The device RAM has sections arranged in one contiguous memory range, accessible from both the CPU and peripherals.
Each RAM sections has separate power control for System ON and System OFF mode. This preserves RAM contents in sleep modes or powers off RAM to save power. The sections are illustrated in Memory layout, and the register interface is described in MEMCONF — Memory configuration.
At the high end of the RAM address range are two dedicated areas:
- ProtectedRAM is used for secure key storage.
- VPR saved context is used by VPR to store and restore the context of the VPR during hibernation sleep.