Forum Discussion

Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
19 years ago

Cyclone III AS configuration bizarreness

I am using a cyclone III (EP3C25F324C8N) with an EPCS16 configuration device. I am programming the configuration device through the FPGA with the serial flash loader. The problem is that the Cyc...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
19 years ago

Not sure what your circuit looks like, but nSTATUS has to be pulled up to VCCIO (permanently) in order to enter configuration mode. Are you saying that you have to short the pull-up resistor to get the FPGA to configure?

The recommended value for the pull-up is 10k for 3.3V VCCIO.