PCF1175CT/F2,112

时钟驱动器及分配 4 DIG DUPLX LCD CLCK

Overview

The PCF1175C 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.

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## 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.

## Target Applications

* Car radio

* Car audio systems.

## Features