S32K144 and DFlash/PFlash prefetch buffer

[enricoantonioli]

Hello,

when I write DFlash/PFash memory (with FCCOB registers) is it mandatory to disable the respective prefetch buffers?

Best regards,

E.

[danielmartynek]

Hello Enrico,

The Flash commands do not update the content of the buffers.
For example, with the buffers enabled, if a PFlash address is read, then reprogrammed and read again, both read accesses will return the same data.
Because the single-entry buffer can store the previously read data (Section 35.2.1 RM, rev.9).
So, this is on the user’s responsibility.

Regards,
Daniel