: mm錛?/div>
Description
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.
Features
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
Applications
5.0鹵0.2
16
6.4鹵0.3
4.4鹵0.2
9
1. 15鹵0.1
1
8
0. 1
0.65
0.22鹵0. 1
0.3Min.
0. 1
SSOP-B16
Cellular phones with a function to register melody at receiving the call
鈼廇bsolute
Maximum Ratings錛圱a=25擄C錛?/div>
Parameter
Pwrspl vlae
oe upy otg
Pwrdsiain
oe ispto
Symbol
VDD
Pd
Limits
鈭?3鈭?錛?5
.
.
40
5
鈭? 鈭?錛?
0
5
鈭? 鈭?錛?5
0
2
錛?/div>
Unit
V
mW
Oeaigtmeauerne
Topr
prtn eprtr ag
Tstg
Soaetmeauerne
trg eprtr ag
錛奃erating
: 4.5mW錛徛癈 for operation above Ta=25擄C
擄C
擄C
鈼廟ecommended
Operating Conditions錛圱a=25擄C錛?/div>
Parameter
Pwrspl vlae
oe upy otg
Symbol
VDD
Min.
22
.
Typ.
25
.
Max.
36
.
Unit
V
November, 2000
0.15鹵0. 1
1
2
