Look for N28f010 or N28f512 , Intel brand in PLLC32 package. a is for automotive application, extended temp range, but they are nowhere to be found
Brand matters because of different command set. The pcm is set for use with intel brand.
There is different access time, the lower the better, anything below -120 ns will do the job.
You can also get the 128kb from a 96-97 blackbox pcm.
If you have something available give it a try, they will work. I am sure your onboard` ones will work too. So you might not really need them.
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