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APPLICATION REVISIONS NEXT ASSY FINAL ASSY DESCRIPTION DATE APPROVED – PRODUCTION RELEASE/E.O. 30145 12/2/94 D. Goodale E.O. 36743, Revised and Redrawn 2/13/02 D. Goodale Specification 4 x 20 Daystar Nova LCD Module With Parallel Data Input and Fiber Optic Backlight Model 03875–06–0114 SHEET REVISION STATUS...
Table of Contents Paragraph Title Page GENERAL INFORMATION..........................5 1.1 Introduction..............................5 1.2 Application ..............................5 1.3 Description ..............................5 LOGICAL STRUCTURE AND FUNCTION ....................6 2.1 LCD Module..............................6 2.1.1 Signal Description..........................6 2.2 LCD Controller ..............................7 2.2.1 Instruction Register (IR).........................7 2.2.2 Data Register (DR)..........................7 2.2.3 Busy Flag ...............................7 2.2.4 Address Counter (AC) ...........................7 2.2.5 Display Data RAM (DD RAM) ........................7 2.2.6 Character Generator ROM (CG ROM) ....................8...
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Table of Contents Paragraph Title Page 7.3 Standard Operation.............................13 INSTALLATION NOTE ..........................13 ACCESSORIES............................13 10.0 OUTLINE and mounting characteristics .....................13 SIZE CODE IDENT Industrial Electronic Engineers, Inc. S03875–06–0114 05464 Van Nuys, California Scale: NONE Rev A Sheet 3...
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List of Figures Figure Title Page Figure 1 LCD Module Block Diagram ........................6 Figure 2 LCD Controller Block Diagram ......................7 Figure 3 Correspondence Between Character Codes and Character Patterns ..........8 Figure 4 Relationship Between CG RAM Address, Character Codes (DD RAM) and Character Patterns (CG RAM Data)............................9 Figure 5 LCD Controller Instruction Set......................10...
For applications where the display is remotely located up to 50 feet from the host processor, the serial data input option should be used. The serial option model is described in IEE specification S03875–06–0214. Description The Daystar Nova module is a self–contained 1/16 multiplexed unit. A simple parallel interface is provided and can be configured as either 4 or 8 bits.
LOGICAL STRUCTURE AND FUNCTION LCD Module Figure 1 illustrates the major components of the serial option Daystar Nova module. The module provides means for an external viewing angle adjustment potentiometer (V Adj.) at Pin 4, and connections for optional BIAS RESET and self–test switches at Pins 3 and 5.
LCD Controller Address Timing Generation Counter (AC) Circuit Display Data (DD RAM) Com1–Com16 80x8 bits DB4–DB7 DB0–DB3 Character Character Generator Generator (CG RAM) (CG ROM) Busy Seg1–Seg40 Flag 512 Bits 7200 Bits Parallel/Serial Data Conversion Circuit 40–bit Shift Register (Parallel Data –Serial Data) Figure 2 LCD Controller Block Diagram 2.2.1 Instruction Register (IR)
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characters are illustrated in Figure 3. Figure 3 Correspondence Between Character Codes and Character Patterns Note: Addresses 00h through 0Fh are reserved for CG RAM Addressing. Addresses 10h through 1Fh and 80h through 9Fh are not used. SIZE CODE IDENT Industrial Electronic Engineers, Inc.
2.2.7 Character Generator RAM (CG RAM) The CG RAM allows the user to define 8 types of 5 X 7 character patterns. Figure 4 shows the relationship between CG RAM addresses and data patterns (Refer to Set CG RAM Address and Write to CG or DD RAM instructions).
OPERATION Instruction Set Instruction Code Description Execution R/W DB Time (Max) Clear Display Clears entire display and sets DD RAM to 0 1.64 ms Sets DD RAN counter to 0. If the display has been shifted, characters are returned to their initial Return Home 1.64 ms positions.
Power Up Instructions Sequence Upon power up, the Daystar Nova module is set to a default mode of operation. Under some power up circumstances, the default mode may be improperly set. Consequently, the following instructions should always be executed in the host systems initialization routine. Step Operation Function Set for 8 bits...
* = Cursor Figure 8 Display Shift Right from Initial Conditions * = Cursor # = Last Character Entered Figure 9 Load Character with S=1, I/D=0 from Initial Conditions * = Cursor # = Last Character Entered Figure 10 Load Character with S=1, I/D=1 from Initial Conditions Instructions Affecting Custom Characters The module allows the user to define 8 unique special characters.
Electrical Characteristics (V = 5V ±10%) Item Symbol Condition Unit Input "High" Voltage Input "Low" Voltage –0.3 Output "High" Voltage (TTL) = 0.205 mA – Output "Low" Voltage (TTL) = 1.200 mA – Output "High" Voltage (CMOS) = 0.040 mA 0.9 V –...
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t t t t t t t t t t t t Valid Data – DB Figure 11 Interface Timing (Write) – DB Valid Data Figure 12 Interface Timing (Read) SIZE CODE IDENT Industrial Electronic Engineers, Inc. S03875–06–0114 05464 Van Nuys, California Scale: NONE Rev A Sheet 14...
Timing Sequence for 8 Bit Parallel Interface Figure 13 illustrates the typical Busy Flag check sequence for an 8 bit data interface. Internal Internal Operation Data Busy Busy IR 7 Busy Instruction Busy Flag Busy Flag Busy Flag Instruction Write Check Check Check...
Connector Pin Assignments (P1) Pin No. Function (Factory Set–up Test Point) BIAS N/C * (Viewing Angle Adjustment) (Read = Logic 1) (Pin Removed) Ground Enable (E1) Ground Ground Ground Ground Ground Ground (+5V – Parallel with Pin 24) (+5V – Parallel with Pin 22) When the display module includes the serial data input option, Pin 3 is internally connected to provide signal E2 as an output to a second display module.
ENVIRONMENTAL CHARACTERISTICS Operating Temperature: –30 to +80°C Humidity: (@ 40ºC) 95% RH (non–condensing) Humidity ( 40 C): Absolute humidity must be lower the humidity of 95% RH at 40 C Vibration: 10g at 10 to 400Hz (3 axes) Shock: 10g (all axes) Non–Operating Temperature: –40°C to +85°C...
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Normal = +90º –X = –90º –Y Figure 15 Definition of Vertical Viewing Angle Definition of Horizontal Viewing Angle–top Viewing Display (for Bottom Viewing Displays = –20° Typically) Normal = +20º – –X = –90º = +90º –Y Figure 16 Definition of Horizontal Viewing Angle Display contrast ratio is given by: Where: B...
Brightness Curve for Selected Segment Brightness Curve for Non–selected Segment Setpoint Driving Voltage Figure 17 Definition of Contrast Ratio (CR) Definition of optical response. 10% ON 90% ON Excitation Figure 18 Definition of Optical Response Viewing Angle Adjustment The factory preadjusts the viewing angle of the display by setting the LCD bias voltage to 10.2 Volts using the on–board potentiometer.
FIBER OPTIC BACKLIGHT FO Backlight Description The module contains a light emitting flat panel constructed of plastic optical fibers which convey the light from a separately located light source. The panel is heat free, has indefinitely long life and has good brightness uniformity.
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Standard Operation Lamp Color Temperature: 2900 – 3100 K Display Luminance: 3.0 – 4.5 ft–L Luminance Uniformity: AVG 30% Operating Temperature: –30 to +80 C Storage Temperature: –40 to +85 C INSTALLATION NOTE To protect the front polarizer from accidental damage it is highly recommended that the LCD be mounted behind a clear glass or polycarbonate window material.
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