Interfacing SD RAM with ATMEGA-128

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#1
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I am using 32K X 8 S-RAM with ATMEGA-128, Its working fine.

But now I need more spaces for storage data.
Is it possible to use SD-RAM with ATMEGA-128??
If yes then pls help me to provide some reffernce.

Or give me any other better suggestion which can fulfill my purpose.

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RuggedCircuits sells a 512K ram that uses the external memory interface on the avr. The pinout works with an arduino mega2560. You get a bunch of 32K pages At address 0x8000

Imagecraft compiler user

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Use an Xmega