Home Forums Microcontrollers PIC Microcontroller port extender

This topic contains 3 replies, has 2 voices, and was last updated by  Ligo George 2 years, 4 months ago.

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  • #8960

    PN
    Participant

    on MCP23017 , pin13,SDA should be connected to which pin of PIC18f4550?

    #8961

    Ligo George
    Keymaster

    MCP23017 will not work with MikroC Port Expanding Library..  You need to develop your own library functions..
    This link might help you :

    http://www.mikroe.com/forum/viewtopic.php?f=97&t=56536

    You can connect SCL and SDA to PIN 34 and 33 respectively. Please refer the datasheet of 18F4550.

    #8872

    PN
    Participant

    Hi, i tried a prog using port extender IC 23S17 and worked fine. but i want to test it practically and i have IC 23017 available with me will it work? its Pin config is different..

    #9369

    Ligo George
    Keymaster

    No, it will not work.. you need to develop codes for IC 23017.

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