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DDina's avatar
DDina
Icon for New Contributor rankNew Contributor
7 years ago

May I not supply voltage to VCCIO during power up and configuration?

Hi. Internal weak pull-up resistors interfere with my scheme. As far as I know the pull-up resistors cannot be disconnected during power up and configuration. May I not supply voltage to VCCIO? ​​...
AnandRaj_S_Intel's avatar
AnandRaj_S_Intel
Icon for Regular Contributor rankRegular Contributor
7 years ago

Hi,

Yes, All I/Os pins are tied to an internal weak pull-up during Power Up and Reset.

Coming back to the question

  1. May I not supply voltage to VCCIO during power up and configuration?.Yes, VCCIO is not required for power up and configuration.

2.How long may I not supply voltage to VCCIO?

VCCIO is not monitored by POR so it can be as long as you like.

We can power up VCCIO for IO banks individually after configuration based on our design requirements.

Let me know if you need any further assistance.

Best Regards,

Anand