pcf1178c NXP Semiconductors, pcf1178c Datasheet - Page 2

• Manufacturer Part Number: pcf1178c
• Description: 4-digit Duplex Lcd Car Clock
• Manufacturer: NXP 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
PCF1178CT
PCF1178CU
PCF1178CU/10
PCF1178CU/5
TYPE NUMBER
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.
4-digit duplex LCD car clock
NAME
SO28
plastic small outline package; 28 leads; body width 7.5 mm
uncased chip in tray
chip-on-film frame carrier (FFC)
unsawn wafer
(2)
(2)
2
DESCRIPTION
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.
PACKAGE
(2)
(1)
Product specification
PCF1178C
SOT136-1
VERSION