15600

CMOS IC

UNISONICTECHNOLOGIESCO.,LTD

2 of 6

www.unisonic.com.tw

QW-R502-085.B

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 mode .when IC goes into working, test should be tied to

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