Brian Espenschied

Direct LED drive capability in the HC908JL3

Discussion created by Brian Espenschied on Jun 4, 2006
Latest reply on Jun 5, 2006 by bigmac
I am trying to find out exactly what it means in the documentation when it states that the port pins have Direct LED drive capability. I tried a few searches on this site but found no explaination of what this means. I have been using port pins to drive LED's with for years and didn't realize there were special pins for this. Does this mean I don't need any current limiting resistor in series with the LED? or does it mean the pin can handle the current needed to drive the LED? If so then Have I been overdriving port pins by using them to drive LED's with? Just curious.....