output is at 0.9V for a low signal, and at 1.9 for high signal. I set the vo...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
15 years ago

Where are you testing the voltage? Is this really the voltage on the fpga pin?

Maybe you are testing on LCD pin and you have a series resistor between.

(this is just an idea, I don't know your board layout)