WANTED: model type/datasheet for this unknown LCD?

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Elektronman

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Hello this is a 128x64 LCD. It is ks0108 -compatible but I'm not able to find datasheet for this. Strangely enough, it has 22
pins (while most LCDs have 20 pins). The purpose of those extra 2 pins (21, 22) is unknown to me. I'm trying to interface it
with PIC16f876a, without success. pin 19 and 20 are A and K for the backlight (the backlight works ok)
Anyone has some clue on exact model and where can I find the datasheet?
Thank you very much
 

**broken link removed**

The extra pin may be for Frame Ground.

**broken link removed**

**broken link removed**

Contact Winstar and ask then datasheet of 12864A Rev J GLCD with 22 pins.
 

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