Excessive sector erase times (evkmimxrt1064_flexspi_nor_polling_transfer)

[tamir_michael]

Hello,

Running the example program indicated in the title, it needs about 17 seconds to erase a single flash sector! The flash data sheet indicated that it needs about 300ms (internally) to erase a single sector. I'm using a MIMXRT1064-EVK evaluation board.

Can anybody please try this too, and tell me what the results are? What could be the root cause?

Thanks in advance.

[kerryzhou]

You are welcome!

 If you have any new questions, welcome to create the new community post, we will help you in your new case!

Best Regards,

Kerry

[kerryzhou · Accepted solution]

Hi Tamir Michael ,

  Do you use the newest SDK version, in my memory the the last SDK already fix this issue.

  To the old SDK, really have this problem, please check the following information:

The ERASESECTOR index is wrong, when I changed the ERASECHIP to 13, or just use the RT1060 index:

#define NOR_CMD_LUT_SEQ_IDX_READ_NORMAL 7
#define NOR_CMD_LUT_SEQ_IDX_READ_FAST 13
#define NOR_CMD_LUT_SEQ_IDX_READ_FAST_QUAD 0
#define NOR_CMD_LUT_SEQ_IDX_READSTATUS 1
#define NOR_CMD_LUT_SEQ_IDX_WRITEENABLE 2
#define NOR_CMD_LUT_SEQ_IDX_ERASESECTOR 3
#define NOR_CMD_LUT_SEQ_IDX_PAGEPROGRAM_SINGLE 6
#define NOR_CMD_LUT_SEQ_IDX_PAGEPROGRAM_QUAD 4
#define NOR_CMD_LUT_SEQ_IDX_READID 8
#define NOR_CMD_LUT_SEQ_IDX_WRITESTATUSREG 9
#define NOR_CMD_LUT_SEQ_IDX_ENTERQPI 10
#define NOR_CMD_LUT_SEQ_IDX_EXITQPI 11
#define NOR_CMD_LUT_SEQ_IDX_READSTATUSREG 12
#define NOR_CMD_LUT_SEQ_IDX_ERASECHIP 5

The sector erase time is about 70ms, it's correct.

Wish it helps you!

If you still have questions about it, please kindly let me know.

Have a great day,
Kerry

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[tamir_michael]

Kind of funny, I encountered this bug when I reviewed the code after determining that it was misbehaving but I took no action...

[tamir_michael]

Hi,

Just downloaded and unzipped SDKs and found the fix myself (corrected in 2.7.0). Thanks again.

[tamir_michael]

Hi,

Thanks for your reply. I will compare the relevant code of SDK 2.6.1 and SDK 2.7.0 to see if something changed. Can't actually install 2.7.0 because of an obscure error I posted about recently...