User's Manual

LE910 Hardware User Guide
1vv0301089 Rev.3 – 09-06-2014
Reproduction forbidden without Telit Communications S.p.A. written authorization - All Rights Reserved page 57 of 79
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 LE910 modules, the STAT_LED needs an external transistor to drive an external LED.
Therefore, the status indicated in the following table is reversed with respect to the pin status.
Device Status
LED status
Device off
Permanently off
Net search / Not registered / turning
off
Fast blinking
(Period 1s, Ton 0,5s)
Registered full service
Slow blinking
(Period 3s, Ton 0,3s)
Voice Call Active
Permanently on
A schematic example could be: