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sjo
Visitor II
February 19, 2004
Question

LCD Enable Timing

  • February 19, 2004
  • 3 replies
  • 704 views
Posted on February 19, 2004 at 20:43

LCD Enable Timing

    This topic has been closed for replies.

    3 replies

    S
    sjoAuthor
    Visitor II
    May 17, 2011
    Posted on May 17, 2011 at 11:58

    I have just noticed the timings used for the LCD (DK3200/DK3300) dev boards are not within spec for a typical intelligent lcd.

    The main point I have noticed is the enable line, this is set for approx 130-140ns (@36MHz) this should be minimum 230ns (total cycle 450ns) to comply with the Hitachi spec.

    Surely if the dk boards are used as a design starter, they should comply with these timings ?

    Regards

    sjo
    J
    joseph2399
    Visitor II
    May 17, 2011
    Posted on May 17, 2011 at 11:58

    Thanks for your input, we will look into it. By the way, the LCD used on the DK boards are Hantronix not Hitachi.

    S
    sjoAuthor
    Visitor II
    May 17, 2011
    Posted on May 17, 2011 at 11:58

    Thanks for your reply.

    I was really referring to the chipset, as nearly all (Samsung,Novatek,Sitronix,JRC) are based on the Hitachi HD44780 controller, even though Hitachi have stopped making this.

    Regards

    sjo
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