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 <<O>>  Difference Topic 28C256 (r1.1 - 12 Apr 2004 - Home.tungsten2k)
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%META:TOPICINFO{author="tungsten2k" date="1081802539" format="1.0" version="1.1"}% 28C256 EEPROMs will work in ECUs, but require pins to be moved around/altered due to them being a different pinout than either 27 C256 or 29 C256 chips.

Datasheet for an Atmel 28C256 (PDF) 

 name:         28C256
 function:     32k x 8 paged parallel EEPROM
 package:      DIP-32,32
 pinout:

      +------()------+
  A14 | 1          28| VCC
  A12 | 2          27| WE
   A7 | 3          26| A13
   A6 | 4          25| A8
   A5 | 5          24| A9
   A4 | 6          23| A11
   A3 | 7   28256  22| OE
   A2 | 8          21| A10
   A1 | 9          20| CE
   A0 |10          19| I/O7
 I/O0 |11          18| I/O6
 I/O1 |12          17| I/O5
 I/O2 |13          16| I/O4
  GND |14          15| I/O3
      +--------------+

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Revision r1.1 - 12 Apr 2004 - 20:42 GMT - Home.tungsten2k 		%WEBCOPYRIGHT%