PCF1179CT NXP Semiconductors, PCF1179CT Datasheet - Page 2

• Manufacturer Part Number: PCF1179CT
• Manufacturer: NXP Semiconductors

Specifications of PCF1179CT

• Operating Supply Voltage (typ): 3.3/5V
• Number Of Digits: 4
• Number Of Segments: 30
• Operating Temperature (min): -40C
• Operating Temperature (max): 85C
• Operating Temperature Classification: Industrial
• Package Type: SO
• Pin Count: 28
• Mounting: Surface Mount
• Operating Supply Voltage (min): 3V
• Operating Supply Voltage (max): 6V
• Lead Free Status / Rohs Status: Compliant

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
PCF1179CT
PCF1179CU
PCF1179CU/10
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)
4 Hz set mode.
4-digit duplex LCD car clock
NUMBER
TYPE
NAME
SO28
plastic small outline package; 28 leads; body width 7.5 mm
uncased chip in tray
chip-on-film frame carrier (FFC)
(2)
2
DESCRIPTION
GENERAL DESCRIPTION
The PCF1179C 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
PCF1179C
SOT136-1
VERSION