To select between stop and standby mode, and to set up a number of parameters related to the deep-sleep modes, our reference platform provides a power controller, mapped in the internal peripherals region, at address 0x40007000. The controller consists of two registers:
- PWR_CR (control register) at offset 0
- PWR_SCR (status and control register) at offset 4
The relevant parameters that can be configured in these two registers are the following:
- Regulator Voltage-scaling Output Selection (VOS), set through PWR_CR bit 14. When active, saves extra power in normal running mode, by configuring the internal regulator to produce a slightly lower voltage for the CPU core logic. This feature is only available if the target ...
