PIC18F14K50 and i2cread/i2cwrite on PORT C

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  1. - 27th February 2012, 18:22 #4
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    RuudNL
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    Default Re: PIC18F14K50 and i2cread/i2cwrite on PORT C

    Quote Originally Posted by Darrel Taylor View Post
    You need those pull-up resistors on both pins for I2C.
    2.2 or 4.7K.
    Yes, I know that this is an often made mistake.
    But of course I have those pull-up resistors connected!
    The strange thing is that everything worked fine with a PIC18F4550, but not with a PIC 18F14K50.
    When I look with an oscilloscope on the data and clock lines, I don't see any signal at all while sending an I2C command.
    Last edited by RuudNL; - 27th February 2012 at 18:23. Reason: Typo
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