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Industrial Electronic Engineers, Inc.

SIZE

A

CODE IDENT NO.

05464

SLB324-X4X

I

Van Nuys, California

SCALE     N/A

REV    

D

SHEET    3

10/10/03

1.0

GENERAL DESCRIPTION

1.1

Introduction

This specification describes the interface requirements and features of a 2 line Liquid Crystal Display (LCD) ,
15 characters wide.  The characters are formed using a 8x18 dot matrix.

1.2

Application

This unit may be used as a console display which provides alphanumeric information that is easily readable in
high ambient light or with the backlight in low light conditions.  It is ideal for point-of-sale terminals, office
computers, and a wide range of business and industrial equipment.

1.3

Special Features

Thai character set

Wide operating temperatures (-20 to +70

°

)

Power and data on same connector

EIA-232C data interface

12-29 Volt Operation

EIA-422A data interface

Low cost

Software self test

Shielded I/O Connector standard

Minimum depth

4 canned messages, 500 bytes each

1.4

Description

This LCD is a self-contained multiplexed unit which provides a simple interface to a microprocessor system.

The display is available with one I/O connector and a choice of either EIA-232C or EIA-422A interfacing.

EIA-232C  = Model LB324-04X

I

EIA-422A  = Model LB324-14X

I

This unit consists of a liquid crystal display cell and a minimal amount of electronic hardware.  All display
characters and control codes can be accessed in a 8-bit format. Primary complexity is contained within the
microprocessor software, which controls all display functions.

A single 12-29 volt power supply is required for operation.  At +12VDC, total power is approximately .72 watts
and current is about 60mA.

Data is entered serially at 9600 Baud at rates determined by execution times.

The large characters are easily readable, even in direct sunlight and provide comfortable short or long-term
viewing.

Figures 3, 4, and 5 depict the character sets used in this module.

Summary of Contents for SLB324-14XI

Page 1: ...11 12 13 14 15 16 17 18 19 20 21 22 23 24 REVISION STATUS PROJ NO 368 CONTRACT INDUSTRIAL ELECTRONIC ENGINEERS INC VAN NUYS CALIFORNIA DRAWN R January LIQUID CRYSTAL DISPLAY CHECK D Summers 8 18 97 S...

Page 2: ...4 0 OPERATION 4 1 Loading ASCII Character Data 4 2 Control Codes 4 3 Character Chart 4 4 Overlay Character Codes 4 5 User Defined Characters 4 6 Dedicated Hardware Lines 4 7 Serial Data and Self test...

Page 3: ...ftware self test Shielded I O Connector standard Minimum depth 4 canned messages 500 bytes each 1 4 Description This LCD is a self contained multiplexed unit which provides a simple interface to a mic...

Page 4: ...4 10 10 03 2 0 BLOCK DIAGRAM LEVEL CONVERTERS LCD CELL ROW DRIVER SHIFT REGISTER SHIFT REGISTER DEDICATED ON BOARD MICROPROCESSOR CONTROLLER ON BOARD DC TO DC VOLTAGE CONVERTER FOR LIQUID CRYSTAL DIS...

Page 5: ...cell to the viewer This display consists of two display areas each comprising a matrix of 18 x 120 dots to display four lines of characters A matrix addressing technique provides individual control o...

Page 6: ...8 x 18 DOT CHARACTERS FOR 5 x 8 DOT CHARACTERS 01 0F HEX FOR LINE 1 01 14 HEX FOR LINE 1 21 2F HEX FOR LINE 2 21 34 HEX FOR LINE 2 41 54 HEX FOR LINE 3 61 74 HEX FOR LINE 4 04 READ DATA AT PRESENT CU...

Page 7: ...lled 12 OVERWRITE OF RIGHT MOST CHARACTER ON THE PRESENT LINE AUTOMATIC CARRIAGE RETURN OFF 13 HORIZONTAL SCROLL MODE from right to left on bottom line only after line has been filled 14 RESET goes to...

Page 8: ...05H SWEDEN N 06H ITALY N 07H SPAIN N 08H JAPAN N 09H NORWAY N 0AH DENMARK 2 1B 74 N SELECT CHARACTER SET change character set will set cursor home N 01 ASCII AND GENERAL EUROPEAN 5x8 DOT N 02 THAI 8x...

Page 9: ...ont d DATA HEX DESCRIPTION 1F 40 EXECUTE SELF TEST Use 1B 40 to terminate self test 1F 45 T SET ALL DISPLAY BLINK FIELDS AT INTERVAL T Tx50msec 50 DUTY CYCLE Tmax 3F HEX 20 to 7F MAIN CHARACTER SET 80...

Page 10: ...a SCALE N A REV D SHEET 10 10 10 03 4 3 Character Set Charts 4 3 1 8 x 18 Dot Matrix Characters The LB324 X41I offer s a Thai character set in a 8x18 dot matrix font it displays 2 rows of 15 character...

Page 11: ...CODE IDENT NO 05464 SLB324 X4XI Van Nuys California SCALE N A REV D SHEET 11 10 10 03 4 3 1 8 x 18 Dot Matrix Characters Cont d Thai vowel 80 98 D1 D4 D9 E7 and tone E8 EC should follow Thai consonan...

Page 12: ...ndustrial Electronic Engineers Inc SIZE A CODE IDENT NO 05464 SLB324 X4XI Van Nuys California SCALE N A REV D SHEET 12 10 10 03 4 3 2 5 x 8 Dot Matrix Characters FIGURE 5 5 x 8 U S ASCII CHARACTER SET...

Page 13: ...Industrial Electronic Engineers Inc SIZE A CODE IDENT NO 05464 SLB324 X4XI Van Nuys California SCALE N A REV D SHEET 13 10 10 03 4 4 Overlay Character Codes...

Page 14: ...cter dot data Repeat bytes 6 10 for the number of characters to be downloaded CHARACTER DOT DATA BYTE 7 6 5 4 3 2 1 0 6 7 8 9 10 36 31 26 21 16 11 6 1 37 32 27 22 17 12 7 2 38 33 28 23 18 13 8 3 39 34...

Page 15: ...tivated by sending 1F 40 HEX The test may be terminated by sending 1B 40 HEX Characters from 20 HEX to FB HEX will be displayed advancing through the characters at approximately 2 0 characters per sec...

Page 16: ...r connectors should be connected disconnected while power is applied Because of the power up cycle within the microprocessor rise time of the power supply should be less than 100mS The display module...

Page 17: ...display has built in temperature compensation circuitry and therefore should not require readjustment of the contrast once it is set at the factory Potentiometer R4 when used is adjusted to obtain 10...

Page 18: ...ectronic Engineers Inc SIZE A CODE IDENT NO 05464 SLB324 X4XI Van Nuys California SCALE N A REV D SHEET 18 10 10 03 10 0 OUTLINE AND INSTALLATION DRAWING FIGURE 6 TOLERANCE XX 03 0 8 XXX 010 0 25 Dim...

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