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LED interfacing to p89v51rd2

Discussion in 'LEDs and Optoelectronics' started by iPritam, Aug 28, 2010.

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  1. iPritam

    iPritam

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    0
    Aug 28, 2010
    I am trying to interface an LED to p89v51rd2 micro... but couldn't find micros max current sinking capacity in datasheet.. could someone tell me what is this value?
     
  2. davenn

    davenn Moderator

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    1,956
    Sep 5, 2009
    The Datasheet says 20mA absolute max for I/O Pins P1.5, P1.6, P1.7 and 15mA for all other I/O pins
    so obviously you want to be below that so as not to kill the chip

    Dave
     
  3. iPritam

    iPritam

    3
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    Aug 28, 2010
    hey davenn,

    thanks for this... i got it clear now!

    Pritam
     
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