topic Re: MIMXRT1064 + octal hyperflash support in i.MX RT Crossover MCUs

MIMXRT1064 + octal hyperflash support

nickwallis — Tue, 16 Jun 2020 16:48:14 GMT

Does the fact that the MIMXRT1064 has in-package QSPI flash mean that you cannot use external octal hyperflash with this part? (because it has one less external flexSPI interface available)

thanks

Re: MIMXRT1064 + octal hyperflash support

fangfang — Wed, 17 Jun 2020 07:46:09 GMT

Hello,

The customer can use the external memory via FLEXSPI. Please refer to the EVK i.MX RT1064 Evaluation Kit | NXP .

Hope it help you. Have a nice day.

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Re: MIMXRT1064 + octal hyperflash support

nickwallis — Thu, 18 Jun 2020 18:37:50 GMT

Thank you for your reply.

I thought that the RT1064 had one less FlexSPI interface available externally, like below.

Are you saying that with RT1064 you can use the internal 4MB on-chip flash AND also use external octal HyperFlash, in the same software image?

thanks

-Nick

Re: MIMXRT1064 + octal hyperflash support

nickwallis — Thu, 18 Jun 2020 18:38:42 GMT

Please, can you explain the differences highlighted in the red boxes?

Re: MIMXRT1064 + octal hyperflash support

Masmiseim — Sun, 21 Jun 2020 19:23:17 GMT

Hello Nick,

I think it should be working perfectly fine. The 106x has two flexSPI interfaces. The 1064 uses the same die like the 1061/1062. On the 1064 the second flexSPI Interface is used for the 4 Megabytes of QSPI which is integrated in the Package. The first flexSPI is freely available – also for Hyperflash.

Check the schematics of the 1064-EVK on Page 11. You can enable the Spansion Hyperflash by soldering/removing some resistors.

Best regards

Re: MIMXRT1064 + octal hyperflash support

nickwallis — Tue, 23 Jun 2020 10:40:11 GMT

Thanks for your comments Markus.

But - if the 1064 uses the second flexSPI interface for the on-chip QSPI flash, then presumably this means that this same flexSPI interface cannot also be used for external memory? (this was my original question).

External octal hyperflash/hyperram needs BOTH flexSPI instances to work, but you can't do this if one of the flexSPI is being used for the internal QSPI flash.

regards

-Nick

Re: MIMXRT1064 + octal hyperflash support

Masmiseim — Tue, 23 Jun 2020 11:49:24 GMT

Hello Nick,

true, the second flexSPI is not usable for external memory.

But the hyperflash needs only one single flexSPI interface. Compare the iMXRT1050 EVK. The 1050 has only one fleSPI Interface and is capable to work with a hyperflash.

Best regards

Re: MIMXRT1064 + octal hyperflash support

nickwallis — Tue, 23 Jun 2020 13:29:55 GMT

My question was about octal hyperflash.

You need both flexSPI to interface to octal hyperflash.

Therefore I don't think you can use external octal hyperflash + internal QSPI flash in the same software (this was my original question)

regards

-Nick

Re: MIMXRT1064 + octal hyperflash support

Masmiseim — Tue, 23 Jun 2020 14:36:42 GMT

One flexSPI is sufficient for a Hyperflash or OctaSPI. I think you mixing it up with the A/B Channel of the flexSPI Interface where you can connect two QuadSPI memories simultaneously to one flexSPI Interface.