NAND Flash interface support in LPC4367

[akhilesh_sreedh]

Hello,

The External memory controller section in LPC4367's datasheet specifies only SRAM, ROM, NOR flash and SDRAM devices to be connected to the EMC. 

However, is there any way to interface a NAND Flash to LPC4367 having the following interface?

Thanks and Regards,

Akhilesh Sreedharan

[leecoakley]

Waveshare make a 4357-based board with a NAND chip on it and they provide an example driver in their demo package.  Could be a useful example to look at.

[akhilesh_sreedh]

The link doesn't seem to be working, please share the files. 

[leecoakley]

I will share it, but you can just google "Waveshare Open4357-C" for the site.

See attached zip. The NAND code is under /examples waveshare/EMC/EMC_NANDFLASH/

[akhilesh_sreedh]

Hello Bernhard Fink,

Thanks a lot for the reply. 

The OP of the link which you have suggested asks if an SDRAM and NAND both can be interfaced simultaneously to the EMC. We have a similar system which will have a SDRAM and NAND.

Can you please let us know if there will be a need to re-initialize the EMC register when there is a switch between SDRAM and NAND as NAND read/write is a software controlled process and SDRAM read/write will be managed by the External memory controller. 

Thanks,

Akhilesh Sreedharan

[bernhardfink]

On the LPC4300 SDRAM and SRAM interface are two different instances with own register settings. No problem to connect a memory device to both, no dynamic changes are required at runtime.

Regards,

Bernhard.

[bernhardfink]

It should be possible to interface a NAND flash, as long as you find a driver for it.

But it's a sw managed read/write process, you will not be able to boot or execute from it.

There is a NAND driver for the LPC1788, which could most likel y be adapted to the LPC4300 platform:

https://community.nxp.com/thread/418534 

Regards,

Bernhard.