UM66T05L Datasheet, PDF (2/3 Pages) Unisonic Technologies – MELODY INTEGRATED CIRCUIT

UTC UM66TXXL
CMOS IC
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=1.5V,O/P=0.8V
400 600
µA
O/P Sink Current
Io/p
Vdd=1.5V O/P=0.5V open 350 450
µA
Frequency Deviation
∆F/F
Vdd=1.5V
-12 %
Deviation Per Lot
Frequency Stability
∆F/F
Fosc(1.6V) − Fosc(1.5V)
10
%
Fosc(1.5V)
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 UNISONIC TECHNOLOGIES CO., LTD. ²
QW-R501-001,D