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Alternative external flash with CC2640R2F

Christina Lim
Expert 6405 points
Part Number: CC2640R2F


Hi,

My customer is running issue to continue using their usual external Flash Adesto AT25XE021 due to material constraint. They sourced another vendor Puya, P25Q21, datasheet as below. 

https://datasheetspdf.com/pdf-file/1317772/Puya/P25Q21L/1

Customer did a quick view in the datasheet and ExtFlash.c in TI SDK and had concern that the interface is quite different btw current Adesto driver in TI SDK and the Puya chip.

Could we advise if it is feasible and if yes, and detailed instruction for me to adapt the driver for the new chip?

Thanks,

Christina

  • 0
    TI__Guru**** 218487 points

    Hi Christina,

    What differences are observed which concern the customer?  As far as I can tell the sector/flash size, SPI communication method, and command codes are quite similar.  But as TI has never validated this particular external flash device, it is the customer's responsibility to add the manufacturer/device ID and device size to flashInfo and further test the solution after modifying the external flash files to meet their needs.  Note that ext_flash.c of BIM projects must also be changed if OAD projects are being used.

    Regards,
    Ryan