LCD Enable Timing

sjo · ‎2004-02-19

Posted on February 19, 2004 at 20:43

LCD Enable Timing

sjo · ‎2011-05-17

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 · ‎2011-05-17

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 · ‎2011-05-17

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