PCA1673U 查看數據表（PDF） - Philips Electronics

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PCA1673U

32 kHz watch circuits using a silver-oxide or a 3 V lithium battery

Philips Electronics 

Philips Semiconductors

32 kHz watch circuits using a silver-oxide

or a 3 V lithium battery

Product specification

PCA167x series

FEATURES

• 32 kHz oscillator, amplitude regulated with excellent

frequency stability

• High immunity of the oscillator to leakage currents

• Very low current consumption; typically 150 nA

• Stop function for accurate timing

• Chopped motor pulses available

• Power-on reset for fast testing

• Various test modes for testing the mechanical parts of

the watch and the IC.

GENERAL DESCRIPTION

The PCA167x series devices are CMOS integrated circuits

specially suited for battery-operated,

quartz-crystal-controlled wrist-watches, with a bipolar

stepping motor.

ORDERING INFORMATION

TYPE

NUMBER

PCA1672U

PCA1673U

PCA1675U

PCA1676U/10

PCA1677U

NAME

−

−

−

−

−

chip in tray

chip in tray

chip in tray

chip on foil

chip in tray

PACKAGE(1)

DESCRIPTION

VERSION

−

−

−

−

−

Note

1. Figure 1 and Chapter “Package outline” show details of standard package, available for large orders only.

Chapter “Chip dimensions and bonding pad locations” shows exact pad locations for other delivery formats.

PINNING

SYMBOL

VSS

TEST

OSC IN

OSC OUT

VDD

M1

M2

RESET

PIN

DESCRIPTION

1 ground (0 V)

2 test output

3 oscillator input

4 oscillator output

5 positive supply voltage

6 motor 1 output

7 motor 2 output

8 reset input

VSS 1

8 RESET

TEST 2

7 M2

PCA167xT

OSC IN 3

6 M1

OSC OUT 4

5 VDD

MSA978

Fig.1 Pin configuration, PCA167xT, (PMFP8).

1998 Apr 03

2

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