User's Manual

CE910 Family Hardware User Guide
1vv0301010 Rev.11 – 2015-10-27
Reproduction forbidden without written authorization from Telit Communications S.p.A. - All Rights Reserved.
Page 25 of 75
4.2.2. Turning OFF by tying low ON_OFF*
To turn OFF the CE910 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 CE910 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 CE910 so it cannot be fixed
definitely.
Normally it will be 10 seconds after releasing ON_OFF* and DTE should monitor the status of
PWRMON to see the actual power off.