The device can be set in a sleep mode. In sleep mode, the CPU is stopped and the
peripherals are either active or idle, according to the sleep mode depth:
- Idle sleep mode: The CPU is stopped. Synchronous clocks are stopped except when
requested. The logic is retained.
- Standby sleep mode: The CPU is
stopped as well as the peripherals. The logic is
retained, and power domain gating can be used to reduce power consumption
further.
- Backup sleep mode: Only the backup domain is kept powered to allow few features to
run (RTC, 32KHz clock sources, and wake-up from external pins).
- Off sleep mode: The entire device is powered off.