GE866-QUAD Hardware User Guide
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Page 23 of 82
Mod. 0805 2011-07 Rev.2
5.3.
Fast SYSHALT the GE866-QUAD
The procedure to power OFF of module described in Chapter 5.2, normally takes up to 10 second to de-attach
the network and internal filesystem properly closed.
The Fast SYSHALT feature permits to reduce the current consumption and the time-to-power SYSHALT to
minimum values.
NOTE:
Refer to AT command reference guide (Fast Sys Halt - #FASTSYSHALT) in order
to set up detailed AT command.
5.3.1.
Fast SYSHALT by Hardware
The module provides an input to give to the FW of the module advance notice that the power source is failing
and allow it to prepare for the power failure.
The Fast SYSHALT can be triggered by configuration of any GPIO. HIGH level to LOW level transition of
GPIO forces the fast power down procedure.
NOTE:
Consider voltage drop under max current conditions when defining the voltage
detector threshold in order to avoid unwanted shutdown.
