58.9.2 ULP0, ULP1 and Idle Modes

• In these three low-power modes, the SAM9X60 power supplies are all applied within their operating range. The power reduction is achieved by reducing the frequency or even stopping the clock signals of the processor and/or its peripherals.
• In Idle mode, only the processor clock is affected. In ULP0 and ULP1 modes, the clocks feeding both the processor and its peripherals are slowed down.
• In ULP0 or ULP1 mode, the SAM9X60 is placed in Retention mode and is able to resume on wake-up events (any interrupt or hardware event). This mode is a combination of the Wait for Interrupt mode of the ARM core and the system clocks frequency reduction or shut-off.

A detailed description of each mode is given in the following sections and is followed by a power consumption section dedicated to those modes.