15600

CMOS IC

UNISONICTECHNOLOGIESCO.,LTD

2 of 6

www.unisonic.com.tw

QW-R502-085.C



MARKING

DIP-8

SOP-8



PIN CONFIGURATION

1

OSC1

OSC2

TEST

OUT

SEL

MT

2

3

4

5

6

7

8



PIN DESCRIPTION

PIN NO

PIN NAME

I/O

DESCRIPTION

1

OSC1

I/NC

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.

2

OSC2

O

3

Negative supply pin or grounding pin

4

TEST

I

Integrated pull down.

when TEST is “high” and MT pin is “high, the device goes into test

5

MT

I

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.

6

SEL

I

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.

7

Power supply

8

OUT

O

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