RT1051CVL5B FlexSPI and LPSPI differences

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RT1051CVL5B FlexSPI and LPSPI differences

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ffloree
Contributor III

Can I use FlexSPI like LPSPI to access variant SPI devices unlike flash?

 

For example, FlexSPI clock is fixed:

a.png

But LPSPI clock is flexible

 b.png

Second, for FlexSPI, does LUT (Look Up Table) command must be sent firstly before sending any data to device?

If so, for some devices without read/wirte/erase commands will not be able to use FlexSPI, right?

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art
NXP Employee
NXP Employee

Q. Can I use FlexSPI like LPSPI to access variant SPI devices unlike flash?

A. Basically, the FlexSPI module is dedicated to communicate with Flash-like serial devices. It has a set of dedicated features (like LUT command sequences) for such type of accesses. For SPI communication with a "generic" (non-Flash) SPI devices, the LPSPI module should be used.

Q. For FlexSPI, does LUT (Look Up Table) command must be sent firstly before sending any data to device?

A. For any FlexSPI access operation, the corresponding LUT command sequence must be associated. Then it is executed automatically when the corresponding access operation is triggered.

Q. If so, for some devices without read/wirte/erase commands will not be able to use FlexSPI, right?

A. Yes, this is right.


Have a great day,
Artur

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