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TECHNICAL DATA

Liquid Crystal Display Controller

The

KK472

Liquid Crystal Display (LDC) Controller is a perpheral

member of the COPS

TM

family, fabricated using CMOS technology. The

KK472

drives a multiplexed liquid crystal directly. Data is loaded serially

and is held in internal latches. The

KK472

contains an on-chip oscillator and

generates all the multi-level waveforms for back-planes and segment

outputs on a triplex display. One

KK472

can drive 36 segments multiplexed

as 3 x 12 (4

1

/

2

digit display). Two

KK472

devices can be used together to

drive 72 segments (3 x 24) which could be an 8

1

/

2

digit display.

鈥?/div>

Direct interface to TRIPLEX LCD

Low power dissipation (100

碌W

typ.)

Low cost

Compatible with all COP400 processors

Needs no refresh from processor

On-chip oscillator and latches

Expandable to longer displays

Software compatible with COP470 V.F.Display Driver Chip

Operates from display voltage

MICROWIRE

TM

compatible serial I/O

20-pin Dual-In-Line package

KK472

ORDERING INFORMATION

KK472N

Plastic

KK472DW

SOIC

T

A

= 0擄 to 70擄 C for all packages

PIN ASSIGNMENT

Pin Description

CS

V

DD

GND

DI

SK

BP

A

BP

B

BP

C

SA1鈭糞A4

Chip select

Power supply (display voltage)

Ground

Serial data input

Serial clock input

Display backplane A (or oscillator in)

Display backplane B

Display backplane C (or oscillator out)

12 multiplexed outputs

Description

1

型號(hào)

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描述

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KK472

英文版

Liquid Crystal Display Controller

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KK472
KK472

英文版

Liquid Crystal Display Controller

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KK472

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