UTC UTCUM66T32L, UTCUM66T19L, UTCUM66T05L Datasheet

UTC UM66TXXL LINEAR INTEGRATED CIRCUIT

UTC UNISONIC TECHNOLOGIES CO., LTD.

1

QW-R501-001,B

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

XXL

Song series

LEVEL HOLD Mode

SONG SERIES LIST

P/N SONG NAME

UTC UM66T05L Home sweet home
UTC UM66T19L For Alice
UTC UM66T32L COO COO waltz

UTC UM66TXXL LINEAR INTEGRATED CIRCUIT

UTC UNISONIC TECHNOLOGIES CO., LTD.

2

QW-R501-001,B

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

µA

O/P Drive Current Io/p Vdd=1.3V,O/P=0.8V 400 600

µA

O/P Sink Current Io/p Vdd=1.3V O/P=0.5V open 350 450

µA
Frequency Deviation
Deviation Per Lot

∆F/F

Vdd=1.5V -12 %

Frequency Stability

∆F/F

Fosc(1.6V) Fosc(1.3V)

Fosc(1.3V)

−

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.