User's Manual

LE910 V2 HARDWARE USER GUIDE 1VV0301200 Rev.2 Preliminary • 2015-08-04 33 of 81
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A flow chart showing the AT commands managing procedure is displayed below:
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 LE910 V2 when the module is powered
off or during an ON/OFF transition.
“Start AT CMD”
START
Delay = 300 msec
Enter AT <CR>
GO TO
“HW Shutdown
Unconditional”
AT answer in
1 sec ?
GO TO
“Modem ON Proc.”
“Start AT CMD”
END
Y
N