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PHILIPS PCF1178C 4-digit Duplex LCD Car Clock User Manual and Data Sheet

Summary

Philips semiconductor discrete component datasheet. Documents maximum ratings (voltage, current, power dissipation), thermal characteristics, DC/AC electrical specifications, typical performance curves, S-parameters for RF applications, package mechanical drawings, marking codes, and ESD handling precautions in antistatic packaging.

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Page 1 Text Content

查询PCF1178C供应商

INTEGRATED CIRCUITS

DATA SHEET

PCF1178C 4-digit duplex LCD car clock

Product specification Apr

Supersedes data of September File under Integrated Circuits, IC16

Page Summary Contents For PHILIPS PCF1178C 4-digit Duplex LCD Car Clock User Manual and Data Sheet

Page 1 查询PCF1178C供应商 INTEGRATED CIRCUITS DATA SHEET PCF1178C 4-digit duplex LCD car clock Product specification Apr Supersedes data of September File under Integrated Circuits, IC16
Page 2 Philips Semiconductors Product specification 4-digit duplex LCD car clock PCF1178C FEATURES GENERAL DESCRIPTION Internal voltage regulator is electrically programmable The PCF1178C is a single chip, 4...
Page 3 Philips Semiconductors Product specification 4-digit duplex LCD car clock PCF1178C PINNING SYMBOL PIN DESCRIPTION BP1 backplane BP2 backplane AM/PM segment driver A2/ADEG1 segment driver B1/C1 segment...
Page 4 Philips Semiconductors Product specification 4-digit duplex LCD car clock PCF1178C FUNCTIONAL DESCRIPTION AND TESTING The average voltages across the segments are: 1. VON(RMS) 0.79 VDD Outputs 2. VOFF...
Page 5 Philips Semiconductors Product specification 4-digit duplex LCD car clock PCF1178C LCD voltage (see Fig.5) The adjustable voltage regulator controls the supply voltage (see Section “LCD voltage progra...
Page 6 Philips Semiconductors Product specification 4-digit duplex LCD car clock PCF1178C 12/24-hour mode Segment test/reset Operation in 12-hour or 24-hour mode is selected by When S1 and S2 are connected t...
Page 7 Philips Semiconductors Product specification 4-digit duplex LCD car clock PCF1178C The number (n) is stored in a non-volatile memory which is achieved by the following steps (see Fig.6): 1. Set SEL to...
Page 8 Philips Semiconductors Product specification 4-digit duplex LCD car clock PCF1178C 5 VVDD clears cells incrementing counters store pulse 5 VVDD t , t = 4 to 6 ms WE t = 1 to 1.5 µs L pulse generators ...
Page 9 Philips Semiconductors Product specification 4-digit duplex LCD car clock PCF1178C LIMITING VALUES In accordance with the Absolute Maximum Rating System (IEC 134). SYMBOL PARAMETER CONDITIONS MIN. MAX...
Page 10 Philips Semiconductors Product specification 4-digit duplex LCD car clock PCF1178C CHARACTERISTICS VDD to V; VSS V; Tamb −40 to +85 °C; crystal: f 4.194304 MHz; Rs Ω; CL p F; maximum frequency toleran...
Page 11 Philips Semiconductors Product specification 4-digit duplex LCD car clock PCF1178C CHIP DIMENSIONS AND BONDING PAD LOCATIONS G3/AD3 A2/ADEG1 B3/C3 AM/PM LE 4/ F4/E4 BP2 2/ G4/D4 BP1 PCF1178CU 2.92 mm ...
Page 12 Philips Semiconductors Product specification 4-digit duplex LCD car clock PCF1178C Table 2 Bonding pad locations (dimensions in µm) All x/y coordinates are referenced to the bottom left pad (VDD), see...
Page 13 Philips Semiconductors Product specification 4-digit duplex LCD car clock PCF1178C APPLICATION INFORMATION segment drivers BP2 DECODER to LCD DECODER PCF1178C AM/PM HOURS MINUTES SECONDS COUNTER COUNT...
Page 14 Philips Semiconductors Product specification 4-digit duplex LCD car clock PCF1178C PACKAGE OUTLINE SO28: plastic small outline package; 28 leads; body width 7.5 mm SOT136-1 pin 1 index detail X 10 mm ...
Page 15 Philips Semiconductors Product specification 4-digit duplex LCD car clock PCF1178C SOLDERING Wave soldering Introduction Wave soldering techniques can be used for all SO packages if the following cond...
Page 16 Philips Semiconductors Product specification 4-digit duplex LCD car clock PCF1178C DEFINITIONS Data sheet status Objective specification This data sheet contains target or goal specifications for prod...
Page 17 Philips Semiconductors Product specification 4-digit duplex LCD car clock PCF1178C NOTES
Page 18 Philips Semiconductors Product specification 4-digit duplex LCD car clock PCF1178C NOTES
Page 19 Philips Semiconductors Product specification 4-digit duplex LCD car clock PCF1178C NOTES
Page 20 Philips Semiconductors – a worldwide company Argentina: see South America Netherlands: Postbus 90050, 5600 PB EINDHOVEN, Bldg. VB, Tel. +31 82785, Fax. +31 Australia: 34 Waterloo Road, NORTH RYDE, NSW...

Manual Details

Brand Philips
Pages 20
File Size 120.87 KB
Published June 18, 2026
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Frequently Asked Questions

What is the operating temperature range for this device?

The product operates in a temperature range of −40 to +85 °C.

How are time calibration and oscillator voltage adjusted?

These functions are electrically programmable via an internal voltage regulator and external resistors.

Is trimming capacitor required for time setting?

No, the text states that "Time calibration is electrically programmable (LCD). (no trimming capacitor required)"

What signals adjust the 12-hour or 24-hour mode?

The MODE input pin and external switches S1/S2 select the operating mode.