Telit Wireless Solutions HE910-EU V2, Hardware User'S Manual

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TIP:
To check if the device has powered off hardware line PWRMON must be monitored. When
PWRMON goes low, the device has powered off.
4.2.2. Hardware Shutdown
To turn OFF the HE910 V2 the pad ON_OFF* must be tied low for at least 2 seconds and
then released. The same circuitry and timing for the power on must be used.
When the hold time of ON_OFF* is above 2 seconds, the HE910 V2 goes into the finalization
state and will shut down PWRMON at the end of this state.
The period of the finalization state can vary according to the state of the HE910 V2 so it
cannot be fixed definitely.
Normally it will be above 10 seconds after releasing ON_OFF* and DTE should monitor the
status of PWRMON to see the actual power off.
TIP:
To check if the device has powered off, hardware line PWRMON must be monitored. When
PWRMON goes low, the device has powered off.