gheskett at wdtv.com
Thu Apr 26 22:35:16 EDT 2012
On Thursday, April 26, 2012 10:15:27 PM Darren A did opine:
> Anybody know what the "R" means in these HD63C09RP processors?
> Coco mailing list
> Coco at maltedmedia.com
Darren, my 1991 Hitachi 8/16 bit cpu data book doesn't have the RP
variation of the HD63#09 family, however I would assume that indicates a
packaging variation of some sort. Likely it is still a 40 pin device, but
could even be a TSSOP, or some variation of the same PLCC packaging as the
GIME chip is, but with fewer contacts. The final P I expect means its an
Epoxy-B package for its encapsulation. Continuing on a few pages, the
HD64180 is available in several variations, in this case the number of
address pins bonded out, allowing either 512 KiB of ram, or 1 MiB of ram to
be addressed, but all 3 variations are available in 64 pin DIP, or a
surface mount similar to a TSSOP, or a PLCC. There, the R version is the
512k capable address bond out.
Sorry I can't be more help.
If you have located a quantity of them, I would first request a closeup
photo from the seller before I'd drop the card unless you are up to
fabricating a socket adapter to go with them so that they would be usable
in the coco's, which need a 40 pin dip package. In any event, the suffix E
is needed for the coco's as that is the External clock version. I don't
believe the RP is bonded out for External clocking in any event.
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