SNC21040A

1-CH H.Q. Speech Controller

Ver1.1

April 28, 2009

9

8. APPLICATION CIRCUIT

8.1 General application

CGND

CGND

CGND

CGND

+

-

GNDIO

GNDIO

GNDIO

GNDIO

OSC

OSC

OSC

OSC

RST

RST

RST

RST

C

C

C

C1

11

1

104

104

104

104

VDDIO

VDDIO

VDDIO

VDDIO

CVDD

CVDD

CVDD

CVDD

Battery

Box

IO3

IO4

IO5

IO1

IO2

R

R

R

R1

11

1

22

22

22

220

00

0K

K

K

K

It is suggested to add a capacitor (C1), 104, between VDD with GND to keep

power stable with general application. And this capacitor is strongly

suggested to be as close to the chip as possible.