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參數資料
| 型號： | 935182630005 |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 時鐘及定時 |
| 英文描述： | LCD CLOCK, UUC28 |
| 封裝： | DIE-28 |
| 文件頁數： | 12/22頁 |
| 文件大小： | 153K |
| 代理商： | 935182630005 |
1997 Apr 16
2
Philips Semiconductors
Product specication
4-digit duplex LCD car clock
PCF1178C
FEATURES
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.
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.
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.
TYPE NUMBER
PACKAGE
NAME
DESCRIPTION
VERSION
PCF1178CT
SO28
plastic small outline package; 28 leads; body width 7.5 mm(1)
SOT136-1
PCF1178CU
uncased chip in tray(2)
PCF1178CU/10
chip-on-lm frame carrier (FFC)(2)
PCF1178CU/5
unsawn wafer(2)
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