What is the spatial ditribution of DFlash in S32K3?

[jingfang]

We are going to user DFLASH instead of EEPROM in S32k3.

I want to know what is the minimum erasure space of DFLASH?Whether this area can be unlocked separately to protect data security?

[ziomocci]

Hi All,

 we have to map all the flash memory (S32K3 f.y.i.) for different SW levels (Bootloader, Tunables, Main Application, NVM, etc etc) but there is something not totally clear for me.

According to the picture below

we have (8KB x 32) and (64KB x 12), for a total amount of 1MB of Flash for Block.

But what is the sector lock granularity for Block 4 Data Flash? 4 blocks of 32KB each one or 2 blocks of 64KB?

Regards,

Andrea

[danielmartynek · Accepted solution]

Hello @jingfang,

The sector size is 8KB, and there is a lock for each of them.

You can start with the C40_Ip_Example_S32K144 RTD example.

And use the C40_Ip_ClearLock() function, where the first argument is C40_Ip_VirtualSectorsType VirtualSector.

In C40_Ip_Cfg.h you can find:

Regards,

Daniel