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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
17 years ago

You're right, cause other Dev Kits, e. g. Terasic DE-2 have non-multiplexed 7-Segment-Displays, while Cyclone III 3C120 board has a multiplex connection. So you need some logic (a clock divider and a multiplexer) to drive the display with meaningful data.

P.S.: I can show you a VHDL module for a similar purpose, that has 3x2x8 instead of a 4x8 multplexing scheme, including PWM brightness control. You should be able to adapt it to the said application.