[Diy_efi] Re: What type masked ROMS on early motronic ecu's

[Alexei Pavlov]

jengeltx at yahoo.com wrote:
> 
> The 1802?
> 
> That's the first time I've heard of it being used.  If
> we're talking about the same part, it was first made
> by RCA back in the 70's.  One of the first CMOS parts
> and has quite different '0' and '1' thresholds.  Try
> driving it with HC family logic, TTL won't work.
> 
> Jeff

I believe the 1802 was widely used in Siemens ECUs.
Siemens - Bosch, some kind of similarity ...

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