I am migrating from the 4Mb Am29LV040B to the 8Mb S29AL008J. How do I treat "A18" pin on S29AL008J if Byte mode is used? - KBA203746

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    Translation - Japanese: 4Mb Am29LV040Bから8Mb S29AL008Jに移行にて、バイトモードを使用している場合の ”A18” ピンの処理 - KBA203746 - Community Translated (JA)

     

    Question:

    I am migrating from the 4Mb Am29LV040B to the 8Mb S29AL008J. How do I treat "A18" pin on S29AL008J if Byte mode is used?

     

    Answer:

    It depends on which model of the S29AL008J you use. If you use model 01(top-boot), you should connect A18 to logic low; If you use model 02 (bottom-boot), you should connect A18 to logic high. Either connection will make the S29AL008J sector architecture look identical to the Am29LV040B.