Problems about operating P-flash of KV11 Series

[Saiwenliang]

I encountered a problem about kv11 series operating pflash. At present, my chip is kv11z128, and its flash space is 128K. Then the operation address range should be from 0x0000 0000 to 0x00020000. At first, I chose the last sector, that is, 0x0001 F800, as my write address. However, Flash Protection Violation ERROR occurred during erase sector. The same error occurs to sectors 2-4 from the bottom. When I use the sector 5 from the bottom, that is, 0x0001 D800, the flash operation is successful. Do I want to know what protected and inoperable sectors are the four sectors of 0x0001 E000 ~ 0x00020000? Which document explains this aspect?

[Saiwenliang]

OK, I am looking forward to your reply, Thank You. 

[Omar_Anguiano]

Hello

I confirmed this by my side and the address 0x1 E000 to 0x 2 0000 can't be erased due to flash protection error. I checked the protections bits of the flash and they were unprotected. I'm confirming the reason of this with an internal team. I will keep you updated

If you have more questions do not hesitate to ask me,

Best regards,

Omar

[Omar_Anguiano · Accepted solution]

Hello

I confirmed this information, unfortunately, the last 8KB are protected for another purpose, I apologize for the inconvenience this may cause you.

If you have more questions do not hesitate to ask me.

Best regards,

Omar

[Saiwenliang]

OK，Thank you very muck.