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66AK2E05: Flash size bigger than 4Gb (512MB)

Expert 1010 points
Part Number: 66AK2E05


We have a custom board almost the same as EVM board with a 66AK2E05 on it. Until now we were using prebuilt images of MCSDK. Since lots of operations and the support are only possible on Processor SDK, we decided to port to processor SDK our existing platform.

Because of limited flash size on the EVM Board (only 4Gb) which makes it even worse for prebuilt images by Processor SDK, we wanted to change the flash size of 4Gb to a 8Gb one without adding any chip (same form factor of the flash chip).

We tried but the NAND device was not recognized by U-Boot.

Is it possible to have only one 8Gb flash?

We saw that the new evaluation board compatible with Processor SDK has two 4Gb flash chips.

We want to avoid this and not reengineer our custom board. 

What did you suggest otherwise? 

  • Hi Dpa,

    Is it possible to have only one 8Gb flash?

    Could you please run "NAND FLASH TEST" as mentioned in this URL to do basic diagnostics on your Custom EVM? We need to run the Diagnostics to confirm NAND is working fine.

    1. NAND Flash Test

    2. Power on Self Test

    For this, you need CCS and TI-RTOS SDK for K2E. To compile the source, Please follow the Link

    Once we confirm Flash Read and write is successful, Using CCS, we can run U-Boot on RAM without flashing it. Please follow these links for the debugging,

    1. Link 1

    2. Link 2 

    Please use Target as "K2E" and Load the corresponding GEL files.


    Rajarajan U