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Altera_Forum
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12 years ago

Potential Quartus Fitter Issue with Mixed Voltage Pins on Cyclone V

I am working on a Cyclone V design that is utilizing most of the pin resources. In my first pass, I let the fitter automatically assign pins. The issue that kept coming up is that, if not miti...
Altera_Forum's avatar
Altera_Forum
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12 years ago

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I think you should refer to the Cyclone V datasheet, Table 14. Single-Ended I/O Standards for Cyclone V Devices (Part 1 of 2)

It specifies a Vih range of 1.7 to 3.6 V for 2.5V IO-standard.

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Thanks, FvM. Seems like the datasheets are suggesting more flexibility than I originally thought.