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How to read this timing diagram

Discussion in 'Datasheets, Manuals and Component Identification' started by Baris Yakut, Jan 1, 2016.

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  1. Baris Yakut

    Baris Yakut

    Jan 1, 2016

    I am trying to write my own library for the usual 2x16 LCD. So, I downloaded the datasheet from:

    As a start, I'd like to write a function that sends an instruction. But I don't kinda get this diagram:


    I know there are dozens of examples out there but I'd like to know how to catch a fish.

    It seems to me that I should first set E to high, then send 4 bits of data, then set E to low. Is this correct? E is being set to low in the middle of sending 4 bits of data confuses me. How long should I keep sending the data? How long should E stay in high state? Should I wait for some time before sending the second 4 bits of data?

    I have these kind of questions as I am new to electronics. I would very much appreciate if someone can explain how to read these kind of diagrams.

    Thank you
  2. Minder


    Apr 24, 2015
    See these.

    Attached Files:

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