PORTA.4 problem in PIC16F84A ?

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  1. - 8th May 2008, 10:14 #1
    iugmoh's Avatar
    iugmoh
    iugmoh is offline Member
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    Oky I know this and I put a pull up resistor but this pin can't drive led so how I can do this ?
  2. - 8th May 2008, 10:58 #2
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    Melanie
    Melanie is offline Prolific Poster
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    There's more than one way to power a LED - and that pin can SINK a LED quite happilly. Please study the PICs Datasheet and/or SEARCH the forum...

    http://www.picbasic.co.uk/forum/showthread.php?t=562
  3. - 8th May 2008, 12:07 #3
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    iugmoh
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    Thanks Melanie for your details information
    but I don't know what is the objective for making this pin is the only pin who is open drain !
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