How do you drive a Serial LCD?

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  1. - 5th December 2011, 01:44 #10
    Mike, K8LH's Avatar
    Mike, K8LH
    Mike, K8LH is offline Member
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    Default Re: How do you drive a Serial LCD?

    Hi Dwight,

    I attached the schematic below but I'm afraid the interface in its present form is not very PBP friendly. It was the only way I knew of at the time to control six (6) pins on an LCD with only five (5) PIC output pins. That means you have to drive the display by sending two serial bytes for each LCD byte, each serial byte containing four data bits and an RS bit.

    The new design that I'm working should be done soon. It uses full eight bit bytes and recognizes the $FE character (for toggling an RS flag).

    Regards...
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