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Altera_Forum's avatar
Altera_Forum
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17 years ago

driving seven segment user display

Hi. I'm trying to drive the on board seven segment display on a Cyclone III development kit board EP3C120. The seven segment display is Lumex LDQ-M2212R1, quad digit. I appreciate any advice ra...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
15 years ago

That's a "design flaw" of this board !

Already cost me hours too....

The User 7-Seg is connected to a 1.8V VCCIO IO Bank.

No chance to up the voltage to 2.5 V. (Hardwired, see board schematics).

Just switch the lights off in the room....

BTW: The Power 7-Seg on the same board is driven by the MAX II, which

is configured with enough voltage. So this one is glowing brightly.