AnsweredAssumed Answered

Custom board LEDs

Question asked by MarcZ on Jun 28, 2013
Latest reply on Jul 5, 2013 by MaheshN



We'd like to drive four separate LEDs from four separate DAI pins on the

ADSP-21489. The Anode of each LED will be tied to +3.3V and the DAI pins

will be pulling the cathode low through a resistor.


We have looked at the "Output Drive Currents" section of the datasheet, but

the reason why we are asking here on the forum is that this may not paint

the whole picture in terms of sustained current through a single pin for

LED-like use.


Please let us know if there are any things we need to watch out for here. I

would imagine we would want to sink well under 10mA for each LED.