Pic 2-5-1
2.6 Suspend/Shutdown/Restart
Suspend
The button can be pressed to switch the status including Suspend/Shutdown/Restart.
When suspending, the screen would be dark and all modules would stop working.
The device would enter the suspend mode when being in non-working status after a specified
time automatically to decrease the consumption.
Wakeup
Press the power button once for device in suspending status, then the device would be
waken up.