29.5.14.6 Data Flash Scrambling

When Data Flash scrambling is enabled (SECCTRL.DSCEN = 1), address and data in the secure portion of the Data Flash are scrambled when written, and de-scrambled when read.

The NVMCTRL automatically manage both scrambling and differential data storage if the tamper row resides in the secure Data Flash area and both are enabled ( SECCTRL.DSCEN = 1 and SECCTRL.SILACC = 1).

Note: In this case, scrambling is started followed by silent access on writes and the reverse on reads.

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