GENERAL DESCRIPTION
The PCF1172C is a single chip, 4.19 MHz CMOS clock circuit indicating hours and minutes. It is designed to drive a 31⁄2-digit liquid crystal display (LCD) with AM and PM indicators.

FEATURES
• Driving standard 31⁄2-digit LCD with AM and PM indicators
• Internal voltage regulator for 5 V LCD
• Option for external stabilized voltage supply
• 4.19 MHz oscillator
• Integrated oscillator output capacitor and polarization resistor
• Operating ambient temperature: −40 to +85 °C
• 40-lead plastic SMD, face down (VSO40).