Tone generator LSI for cellular phones
BU8766FV
Description Dimension （Units : mm）
The BU8766FV is a tone generator IC for producing
a triple chord that has both a RAM and sequencer
to reduce the load of CPU soft. Cellular phones can
give a musical performance by down-loading melody
data from the C-MIDI format. This IC corresponds to
three master clocks and has an adjustment function
for a parameter needed to generate a chord.
Waveform parameter can be selected from sine
wave and special square wave.
00W099A
1) Triple chord can be generated by control from CPU.
2) CPU soft load can be decreased by incorporating
RAM and sequencer.
3) RAM 1kByte as a buffer for download data.
4) Can adjust parameter needed to generate a chord.
5) DTMF generating function
6) Can select a wave parameter for generating sound.
(sine wave/special square wave)
7) Control from CPU by serial data
SSOP-B16
Cellular phones with a function to register melody at receiving the call
November, 2000
Features
Applications
●Absolute Maximum Ratings（Ta=25°C）
Power supply voltage
Power dissipation
Operating temperature range
Storage temperature range
Parameter Limits UnitSymbol
VDD
Pd
Topr
Tstg
450
＋85
＋125
－40
－50
～
＋4.5－0.3～
～
mW
°C
°C
V
Power supply voltage2.52.23.6V
●Recommended Operating Conditions（Ta=25°C）
Parameter Min. Max. UnitTyp.
VDD
Symbol
＊
＊Derating : 4.5mW／°C for operation above Ta=25°C
0.15
±
0.
1
0.22±0. 1
1.
15
±
0.1
0.65
0.
1
1 8
0.3Min.
0. 1
6.4
±
0.3
916
4.4
±
0.2
5.0±0.2