TLDD6932COP472 Datasheet, PDF (1/8 Pages) National Semiconductor (TI) – COP472-3 Liquid Crystal Display Controller

July 1995
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
Features
Y _{Direct interface to TRIPLEX LCD}
Y _{Low power dissipation (100 mW 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 _MICROWIRETM _{compatible serial I O}
Y _{20-pin Dual-In-Line package and 20-pin SO}
Block Diagram
COPSTM and MICROWIRETM are trademarks of National Semiconductor Corporation
C1996 National Semiconductor Corporation TL DD 6932
TL DD 6932 – 1
RRD-B30M56 Printed in U S A
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