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Wireless CPU

Q24 Series

Interfaces

3.13 Buzzer Output

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WM_PGM_Q24NG_PTS_001-005

November 20, 2007

nterface is acce an open drain embedded on the Wireless

CPU

Q24 Series.

A buzzer may be directly connected

Pin description

3.13.1 Hardware Description

The buzzer i ssible through

between this output and VBATT.

Equivalent circuit

Q24 Series

Signal Pin I/O I/O type Description

BUZZER 49 O Analog Buzzer output

Operating conditions

Parameter Condition Min Max Unit

VOL Iol = 100mA 0.4 V

IPEAK VBATT = VBATT Max 100 mA

Caution:

A diode against transient peak voltage must be connected as described below.

Figure 7: Buzzer connection

For the implementation of the buzzer interface, refer to the Customer Design

Guid neli es [6].

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Wavecom G2 Dokumentacja Strona 46