EPROM Data.

[Tom Sharpe]

The Edelbrock Pro-Flow is a weber-Marelli. 4 injector chanels and one for 
spark.(on a v8)
On Thu, 14 Feb 2002 09:32:02 -0000, "Richard M" <richm at ntlworld.com> wrote :

> Paul,
> The faster (150nS) Eprom will work fine. Using a chip faster than actually
> required by the system will always work, it is the read access time.
> By the way, out of interest, what Marelli system are you using? I have 
Weber
> Marrelli on my Ford Cosworth.
> Regards
> Rich
> 
> ----- Original Message -----
> From: <pshurvell at tiofi.com.au>
> To: <DIY_EFI at lists.diy-efi.org>
> Sent: Thursday, February 14, 2002 1:53 AM
> Subject: EPROM Data.
> 
> 
> > Hi all. I am new to the list an I am after some info on EPROMs for my
> > Webber Marelli EFI system. Basically I want to be able to copy the EPROM
> > from the ECU using my PC and an EPROM programmer and then   program it 
to
> > another chip. What I need to know is how the speed of an EPROM is rated.
> > The EPROM in my ECU is a Texas Instruments TMS27C256-20. Unfortunately I
> am
> > unable to obtain this chip locally. I can however get a TMS27C256-15 for
> > the right price (ie free :o) ) locally. Is the time factor a read time,
> and
> > if so does that mean the 100ns chip is faster than the 200ns chip?
> > Would I be able to use the faster chip in my ECU?
> > Any help that could be offered would be much appreciated. Even a link 
to a
> > site that has the data I need would be great.
> > Thanks for being patient with me.
> > Regards to all.
> > Paul Shurvell.
> >
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