UTC 1812A/1812B/1813 CMOS IC
UTC UNISONIC TECHNOLOGIES CO., LTD. 1
QW-R502-006,B
SINGLE SOUND GENERATOR
DESCRIPTION
The UTC 1812A/1812B/1813 is a CMOS LSI chip designed
for use in sound effect products .It is equipped with tone
circuit, noise circuit and other control logic to generate
different sounds including rifle gun, machine gun, booming
sound, door bell, alarm etc. The customer supplied sound
source can be analyzed and programmed into an internal
ROM by changing a mask layer during device fabrication. The
UTC 1812A/1812B/1813 is suitable for various toy
applications.
FEATURES
*Single power supply :2.4~3.3V
*Low standby current at 3V,1μA typ
*Auto power-off function
*Speaker or direct piezo application
*Built-in envelope control circuit
*1Hz-8Hz programmable LED flash output
*Minimum external components
*Low operating current
*Strong driving capability
DIP-14
DIP-8
PIN CONFIGURATIONS
DIP-8
OSC1
1
2
3
4
7
6
5
KEYOUT
VSS
VDD
8
OUT
LED
OSC2
1812A
DIP-8
OSC1
1
2
3
4
7
6
5
KEYOUT
VSS
VDD
8
OUT
ENV
OSC2
1812B
DIP-14
1
2
3
4
7
6
5
TEST1
OSC1
VDD
KEY NC
TEST3
LED
OSC2
ENV
OUT
OUT
NC
VSS
TEST2
8
9
10
11
12
13
14
1813
UTC 1812A/1812B/1813 CMOS IC
UTC UNISONIC TECHNOLOGIES CO., LTD. 2
QW-R502-006,B
BLOCK DIAGRAM
Oscillator Divider Speed
Generator
LED
Divider
Key
Input
Logic
Tone
Generator
Noise
Generator
Selector &
Envelope
Circuit
Output
Divider
OSC1
OSC2
KEY
TEST1 TEST2 TEST3 ENV VDD VSS
OUT
OUT
LED
PAD COORDINATES
PAD No. X Y
1 90 1467
2 87 178
3 428 87
4 669 87
5 810 87
6 959 87
7 1241 87
8 1246 266
9 1251 1462
10 1109 1462
11 967 1462
(0,0)
12 823 1462
CHIP SIZE: 1.34 ×1.56mm
SUBSTRATE: VDD
UTC 1812A/1812B/1813 CMOS IC
UTC UNISONIC TECHNOLOGIES CO., LTD. 3
QW-R502-006,B
PAD DESCRIPTION
PAD No. SYMBOL DESCRIPTION
1 VSS Negative power supply, GND
2 OUT Sound output pad, out of phase to pad 3
3 OUT Sound output pad
4 ENV Sound envelope control pad
5 TEST3 For IC test only
6 LED LED flash output pad
7 VDD Positive power supply
8 KEY Key input pad, low active
9 OSC2 Oscillator output pad
10 OSC1 Oscillator input pad
11 TEST1 For IC test only
12 TEST2 For IC test only
ABSOLUTE MAXIMUN RATINGS *
PARAMETER SYMBOL VALUE UNIT
Supply Voltage Vcc -0.3~5 V
Input Voltage VIN Vss-0.3 ~ VDD+0.3 V
Operating Temperature Topr 0~70 °C
Storage Temperature Tstg -50~125 °C
*Note: Stresses above those listed under ”Absolute Maximum Ratings” may cause permanent damage to the device.
These are stress ratings only. Functional operation of this device at these or any other conditions above those
indicated in the operational sections of this specification is not implied and exposure to absolute maximum rating
conditions for extended periods may affect device reliability.
ELECTRICAL CHARACTERISTICS
PARAMETER SYMBOL TEST CONDITIONS MIN TYP MAX UNIT
Operating Voltage VDD VDD =3V 2.4 3 3.3 V
Standby Current ISTB VDD =3V 1 5 μA
Operating Current IDD VDD =3V, NO LOAD 300 600 μA
Output Source Current IOH VDD =3V, VOH=2.5V -1 -2 mA
Output Sink Current IOL VDD =3V, VOL=0.5V 1 2 mA
ENV Source Current IENV VDD =3V, VOH=2.5V -1 -2 mA
LED Source Current ILED VDD =3V, VOH=2.5V -1 -2 mA
Oscillator Frequency FOSC R=330kΩ 64 kHz
UTC 1812A/1812B/1813 CMOS IC
UTC UNISONIC TECHNOLOGIES CO., LTD. 4
QW-R502-006,B
PARAMETER SYMBOL TEST CONDITIONS MIN TYP MAX UNIT
“H” Input Voltage VIH VDD =3V 2.4 V
“L” Input Voltage VIL VDD =3V 0.6 V
TIMING DIAGRAM
With an envelope
KEY
OSCILLATOR
OUT
No envelope
OSCILLATOR
OUT
KEY
OUT
UTC 1812A/1812B/1813 CMOS IC
UTC UNISONIC TECHNOLOGIES CO., LTD. 5
QW-R502-006,B
APPLICATION CIRCUITS
Speaker output with an envelope
1812B
1
234567
8
Rosc
VDD
KEY
8050
VDD
100Ω
100Ω
33μ
+
121110 9
*The IC substrate should be connected to VDD in the PCB layout artwork.
8050
VDD
VDD
100Ω
33μ+
Rosc
1
2
3
45
6
7
8
VDD
KEY
OSC2
OSC1VSS
OUT
OUT
ENV
1812B
Speaker output without an envelope
1812A
1
234567
8
Rosc
VDD
KEY
8050
VDD
100Ω
100Ω
121110 9
*The IC substrate should be connected to VDD in the PCB layout artwork.
8050
VDD
VDD
100Ω
Rosc
1
2
3
45
6
7
8
VDD
KEY
OSC2
OSC1VSS
OUT
OUT
LED
100Ω
1812A
UTC 1812A/1812B/1813 CMOS IC
UTC UNISONIC TECHNOLOGIES CO., LTD. 6
QW-R502-006,B
Piezo output without an envelope
1812A
1
234567
8
Rosc
KEY
VDD
100Ω
121110 9
*The IC substrate should be connected to VDD in the PCB layout artwork.
100Ω
VDD
Rosc
1
2
3
45
6
7
8
VDD
KEY
OSC2
OSC1VSS
OUT
OUT
LED
100Ω
Piezo
Piezo
1812A
Hand touch trigger
1812A
1
234567
8
Rosc
VDD
100Ω
121110 9
*The IC substrate should be connected to VDD in the PCB layout artwork.
100ΩVDD
Rosc
1
2
3
45
6
7
8
VDD
KEY
OSC2
OSC1VSS
OUT
OUT
LED
100Ω
VDD
8050
Hand
Touch
VDD
8050
Hand
Touch
piezo
piezo
1812A
UTC 1812A/1812B/1813 CMOS IC
UTC UNISONIC TECHNOLOGIES CO., LTD. 7
QW-R502-006,B
APPLICATION CIRCUITS(1812-SIREN I)
1
234567
8
VDD
100Ω
121110 9
*The IC substrate should be connected to VDD in the PCB layout artwork.
KEY
OUT
LED
100Ω
VDD
8050
100Ω
390kΩ
1812A
T=0.5sec
When Fosc=64kHz
ENV
Piezo
KEY
(repeat 15cycle)
