GE863-PRO3Hardware User Guide

1vv0300773a Rev. 0 - 24/01/08

4.2Turning OFF the GE863-PRO3GSM/GPRS Engine

The turning off of the device can be done in two ways:

by software command (see GE863- GE863-PRO3Software User Guide)

by hardware shutdown

When the device is shut down by software command or by hardware shutdown, it issues to the network a detach request that informs the network that the device will not be reachable any more.

4.2.1Hardware shutdown

To turn OFF the GE863-PRO3the pad ON/OFF*-GSM must be tied low for at least 1 second and then released.

The same circuitry and timing for the power on shall be used.

The device shuts down after the release of the ON/OFF*-GSM pad.

TIP: To check if the device has powered off, the hardware line PWRMON should be monitored. When PWRMON goes low, the device has powered off.

4.3Hardware Unconditional Reboot of GSM/GPRS Engine

To unconditionally Reboot the GE863-PRO3, the pad RESET*-GSM must be tied low for at least 200 milliseconds and then released.

The maximum current that can be drained from the RESET*-GSM pad is 0,15 mA.

A simple circuit to do it is:

RESET*-GSM

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Unconditional Reboot impulse

GND

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Telit Wireless Solutions 1vv0300773a manual 2Turning OFF the GE863-PRO3GSM/GPRS Engine, Hardware shutdown

1vv0300773a specifications

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