PIC16F84A Matrix LED Display


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  1. #1
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    Default Re: PIC16F84A Matrix LED Display

    I think you're correct in wiring the rows to a port pin on the pic.

    After looking at the datasheet I see the 16F84 can sink/source 25mA per pin. Now I see why you'd want to use that chip. How would you do it with a 16F877A where the pins are not as robust? That was the chip I was planning on using is the reason I'm asking.

  2. #2
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    Jan 2005
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    Default Re: PIC16F84A Matrix LED Display

    Quote Originally Posted by AvionicsMaster1 View Post
    I think you're correct in wiring the rows to a port pin on the pic.

    After looking at the datasheet I see the 16F84 can sink/source 25mA per pin. Now I see why you'd want to use that chip. How would you do it with a 16F877A where the pins are not as robust? That was the chip I was planning on using is the reason I'm asking.
    I'd sink via transistors; cheap and simple.

    Robert

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