Hyundai LCD

[nighthunter]

Hi, i want to ask if somebody does have datasheet (or what type of LCD driver it uses) of Hyundai LCD HB10502 (mono graphic), it is from a siemens Operator panel, there are 21pins. I tried to google out something but i found nothing. Can someone help me please?

[Sanjuro]

Mono graphic LCD?? It's probably 4x20 text LCD, with 44780 compatibile controller. Maybe try standard pinout and soft from text 44780 compatibile LCD's.

[nighthunter]

I've tried it but, it has not worked, the only thing i 100% know is, that Pin 1 -GND, 2 - Vcc

[art666]

I seen this while looking for an another data sheet.
First 16 pins are standard lcd format. 5 control ?/
 
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I got a LCD from a Siemens operator panel OP7 It can handle 4 lines with each 20 characters but it can be a graphic screen. I don't know. The screen has 21 pins in a line. There are first 14 pins then 2 pins for the LED background and then another 5 pins left. It is ofcourse possible that this is a 44780 compatible screen (seen the first 14 pins, the next 2 for the LED) and that it has an additional digital contrast (regulating the contrast goes digital in the OP7 in 16 steps)