User's Manual

Telit GE863-GPS

Hardware User guide

1vv0300714, Rev. ISSUE#0, - 21/02/06

8.3 Using the Alarm Output GPIO6

The GPIO6 pad, when configured as Alarm Output, is controlled by the GE863-GPS module and

will rise when the alarm starts and fall after the issue of a dedicated AT command.

This output can be used to power up the GE863-GPS controlling microcontroller or application

at the alarm time, giving you the possibility to program a timely system wake-up to achieve

some periodic actions and completely turn off either the application and the GE863-GPS during

sleep periods, drammatically reducing the sleep comsumption to few μA.

In battery powered devices this feature will greatly improve the autonomy of the device.

8.4 Using the Buzzer Output GPIO7

The GPIO7 pad, when configured as Buzzer Output, is controlled by the GE863-GPS module

and will drive with appropriate square waves a Buzzer driver.

This permits to your application to easily implement Buzzer feature with ringing tones or melody

played at the call incoming, tone playing on SMS incoming or simply playing a tone or melody

when needed by your application.

A sample interface scheme is included below to give you an idea of how to interface a Buzzer to

the GPIO7:

NOTE: To correctly drive a buzzer a driver must be provided, its characteristics depend on the

Buzzer and for them refer to your buzzer vendor.