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Mystery LCD

Hey everyone!

I've got this random LCD screen that I'd like to use in a project but I
can't find out any useful information on it. The only markings on it
are:


WU524A-01 TG2071
0501BJB*427/05/02/21 02

CMF-TG2071UNSR-W-01 D0511


The bottom line, which I'm assuming is the part number, is in bold
text. The LCD itself is 150mm x 40mm and is amber backlit. The only
connections to it are a 15 conductor ribbon and power for the
backlight.


Has anyone seen this display before?

Thanks
 
Are you sure it's not a 14 conductor ribbon? If so, it's probably the
generic type of lcd. See if it has a Hitachi HD44780 chip on it. There
is plenty of information about this controller on the web.

If that didn't help, what else can you tell us about the display? Is it
a character display or a bitmap? Can you see how many
lines/characters/etc it has? Was it pulled from something? If so, what
was it?
 
I counted twice ... definitely 15 conductors. The ribbon is actually
wide enough for 16, but one trace is omitted. I couldn't find any
controller chips on the LCD itself, but I didn't want to destroy it
prying the back off.

The display is a bitmap type; I didn't count the pixels but they look
to be about 1mm x 1mm (these are a bit rough; I just put a ruler next
to it and mm match up better than fractions of an inch, but it's not a
very precise ruler) so it would be roughly 140x30 pixels. I've seen it
display graphics, large characters, small characters, and special
characters (signal strength bars). It also displays inverted
characters, i.e. dark characters on a lit up background. I pulled it
from a JVC Sirius satellite radio receiver.
 
Aha, if it's not a character-based LCD then it does not fall within my
sphere of expertise (the generic kind that all work the same way. :)
However, there are several popular graphic controllers out there as
well. If you could determine which of the pins is power and ground,
that will help you spot the data sheet that looks most like yours
(although sometimes the pins are moved around just for the heck of it.)
 
After some closer inspection, with actual light this time, I see that
it's actually 16 conductors, but two of them are ground and one is
almost definitely +V of some sort (but I couldn't trace out where it
goes).

I also peeled back some more taped stuff and see that at least the
ribbon cable is made by "Truly," and there were some part numbers there
that appeared to be the same style as the ones printed on the back of
the LCD. So some progress there, I guess. I also traced those signal
lines back to the Atmel chip so I've got an idea of what it's getting.
So ... going to keep at this. There's bound to be some documentation
somewhere, I've just got to track it down.

Thanks
 
R

Ryan weihl

Jan 1, 1970
0
After some closer inspection, with actual light this time, I see that
it's actually 16 conductors, but two of them are ground and one is
almost definitely +V of some sort (but I couldn't trace out where it
goes).

I also peeled back some more taped stuff and see that at least the
ribbon cable is made by "Truly," and there were some part numbers there
that appeared to be the same style as the ones printed on the back of
the LCD. So some progress there, I guess. I also traced those signal
lines back to the Atmel chip so I've got an idea of what it's getting.
So ... going to keep at this. There's bound to be some documentation
somewhere, I've just got to track it down.

Thanks
could not find anything on a TG20xx. but if it has 16 pins, last 2
should be backlight (5V). that leaves you 14 pins in a normal
lcd configuration as someone mentioned.
rw
 
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