Change Memory layout of MCU MKW38 to enable EEPROM Emulation

[BANGYUD]

Dear NXP, I have a question regarding my memory configuration layout design, here my memory configuration layout design is like this below :

My question is , Is it possible to change memory layout like below :

The reason I’m asking is because I would like to enable the EEPROM emulation feature, using 4 KB of FlexRAM for emulation and 64 KB of FlexNVM as the backup memory.

If this configuration is possible, could you please advise on how to implement it within the current memory layout?

The existing memory layout—without EEPROM emulation—has already been finalized and is currently in production. However, based on the application build results, there is a 64 KB unused space in the Program Flash.

Can this space be used as the backup memory for EEPROM emulation?

Thank you.

[sofiaurueta · Accepted solution]

Hello,

Hope you are doing well.

According to the MKW39/38/37 Reference Manual, the FlexRAM and FlexNVM blocks can be split into partitions.  You would have to modify the EEERST, EEESIZE, DEPART values according to your specifications. See the Program Partition command described in section 30.4.11.16.

For EEPROM partition (EEESIZE), up to 8 KB can be configured for EEPROM, '0010' = 4,096 Bytes.

As for Data flash partition (DEPART) and FlexNVM EEPROM partition, '0100' = 192 Kbytes of Data flash Size and 64 Kbytes of EEPROM-backup Size

See 30.3.4 Data flash 0 IFR map and 30.4.3 FlexNVM Description for more information.

Best Regards,

Ana Sofia.

[BANGYUD]

currently I'm using mkw38 mcu series , that has 256 p-flash and 256 flexNVM memory