68764C

[Terryk]

I think I blew that one. I checked some stuff and it appears to be a 64k
eprom. "Appears" is the operative word there.

My programmer from Needham (EMP) will program those. 

I found only one vague references in some docs that it is a 25V(Vpp) /
6V(Vcc) eprom.  

Can you read the part? If so, you should be able to burn it with those
values above. Try using a 50 mS algorithm.

It a very old part.

What is the ECM number? Is it an old 6455? or 6025?

Regards

Terry
----------
> From: Carl Summers <InnovativeTechnologies at worldnet.att.net>
> To: diy_efi at efi332.eng.ohio-state.edu
> Subject: Re: 68764C
> Date: Saturday, December 13, 1997 5:11 PM
> 
> Thanks Terry,
> If I change the pin locations can I read and program as a 2732 if so at
> what voltage? or should I buy an eprom burner that will do
> motorola??????
> Thanks again
> Carl Summers
> 
> Terryk wrote:
> > 
> > I think it is the same as the 87S180 or a larger derivative.
> > 
> > A few pins are swapped.
> > 
> > Pins 18 and 19 to 12 (VSS)
> > Pin 20 of prom to 17 of 2732
> > pin 21 of prom to 20 of 2732
> > 
> > The other pins match the 2732.
> > 
> > I blew several of these out trying to read them as standard 2732's so
be
> > careful.
> > 
> > TK
> > 
> > ----------
> > > From: Nicole Lacasse <InnovativeTechnologies at worldnet.att.net>
> > > To: diy_efi at efi332.eng.ohio-state.edu
> > > Subject: 68764C
> > > Date: Saturday, December 13, 1997 3:12 PM
> > >
> > > Does anyone have any info on how to read this chip? I think its made
by
> > > Motorola.....for an 84 vette.....my eprom burner doesn't seem to have
> > > the settings......Thanks,  Carl Summers