2.3. Power management

Low-power operation is essential for most IoT endpoint devices which typically rely on a battery or on harvested energy.

The IoT Subsystem is single power domain system and it does not support control of different power domains within the SoC. It does however define the necessary HW handshake signals that can be connected to a Power Management Unit (PMU) at the SoC level.

SRAM power management is not present in the IoT Subsystem because SRAM models are outside of the IoT Subsystem block. Memory power mode support can be implemented at SoC level.

For power-management signals, see CPU control, status, and power management signals.

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