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danupp's avatar
danupp
Icon for New Contributor rankNew Contributor
5 years ago

3.3V supply voltage for PLL in Cyclone series FPGAs?

Hi, for the Cyclone series FPGAs the PLL:s require 2.5V according to datasheets. And it says that this voltage shall be present even if they are not used. In my application I don't use the PLLs and...
Ash_R_Altera's avatar
Ash_R_Altera
Icon for Regular Contributor rankRegular Contributor
5 years ago

Which family device are you using? Please make sure that the applied voltage does not exceed the Absolute Maximum Rating specified in the datasheet. Check values of VCCA / VCCA_PLL / VCCD_PLL / VCCA_FPLL etc. related to your device.


Regards


danupp's avatar
danupp
Icon for New Contributor rankNew Contributor
5 years ago

Ok, thanks, I am mainly looking at Cyclone IV and Cyclone 10LP. The datasheets for both these series say 2.5V is recommended for VCCA but 3.75V is the absolute maximum. No problem with 3.3V then?