IC LCD DISPLAY DRIVER 20-SOIC

COP472WM-3/NOPB

Manufacturer Part NumberCOP472WM-3/NOPB
DescriptionIC LCD DISPLAY DRIVER 20-SOIC
ManufacturerNational Semiconductor
COP472WM-3/NOPB datasheet
 


Specifications of COP472WM-3/NOPB

Display TypeLCDConfiguration36 Segment
InterfaceSerialDigits Or Characters4.5 Digits
Current - Supply250µAVoltage - Supply3 V ~ 5.5 V
Operating Temperature0°C ~ 70°CMounting TypeSurface Mount
Package / Case20-SOIC (7.5mm Width)Operating Supply Voltage (typ)3.3/5V
Number Of Digits4.5Number Of Segments36
Operating Temperature (min)0COperating Temperature (max)70C
Operating Temperature ClassificationCommercialPackage TypeSOIC W
Pin Count20MountingSurface Mount
Frequency (max)250KHzOperating Supply Voltage (min)3V
Operating Supply Voltage (max)5.5VNo. Of Digits / Alpha4-1/2
No. Of Segments36Meter Display TypeLCD
Interface TypeTriplexedSupply Voltage Range3V To 5.5V
Driver Case StyleSOICNo. Of Pins20
Rohs CompliantYesLead Free Status / RoHS StatusLead free / RoHS Compliant
Other namesCOP472WM-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

COP472WM-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 ...

  • 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

    ... Floor Straight Block a Ocean Centre 5 Canton Rd 49 (0) 180-530 85 85 Tsimshatsui Kowloon a Tel 49 (0) 180-532 78 32 Hong Kong a 49 (0) 180-532 93 58 Tel (852) 2737-1600 a Tel 49 (0) 180-534 16 80 Fax (852) 2736-9960 a National Semiconductor Japan Ltd Tel 81-043-299-2308 Fax 81-043-299-2408 ...