30.8.2 Sleep Modes

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:

• Active mode: CPU is running, all power domains are active.
• Idle mode: The CPU is stopped. Synchronous clocks are stopped except when requested. The logic state is retained.
• Standby mode: The CPU is stopped as well as the peripherals. The logic state is retained.
• Hibernate mode: PD_CORE_SW power domain is turned off. The backup power domain is kept powered to allow few features to run (RTC, 32 kHz clock sources, and wake-up from external pins). The PD_CORE_RAMx power domain can be retained according to software configuration.
• Backup mode: Only the backup domain (VDD_BU_PD)is kept powered to allow few features to run (RTC, 32 kHz clock sources, and wake-up from external pins).
• Off mode: The entire device is powered off.