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Altera_Forum
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12 years ago

Unused bank - VCCPD, VCCIO and VREF pins

Hello everyone, If I do not want to use a certain bank of the Cyclone V, do I have to power the VCCPD, VCCIO and VREF pins? Cheers, Adam
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Altera_Forum
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11 years ago

Hi Adam,

Generally we could refer to the CV pin connection guidelines (https://www.altera.com/content/dam/altera-www/global/en_us/pdfs/literature/dp/cyclone-v/pcg-01014.pdf) to see how to deal with the unused pins. In CV pin connection guidelines, it says unused Vref pin can be connected to VCCIO of its bank or GND. As for VCCIO and VCCPD, there is no mention about unused pin connection. Thus, I believe VCCIO and VCCPD should always be powered even the bank is unused.