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 Post subject: Hitachi LMG6911RPBC
PostPosted: Tue Apr 20, 2004 0:30 

Joined: Tue Apr 20, 2004 0:18
Posts: 1
Hello! At last I found a great forum about LCD :)

I have got a Hitachi LMG6911RPBC from a friend of mine, and I would like to make it work. I have thought about wiring it up to the parallel port on my PC, and if it works great, I will use a uP later on. But at the moment I would like to hear, if anyone could help me with some hardware for power etc.

From a datasheet I have found this pin assignment:

1 : D0
2 : D1
3 : D2
4 : D3
5 : Disp off (inv)
6 : Frame
7 : NC
8 : Load
9 : CP
10 : VDD
11 : VSS
12 : VEE
13 : V0
14 : PGND (i think)

From the datasheet it says that VDD-VSS must be ~5V and VEE-VSS must be -22V. Can anybody tell me how to make such a power supply?
Does anyone have experience with this kind of display - maybe someone have some sourcecode?

All help - anything - is appriciated.

 Post subject:
PostPosted: Sun Apr 25, 2004 18:08 

Joined: Sun May 05, 2002 22:05
Posts: 2063
Location: Lappeenranta, Finland
This kind display pretty much requires a separate controller based on SED1335 or some other controller ic. It's possible to drive it with a fast enough microcontroller without separate controller but it takes almost all cpu time and then there isn't much left for other things so the controller is the solution I recommend.

Here's some negative voltage circuits that might help:

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