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Altera_Forum
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14 years ago

GPIO MHz Operation, What is OK?

I am using the DE1 board with EP2C20F484C7. I am wanting to send out data to external custom circuitry: op-amps, fiber optic drivers, etc. I want to send data at about 25MHz max if I can. ...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
14 years ago

i'm not a SI guy, but this is what you want to read:

http://www.altera.com/literature/hb/cyc2/cyc2_cii51005.pdf

the CII is fairly robust with respect to 3.3V I/O compared to newer families. the maximum recommended supply for 3.3V I/O is 3.465V (Table 5-2) so I'm thinking you should be good