EPROM Data.

[Jeffrey Engel]

Paul,

The TMS27C256-15 should be fine.  The '-15' is the
read access time (150ns vs 200ns).  They should be
similar, other than that.

You should be able to compare the two by going to TI's
Web page (www.ti.com)

HTH,

Jeff Engel
--- pshurvell at tiofi.com.au wrote:
> 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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