GM PCM OBD-II HW registers

[Ara Bedrossian]

Just remembered also that the Autotap cable also uses this same chip !

BTW, one advantage of this chip over others is, it also supports GM
block-mode transfer which is used to re-flash the gm-pcms.

I know this chip can do it, but I have no idea how :( all the technical
stuff data sheet and info is there, the only problem is you need to know how
to program it to work .

Ara
----- Original Message ----- > Okay guys,
>
> I have  a literature from Motorola's web site "mc68hc58.pdf" which I had
> downloaded earlier in the year.. right now I tried to search for it on
their
> website and could not find it.. I have the file, it's about 700kb, if you
> want it I will email it to you.
>
> I have 40 pcs sitting on my desk right now ;);) never used this chip for
my
> project, ended up using something else just because I didn't want to deal
> with spi..
>
> Yes, these parts are hard to get too.. I searched for months and
everywhere
> I called had to put a special order and maybe they will get it, and the
> qty's they required was outrageous.  So what I ended up doing is calling
> Motorola's educational dept. and asked them if they could help me out with
> 4pcs for my senior project and they said it would take 2-3 weeks but they
> will send it to me for free because it was for education.  2 weeks later I
> got 40pcs ;);) somebody must have added another 0 at the end hehehe..
>
>
> BTW, just to prove you guys that this piece exists, crack open a Hypertech
> programmer and please tell me what chip they are using to communicate to
the
> OBDII vehicles to reprogram it !!! YESS   THE MC68HC58...
>
>
> Ara
>
>