Forum Discussion
Altera_Forum
Honored Contributor
14 years agoCyclone III POR
I have a question about how the POR circuit works on a Cyclone II FPGA. I know there are two different PORs, Fast POR (3ms-9ms) and Standard POR (50ms-200ms). In some of the documentation I see tha...
Altera_Forum
Honored Contributor
14 years agoIf you use a fast POR and a slow power supply ramp rate, then you have a risk that the FPGA attempts to start a configuration before the power supply voltage reached its nominal value. In that case there is no guarantee the FPGA will initialize properly.