Melody LSI for Cellular Phone
BU8763FV
Communications
Melody LSI for Cellular Phone
BU8763FV
BU8763FV is a melody LSI for cellular phones that can pr...
Description
BU8763FV
Communications
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.
!Applications
Melody sound at receiving or holding a call
!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
!Absolute maximum ratings (Ta=25°C)
Parameter Symbol DVDD AVDD VDIN VAIN Pd Tstg Topr
+
Limits −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
Unit 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)
1/11
BU8763FV
Communications
!Block diagram
TEST1
TEST2
TEST3
TEST4
DGND
16
16
15
14
13
12
11
10
TEST CIRCUIT
WAVE GEN 1(h) WAVEFORM GENERATOR WAVE GEN 2(m) WA...
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