1998 Apr 21

16

Philips Semiconductors

Product specification

32 kHz watch circuits with adaptive motor

pulse

PCA148x series

APPLICATION INFORMATION

Fig.11 Typical application circuit diagram.

0.5 pF or larger than 20 M

Ω.

Driving the motor at its minimum energy, probe and stray capacitance must be avoided.

MSA967

VDD

M1

M2

RESET

VSS

TEST

OSC IN

OSC OUT

C M

(2)

C M

(2)

M

(1)

1.55 V

PCA148x

SERIES

1

2

3

4

8

7

6

5