This anomaly applies to IC Rev. Engineering A, build codes QKAA-AB0.
Application
Flash memory space is divided into 32 regions of 32 KiB instead of 64 regions of 16 KiB.
Always.
FLASHREGION[n].PERM (n=32..63) registers are not functional.
Use FLASHREGION[n].PERM (n=0..31) registers to configure the entire flash region.