Attribution units

The designer of a microcontroller or SoC device divides the memory spaces into Secure and Non-secure areas. Software defines some of the regions using the Secure Attribution Unit (SAU), or by device-specific controller logic that is connected to a special Implementation Defined Attribution Unit (IDAU) interface on the processor. The memory partitioning is also used to define peripherals as Secure or Non-secure.

It contains the following sections: