PCF1174C
Overview
- 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
- 40-lead plastic SMD, face down (VSO40). ORDERING INFORMATION TYPE NUMBER PCF1174CT PCF1174CU Notes
- See Fig.1 and Chapter “Package outline” for pin layout and package details.
- See Chapter “Chip dimensions and bonding pad locations” for pad layout and package details. PACKAGE NAME VSO40 - uncased chip in tray(2) DESCRIPTION plastic very small outline package; 40 leads; face down(1) GENERAL DESCRIPTION PCF1174C The PCF1174C 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 static 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.
