NIPPON PRECISION CIRCUITS INC.

NIPPON PRECISION CIRCUITS-1

OVERVIEW

CF5732 Series

Analog clock CMOS IC

The CF5732 series are analog clock driver ICs using

32kHz reference frequency of crystal oscillator. Some

versions in accordance with the combinations of each

motor drive and alarm output characteristics can provide

a wide range of applications for various clock specifica-

tions.

The CF5732 series incorporates 4 types of pace adjust-

ment capacitors, which enables to adjust the pace with

bonding options.

FEATURES

- Built-in oscillator circuits(32.678 kHz)

On-chip feed back resistors (Rf, Rd)

Additional 4 capacitors for pace adjustment.

- Debounce circuit (AI terminal)

- Single 1.5 V supply

- Available as a die

SERIES LINEUP

CF5732EA

CF5732FA

CF5732GA

CF5732HA

CF5732JA

CF5732KA

Built-in

11.5

11.5

10

11.5

11.5

11.5

Capacitor

29

29

25

29

29

29

C1(pF)

6

6

3666

C2(pF)

7

7

4777

C4(pF)

8

8

5888

C4(pF)

9

9

6999

Motor

Active Level

-

H

L

H

H

H

Output

Hand Drive Cycle(sec)

0.125

1

1111

Pulse Width(msec)

DUTY50%

31.25

31.25

15.6

23.4375

46.875

Alarm

Active Level

L

L

LLLL

Input

Test Function

Alarm

Terminal

AO

AO

AO

AO

AO

AO

AO

AO

AO

AO

AO

AO

Output

Active Level

H

L(*1)

H

L(*2)

H

L(*1)

H

L(*2)

H

L(*2)

H

L(*2)

Fundmental Frequency(Hz)

2048

2048

2048

2048

2048

2048

2048

2048

2048

2048

2048

2048

Modulation Frequency(Hz)

8

+1

8

+1

8

+1

8

+1

8

+1

8

+1

16

+116+18+18+18+18+1

−1.0

−1.0

−1.0

−1.0

−1.0

−1.0

1.0

1.0

1.0

1.0

1.0

1.0

(*1) AO is the reverse phase of AO, when output is active. (the same phase, when output is inactive)

(*2) AO is complete reverse phase of AO. (even output is inactive.)