GC864 Hardware User Guide
1vv0300874 Rev.1 – 2010-03-29
Reproduction forbidden without Telit Communications S.p.A. written authorization - All Rights Reserved.
Page 19 of 64
4.2.
Turning OFF the GC864-QUAD V2 / GC864-DUAL V2
Turning off of the device can be done in three ways:
•
by software command (see GC864-QUAD V2 / GC864-DUAL V2 Software
User Guide)
•
by tying low pin ON#
Either ways, the device issues a detach request to network informing that the device
will not be reachable any more. To turn OFF the GC864 via pin ON#, this must be tied
low for at least 1000ms 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# pin.
The following flow chart shows the proper turnoff procedure:
TIP:
To check if the device has powered off, the hardware line PWRMON must be
monitored. When PWRMON goes low, then the device has powered off.