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Altera_Forum
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8 years ago

Cyclone IV configuration from 1.8V SoC

I want to configure a Cyclone IV part (EP4CE10F17C7) using passive serial mode from an onboard processor. The processor's I/O pins are all 1.8V logic level. I would think this would be fine if I se...
Altera_Forum's avatar
Altera_Forum
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8 years ago

I hope I'm not missing something either. Indeed the entry does imply it doesn't support 1.8V I/O in PS mode.

I don't have anything definitive to offer. I'm hoping the documentation is lacking - although, given how mature the family is, I doubt it.

Possibly a leftover from programming cable requirements when operating I/O bank 1 below 2.5V. USB-Blasters and other need at least 2.5V to power them...

Cheers,

Alex