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Industrial Electronic Engineers, Inc.

SIZE

CODE IDENT NO.

05464

S03875–21–0214

Van Nuys, California

SCALE N/A

REV A

SHEET 6

preset the viewing angle. The LCD Controllers are microprocessor units (MPU) designed specifically to control
all multiplexing and character decoding functions for the LCD display.

LCD

Controller

LCD

Cell

Column Drivers

LCD

Controller

Column Drivers

Microprocessor

Temperature

Compensation

3
5
8
7

1
2

10
11

BIAS

Adj

Reset

Test

GND

+5V

Rtn

–
+

Serial

Receiver

+5V

View Angle

Adjust

Backlight

Option

FO Backlight

8” Flying Leads

Figure 1

Module Block Diagram

2.1.1

Signal Description

Signal Name

Number Of Lines

Input/Output

Connected

RESET

MPU

TEST

MPU

BIAS

Temp. Comp. Ckt.

BIAS

Adj.

Temp. Comp. Ckt.

Serial Receiver

RX Rtn

Serial Receiver

–

Power

GND

–

Содержание 03875-21-0214

Страница 1: ...12 13 14 15 16 17 18 19 20 21 22 23 24 REVISION STATUS PROJ NO 411 CONTRACT INDUSTRIAL ELECTRONIC ENGINEERS INC VAN NUYS CALIFORNIA DRAWN R January 3 19 93 SERIAL DATA INPUT CHECK 4 X 40 LCD MODULE WITH FIBER OPTIC BACKLIGHT NOTICE IS HEREBY GIVEN THAT THIS DRAWING IS PART OF A PROPRIETARY ITEM OWNED BY INDUSTRIAL APPROVED SIZE CODE IDENT NO ELECTRONIC ENGINEERS INC AND SHALL NOT BE REPRODUCED OR ...

Страница 2: ...AM CG RAM 9 2 2 8 Parallel Serial Data Conversion Circuitry Timing Generator Circuitry 9 3 0 THEORY OF OPERATION 9 3 1 Serial Interface 10 3 2 Error Detection and Reporting 10 3 3 Power up Sequence 11 3 4 Transmission Sequence for Instructions 11 3 5 Instruction Set 12 3 5 1 Instruction Summary 13 3 5 2 Sample Instructions In BASIC 13 3 6 Down Loadable Special Characters 14 3 7 Self test 16 3 8 Di...

Страница 3: ...E N A REV A SHEET 3 6 2 Non Operating 19 7 0 OPTICAL SPECIFICATIONS 19 7 1 Optical Characteristics 19 7 2 Viewing Angle Adjustment 21 8 0 FIBER OPTIC BACKLIGHT 22 8 1 FO Backlight Description 22 8 2 Lamp Characteristics 22 8 3 Standard Operation 23 9 0 INSTALLATION NOTE 23 10 0 ACCESSORIES 23 11 0 OUTLINE AND INSTALLATION CHARACTERISTICS 24 ...

Страница 4: ...tterns CG RAM Data 9 Figure 5 8 bit Serial Data Format 10 Figure 6 Default Configuration at Power up 11 Figure 7 Instruction Sequence 11 Figure 8 Data Sequence 11 Figure 9 Instruction Set 12 Figure 10 Down loadable Special Characters 15 Figure 11 Power Supply Requirements 18 Figure 12 External Reset Circuit 18 Figure 13 Definition of Vertical Viewing Angle 20 Figure 14 Definition of Horizontal Vie...

Страница 5: ...r a longer distance than is possible with the parallel model The RS 232 interface is a two wire communication link 1 3 Standard Features Serial data communication via RS 232C Multiple baud rates 1200 2400 4800 and 9600 Low power consumption Wide temperature range Built in diagnostics Down loadable special characters 1 4 Description The serial input Daystar Nova module includes an on board CMOS mic...

Страница 6: ...ller 1 LCD Cell Column Drivers LCD Controller 2 Column Drivers Microprocessor Temperature Compensation 3 5 8 7 6 4 1 2 10 11 TP V BIAS V BIASAdj Reset Test GND 5V RX R X Rtn Serial Receiver 5V View Angle Adjust Backlight Option FO Backlight 8 Flying Leads Figure 1 Module Block Diagram 2 1 1 Signal Description Signal Name Number Of Lines Input Output Connected RESET 1 I MPU TEST 1 I MPU VBIAS TP 1 ...

Страница 7: ...it Shift Register Seg1 Seg40 Com1 Com16 D 5 5 40 Figure 2 LCD Controller Block Diagram 2 2 1 Instruction Register IR The IR stores instruction codes such as display clear and cursor shift and address information of the display data RAM DD RAM and character generator RAM CG RAM The IR can be written from the MPU but not read 2 2 2 Data Register DR The DR temporarily stores data to be written into o...

Страница 8: ... A REV A SHEET 8 Cursor or Display Shift instructions 2 2 6 Character Generator ROM CG ROM The CG ROM generates character patterns of 5 X 7 dots from 8 bit character codes The 192 5 X 7 dot matrix characters are illustrated in Figure 3 Figure 3 Correspondence Between Character Codes and Character Patterns ...

Страница 9: ...ot used for character pattern information can be used for general purpose data RAM The 5 6 and 7 bits are never used for character pattern information and are always available for use 2 The 0 1 and 2 bits of character code correspond to the 3 4 and 5 bits of the CG RAM address 3 The 0 1 and 2 bits of the CG RAM address specify the row of the character pattern 4 The 8th row of the character pattern...

Страница 10: ... mode if the host has this capability Where this is not possible 7 bit mode should be jumper selected see section 4 2 and a special command character 19h must be sent prior to each 8 bit command or data character i e characters where B7 1 Figure 5 represents serial data formatted as one start bit eight data bits an odd or even parity with one stop bit or 2 stop bits if no parity Mark Space B B B B...

Страница 11: ... Jumper defined per section 4 2 Parity bit present Parity checking enable Parity Odd or Even 7 or 8 data bits Multiplex rate of LCD Display clear YES Display ON OFF ON Cursor location Position 0 Cursor OFF Entry mode set Shift cursor right after character entry Controller 1 Data Instructions Data Figure 6 Default Configuration at Power up 3 4 Transmission Sequence for Instructions Figures 7 and 8 ...

Страница 12: ...Sets DD RAM address DD RAM data is sent or received after this is set 40µs Read Busy Flag and Address BF Reads Busy Flag BF and Address Counter 0µs Write Data to CG or DD RAM Writes data into CG RAM or DD RAM 40µs Read Data from CG or DD RAM Reads data from CG RAM or DD RAM 40µs Controller 1 Instructions 0 0 0 1 0 0 0 1 Subsequent data is Display Module Instructions for controller 1 Controller 1 D...

Страница 13: ... Electronic Engineers Inc SIZE A CODE IDENT NO 05464 S03875 21 0214 Van Nuys California SCALE N A REV A SHEET 13 DL 0 4 bit operation BF 1 Operating internally BF 0 Can accept instruction Figure 9 Instruction Set ...

Страница 14: ...ler 1 Instruction S 12h Subsequent Data Is Controller 1 Display Data 15h Subsequent Data Is Controller 2 Instruction S 16h Subsequent Data Is Controller 2 Display Data 17h Subsequent Data Down Loads Special Characters 19h Subsequent Data Is 8 Bit Length Character 3 5 2 Sample Instructions In BASIC The following instructions are provided as an example to illustrate the correct form and to assist th...

Страница 15: ... as described in section 4 4 the user has these additional preformatted characters available Note that all down loaded character data is lost and must be reloaded after power has been removed To facilitate the use of these characters a subsequent data instruction 17h is used to inform the microprocessor that the following two bytes of data identify 1 the location of the special character to be dow...

Страница 16: ...Industrial Electronic Engineers Inc SIZE A CODE IDENT NO 05464 S03875 21 0214 Van Nuys California SCALE N A REV A SHEET 16 Figure 10 Down loadable Special Characters ...

Страница 17: ...bit settings 3 8 Diagnostics 1 The display module can be operated by the host in a HEX dump mode This diagnostic mode provides for the HEX display of all serial data received While operating in this mode the module will ignore the multiplex jumper setting and operate the display in a 1 8 multiplex mode 2 Check the module jumpers for proper baud speed and parity settings Section 4 2 3 With power OF...

Страница 18: ...its 8 Data Bits 6 E6 1 8 Mpx N A 1 16 Mpx 7 Not Used 8 Not Used Baud rate will default to 1 if no jumper is installed Jumper options 7 and 8 are omitted and will indicate as logic 1 when in self test mode 8 bit word preferred When 7 bit word is selected see section 3 1 2 for use of instruction 19 Hex Selection of NO PARITY requires use of two stop bits 5 0 ELECTRICAL SPECIFICATIONS 5 1 Absolute Ma...

Страница 19: ...Requirements To utilize the optional external reset the RESET pin must be held at ground 0 5 Volts for at least 10 milliseconds after the power supply is within the voltage tolerance Figure 12 shows the module Reset circuit 5V 1k 3 3k 330 1uF Microprocessor Internal Pull down J2 Pin 3 Figure 12 External Reset Circuit 5 3 Interface Signals 5 3 1 Serial Interface Signals The display is designed to b...

Страница 20: ...s Format Four lines of 40 characters Character Font 5x7 dot matrix with cursor Character Height w cursor 0 48 12 1mm Character Height w o cursor 0 39 9 9mm Character Width 0 24 6 1mm Overall Active Area 5 70 x 2 34 144 9mm x 59 5mm Peak Vertical Viewing Angle 20 below normal plane Viewing Mode Transflective light field Item Symbol Condition Min Typ Max Unit Viewing Angle Vertical φ1 φ2 CR 2 0 θ 0 ...

Страница 21: ...Figure 13 Definition of Vertical Viewing Angle Definition of Horizontal Viewing Angle top Viewing Display for Bottom Viewing Displays φ 20 Typically X X Y Y Normal φ 20º θ θ θ 90º θ 90º Figure 14 Definition of Horizontal Viewing Angle Display contrast ratio is given by CR B B 2 1 Where B1 Brightness of selected segment B2 Brightness of non selected segment ...

Страница 22: ...oard potentiometer This is considered to be a nominal adjustment but the user may prefer to vary this to optimize the viewing for a particular application The bias voltage is measured between VCC pin 7 and VBIAS pin 6 The viewing angle and contrast ratio may be externally controlled using an additional 10K ohm potentiometer The potentiometer on the rear of the module must first be set to the maxim...

Страница 23: ...e attenuation of the LCD cell only 10 of the backlight luminance is emitted from the display Thus to provide a brightly lit display the original light source must be 10 times brighter 8 2 Lamp Characteristics The standard light source is a 4 85 Watt 5 0 Volt halogen lamp Figure 17 below shows the standard light source and two alternates which use less power They may be satisfactory for a display i...

Страница 24: ... or polycarbonate window material It is also recommended that an air gap of at least 030 to 050 minimum be provided between the window material and the surface of the LCD to prevent the transfer of static charges to the front surface of the LCD Supertwist LCD s may activate un driven elements in response to a surface static charge on the front polarizer It may take several minutes for such a surfa...

Страница 25: ...ustrial Electronic Engineers Inc SIZE A CODE IDENT NO 05464 S03875 21 0214 Van Nuys California SCALE N A REV A SHEET 25 11 0 OUTLINE AND INSTALLATION CHARACTERISTICS Figure 18 03875 21 0214 Outline Drawing ...

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