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
+--------------+
|
Copyright © 2002-present by the contributing authors. All material on this collaboration platform is the property of the
contributing authors, and is covered by the Non-Commercial Share-Alike License unless explicitly stated otherwise. |
|