PCF1178CT View Datasheet(PDF) - Philips Electronics

Part Name

Description

Manufacturer

PCF1178CT

4-digit duplex LCD car clock

Philips Electronics 

Philips Semiconductors

4-digit duplex LCD car clock

Product specification

PCF1178C

FEATURES

• Internal voltage regulator is electrically programmable

for various LCD voltages

• Time calibration is electrically programmable

(no trimming capacitor required)

• LCD voltage adjusts with temperature for good contrast

• 4.19 MHz oscillator

• 12-hour or 24-hour mode

• Operating ambient temperature: −40 to +85 °C

• 28-lead plastic SMD (SO28)

• 1 Hz set mode.

GENERAL DESCRIPTION

The PCF1178C is a single chip, 4.19 MHz CMOS car clock

circuit providing hours, minutes and seconds functions.

It is designed to drive a 4-digit duplex liquid crystal display

(LCD).

Two external single-pole, single-throw switches will

accomplish all time setting functions. Time calibration and

voltage regulator are electrically programmable via an

on-chip EEPROM. The circuit is battery-operated via an

internal voltage regulator and an external resistor.

ORDERING INFORMATION

TYPE NUMBER

PCF1178CT

PCF1178CU

PCF1178CU/10

PCF1178CU/5

NAME

SO28

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PACKAGE

DESCRIPTION

plastic small outline package; 28 leads; body width 7.5 mm(1)

uncased chip in tray(2)

chip-on-film frame carrier (FFC)(2)

unsawn wafer(2)

Notes

1. See Fig.1 and Chapter “Package outline” for pin layout and package details.

2. See Chapter “Chip dimensions and bonding pad locations” for pad layout and package details.

VERSION

SOT136-1

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1997 Apr 16

2

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