stevep@cs.keele.ac.uk (Steve Philips) (09/21/88)
I'm doing some work with engine management systems and have come across
a chip that nobody seems to be able to identify. It's fitted in Motorola
equipment and is a 40 pin dil plastic chip, almost certainly NMOS with
on board ROM and RAM. I know it has a 4MHz clock and is based on the
6800, but that's all. The identification numbers on the chip are :-
ZC85269CP
51R40276505
GM58441
Does anybody have any ideas ?
Steve Phillips
JANET: stevep@cs.kl.ac.uk
UUCP: ...!ukc!kl-cs!stevepmichael@mcdchg.UUCP (Michael Bodine) (09/29/88)
Steve Philips (stevep@cs.keele.ac.uk) writes: > I'm doing some work with engine management systems and have come across > a chip that nobody seems to be able to identify. It's fitted in Motorola > ZC85269CP > 51R40276505 > GM58441 I have an idea, tho' impossible to verify from where i sit. GM, Ford, Chrysler, etc, etc, buy a lot of 6805 family chips (tho this could be a 6801 chip, too) that come with masked ROM. When Motorola builds those parts, they are stamped with the customer's part number, not Motorola's. I don't know exactly what kind of records are kept in the factory to identify these customer part numbers but my experience has been that it is Motorola policy NOT to give out information regarding such proprietary parts. The only way to know exactly WHICH MC68705, MC68701 or MC68704, or HC part or whatever, is to contact the vendor of whatever equipment you found the thing in and ask them. If the equipment is all from Motorola, it is probably from Motorola AIEG (Automotive and Industrial Electronics Group) and the same policy will still hold -- you'll have to contact the originating group in AIEG to determine what the part is. Good luck! -- [ Michael Bodine, michael@mcdchg.UUCP, (312) 576-7840 ] [ Opinions expressed are mine! All mine! ] [ Motorola couldn't have them even if they wanted them! ] [ No one else agrees with me; why should my employer? ]