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LCD Enable Timing

sjo
Associate II
Posted on February 19, 2004 at 20:43

LCD Enable Timing

3 REPLIES 3
sjo
Associate II
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
joseph2399
Associate II
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.

sjo
Associate II
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