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Altera_Forum
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14 years ago

cyclone IV configuration: VCCIO8 connection

I’m currently using an EP4CE6F17I8LN on a PCB in an AS configuration mode (EPCS4 PROM) and I’m experiencing some issues with its configuration (device stays in POR with nSTATUS low). In my circuit im...
Altera_Forum's avatar
Altera_Forum
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14 years ago

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Holding nConfig low during power up does not make it come high afterwards.

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nCONFIG is supposed to have a pull-up.

If you can hold it low using an on-board programmer, or just short it to ground, then power-up, then release nCONFIG, it should go high.

Cheers,

Dave