Pcf8574 & 16f877

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  1. - 11th July 2008, 14:32 #1
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    Quote Originally Posted by Wirecut View Post
    I need to use the PCF8574 to increase the number of I/O pins. I have e trouble to work with it.
    Have you got a PCF8574 or PCF8574A?
    Control bytes are different between the two...
  2. - 11th July 2008, 14:49 #2
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    Wirecut
    Wirecut is offline Junior Member
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    Hi

    problem solved. I have swapped SDA with SCL. Now work perfectly.

    Thanks skimask for your suggestion.

    Ciao

    Leo
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