Hello Murugavel.A.N,
If you reference the user manual https://www.nxp.com/docs/en/user-guide/UM10503.pdf in section 5.3.4.4.1 table 25 you will see the QSPI devices supported by the boot code and the SPIFI API. As you can see of Microchip there are two devices: SST25VF064 and SST25VF016. However, if you redirect to the page of the memory SST25VF064:
SST25VF064C - Memory - Microcontrollers and Processors
You will see that under the section similar devices are the memories SST26. Also they provide a document on how to migrate from the SST25 family to the SST26:
http://ww1.microchip.com/downloads/en/DeviceDoc/20005343A.pdf
You shouldn't have any problems while working with this memory.
Hope it helps!
Victor.
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