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AM2632: SRAM interface

yangbo li
Prodigy 90 points
Part Number: AM2632

Dear expert， Does AM263x have SRAM interface for external memory ?

from the datasheet, it seems no interface for external memory, but 2MB internal ocsram is not enough.

  • 0
    TI__Genius 15435 points

    Hi

    Can you please explain expanding SRAM you mean? You're trying to interface external SRAM IC's over some kind of communication protocol? Or trying to add DDR kind of memory to the AM263x? 

    yangbo li said:
    from the datasheet, it seems no interface for external memory, but 2MB internal ocsram is not enough.

    As of now we have a limitation on this. We do have peripherals like GPMC however due to the errata on this peripheral it is not recommended to use for code execution. You need to go with a different part number like AM273x (has DSS_L3 of 3.4Mb and more memory) or our upcoming part AM263P (this has GPMC errata fixed and also XIP support coming into the picture) hence you can have more memory to use.

    Another alternative I could think of is using the TCM memory of the R5 cores in AM263x however they are very small (64kb in dual core or 128Kb in lock-step).

    Thanks,
    G Kowshik

  • 0 in reply to Kowshik Gudimetla
    Prodigy 90 points

    Dear Kowshik, Interface external SRAM IC's over some kind of communication protocol Or trying to add DDR kind of memory to the AM263x is all ok. But it seems no interface. is it right?

  • +1 in reply to yangbo li
    TI__Genius 15435 points

    Hi,

    Yes that's right. As AM263x currently doesn't support the XIP from flash also it is recommended to use other MCU's from Sitara's portfolio like AM273x, AM243x . Can you please explain your use case so that I can make better suggestions based on requirement.

    Thanks