Tracking down pinout for an unknown 16x4? char display

[brian4120]

Hello to the EEVBlog forums!

I've been looking through google trying to find more information about a display I picked up in the surplus section local electronics shop for cheap, presumably because they ran into the same issue as I did.

The label on it reads:
EG-X84320ER
9601E1
Epson Japan

Unfortunately variations of searching this presumed model number have come up empty. The only information I can gather is the IC on back, a SED1503F 16x1 dot matrix driver.
http://www.vetco.net/datasheets/VUPN6337/SED1500_series_datasheet.pdf

Since there are 4 ICs and it looks like you may be able to do a master/slave type setup I am guessing this is a 16x4 character display. I am hoping someone with better google-fu may be able to find a pinout for this display. I may end up having to swing by the shop again and buying a few more of these displays (Only about $3) and sacrifice them for some reverse engineering.

If anyone has a suggestion or can find a pinout that would be most helpful!

Apologies if I am missing something obvious, I've been tinkering around with electronics for years but I won't say that I am completely knowledgeable.

[Andy Watson]

"Mostly compatible to EPSON EG 84320 display"

http://new.qscomp.cz/download/batron/BT_84320_dm.pdf

At least is gives the pin-out of the module. It should be possible to figure-out the command set from the driver chip information.

[brian4120]

Thank you! Now that I have a little better idea of what I am working with I am going to try probing the pins to see what they correspond to on the IC. Based on some info I found on the SED1503F one IC will be master and the other 3 are slaved to it.

http://www.datasheetarchive.com/dl/Scans-005/Scans-00116587.pdf

I'll have to do some research to figure out how to properly drive this thing but at least I know what I am dealing with. Much appreciated!