User's Manual

CL865-DUAL Hardware User Guide
1vv0301104 Rev.1 – 2014-03-07
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Reserved. Page 21 of 70
Mod. 0805 2011-07 Rev.2
The following flow chart shows the proper turnoff procedure:
WARNING:
POWERMON can be used to monitor only the power on but it cannot be used to monitor the
power off because it remains high.
NOTE:
In order to prevent a back powering effect it is recommended to avoid having any HIGH logic
level signal applied to the digital pins of the CL865 when the module is powered off or during
an ON/OFF transition.
Modem OFF
Proc.
AT#SYSHALT
Disconnect PWR
supply
10s timeout
Modem ON Proc.
Delay 1.5s