Datasheet

SPM Management 24
External Power Button PWRBTN#
A low signal in the Power Button pin (if enabled) can be used to turn-on or turn-off the system from the low
power mode. A low level at this pin activates the wake-up functionality.
Wake on RTC
A hardware wake-up event from the sleeping state can be made at a predetermined time with an RTC alarm.
In this case please be careful that the RTC is upgraded (Eurotech BIOS provides a user friendly interface to
update the time and date), users have to initialise the RTC alarm registers and place the CPU into Low
power consumption mode, when RTC reach RTC alarm count the CPU is waked up.
Please refer to Chapter 6 for a practical example using the Wake on RTC functionality.
An0065. CPU-1450 Soft Power Management