Intel B57684 EPROM

[Alexander Wenning]

Buchholz, Steven schrieb:

The EPROM
> device has an Intel logo on it and a device type of B57684.  I'm without
> my nerd novels here at home and was wondering if any of you happen to
> have a databook that describes this device.  It is a 28 pin, 0.6"
> spacing package.  I suspect it is similar to a 27128 or 27256, but I'd
> rather know than guess when I try to read it in.  

They usually use 27C256 and 27C512. Try 27C512 and look at $8000. If there´s the same data 
as at $0000 then it´s a 27C256. If you tell me the ECU-no. (0261 ...) and the chip-no. 
(126735 ...) (each no. has 10 digits) I can tell you the chip type exactly.

Regards

Alex Wenning

wenning.motorsport at t-online.de