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Without looking at the data sheet, my first guess would be that it has an open collector output and needs a pullup resistor as the result . . .Gotta love those data sheets.
Edit: Nope portA.4 is open drain. A.5 appears to be a standard I/O, maybe your PIC is damaged, maybe your breadboard is bad. Check the pin with your voltmeter directly on the pin itself.<br> http://www.kirlian-photography.com/video/PIC16F87XA.pdf
Last edited by Archangel; - 18th March 2008 at 17:35.
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