LCDInfo.com

Okay, the local surplus store had a blowout, and they sold LCD displays for 99 cents. So, I went and got one. Only problem: I have no clue what the pinouts are, or even the model.

I'll describe it as best I can.
The plastic case is translucent blue, and has the motorola logo on it. It seems to be the remains of a phone, or so. It has a large keypad, and it is a clamshell style. Kinda reminds me of a pda. The LCD is roughly 1" by 1 3/4", and there isn't a model number on it. I tried googling for motorola to see if I could find a match, but no dice.
Any ideas as to what it could be, and the pinouts?

Here's a link to the item listing from the store (has picture):
http://www.princessauto.com/moreinfo.cf ... 0&SCAN=CAN
TIA!

Unless you know the controller type this display uses or have the pinout of the actual LCD, it will be pretty much impossible to try and figure out. My suggestion would be to take it all apart and see if there are any noticeable IC's that you can figure out. But, more than likely this is going to be a COG (chip on glass) type of display, meaning it is all pretty much one unit. You may get lucky and find something else though when you take it apart.

Does anyone perhaps know the model of the device it's from? Maybe Motorola has schematics...
Anyway, I'm disassembling it, and here's what I've found:
1. The inside of the bezel has the numbers:
'6186426K08 REV E 49016C'
The metal frame on the LCD has '0786408K01'
2. The connector on the LCD is flat flex cable, and has ~ 20 connections. Two of the traces are thicker, I can assume these are for 5V and GND. Not sure which is which though.
The display itself has a green LED backight. There are no ICs visible, and the display is attached to the PCB via a 22 trace flat flex cable.
The back of the display PCB says '54865T-02-I 330-0'.
The underside of the Motorola Logo says '5486490K03 REV D 5001D'
Molded in to the plastic of the display housing, '1586387K'.
Finally, the underside of the plastic case has a sticker:
'P.N. 0162475Z06 030217
SLR RO 002-Z06 U4 SH: 1'
If I hold the display in the light, the faint outline of crystals appears to be a Dot matrix display. The traces appear to be going to a central area under a black sticker. I assume this is the on-glass IC.
Finally, the display has a part number etched on to it:
'WY-12B-040A.
Does this tell anyone anything useful?
Thanks in advance!

WoHOO!
I spent some hours googling, and I found out the display is from a Motorola V100 phone...
Can this help anyone find me a pinout?
Thanks in advance.

Darn... Just heard from Motorola, apparantly the pinouts are considered a company secret, and cannot be disclosed to end users.

That means I'll have to rely on someone here...
Anyone, please?

I did do some searching as well, and it indeed looks interesting enough to want to play with. I'm sure you already figured out it is also called the V.Box. I'll keep looking more though when time permits. It's not going to be an easy task though, just so you are aware....and it may not even be compatible with most lcd software. Might use an I2C (or equivelant) type of interface like seen on alot of the phone LCD's. Good luck!

http://www.yasikgsm.narod.ru/schematics ... orola.html

http://www.yasikgsm.narod.ru/files/moto ... matics.rar

_________________
myLCD - An LCD framebuffer library
(KS0108, PCD8544, SED1565, SED1335,
Nokia Colour LCD's, T6963C, TCP/IP, etc..)
http://mylcd.sourceforge.net/

Michael,

Thanks....but I can't translate or download from either of the links

***EDIT*** Never mind, finaly got to it....guess it's R-E-A-L-L-Y slow. Going to take about an hour to download.....on broadband

Hello,
Thanks to Michael and One~Zero,
I would appreciate it if you could help me to the end with this.
Thanks again.

Edit: Michael, the second linky has schematics providing exactly what we need. (page 5) Thanks! Now, can someone help me sort this out?

I've found the following from the schematics: It uses a 27 pin connector:
The pinouts seem to be pretty standard. The LCD PCB also has the RF antenna, so some of the connections will go to that...
1-->/CS1 --> No idea what this is
2-->/RES --> Reset
3--> Data/Command
4--> R/W
5-12--> Data bits
13-->Vop--> ??!?
14 --> Labelled VSS --> Must be +5V
15--> Negative voltage for LCD -->Labelled VOUT
16-20 --> V1-V5 --?
21 --> N/C on schematic
22 --> IRS* --> No idea what that's for
23-25 --> N/C
26 --> LED_BKLT --> Must be + for backlight... ooohh... the excitement...
27 --> ALRT_VCC --> No idea what that's for...
The display is 126x64 pixels... and it's graphic...
What software could I use with this?

CS1 might be referring Chip Select.
Vss refers to the Substrate Voltage which is usually 0v which is usually gnd.
V1-V5 may each just require a decoupling capacitor to gnd.

You might strike it lucky with the KS0108 command set btw, so it's worth a try.

_________________
myLCD - An LCD framebuffer library
(KS0108, PCD8544, SED1565, SED1335,
Nokia Colour LCD's, T6963C, TCP/IP, etc..)
http://mylcd.sourceforge.net/

You're right, VSS is tied to GND immediately. I looked at the LPT connections for this, and most of the pins seem to match up.
The schematic has many caps and resistors (the one you linked), and it seems to me that they aren't on the LCD PCB- does that mean I'll need to rebuild that part of the circuit? (heck, with those schematics, I can rebuild the whole damn phone!)

I can't seem to locate the correct connector for the ribbon cable either, DigiKey has them, but the dimensions are off by one millimetre.

I suppose if worst comes to worst, I can always peel the ribbon cable from the PCB and solder directly to it.

I also found out some other stuff:
1. /CS2 and S/P are tied high internally. This means 1) I hope CS2 isn't a necessary connection, and 2) I'm stuck with a parallel interface. If S/P was external, it could be serial.
2. The negative voltage needs to be -10V.

EDIT: Some reaserch disclosed this from a surplus site that sells them: "We know very little about this piece, except to say we suspect that it was manufactured by Samsung for use as part of a Motorola cellular phone or for the Motorola V100 personal communicator. Here is what is..."
This would probably say it has a Samsung chip...

Edit again-- looked at the KS0108 datasheet. Too close for comfort... I think we may have a winner.

V1-V5 are voltage references...

....being that you've already posted 25 times in this forum, why not register a forum name instead of just using "Guest"? Just a thought

Hmm, yeah... perhaps I should...
I'll do some more research this weekend, if I can. I'll keep you up to date.

Ack! nobody seems to be answering my e-mails...
I think I'll contact Samsung and see if they know anything...
And, BTW, the KS0108 doesn't seem to use a -10V line...
Does the chip generate the -10V itself, since the line is labelled VOUT?