User Guide

ME910G1 Preliminary HW Design Guide
1VV0301593 Rev.2 Page 57 of 95 2020-01-13
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
ME910G1 when the module is powered off or during an ON/OFF
transition.
Refer to ME910G1 series AT command reference guide for GPIO
pins configuration.
5.8.2. Using a GPIO as OUTPUT
The GPIO pads, when used as outputs, can drive 1.8V CMOS digital devices or
compatible hardware. When set as outputs, the pads have a push-pull output and
therefore the pull-up resistor may be omitted.
5.8.3. Indication of network service availability
The STAT_LED pin status shows information on the network service availability and Call
status.
The function is available as alternate function of GPIO_01 (to be enabled using the
AT#GPIO=1,0,2 command).
In the ME910G1 modules, the STAT_LED needs an external transistor to drive an
external
LED and its voltage level is defined accordingly to the table below:.
Device Status
Led Status
Device off
Permanently off
Not Registered
Permanently on
Registered in idle
Blinking 1sec on + 2 sec off