COP472N-3/NOPB

Manufacturer Part NumberCOP472N-3/NOPB
DescriptionIC LCD DISPLAY DRIVER 20-DIP
ManufacturerNational Semiconductor
COP472N-3/NOPB datasheet
 


Specifications of COP472N-3/NOPB

Display TypeLCDConfiguration36 Segment
InterfaceSerialDigits Or Characters4.5 Digits
Current - Supply250µAVoltage - Supply3 V ~ 5.5 V
Operating Temperature0°C ~ 70°CMounting TypeThrough Hole
Package / Case20-DIP (0.300", 7.62mm)Lead Free Status / RoHS StatusLead free / RoHS Compliant
Other namesCOP472N-3  
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COP472-3 Liquid Crystal Display Controller
General Description
The COP472–3 Liquid Crystal Display (LCD) Controller is a
peripheral member of the COPS
TM
family fabricated using
CMOS technology The COP472-3 drives a multiplexed liq-
uid crystal display directly Data is loaded serially and is held
in internal latches The COP472-3 contains an on-chip oscil-
lator and generates all the multi-level waveforms for back-
planes and segment outputs on a triplex display One
COP472-3 can drive 36 segments multiplexed as 3 x 12
(4
digit display) Two COP472-3 devices can be used to-
gether to drive 72 segments (3 x 24) which could be an 8
digit display
Block Diagram
COPS
TM
and MICROWIRE
TM
are trademarks of National Semiconductor Corporation
C 1996 National Semiconductor Corporation
TL DD 6932
Features
Direct interface to TRIPLEX LCD
Y
Low power dissipation (100 W typ )
Y
Low cost
Y
Compatible with all COPS processors
Y
Needs no refresh from processor
Y
On-chip oscillator and latches
Y
Expandable to longer displays
Y
Operates from display voltage
Y
MICROWIRE
compatible serial I O
TM
Y
20-pin Dual-In-Line package and 20-pin SO
Y
http
RRD-B30M56 Printed in U S A
July 1995
TL DD 6932 – 1
www national com

COP472N-3/NOPB Summary of contents

  • Page 1

    ... Two COP472-3 devices can be used to- gether to drive 72 segments (3 x 24) which could digit display Block Diagram COPS TM and MICROWIRE TM are trademarks of National Semiconductor Corporation C 1996 National Semiconductor Corporation TL DD 6932 Features Direct interface to TRIPLEX LCD Y Low power dissipation (100 W typ ) Y ...

  • Page 2

    Absolute Maximum Ratings Voltage pins Voltage at all other Pins b Operating Temperature Range DC Electrical Characteristics GND Parameter Power Supply Voltage V ...

  • Page 3

    ... Absolute Maximum Ratings If Military Aerospace specified devices are required please contact the National Semiconductor Sales Office Distributors for availability and specifications Voltage Pins b Voltage at All Other Pins Operating Temperature Range b DC Electrical Characteristics GND Parameter Power Supply Voltage V DD Power Supply Current I ...

  • Page 4

    ... Dual-In-Line Package Top View Order Number COP472MW-3 or COP472N-3 See NS Package Number M20A or N20A FIGURE 4 Backplane and Segment Waveforms FIGURE 5 Typical Display Internal Connections http www national com Pin CS Chip select V Power supply (display voltage) DD GND Ground DI Serial data input SK Serial clock input ...

  • Page 5

    Functional Description The COP472-3 drives 36 bits of display information orga- nized as twelve segments and three backplanes The COP472-3 requires 40 information bits 36 data and 4 con- trol The function of each control bit is described below Display ...

  • Page 6

    LOADING SEQUENCE TO DRIVE A 4 -DIGIT DISPLAY Steps 1 Turn CE low 2 Clock in 8 bits of data for digit 1 3 Clock in 8 bits of data for digit 2 4 Clock in 8 bits of data ...

  • Page 7

    Physical Dimensions inches (millimeters) unless otherwise noted 20-Lead Molded DIP (M) Order Number COP472MW-3 NS Package Number M20B 7 http www national com ...

  • Page 8

    ... National does not assume any responsibility for use of any circuitry described no circuit patent licenses are implied and National reserves the right at any time without notice to change said circuitry and specifications 20-Lead Molded DIP (N) Order Number COP472N-3 NS Package Number N20A 2 A critical component is any component of a life ...