[Gmecm] EPROM erasing/programming

[Dude]

I have a 27C512 from ST Electronics with a 45ns access time.  It takes
approximately 12 minutes to erase.

Mike 

-----Original Message-----
From: gmecm-bounces at diy-efi.org [mailto:gmecm-bounces at diy-efi.org] On Behalf
Of David Cooley
Sent: Sunday, May 08, 2005 10:27 PM
To: gmecm at diy-efi.org
Subject: RE: [Gmecm] EPROM erasing/programming

Old chips... Old technology may have taken longer to erase.
I have seen it with old "Pulls" that I have acquired over the years.
 

> -----Original Message-----
> From: gmecm-bounces at diy-efi.org
> [mailto:gmecm-bounces at diy-efi.org] On Behalf Of William Lucke
> Sent: Sunday, May 08, 2005 10:34 PM
> To: gmecm at diy-efi.org
> Subject: [Gmecm] EPROM erasing/programming
> 
> Nevermind. Apparently 30 minutes wasn't enough. I left them in all 
> afternoon and that did the trick. Programmed and verified without 
> incident.
> Does GM use chips with higher erase energies for greater reliability? 
> I don't think my eraser is that wimpy. Why might it take so long to 
> erase those parts?
> 
> 
> Will
> 
> 
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