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Altera_Forum
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10 years ago

DE2_115 GPIO High and low voltage

Can anybody tell me how much is high and low voltage for GPIO pins when they are in 3.3 V state? DE2-115 Manual, Page 46 says: Each pin on the expansion headers is connected to two diodes and...
Altera_Forum's avatar
Altera_Forum
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10 years ago

When you set JP6 jumper for VCCIO = 3.3V, then your GPIOs must go from nearly 0 to nearly 3.3V when configured as outputs.

If you actually measure a level around 1.5V then you probably have made some mistake. Anyway, what do you mean with 'seems'? how do you measure it?