Wavecom GS64 Especificaciones descargar pdf (Pagina 68)

Product Technical Specification & Customer Design Guidelines

Interfaces

3.12 PWM / Buzzer Output

This output is controlled by a PWM controller and provides a buzzer service.

3.12.1 Features

The BUZZER is an open drain one. A buzzer can be directly connected between this

output and VCC. The maximum current is 100 mA (PEAK).

Electrical characteristics

Parameter Condition Minimum

Maximum Unit

Iol = 100mA 0.4

PEAK

VCC = VCCmax 100

Frequency 3 10000*

Duty cycle 0* 100*

*Notes

Mind the maximum frequency and the minimum/maximum duty cycle; they are

limited due to the RC configuration.

When the limits are approached, the amplitude modulation is less fine.

3.12.2 Pin Description

Signal Pin I/O I/O type Reset state

Description

number

BUZZER 31 O Open

drain

Z Buzzer output

See chapter

3.4, “Electrical Information for Digital I/O” on page 30 for 2V8-1, 2V8-2, pull-up and open drain

voltage characteristics and for Reset state definition.

Page: 67 / 116

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prior written agreement.

WA_DEV_Q64_PTS_001-003 January 9, 2009

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Wavecom GS64 Especificaciones Pagina 68