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Altera_Forum's avatar
Altera_Forum
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17 years ago

Has anyone driven the 7-segment displays on the Cyclone III Development Board?

I have been trying to talk to the 4 digit 7-segment display on the Cyclone III development board. The Altera support guys refer me to similar projects using the Cyclone II but I think that developme...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
16 years ago

Unfortunately, the real VCCIO is defined by the board wiring. The assigned IO standard is expected to match the voltage, but can't change it. I agree, that the circuit doesn't look well considered. You can sligthly increase the 7-segment display intensity by reducing the segment resistors from original 220 ohm to 47 or 22 ohm. According to the BOM, they are individual 0402 chip resistors.