User Guide

ME910G1 HW Design Guide
1VV0301593 Rev.7 Page 45 of 98 2021-02-02
Note: Do not use any pull up resistor on the HW_SHUTDOWN* line
nor any totem pole digital output. Using pull up resistor may bring to
latch up problems on the ME910G1 power regulator and improper
functioning of the module.
To proper power on again the module please refer to the related
paragraph (“Power ON”)
The unconditional hardware shutdown must always be implemented
on the boards and should be used only as an emergency exit
procedure.
Fast shut down
The procedure to power off ME910G1 described in Chapter 5.3 normally takes more than
1 second to detach from the network and make ME910G1 internal filesystem properly
closed.
In case of unwanted supply voltage loss the system can be switched off without any risk
of filesystem data corruption by implementing Fast Shut Down feature.
Fast Shut Down feature permits to reduce the current consumption and the time-to-
poweroff to minimum values.
Note: Refer to ME910G1 series AT command reference guide (Fast
shut down - #FASTSHDN) in order to set up detailed AT command.
Fast Shut Down by Hardware
The fast shut down can be triggered by configuration of any GPIO. HI level to LOW level
transition of GPIO commands fast shut down.