Re: Using 28F256 in a 747 instead of 2732A??????????

["John S. Gwynne" <jsg@jsgpc.mrcday.com>]

| Yes, you're right.  Sorry, I knew all this stuff 5 years ago and have
| forgotten.  You're right about the voltage on the 28 and 29 series.  28
| series are bulk erase, and 29 series can do sector erase.  28Cxxx and
| 29Cxxx are probably standard EEPROM and not flash.


29C256 is 5V flash... I just down loaded the Atmel data sheet.
It should plug right in and cost under $4.00. The part is writable in 
64 byte segments.

28c256 is EEPROM... also available in 28 pin dip (I did not check for
pinout compatibility). price is $12-$10.

john gwynne
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