1997 Dec 12

2

Philips Semiconductors

Product specification

32 kHz watch circuits with EEPROM

PCA16xx series

FEATURES

• 32 kHz oscillator, amplitude regulated with excellent

frequency stability

• High immunity of the oscillator to leakage currents

• Time calibration electrically programmable and

reprogrammable (via EEPROM)

• A quartz crystal is the only external component required

• Very low current consumption; typically 170 nA

• Detector for silver-oxide or lithium battery voltage levels

• Indication for battery end-of-life

• Stop function for accurate timing

• Power-on reset for fast testing

• Various test modes for testing the mechanical parts of

the watch and the IC.

GENERAL DESCRIPTION

The PCA16xx series devices are CMOS integrated circuits

specially suited for battery-operated,

quartz-crystal-controlled wrist-watches, with bipolar

stepping motors.

ORDERING INFORMATION

Note

1. Figure 1 and Chapter “Package outline” show details of standard package, available for specified devices and for

large orders only.

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

TYPE

NUMBER

NAME

DESCRIPTION

VERSION

PCA1601U/10

−

chip on foil

−

PCA1602T

PMFP8

plastic micro flat package; 8 leads (straight)

SOT144-1

PCA1603U/7

−

chip with bumps on tape

−

PCA1604U

−

chip in tray

−

PCA1604U/10

−

chip on foil

−

PCA1605U/7

−

chip with bumps on tape

−

PCA1606U/10

−

chip on foil

−

PCA1607U

−

chip in tray

−

PCA1608U

−

chip in tray

−

PCA1611U

−

chip in tray

−

PCA1621U/7

−

chip with bumps on tape

−

PCA1621U/10

−

chip on foil

−

PCA1622U

−

chip in tray

−

PCA1623U/7

−

chip with bumps on tape

−

PCA1624U

−

chip in tray

−

PCA1625U/7

−

chip with bumps on tape

−

PCA1626U

−

chip in tray

−

PCA1627U/7

−

chip with bumps on tape

−

PCA1628U

−

chip in tray

−

PCA1629U/7

−

chip with bumps on tape

−