National Semiconductor COP472-3 LCD Display Controller Data Sheet & Manual
Summary
The COP472-3 is a specialized CMOS LCD Controller designed to drive multiplexed, triplex Liquid Crystal Displays directly into electronic systems. This manual provides comprehensive technical details, including electrical characteristics, absolute maximum ratings, and precise timing specifications for engineers integrating sophisticated displays. It is essential documentation for hardware designers requiring high-reliability, low-power liquid crystal display peripheral solutions compatible with COPS processors.
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查询COP472-3供应商
-3 iq id ry ta is la tro lle COP472-3 Liquid Crystal Display Controller General Description Features
The COP472–3 Liquid Crystal Display (LCD) Controller is Direct interface to TRIPLEX LCD
peripheral member of the COPSTM family, fabricated using Low power dissipation (100 m W typ.) CMOS technology. The COP472-3 drives multiplexed liq- Low cost uid crystal display directly. Data is loaded serially and is held Compatible with all COPS processors in internal latches. The COP472-3 contains an on-chip oscil-
Needs no refresh from processor
lator and generates all the multi-level waveforms for back-
On-chip oscillator and latches
planes and segment outputs on triplex display. One
Expandable to longer displays
COP472-3 can drive segments multiplexed as
Operates from display voltage
(4(/2 digit display). Two COP472-3 devices can be used to-
gether to drive segments (3 24) which could be an 8(/2 MICROWIRETM compatible serial I/O digit display. 20-pin Dual-In-Line package and 20-pin SO
Block Diagram
TL/DD/6932–1
COPSTM and MICROWIRETM are trademarks of National Semiconductor Corporation.
C1996 National Semiconductor Corporation TL/DD/6932 RRD-B30M56/Printed in U. S. A. http://www.national.com
Page Summary Contents For National Semiconductor COP472-3 LCD Display Controller Data Sheet & Manual
Manual Details
| Brand | National |
|---|---|
| Pages | 8 |
| File Size | 144.66 KB |
| Published | June 05, 2026 |
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Frequently Asked Questions
What is the maximum display capacity using two units?
Two COP472-3 devices can drive up to 72 segments, configured as a 3x24 display.
What voltage range is required for operation?
The device operates with a power supply voltage (Vcc) between 3.0 Volts and 5.5 Volts.
Does the controller require an external clock or oscillator?
No, it contains an on-chip oscillator and generates all necessary multi-level waveforms for backplane and segment outputs.
What input interface does it use for data loading?
It accepts serial data loaded via compatible MICROWIRE serial I/O, utilizing CS (Chip Select), DI (Data Input), and SK (Serial Clock) pins.