GE/GC864-QUAD V2 and GE864-GPS Hardware User Guide
1vv0300915 Rev.5 – 2011-10-03
Reproduction forbidden without Telit Communications S.p.A. written authorization - All Rights Reserved.
Page 27 of 94
TIP:
To check if the device has powered on, the hardware line PWRMON should be monitored.
After 1000ms the line raised up the device could be considered powered on.
NOTE:
When the power supply voltage is lower than 3.4V, to turn ON the module, the pad ON# must
be tied low for at least 3 seconds.
For example:
1-
Let us assume you need to drive the ON# pad with a totem pole output from +1.8V up to
5V microcontroller:
2-
Let us assume you need to drive the ON# pad directly with an ON/OFF button: