SDRAM and NOR flash/QSPI flash interface in MK22FN512VLL12

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SDRAM and NOR flash/QSPI flash interface in MK22FN512VLL12

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prasannanaik
Contributor III

Hi,

   Can SDRAM and NOR/QSPI flash be interfaced with MK22FN512VLL12 through Flex memory interface?

Thanks and best regards,

Prasanna

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kerryzhou
NXP TechSupport
NXP TechSupport

Hi Prasanna Naik,

   1. SDRAM for K22, you can use the flexbus interface

   More details, you can refer to this post:

Flexbus and SDRAM Multiplex on K65F_169GBA 

  And an5095:

http://cache.nxp.com/files/32bit/doc/app_note/AN5095.pdf 

   2. QSPI for K22

    Unfortuntatly, MK22FN512VLL12  doesn't have the QSPI interface, maybe you just can use the SPI interface.

   Flex memory is just used for the internal memory, it can't be used to the external memory.

Wish it helps you!

Have a great day,
Kerry

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