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PLEASE HELP ME!!! SII G321EV5R and Sanyo LC7981
http://forum.lcdinfo.com/viewtopic.php?f=6&t=206		 Page 1 of 1
Author:  Silver [ Tue Apr 15, 2003 18:58 ]
Post subject:  PLEASE HELP ME!!! SII G321EV5R and Sanyo LC7981
Hi guys,
i'm a lcd newbie. I' bought two LCD's but i don't know what models they are and so i don't know how to use them

The first is a monoromatic display whitout any controller, on the back there's the model number SII G321EV5R, how could i connect to a parallel port or other?


The second without model number, has a Sanyo LC7981 (5E2) controller onboard, the viewing area is (114x64)mm and it has 20 pins to connect it, i think. It was attached on a pcb labeled Australian Biomedical Corp. How could i use it? Connecting to parallel port?


PLEASE HELP ME it's about ONE MONTH I SEARCH FOR DOCUMENTS MATERIALS AND SOMEONE WHO COULD HELP.

gREETS SILVER 8)
Author:  Henri [ Wed Apr 16, 2003 9:12 ]
Post subject:  Re: PLEASE HELP ME!!!
Silver wrote:
SII G321EV5R

To connect this to parallel port you need to find a controller for it. Here has been some discussion about external controllers: http://forum.schijf.org


Quote:
Sanyo LC7981
You should be able to connect this to parallel port. There isn't much software for this but if I remember correctly LC7981 is like HD61830. But you would need the pinout to know how it has
to be connected.
You can probably do this with the LC7981 datasheet and tracing the pins from the chip to the connector.
Author:  Silver [ Wed Apr 16, 2003 13:08 ]
Post subject:  mmhhh...
mmhh...ok first of all many thanks for intersting.

Ok but where could i find the lc7981 datasheet? And connecting it it's the same as connecting a HD44780 based lcd?
Author:  Henri [ Thu Apr 17, 2003 16:59 ]
Post subject: 
http://www.crystalfontz.com/products/24 ... LC7981.pdf
http://www.crystalfontz.com/products/24 ... 40128DFMIT

I've no experience in connecting HD44780 displays but connecting graphical display should be similar. Depending of the display it may need external negative voltage source.
Author:  Silver [ Sat Apr 19, 2003 11:44 ]
Post subject:  ok...
ok i'm going to sold the wire as in the datasheet of the crystalfont, that lcd semms to be quite similar.
i'll keep you advised.
Author:  Estriker [ Tue Dec 30, 2003 2:08 ]
Post subject: 
Hi
I have the same Problem with the lc7981 controller.
But the Datasheet can't help me. I dont understand why the R/W is inverted!

If i connet the display to the parallel LTP Port it dont work... only a flicker,

can somone help me?
Author:  Henri [ Tue Dec 30, 2003 22:37 ]
Post subject: 
What software are you trying to use to drive the display ? If I remember correctly my LC7981 display also flickers before it is correctly initialized.

You could also be much more specific about how you have connected the display and all other information that might be useful here.
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