User's Guide

ME910C1 HW User Guide
1VV0301351 Rev. 2 Page 51 of 81 2017-07-19
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 ME910C1 when the module is powered
off or during an ON/OFF transition.
5.7.2. 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.
5.7.3. 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 ME910C1 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
Registered in idle + power saving
It depends on the event that triggers the
wakeup (In sync with network paging)
Connecting Blinking 1 sec on + 2 sec off