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Altera_Forum
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16 years ago

DE2 EP2C35 and Output GPIO Voltage

I'm using the Altera Cyclone II DE2 EP2C35 board. The goal is to use it to drive the INIT signal to a sonar sensor. However our output pin isn't giving us the voltage we need to trigger the sensor. ...
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Altera_Forum
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16 years ago

DE2 is using a VCCIO of 3.3V for all IO banks as you can see from the board schematics. You either terminated the pin with around 50 ohm, which isn't suitable if you need 3V signal level, or the board has been damaged. You may want to check the unloaded output level first.