I have about 100 of these graphics LCDs that I have not been about to figure out. I’ve given some to several people but they haven’t had any luck (or else they just didn’t bother).
Here is what they have on them: “Data Image GXM123211SL3Y-J5”
They are supposed to be 120x32 with a back light LED (I’ve gotten the backlight LED to work).
They have a very small 18 pin 0.5mm pitch cable. I have a few of the mating connector. I could make a breakout board if it is required.
From seaching on the internet it should have a SED-1520 controller. But this could be wrong.
If anyone thinks they can get these working I will give you either 10 of them or $100. Which ever you want. Or both if that’s what it takes.
I need someone serious, not someone who just want a toy to dink around with.
What exactly are you looking for here - just a basic demonstration that the displays actually work, or a full set of text- and graphics-drawing primitives? For what processor?
The SED1520 doesn’t look that difficult to use (assuming that’s what’s actually there) - think HD44780 but with data bytes that represent columns of 8 pixels rather than characters, and with a proper reset signal rather than that awful timing-sensitive reset sequence. I’m tempted to take you up on your offer, but I’m not sure I’m going to have enough free time in the near future to do it right.
I just need the pinout, timing and very basic primitives (read/write a byte of display memory).
I will be using the Parallax SX processor, but I will convert whatever you have. I just need to know what bytes to send to the display. And how to read a byte back.
This is the closest thing on the Data Image web site.
The SED1520 seems to be a pretty common graphics-LCD controller (it’s part of a chipset including the controller, row/column drivers, and stuff). I also have a (single) LCD panel that uses that controller that I don’t have a pinout for. I have found data sheets for the controller but I don’t have any info on my particular board — maybe it would be possible to figure it out using [something along these lines… a project for the future sometime.
Also, the SEDxxxx chipsets were originally developed by a company called SMOS, I think, but were bought by Epson, who gave new names to some of the chips. But googling SED1520 will immediately turn up data sheets, driver source code, etc.](http://beerhunter.silentwire.net/wiki/index.php/JTAG_Finder)