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Altera_Forum's avatar
Altera_Forum
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15 years ago

user LED circuit on EP3C120F780 development kit

Hi, I checked the schematics of user LED ciruity on EP3C120F780 development board, the ciruit seems weird to me. The LED anode is connected to 3.3 through 56 ohm resistor and the cathode...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
15 years ago

The attempt to draw the schematics didn't come off well

I'll try again, (dots are just to fill space)

.................(led)..........3.3 [V]

....................................|

....................................|

...(pin) o----|<]---www--`

.....................................

........................56 [ohm]