Noritake VFD

[mojoe]

Can anyone identify the microcontroller in the linked picture? It is on a Noritake VFD. Is there a particular microcontroller that Noritake commonly uses?

I tried attaching the image, but it is too big. I want to keep the detail, thus the Dropbox link.

https://dl.dropboxusercontent.com/u/19599147/CPU.png

[jeremy]

Given that noritake is an OEM, a Japanese company and produces premium spec displays, my guess is that it is an asic. Why are you trying to find out?

Pretty sure my other noritake displays have asics

[mojoe]

I'm just trying to reverse engineer a display. I have the parallel inputs, but there are indications that there may also be a serial input.

[BloodyCactus]

I thought all noritake displays were serial input? every one I've poked at was just a uart connection sending plain ascii. some char range were control for chaning the upper 128 ascii to japanese from old dos style...

[macboy]

What is the exact part number of the display? Most support serial (either async or sync or both), some parallel (68k/intel/both), some both. Often there will be an un-populated header and jumpers on the board which might be used for the other interface. Try finding a data sheet for a similar display with the desired interface, then look for evidence of that on your board.

[mojoe]

I've already done all of the above. No datasheet matches this display, which appears to be custom.