SNC725

16-bit Voice Processor

Ver:1.2

October 23, 2002

13

I/O and VDD 4.5V, CVDD 3V, 16MHz ROSC, DA output

Note:

1. All the ”VDD” should be connected together before connected to the power source

which with a 47uF(C4) capacitor.

2. The capacitor “C5” is near the “CVDD” pin.

VCC

R1

220K

C1

0.1u

LS1

SPEAKER

C4

47u

TR5

TR6

TR7

TR8

TR1

TR2

TR3

TR4

C5

4.7u

C6

0.1u

BT1

BATTERY

BT2

BATTERY

3V

4.5V

Y1

32768

C7

15p

C8 15p

VR1

75K

VR2

100K

Q1

8050

R7

R

VDD

2

3

4

7

8

9

10

11

13

14

16

12

17

18

19

20

21

22

23

26

27

28

29

30

31

32

33

34

35

36

38

39

40

41

6

25

42

43

45

46

U1

SNC725

VDD

VDD

VDD

VDD

CVDD

CVDD

RST

BP0

BN0

VO

XIN

XOUT

LXIN

LXOUT

P0.0

P0.1

P0.2

P0.3

P0.4

P0.5

P0.6

P0.7

P0.8

P0.9

P0.10

P0.11

P0.12

P0.13

P0.14

P0.15

P1.0

P1.1

P1.2

P1.3

P1.4

P1.5

P1.6

P1.7

CKSEL

TEST