HELP with PORTA PIC 16F628A

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  1. - 13th February 2011, 07:39 #1
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    aratti
    aratti is offline Senior Member
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    Default Re: HELP with PORTA PIC 16F628A

    Your column 5 doesn't work simply because PortA.4 is a Schmitt Trigger
    input and an open drain output. You will need an additional NPN transistor with a pull down resistor to make column 5 working.

    Cheers

    Al.

    PS adding CMCON = 7 on top of your code, will disable the comparators function.
    Last edited by aratti; - 13th February 2011 at 07:47.
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