29001Re: NCR chips?
- Jan 11, 2013Take a look at this book and see if you can find something similar.
I'm guessing that they are either custom chips or (best case) in house designs that were later productized, in which case you should be able to find a close match in the manual.
I'm thinking that the leading 6 is package type, as it matches the type 6 package in the manual.
--- In firstname.lastname@example.org, "Jeff Jonas" wrote:
> Does anyone have NCR chip databooks?
> 1) I have a NCR panel with fluorescent displays
> the NCR chips:
> NCR 6-51146
> NCR 6-51055
> NCR 6-51056
> NCR 6-51057
> 2) 34c227 is a 48 pin DIP. Some sort of microcontroller.
> Of course, Google only finds the parts-pimps,
> no real specs.
> -- jeffj
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