Datasheet

UNISONIC TECHNOLOGIES CO., LTD
UM68TXX
Preliminary
CMOS IC
128 NOTES DUAL TONE
MELODY GENERATOR PWM
OUTPUT DIRECT TO BUZZER
AND SPEAKER

DESCRIPTION
1
The UTC UM68TXX series are CMOS LSI designed for
using in door bell, telephone and toy application. It is an on-chip
ROM programmed for musical performance. Produced by
CMOS technology, the device results in very low power
consumption. Since the UTC UM68TXX series include
oscillation circuits a compact melody module can be constructed
with only a few additional components.

FEATURES
* 128-Note Rom memory
* 2.5V ~ 5V power supply and low power consumption
* Dynamic speaker can be driven with external NPN transistor
* 14 tempos available through mask setting
* 15 beats available
* 27 notes (including rest) available

Package
TO-92
TO-92
Pin Assignment
1
2
3
VSS
VDD
O/P
VSS
VDD
O/P
Packing
Tape Box
Bulk
SONG SERIES LIST
P/N
UTC UM68T05
UTC UM68T08
UTC UM68T19

* OSC resistor hold mode
* Power on reset: melody begins from the first
note
* Built in level hold mode
* PWM output
ORDERING INFORMATION
Order Number
Lead Free
Halogen Free
UM68TxxL-T92-B
UM68TxxG-T92-B
UM68TxxL-T92-K
UM68TxxG-T92-K

TO-92
SONG NAME
Sweet Home
Happy Birthday
For Alice
MARKING
www.unisonic.com.tw
Copyright © 2014 Unisonic Technologies Co., LTD
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QW-R502-924.b
UM68TXX

Preliminary
CMOS IC
ABSOLUTE MAXIMUM RATING
PARAMETER
SYMBOL
RATINGS
UNIT
DC Supply Voltage
VCC
0V~5V
V
Input/output Voltage
VIN/VOUT
GND-0.2V~VDD +0.2V
V
Junction Temperature
TJ
125
°C
Operating Temperature
TOPR
-20~+85
°C
Storage Temperature
TSTG
-40~+150
°C
Note: Absolute maximum ratings are those values beyond which the device could be permanently damaged.
Absolute maximum ratings are stress ratings only and functional device operation is not implied.

ELECTRICAL CHARACTERISTICS (VDD=3.0V, GND=0V, TA=25°C, unless otherwise specified)
PARAMETER
Operating Voltage
Operating Current
SYMBOL
VDD
IDD
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
TEST CONDITIONS
MIN
2.5
TYP
3.0
3
MAX
5
10
UNIT
V
mA
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UM68TXX

Preliminary
CMOS IC
TYPICAL APPLICATION CIRCUIT
Switch
Speaker
VDD
2
UTC
UM68TXX
3
2.5V-5.0V
O/P
1
VSS
UTC assumes no responsibility for equipment failures that result from using products at values that
exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or
other parameters) listed in products specifications of any and all UTC products described or contained
herein. UTC products are not designed for use in life support appliances, devices or systems where
malfunction of these products can be reasonably expected to result in personal injury. Reproduction in
whole or in part is prohibited without the prior written consent of the copyright owner. The information
presented in this document does not form part of any quotation or contract, is believed to be accurate
and reliable and may be changed without notice.
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
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QW-R502-924.b
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