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Altera_Forum
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15 years ago

Main clock voltage levels for Cyclone III

Hello! I have developed a custom board using a Cyclone III and (surprise) it isn't working. My design is based on another similar design that is known to work, so I don't think I'm too far of...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
15 years ago

Hi,

I Think Cyclone require a clock having voltage level between 0v and 3.3v. It also depend on the I/O level set for the device, i.e. Voltage provided at "vccio" pins of the Altera Device.

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Regards,

Chander