Anyone with specs for old Hitachi components?

[Huw Scourfield]

I have a JECS system from a nissan sunny gti which has the  HD 46508, a
44pin square job, there are also a HD63b03x, and a jecs  A19-264000 chip ,
both of these larger 4by 17 pin chips!along with an eprom and a daughter
board with a mitsibushi chip. I'd really like to get to grips with this
system if possible, any help /suggestions greatly received.
    Huw

----- Original Message -----
From: Scot Sealander <Sealand at clarityconnect.com>
To: <diy_efi at diy-efi.org>
Sent: 07 November 2000 01:08
Subject: Re: Anyone with specs for old Hitachi components?


> "Buchholz, Steven" wrote:
>
> > So far I haven't gotten any info on the 46506
>
> Any chance that it might be like a 6506?  (Or was there a 6506? I don't
> know?)
>
> Scot Sealander
>
>
> > While just checking the old spec book I have for the 46510, I actually
found
> > the best clue yet as to the origin of the chips we're looking for.  I
found
> > a cross reference chart that gives the 46503, 46504 and 46505 as the
"old
> > type numbers" for Hitachi's versions of the rotoMola stock 6800
peripheral
> > chips: 6843 FDC, 6844 DMAC and 6845 CRTC ... using that model, my chip
would
> > be a 6846 (ROM, I/O, Timer) ... and yours would be a 6850 (ACIA) ???  I
> > don't have a Moto catalog here, but the cross ref I have says that the
46846
> > and 46850 fill those slots ... and at least in my ECU, the processor has
> > integral I/O, timer and serial interface functions.  If anyone happened
to
> > find a HD46508, it is a 16-channel, 10-bit A=>D module ... perhaps it
got
> > into an ECU somewhere ...
> --------------------------------------------------------------------------
--
> To unsubscribe from diy_efi, send "unsubscribe diy_efi" (without the
quotes)
> in the body of a message (not the subject) to majordomo at lists.diy-efi.org
>
>

----------------------------------------------------------------------------
To unsubscribe from diy_efi, send "unsubscribe diy_efi" (without the quotes)
in the body of a message (not the subject) to majordomo at lists.diy-efi.org