User's Manual

HE910 Hardware User Guide
1vv0300925 Rev.9 – 07-02-2012
Reproduction forbidden without Telit Communications S.p.A. written authorization - All Rights Reserved page 26 of 80
TIP:
To check if the device has been powered off, the hardware line PWRMON must be
monitored. The device is powered off when PWRMON goes low.
NOTE:
In order to avoid a back powering effect it is recommended to avoid having any HIGH
logic level signal applied to the digital pins of the HE910 when the module is powered
off or during an ON/OFF transition.