COP472WM-3 National Semiconductor, COP472WM-3 Datasheet

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COP472WM-3

Manufacturer Part Number
COP472WM-3
Description
IC, LCD CONTROLLER, 36SEG, 5.5V, SOIC-20
Manufacturer
National Semiconductor
Datasheet

Specifications of COP472WM-3

Supply Current
250µA
No. Of Digits / Alpha
4.5
No. Of Segments
36
Meter Display Type
LCD
Interface Type
Triplexed
Supply Voltage Range
3V To 5.5V
Driver Case Style
SOIC
No. Of Pins
20
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
COP472WM-3
Manufacturer:
NS/国半
Quantity:
20 000
Part Number:
COP472WM-3/NOPB
Manufacturer:
NS
Quantity:
10 359
C 1996 National Semiconductor Corporation
COP472-3 Liquid Crystal Display Controller
General Description
The COP472–3 Liquid Crystal Display (LCD) Controller is a
peripheral member of the COPS
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
gether to drive 72 segments (3 x 24) which could be an 8
digit display
Block Diagram
COPS
TM
digit display) Two COP472-3 devices can be used to-
and MICROWIRE
TM
are trademarks of National Semiconductor Corporation
TL DD 6932
TM
family fabricated using
Features
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Direct interface to TRIPLEX LCD
Low power dissipation (100 W typ )
Low cost
Compatible with all COPS processors
Needs no refresh from processor
On-chip oscillator and latches
Expandable to longer displays
Operates from display voltage
MICROWIRE
20-pin Dual-In-Line package and 20-pin SO
RRD-B30M56 Printed in U S A
TM
compatible serial I O
http
www national com
TL DD 6932 – 1
July 1995

Related parts for COP472WM-3

COP472WM-3 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 ...

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