Flexram and Flexnvm cycle durability of the S32K1xx chip

[ZEROOO]

Hello

    Please help solve a problem, the Flexram of S32K1xx chip is configured to simulate eeprom, and this analog eeprom refers to a space starting from 0x14000000, right? According to the manual AN12003, the cycle durability of simulated eeprom is about 100K. We have some differences on whether this 100K refers to flexram starting from 0x14000000 or flexnvm starting from 0x10000000, so please help to confirm it, thank you.

[danielmartynek · Accepted solution]

Hello @ZEROOO,

It is the endurance of the records in the EEE (FlexRAM (at 0x1400_0000)).

It depends on the number of records in EEE and the size of the EEE Backup flash (FlexNVM (at 0x1000_0000))

The endurance is 100k provided the ratio between EEE and EEE backup is 16.

Please use the calculator:

https://www.nxp.com/products/processors-and-microcontrollers/s32-automotive-platform/s32k-auto-gener...

Regards,

Daniel

[ZEROOO]

Hello,

    Flexram start address here is 0x14000000, FlexNvm address is 0x10000000, durability refers to Flexram, if flexram is not configured to simulate eeprom, is it the same cycle durability as ordinary ram?

[danielmartynek]

I just fixed the addresses in my previous post.

Yes, the FlexNVM is not partitioned for EEE, the FlexRAM is just an SRAM and the FlexNVM is the DFlash.

DFlash endurance:

Regards,

Daniel