User Manual

GM862-QUAD / PY Hardware User Guide
1vv0300748 Rev. 5 - 20/09/07
Reproduction forbidden without Telit Communications S.p.A. written authorization - All Rights Reserved page 60 of 68
10.6 Using the Buzzer Output GPIO7
The GPIO7 pin, when configured as Buzzer Output, is controlled by the GM862-QUAD / PY module
and will drive with appropriate square waves a Buzzer driver.
This permits to your application to easily implement Buzzer feature with ringing tones played at the call
incoming, on SMS incoming or simply playing a tone 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.