User's Manual

GE/GC864-QUAD V2 and GE864-GPS Hardware User Guide
1vv0300915 Rev.2 – 2011-06-15
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Reserved. Page 30 of 97
5.2. Turning OFF the GE/GC864-QUAD V2 and GE864
GPS
The turning off of the device can be done in two ways:
• via AT command (see Software User Guide AT#SHDN)
• by tying low pin ON#
Either ways, when the device issues a detach request to the
network informing that the device will not be reachable any
more.
To turn OFF the module the pad ON# must be tied low for at
least 2 seconds and then released.
The same circuitry and timing for the power on shall be used.
The device shuts down after the release of the ON# pad.
The following flow chart shows the proper turnoff procedure: