PCF1174CT Philips Semiconductors, PCF1174CT Datasheet - Page 2

• Manufacturer Part Number: PCF1174CT
• Description: 4-digit static LCD car clock
• Manufacturer: Philips Semiconductors

Philips Semiconductors
FEATURES
ORDERING INFORMATION
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.
1997 Apr 16
PCF1174CT
PCF1174CU
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).
4-digit static LCD car clock
NUMBER
TYPE
VSO40
NAME
plastic very small outline package; 40 leads; face down
uncased chip in tray
(2)
DESCRIPTION
2
GENERAL DESCRIPTION
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.
PACKAGE
(1)
Product specification
PCF1174C
SOT158-2
VERSION