Forum Discussion

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

Cyclone III configuration

I'm about to spin my Cyclone 3 board and want to be sure I get the configuration stuff wired correctly. I'm using a JTAG connection to the USB Blaster and a Serial Config Device (active serial)...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
18 years ago

--- Quote Start ---

I don't doubt, that the exposed pad should be connected, but I wouldn't expect that omitting this connection would cause failure of configuration. But I may be wrong. Did you try?

--- Quote End ---

As lynx said, the e144 package has an exposed pad at the bottom of the package. this exposed pad is a ground pad that must be connected to the ground plane on your pcb.

(EP3C5, Pin-Outs, Note 6).

there is not connection between this pad and gnd. if this pad is not connected, c iii doesn't work correct