1. triplehdineshbabu

    Thread Starter Active Member

    Feb 5, 2009
    38
    0
    Hi all,

    Kindly tell me why Pull up resistor is needed in microcontroller?
     
  2. mik3

    Senior Member

    Feb 4, 2008
    4,846
    63
    Some PIC microcontrollers have internal pull up resistors which can be activated by the software. Just for information. ;)
     
  3. kuttihan

    New Member

    Mar 1, 2009
    1
    0
    Hi,
    You said pull-up resistors are required while using a pin as an input. Are they required while connecting an LCD with microcontroller? (i.e. when we connect output device to the mcu) If yes, why would we require that??
     
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