BU8763FV
Communications
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Melody LSI for Cellular Phone
BU8763FV
BU8763FV is a melody LSI for cellular phones that can produce triple chords simultaneously.
Tone and volume in each sound source can be controlled separately by serial control. Master volume is integrated.
Master clock can be selected from 5.376MHz or 2.688MHz. Output can be changed sine wave or special square wave.
The special square wave is a waveform that can take sound pressure by even a small speaker.
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!Applications
Melody sound at receiving or holding a call
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!Features
1) Generating 3 waves, Controlled by CPU
2) Selectable master clock (5.376MHz / 2.688MHz)
3) Changeable parameter for wave generate
4) Including DTMF create function
5) Changeable Sine wave or special square wave
6) Serial control from CPU
7) Include smoothing filter (fc=20KHz)
8) SSOP-B16 package
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!Absolute maximum ratings (Ta=25°C)
Parameter Symbol Limits Unit
DVDD
AVDD
VD
IN
VA
IN
Pd
Tstg
Topr
−0.3 to +4.5
−0.3 to +4.5
DVSS−0.3 to DVDD+0.3
AVSS−0.3 to AVDD+0.3
450
∗
−50 to +125
−20 to +70
V
V
V
V
mW
°C
°C
Digital supply voltage
Analog supply voltage
Input voltage for digital
Input voltage for analog
Power dissipation
Storage temperature range
Operating temperature range
∗ To use at temperature higher than 25 C, derate 4mW / C, PCB(70mm 70mm, d=1.6mm glass epoxy)
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