4

* This specification are subject to be changed without notice.

EM57000 SERIES

TINY CONTROLLER-BASED

SOUND PROCESSOR

3.19.2002

EASY SOUND -

APPLICATION CIRCUIT FOR EM57100 AND ABOVE

In the following application circuits:

*1 : For heavy loading application, adding an electrolytic capacitor between Vcc and Ground is recommanded.

The recommanded value for button cell application is 10µF.

*2 : The recommanded value for button cell application is 750½ or less.

P1.0

P1.1

P1.2

P1.3

VDD

OSC

TEST

VSS

P2.0

P2.1

P2.2

P2.3

P3.0

P3.1

P3.2

P3.3

VO

1

2

3

4

13

14

16

15

5

6

7

8

9

10

11

12

17

VCC

VCC

NPN

U1

TR1

TR2

TR3

TR4

TR5

TR6

TR7

TR8

TR9

TR10

TR11

TR12

TR13

TR14

TR15

TR16

*1

Rb

*2

16-key Application Circuit

P1.0

P1.1

P1.2

P1.3

VDD

OSC

TEST

VSS

P2.0

P2.1

P2.2

P2.3

P3.0

P3.1

P3.2

P3.3

VO

1

2

3

4

13

14

16

15

5

6

7

8

9

10

11

12

17

VCC

VCC

VCC

NPN

U1

TR1

TR2

TR3

TR4

*1

Rb

*2

4-key Application Circuit