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Use of 16bit port NAND with a MPC8306 processor

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Use of 16bit port NAND with a MPC8306 processor

‎02-26-2014 03:19 AM
866 Views
manuelojea
Contributor II

We are studing to use a NAND Flash device in our design based in a MPC8306.

The NAND flash (128MB) will be connected to the eLBC and using the FCM mode. We plan to use a 16 bit port NAND, but in the reference manual is not clear if we can use this type of memory or only must use a 8 bit port NAND.

My question is: Could we use this 16 bit port NAND or should be replaced with a 8 bit port NAND?

Thank you for your help.

Manuel Ojea

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‎02-27-2014 01:17 AM
667 Views
scottwood
NXP Employee
NXP Employee

16-bit NAND is not supported on this chip using FCM.  See the documentation for BRn[PS], which says that 16-bit is only supported for GPCM and UPM.

It should be possible to connect a 16-bit NAND chip via UPM, but this is not straightforward and you would not have any hardware ECC.  It is recommended that you use an 8-bit NAND chip, and stick with FCM.  Also note that the NAND chip must not have pages that are larger than 2048 bytes.

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