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    What determines the number of rows in an SDRAM?

    SDRAM is divided into banks, each bank into rows and each row into columns. What determines how many rows will be there in an SDRAM?
    Is there a formula used to go from a single memory location address to generate three addresses of bank, row and column?

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    Re: What determines the number of rows in an SDRAM?

    What determines how many rows will be there in an SDRAM?
    The DRAM chip internal organisation. Review the datasheet.


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    Re: What determines the number of rows in an SDRAM?

    So it is an arbitrary choice of the SDRAM designers? I see.



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    Re: What determines the number of rows in an SDRAM?

    But if you can access memory locations using linear addressing, then internal organisation may not matter for your application.



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    Re: What determines the number of rows in an SDRAM?

    Quote Originally Posted by mjuneja View Post
    But if you can access memory locations using linear addressing, then internal organisation may not matter for your application.
    It can be very important. DRAM can be very slow when switching from row to row. But reading across banks and within a row incurs little/no turnaround penalty. So if you can, it is best to design your logic with this knowledge.



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