PF403-03
SVM4100C Series
Simple Imitaion Sound IC
ge
lta
Votion
w
Lo pera cts
O rodu
P
qPiezo
Buzzer Direct Drive
qSelectable
Play Modes
qNo
External Components are Required
s
DESCRIPTION
The SVM4100C series are sound CMOS IC, designed for playing simple imitation sound automatically. And it is
only required 1.5 V battery and Piezo buzzer as external components to minimize the total cost and to make a
smallest module. The applications are sound greeting cards and toys etc.
s
FEATURES
qOperation
voltage range: 1.5 V to 3.0 V
qPiezo
direct drive capability
qTypical
oscillation frequency is 50 kHz. No external components are required for oscillation
qLow
power dissipation
qThree
play modes (one level-hold and two one-shot) selectable by pin selection
• Level-hold type ............................. The sound continues on with the sound start input being applied. It stops
when the input turns off.
• One-shot type ............................... The sound starts when the start input is applied. It automatically stops
when it comes to its end.
qOn-chip
oscillation resistor and capacitor
qPackage:
DIP-8pin (plastic) or Die form
s
BLOCK DIAGRAM
ROM
Oscillator
Divider
Sound Generator (2)
Timing
Generator
ROM
Address Counter
Sound Generator (1)
ROM
ST1
ST2
ST3
ROM
OUT
Frequency Generator
Sound Control
OUT
Control
ROM
Address Counter
V
SS
V
DD
1
SVM4100C Series
s
PAD LAYOUT AND COORDINATES
6
7
8
9 10
Pad No.
1
2
3
4
5
6
7
8
9
10
11
s
PAD AND PIN DESCRIPTION
Pad Name
Pad No.
Pin Name
Pin No.
5
Y
X
11
Pad Name
(NC)
(NC)
ST1
ST2
VSS
OUT
OUT
ST3
VDD
(NC)
(NC)
Function
Do not connect these pads (pins).
Input terminal 1 for sound start
Input terminal 2 for sound start
Power input (0V)
Output terminal for Piezo buzzer
Output terminal for Piezo buzzer
Input terminal 3 for sound start
Power input(+)
Do not connect these pads (pins).
4 PAD Size
3
96 X 96 (No.1-8, 10, 11)
2 CHIP Size
1
202 X 96 (No.9)
(NC)
(NC)
ST1
ST2
V
SS
OUT
OUT
ST3
V
DD
(NC)
1
2
3
4
5
6
7
8
9
10
11
1
—
2
3
4
5
6
7
8
—
2040 X 2110
X
867
867
867
867
650
-867
-867
-867
-597
-348
653
[Unit:
µm]
Y
-902
-645
623
902
902
802
436
-902
-902
-902
-902
(NC): Do not connect this pad, because it is dedicated to LSI testing.
s
PIN CONFIGURATION
DIP–8 pin
NC
ST1
ST2
V
SS
1
8
V
DD
ST3
OUT
OUT
SVM4100C
2
3
4
7
6
5
NC: Non Connection
2
SVM4100C Series
sABSOLUTE
MAXIMUM RATINGS
Rating
Supply voltage
Input/Output voltage
Operating temperature
Storage temperature
Soldering temperature and time
Symbol
V
DD
V
I/O
T
opr
T
stg
T
sol
Value
–0.3 to 5.0
–20 to 85(V
DD
≥
1.5V)
–65 to 150
260
°C,
10s (at lead)
–0.2 to V
DD
+0.2
(V
SS
=0V)
Unit
V
V
°C
°C
—
sELECTRICAL
CHARACTERISTICS
Characteristic
Supply voltage
High level input voltage
Low level input voltage
High level input current (2)
High level input current (3)
Low level input current
High level output current (1)
Low level output current (1)
Standby supply current
Operating supply current
i
A different pull-down resistance results.
(V
SS
=0V, Ta=25°C)
Condition
—
—
—
ST1, ST2, V
DD
=1.5V, V
IH2
=V
DD
ST3, V
DD
=1.5V, V
IH3
=V
DD
ST1, ST2, ST3, V
DD
=1.5V, V
IL
=V
SS
OUT, OUT, V
DD
=1.5V, V
OH1
=0.75V
OUT, OUT, V
DD
=1.5V, V
OL1
=0.75V
V
DD
=1.5V, ST1, ST2, ST3, Open
V
DD
=
1.5V
No load at OUT, OUT
Application
circuit
Direct drive
i
Symbol
V
DD
V
IH
V
IL
I
IH2
I
IH3
I
IL
I
OH1
I
OL1
I
DDS
I
DDO
Min.
1.2
V
DD
–0.3
V
SS
—
1.5
—
2.0
2.0
—
—
—
Typ.
1.5
—
—
1.5
4.5
—
—
—
—
—
400
Max.
3.5
V
DD
V
SS
+0.3
—
15
0.05
—
—
0.3
50
—
Unit
V
V
V
µA
µA
µA
mA
mA
µA
µA
µA
sOSCILLATION
CHARACTERISTICS
Characteristic
Frequency deviation
Oscillation self-start voltage
Oscillation stop voltage
Oscillation frequency voltage deviation
Symbol
f
OSC
V
STA
V
STP
Condition
V
DD
=1.5V
—
—
Min.
–30
1.2
—
—
Typ.
50.0kHz
—
—
—
(V
SS
=0V, Ta=25°C)
Max.
30
—
1.2
30
Unit
%
V
V
%
ε
f
ε
f =
fosc(1.7V)–fosc(1.2V)
fosc(1.7V)
Note 1 :
Note 2 :
Note 3 :
Note 4 :
Don't touch the oscillation circuit with your hand while playing sound or activating "ST1", "ST2" or "ST3" signal.
Justly settle power supply (dry cells), not so as to chatter (over than 10 msec).
Disconnect "ST1", "ST2", to V
DD
in case of level hold type or switch the power supply off, when anything unusual
should happen.
Don't make bonding to pads of "No.1", "No.2", "No.10" and "No.11" when you assemble SVM4100.
3
SVM4100C Series
s
CONTROL FUNCTIONS
q
Control(f
OSC=
50KHz)
(Play start)
on
ST1, ST2
T
ON
T
ON
If T
ON
(the ST1 and ST2 pin input ON time) is shorter than
7.68ms, the input is assumed to be chattering.
The minimum input pulse width sufficient to start sound
playing (T
ON
) must satisfy the following conditions:
Level-hold type ............................... T
ON
>81.92ms
One-shot type ................................ T
ON
>20.48ms
As long as T
ON
is valid, the sound starts 94.72ms (=T
st
) after
the ST input turns on.
If T
ch
(the chattering ON time) is smaller than K
×
time of one
beat of .
(Where K is a positive integer), then the time from ST input
OFF
Stop
Output
T
st
Play
(Play stop)
r
Level-hold type
ST1, ST2
ON
T
ch
OFF to sound stop (T
stp
) must satisfy the following
condition:
128
≤
T
stp
≤
K
×
(time of one beat of
f
OSC
)
Output
Play
Stop
T
stp
Any chattering that may continue after the sound has stopped
as a result of the input turning off is eliminated by the
chattering killer circuit with the input on.
r
One-shot type
The sound automatically stops at its last note. In this case, the length of the last note is reduced by 384/f
OSC
sec
(=7.68msec at f
OSC
=50.0kHz).
q
Sound play modes
r
One-shot C type
If input<sound length, sound is played in level-hold type. If input>sound length, sound is played once,
then automatically stops at its end.
ST2
Sound
Oscillation
Pull-down
resistance
270kΩ
1MΩ
270kΩ
1MΩ
270kΩ
One play cycle
r
One-shot A type
sound is played once, then automatically stops at its end independently of the length of input.
ST1 or ST2
Sound
Oscillation
Pull-down
resistance
270kΩ
1MΩ
270kΩ
1MΩ
270kΩ
One play cycle
One play cycle
4
SVM4100C Series
r
Level-hold type
Sound is repeated while start input remains on. It stops when the input turns off.
ST1
ST2
Sound
Pull-down 135kΩ
resistance
(parallel at 2 pins)
One play cycle One play cycle Midway
500kΩ
through one sound cycle
135kΩ
q
Selection of play types
Connect to V
DD
either combinedly or independently as required for a target play type.
ST1
H
H
ST2
H
H
ST3
H
H
H
SVM4100C
Play mode
Level-hold type
One-shot C type
One-shot A type
q
Power saving function
The pull-down resistance is controlled so as to save power according to the oscillation stop input level ("H" or
"L") as shown in the play type time chart. This function provides low current dissipation, assuring long life.
• Oscillation stop function:
When the sound terminates, the internal oscillation stops independently of the input level at ST1/ST2,
placing the circuit into standby mode.
• Pull-down resistance control function:
Depending on the input level ("H" or "L"), the pull-down resistance at ST1/ST2 changes as follows:
While V
DD
is being applied (input to ST1, ST2) ...... typically 1M-ohm/input
V
SS
(standby) ........................................................... typically 270k-ohms/input
This function is especially effective for a configuration using Cds. If the resistance of the Cds decreases(bright
resistance), the pull-down resistance becomes larger. If the resistance of the Cds increases(dark resistance),
the pull-down resistance becomes smaller. Thus the total resistance is increased, minimizing the current to be
consumed by the Cds and IC.
sBASIC
EXTERNAL CONNECTION
PIEZO
6
8
7
V
DD
ST3
ST1
2
ST2 V
SS
3
4
5
8
V
DD
PIEZO
6
5
8
7
ST2 V
SS
3
4
Cds
V
DD
ST3
ST1
2
ST2 V
SS
3
4
PIEZO
6
5
OUT OUT
7 ST3
ST1
2
OUT OUT
OUT OUT
(1)
(2)
(3)
Configuration using Cds
5
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