UTC UM66TXXL
CMOS IC
UTC
UNISONIC TECHNOLOGIES CO., LTD.
1
QW-R501-001,D
MELODY INTEGRATED
CIRCUIT
DESCRIPTION
The UTC UM66TXXL 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 UM66TXXL series
include oscillation circuits a compact melody module
can be constructed with only a few additional
components.
FEATURES
*64-Note Rom memory
*1.5V ~ 4.5V power supply and low power
consumption
*Dynamic speaker can be driven with external NPN
transistor
*OSC resistor hold mode
*Power on reset: melody begins from the first note
*Built in level hold mode
TO-92
1
1: VSS 2: VDD 3: O/P(Melody output)
ORDERING INFORMATION
UTC UM66T X X L
Song series
LEVEL HOLD Mode
SONG SERIES LIST
P/N SONG
NAME
UTC UM66T05L
Home Sweet Home
UTC UM66T11L
Love Me Tender
UTC UM66T19L
For Alice
UTC UM66T32L
COO COO waltz
UTC UM66TXXL
CMOS IC
UTC
UNISONIC TECHNOLOGIES CO., LTD.
2
QW-R501-001,D
ABSOLUTE MAXIMUM RATINGS
(Operating temperature range applies unless otherwise specified.)
PARAMETER SYMBOL
VALUE
UNIT
DC supply voltage
1.5 ~ 4.5
V
Operating Ambient Temperature Range
Topr
-10 ~ +60
C
Storage Temperature Range
Tstr
-55 ~ +125
C
Notes:
Stress above those listed under absolute maximum ratings may cause permanent damage to the device. These are
stress ratings only. Functional operations of this device at these or any other conditions above those indicated in the
operational section of this specification is not implied and exposure to absolute maximum ratings conditions for
extended periods may affect device reliably.
ELECTRICAL CHARACTERISTICS
(Vss=0V, Fosc=65536Hz, Tj=25
C, unless otherwise specified)
PARAMETER SYMBOL
TEST
CONDITIONS
MIN
TYP
MAX
UNIT
Operating Voltage
BVdd
1.5
4.5
V
Operating Current
Id
Vdd=1.5V O/P open
60
A
O/P Drive Current
Io/p
Vdd=1.5V,O/P=0.8V
400
600
A
O/P Sink Current
Io/p
Vdd=1.5V O/P=0.5V open
350
450
A
Frequency Deviation
Deviation Per Lot
F/F Vdd=1.5V
-12
%
Frequency Stability
F/F
Fosc(1.5V)
Fosc(1.5V)
Fosc(1.6V)
-
10
%
FUNCTIONAL DESCRIPTION
OSCILLATOR CIRCUIT
The oscillator frequency is used as a time for tone and beat generators. Its accuracy affects the quality of the
music.
TONE GENERATOR
Tone Frequencies are oscillator frequencies-M, where m is any even number from 64 to 256. Within a melody
14C scales can be selected including Pause code and End code. The tone generator is a programmed divider, The
Range of Scales is from "C4" to "C6" and range of frequency varies from 258Hz to 23768Hz.
RHYTHM GENERATOR
The rhythm generator is also programmed dividers. It contain 15 available rhythms as
follows:1/4,1/2,3/4,1,1-1/4,1-1/2,1-/3/4,2,2-1/4,2-1/2,2-/3/4,3,3-1/4,3-1/2,3-/3/4.Four rhythms can be selected from
these.
MELODY ROM
The Mask Rom can memorize 64 notes with 6 bit.4 bits are used for controlling the scale code and 2 bits are
used for controlling the rhythm code.
TEMPO GENERATOR
There are 15 available tempos in the UTC UM66T series. The 15 tempos are:128,137,148,160,175,192,213,
240 , 274, 320,480,640,960,1920 J/minute.
UTC UM66TXXL
CMOS IC
UTC
UNISONIC TECHNOLOGIES CO., LTD.
3
QW-R501-001,D
APPLICATION CIRCUITS
Fig.1
Fig.2
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.
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