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Forum Index : Microcontroller and PC projects : SSD1963 LCD Timings

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GerryL
Newbie

Joined: 24/01/2019
Location: Australia
Posts: 33
Posted: 12:32am 28 Nov 2023
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In playing around with a driver for a SSD1963 type LCD display I used Techtoys 7 inch datasheet as a guide for setting the timings for horizontal HT, HPS & HPW and vertical VP, VPS & VPW. These work fine on my 7 inch LCD but on my 5 inch display I appear to get some writing during the blanking period.
Noting these timings are probably a little dependent on the manufacturer, does anyone know if there is a rule of thumb or guide for setting these for 5 inch and 9 inch displays based around the 7 inch timings or is it a matter of trial and error noting there is some lee way?

Gerry
 
Geoffg

Guru

Joined: 06/06/2011
Location: Australia
Posts: 3194
Posted: 04:42am 28 Nov 2023
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I wrote drivers using the SSD1963 many moons ago for the Micromite Plus and I remember that there was no definitive timing available and, even worse, the timing seemed to vary by the LCD glass used.  In the end I used a lot of trial and error.

You can see my efforts (written in C) by downloading the Micromite source code from https://mmbasic.com/source.html

Geoff
Edited 2023-11-28 18:01 by Geoffg
Geoff Graham - http://geoffg.net
 
GerryL
Newbie

Joined: 24/01/2019
Location: Australia
Posts: 33
Posted: 12:11am 29 Nov 2023
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Thanks Geoff, considering how extensively these types of displays are used its surprising how little manufacturer's timing information is readily available.

Gerry
 
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