15600_15 Datasheet, PDF (2/6 Pages) Unisonic Technologies – MELODY IC

15600
 MARKING
DIP-8
SOP-8
CMOS IC
 PIN CONFIGURATION
OSC1 1
OSC2 ₂
V_{SS 3}
TEST ₄
8 OUT
7 VDD
6 SEL
5 MT
 PIN DESCRIPTION
PIN NO
1
PIN NAME
OSC1
2
OSC2
3
V_SS
4
TEST
5
MT
6
SEL
7
V_DD
8
OUT
I/O
I/NC
O
I
I
I
O
DESCRIPTION
1. When the external clock mode is selected by mask option:
Enter square waves of 32.768kHz or 47.520kHz to the OSC1 pin
as the reference signal source.
2. When the integrated RC oscillation is selected by mask option:
When using an external ”R”, insert a resistor between the OSC1
and OSC2 to adjust the oscillation frequency by the resistance of
the resistor.
When using integrated RC, keep the OSC1 and OSC2 open.
Negative supply pin or grounding pin
Integrated pull down.
when TEST is “high” and MT pin is “high, the device goes into test
mode .when IC goes into working, test should be tied to V_SS.
Integrated pull down .
When “high” level is input, the device goes into working mode to control
starting and stopping of the performance in accordance with the
performance method being designated by the mask option, and that the
device has the debnounce circuitry inside, it is of no effect that the
pulse is short of 32ms or 47ms.
Integrated pull down.
Melody 1 and melody 2 can be selected in the binary code by entering
“0”or “1” into this pin.
“Changing the melody midway during performance –not possible or
possible” is selected by mask option.
Power supply
With the audio signals, the key melody and accompaniment,
respectively, are attenuated under a certain time constant and
respective output s of the key melody and accompaniment are mixed by
the mixing resistor before being output.
This pin should therefore be connected to input pin of a pre-amp via a
variable resistor for volume control , coupling-capacitor, etc
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
2 of 6
QW-R502-085.C