USER`S MANUAL FOR
Contents
1. 5 2 Timing and timing diagram Item Symbol Condition C D set up time tcds C D hold time tcdh CE RD WR pulse width tcp trp twp Vdd 5V 5 Data set up time tds Vss 0V Data hold time tdh Ta 25 C Access time tacc Output hold time toh 37 Dalian Dongfu Color Display Co Ltd USER S MANUAL 5 3 Power supply connection diagram 5 4 Circuit block diagram The circuit block diagram is shown in the following figure The LCD module needs two power sources Vdd for logic and Vee for LCD drive Vo XS Note It is necessary to guard all signals from external noise as signal lines are directly connected to C MOS and are not pull up or pull down internally 5 5 Module application features 1 This module can be directly connected to 8080MPU or Z80MPU 2 This module can be set to display in combination of graphic and text modes Contents of the text area and of the graphic area are displayed simultaneously on the screen by mode set in attribute display of text 8 Dalian Dongfu Color Display Co Ltd 3 4 5 6 7 8 9 10 C119 12 13 14 USER S MANUAL mode and screen copy can be executed MPU can access the DDRAM at any time in the mode of byte bit operation Character Font 6X 8 dots or 8X 8 dots A status check must be performed before data or commands are read or written The column line coun2. 10 55 10hz amplitude 1 5mm 2hrs for each direction X Y Z 8 Handling precautions 8 1 Mounting method No defects in cosmetic and operational function are allowable Total current consumption should be below double of initial value A panel of LCD module made by Dalian Dongfu Color Display Co Ltd consists of two thin glass plates with polarizers that easily get damaged And since the module in so constructed as to be fixed by utilizing fitting holes in the printed circuit board PCB extreme care should be used when handling the LCD modules 8 2 Cautions of LCD handling and cleaning When cleaning the display surface use soft cloth with solvent recommended below and wipe lightly O Isopropyl alcohol o Ethyl alcohol D Trichlorotriflorothane Do not wipe the display surface with dry or hard materials that will damage the polarizer surface Do not use the following solvent o Water Oo Ketene 1 Aromatics 26 Dalian Dongfu Color Display Co Ltd USER S MANUAL 8 3 Caution against static charge The LCD module use C MOS LSI drivers So we recommend you Connect any unused input terminal to Vaa or Vss Do not input any signals before power is turned on and ground your body work assembly areas assembly equipment to protect against static electricity 8 4 Packaging Module employs LCD elements and must be treated as such Avoid intense shock and falls from a height To prevent module
3. Acceptable Number Ignore note Size mm lt 0 4 0 4 lt lt 0 65 0 65 lt lt 1 2 1 2 o 7 Scratches and dent on the polarizer Scratches and dent on the polarizer shall be in the accordance with 2 Black white spot and 3 Black White line 8 Stains on the surface of LCD panel Stains which cannot be removed even when wiped lightly with a soft cloth or similar cleaning 9 Rainbow color No rainbow color is allowed in the optimum contrast on state within the active area 10 Viewing area encroachment Polarizer edge or line is visible in the opening viewing area due to polarizer shortness or sealing line 11 Bezel appearance Rust and deep damages that are visible in the bezel are rejected 12 Defect of land surface contact Evident crevices that are visible are rejected 13 Parts mounting Failure to mount parts Parts not in the specifications are mounted For example Polarity is reversed HSC or TCP falls off 14 Part alignment More than 5096 of LSI IC leads is off the pad outline 15 Conductive foreign matter solder ball solder hips 0 45 5 N 1 0 3 lt b x0 45 N21 GO Average diameter of solder ball unit mm 0 5 L N21 L Average length of solder chip unit mm LSI IC lead width is more than 5096 beyond pad outline 16 PCB pattern damage Deep damage is found on copper foil and the pattern is nearly b
4. 60 C 6 0 9 0 Current Consumption LCD drive 3 4 2 Specifications for E L backlight Note lt 1 gt Half value of initial brightness at 20 C 60 RH Item Siafidatd Values Conditions i Typ Max Supply Voltage 100 125 Supply Frequency 400 400 Initial Brightness cd m nit 55 AC100 Vrms 400Hz dark room Current mA cm 0 17 AC100 Vrms 400Hz dark room Life time Note 1 Luminous Color AC100 Vrms 400Hz dark room Operating Temp i Storage Temp zu Dalian Dongfu Color Display Co Ltd USER S MANUAL Electro optical characteristics 3 5 Item Conditions LCD Driving Voltage dor an Recommended voltage ee Response Rise Time Time o 0 8 0 Decay Time i ah Vertical Viewing Angle Horizontal Contrast Ratio 20 0 0 Note 1 Definition of o and 9 2 Contrast ratio higher than 2 k22 can be obtained in this voltage range 9 0 9 0 Peer m 9 180 p 90 Pi 0 270 e e c Note 3 Definition of response time waveform Positive Display Negative Display Non selec Non select Non select Non select f l up i d lot d Ta Time Tr p Tdr S Dalian Dongfu Color Display Co Ltd USER S MANUAL Note 4 Definition of viewing angle Note 5 Optical measuring system o A 01
5. of DDRAM to be accessed D1 and D2 are the low address and high address of the unit address respectively NEL Dalian Dongfu Color Display Co Ltd USER S MANUAL 5 6 2 Control word setting The command format is as follows D1 D2 Lo 1 o o o o m NO According to different values of N1 and NO this command has four functions pte eh eta Function L9 0 owas __ a adrs Set text home address Columns ad eae of characters line Set graphic home address Columns number of characters line The text home address corresponds to the character position on the top left corner of display panel The graphic home address corresponds to the byte position on the top left corner of display panel Changing both of addresses may produce the result of scrolling D1 and D2 represent the low and high bytes The text area number of characters line set and graphic area number of characters line set are used to adjust the width column of valid display screen The width indicates the number of character or the number of bytes can be validly displayed Define the width of display screen to be CL by hardware and the width of display screen to be TA by this command and then the relationship between text area and its corresponding position on LCD panel is shown as follows a TA lt CL TH stands for the text home address TH hae TH TA 1 THATA seats TH 2TA 1
6. same time Function X Address Y Address A 21H N0 1 Set Cursor Pointer lower 7 bits are valid lower 5 bits are valid Address losers bis are valid 22H N1 1 Set Offset Register High address 24H N2 1 Set Address Pointer A Set Cursor Pointer D1 stands for the horizontal distance number of characters of cursor to the top left corner of the actual LCD panel D2 stands for the vertical distance number of character lines Setting and changing the cursor position must be performed through resetting the cursor pointer The cursor pointer is not related to address pointer and has no auto change function B Set CGRAM Offset Register Set the higher 5 bits of CGRAM s 16 bit address in DDRAM The actual address of CGRAM is Offset Adrs C4 C3 C2 C1 C0 Char Code D7 D6 D5 D4 D3 D2 D1 DO Line Adrs R2 R1 RO Actual Adrs A15 A14 A13 A12 A11 A10 A9 A8 A7 A6 A5 A4 A3 A2 A1 AO R2 RO represent one line of the self designed 8X8 dots characters When the internal CGROM mode is set in mode set the character code allocated to external character generator is 80H FFH When the external CGROM mode is set in mode set the character code allocated to the external character generator is 00H FFH For example when the units of 1800H 1FFFH 2K in DDRAM are allocated to CGRAM the offset register could be set to 03H Thus the address of character whose code is 80H in DDRAM is 1C00H 1C07H C Set Address Pointer set the unit address
7. text display on off N3 1 0 graphic display on off 5 6 5 Cursor pattern selections format is shown as below no parameter 5 6 6 5 6 7 5 6 8 5 6 9 i o 1 o o n2 N N The cursor pattern in 8 dots segment X N line The value of N is in the range of 1 line to 8 lines 00H 07H Data auto read write mode no parameter 4 0 1 5 9 0 Nt NO Using this command MPU could continuously read write the data in DDRAM without the need of inputting the read write command every time The address pointer is automatically increased by 1 after each datum The Auto reset command must be sent after all data have been sent to clear Auto mode N1 and NO function as below Data read write mode the format is shown below D1 Lot Te 11N2 N No D1 N2 N1 NO Code Function Data 0 0 0 COH Data write ADP 1 0 0 1 C1H Data read ADP 1 Data 0 1 0 C2H Data write ADP 1 0 1 1 C3H Data read ADP 1 Data 1 0 0 C4H Date write same ADP 1 O 1 C5H Date read same ADP Screen peek the format of command is as follows no parameter r pom 3p o45 770 7 20 7 0 0 0997 This command is used to transfer 1 byte of displayed data 8X1 dots positioned by current address pointer to the data stack this byte can then be read from the MPU by data access The logical combination of text and graphic display data on the LCD screen can be read by this command The address pointer should be set in graphic
8. 2 21 Dalian Dongfu Color Display Co Ltd USER S MANUAL CJNE R2 408H TCR2 RET TAB2 DB 37H 25H 2CH 23H 2FH 2DH 25H 01H TAB3 DB ODH ODH ODH ODH ODH ODH ODH 08H 5 8 6 Application Program For example to display on the top left corner of the screen the program is ORG 0000H STAR LCALL INI Initialize MOV R2 00H Display MOV R3 00H MOV R4 24H LCALL WR MOV R3 01H MOV R4 0COH LCALL WR1 RET The following is the flow diagram of the programs 6 Quality level 6 1 Inspection conditions 6 1 1The environmental conditions for inspection shall be as follows 22 Dalian Dongfu Color Display Co Ltd USER S MANUAL Room temperature 20 3 C Humidity 652 2096 RH 6 1 2 The external visual inspection The inspection shall be performed by using a 20W fluorescent lamp for illumination and the distance between LCD and the eyes of the inspector should be at least 30cm 6 1 3 1 Light method 6 2 Sampling procedures for each item s acceptance level table Defect type Sampling procedure AQL MIL STD 105D Inspection Level I Major defect Normal inspection Q ED 01 98 II Single sample inspection MIL STD 105D Inspection Level Minor defect Normal inspection Q ED 01 98 II Single sample inspection 6 3 Classification of defects 6 3 1 Major defect A major defect refers to a defect that may substantially degrade usability for product applications 6 3 2 Minor defect A minor defe
9. 28 Duty Viewing Direction 6 O clock Backlight E L RAM Display capacity 8k byte S RAM built in Controller Toshiba T6963C built in CG ROM RAM capacity Built in 128 words Character Generator CG ROM 3 2 Mechanical features Item Specifications Dimensional Outline 99 0 W X 100 0 H x 10 0 Max T Number of Dots 128 W X128 H Dots 21C X 16L 336 Number of Characters 16C X 16L 256 Viewing Area 69 0 W X 69 0 H Active Area 63 96 W X 63 96 H Dot Pitch 0 5 W x 0 5 H in case of 6X8 Fonts in case of 8X8 Fonts Dot Size 0 46 W x 0 46 H Weight Approx 80 3 3 Absolute maximum ratings 5 Dalian Dongfu Color Display Co Ltd User s Manual Item Symbol in Max Supply Logic Vdd 3 7 0 Voltage LCD drive Vdd Vee 28 Input Voltage Vi i Vdd 0 3 Operating Temperature Top 60 Storage Temperature Tstg 70 Humidity 90 3 4 Electrical characteristics 3 4 1 Electrical characteristics Note 1 Duty 1 128 2 All dots on static state Item Symbol Conditions Logic Vdd LCD drive Vdd Vee H Level Vih Vdd 5V 5 L Level Vil H Level Voh Vdd 5V 5 L Level Vol Frame Frequency Fflm Vdd 5V Supply Voltage Input Voltage Output Voltage Logic Idd nd Vdd Vee 15 0V lee Fflm 75Hz Tas 10 C b 0 9 0 LCD Driving Voltage Vdd Vee Ta 25 C Recommended Voltage 20 020 Ta
10. 82 temperature regulated chamber Note lt 6 gt Definition of Contrast Ratio K Positive Display Negative Display Brightness of non selected dot B2 Contrast Ratio K Brightness of selected dot B1 4 Dimensional outline See the next page S5 Dalian Dongfu Color Display Co Ltd USER S MANUAL A8AORRARRARRRRAARA A G D 04 x i EE 5 I O terminals 6 Dalian Dongfu Color Display Co Ltd USER S MANUAL Note There are two types of this module One is with built in DC DC converter and the other is without DC DC converter The following explanation is only applied for the module without built in DC DC converter For the module with DC DC converter please leave Vee open and only supply the 5V power for Vdd and ignore the following part about negative voltage 5 1 I O connection table Symbol Function FG Frame ground connected to metal bezel GND Ground VCC Power supply 5V VEE Power supply negative variable WR Data write active at low level RD Data read active at low level CE Chip enable active at low level WR L C D H Command write C Dz L Data write NR H C D2 H Command read C D L Data read RESET Reset control module resets active at low level Font selection Connect to Vdd 6X 8 dots font Connect to Vss 8 x 8 dots font Data bus DO is LSB and D7 is MSB C D FS
11. Blank MM TA valid display screen gt CL EZ b TA gt CL TEE ea TH CL 1 TH TA 1 TH TA TH TA CL 1 TH 2TA 1 ken To ne HpE 07 sees Do not transfer EE CL valid display screen gt e TA gt The way in which the graphic area corresponds to its position in display screen is similar to the way in which the text area corresponds to its position in display screen The only difference is that in graphic area one byte corresponds to 8 bits graphic data If the graphic area is defined to be the same number of characters line of 12 Dalian Dongfu Color Display Co Ltd USER S MANUAL LCD the home address of every line equals to the end address of the previous line 1 5 6 3 Mode setting the format of command is as follows no parameter i o o o N3 N N N N3 select character generator mode N3 1 select CGRAM and the character code is 00 FFH N3 0 select internal CGROM Since the character code of CGROM is 00 7FH when take 80H FFH as character code CGRAM is automatically selected N2 NO0 Combined display mode setting The functions are shown as below Means of Combination OR mode N2 N1 NO AND mode Text attribute mode Only when the text mode and graphic mode are both on the combined display mode above and text attribute mode sett
12. ET This program is generally used When entering data and single parameter commands the data and parameter should be sent into R3 The entrance of subprogram is WR4 and WH1 respectively The entrance of no parameter command is WR2 3 Data read subprogram Register to be used RO A Output register A stores data RD LCALL BF1 MOV RO 00H MOVX A RO RET 5 8 Example of Application Program The precondition is FS 0 that is choose 8X8 dots 5 8 1 Subprogram for clearing DDRAM CLR MOV R2 00H RAM address 0000H MOV R3 00H MOV R4 24H Set address command LCALL WR MOV R4 0BOH set auto write commands LCALL WR2 MOV R2 1FH auto write 8K byte CLR1 MOV R3 0FFH CLR2 LCALL BF3 check status STA3 CLR A LCALL WR4 write 00H DJNZ R3 CLR2 DJNZ R2 CLR1 MOV R4 0B3H Auto write end commands LCALL WR2 247 Dalian Dongfu Color Display Co Ltd USER S MANUAL RET 5 8 2 Initialization subprogram INI LCALL CLR MOV R2 00H Set text area MOV R3 00H MOV R4 40H LCALL WR MOV R2 10H MOV R3 00H MOV R4 41H LCALL WR MOV R2 00H Set graphic area MOV R3 08H MOV R4 42H LCALL WR MOV R2 10H MOV R3 00H MOV R4 43H LCALL WR MOV R4 80H Set display mode LCALL WR2 MOV R4 94H Set display on off text on LCALL WR2 RET Initialization ends The following is an example display in the top left corner of the screen LCALL INI MOV R2 00H MOV R3 00H MOV R4 24H LCALL WR MOV
13. H ACC push code into stack MOVC A A DPTR read character matrix MOV R3 A MOV R4 0COH LCALL WRI1 POP ACC pop code from stack PUSH ACC push code into stack ADD A 10H locate the pointer to the pattern of the byte on the right MOVC A A DPTR read character pattern MOV R3 A LCALL WRI1 MOV A R2 MOV R3 A R3 R2 20 Dalian Dongfu Color Display Co Ltd USER S MANUAL MOV R2 0EH number of cycles MOV R4 0C1H WRHZG2 LCALL WR2 change the address pointer DJNZ R2 WRHZG2 MOV A R3 MOV R2 A recover R2 POP ACC pop code of stack INC A code 1 DJNZ R2 WRHZG1 RET 5 8 5 Application of Text Attribute Mode Display the character string WELCOME on the top left corner of the screen WELCOME blink of reverse display normal display The subprogram is TCR in which TAB2 acts as character code and TAB3 as corresponding text attribute code TCR MOV R4 9CH start the text and graphic mode LCALL WR2 MOV R4 84H text attribute mode set LCALL WR2 MOV R2 00H MOV R3 00H MOV R4 24H address pointer set LCALL WR MOV R2 00H number of characters TCR1 MOV DPTR TAB2 stable of characters MOV A R2 MOVC A A DPTR MOV R3 A MOV R4 0COH LCALL WR1 INC R2 CJNE R2 08H TCR1 MOV R2 00H MOV R3 08H MOV R4 24H address pointer set LCALL WR MOV R2 00H number of characters TCR2 MOV DPTR TAB3 table of characters MOV A R2 MOVC A A DPTR MOV R3 A MOV R4 0COH LCALL WRI INC R
14. R3 01H MOV R4 0COH LCALL WR1 RET 5 8 3 Set up CGRAM Set contents of offset register 1 Set character pattern data and character codes of the characters Take an example of the Chinese character jk choose the character codes between 80H and FFH then the font data and character codes of the character JE are defined as follows 18 Dalian Dongfu Color Display Co Ltd USER S MANUAL Structure of dk character pattern data Character Code Top left 04H 04H 04H 04H 04H 7CH 04H 04H 80H Bottom left 04H 04H 04H 04H 1CH E4H 44H 00H 81H Top right 80H 80H 88H 98H AOH COH 80H 80H 82H Bottom right 80H 80H 80H 8CH 82H 82H 7EH 00H 83H Write into CGRAM WRCG MOV R2 03H MOV R3 00H MOV R4 22H set offset register LCALL WR MOV DPTR TAB1 matrix data home address MOV R2 00H MOV R3 1CH CGRAM address MOV R4 24H set address pointer LCALL WR MOV R4 0BOH set auto write LCALL WR2 MOV R2 20H number of matrix data WRCG1 LCALL BF3 check status STA3 CLR A MOVC A A DPTR read matrix data LCALL WR4 write into CGRAM INC DPTR DJNZ R2 WRCG1 MOV R4 0B2H Auto write end command LCALL WR2 RET TAB1 DB 04H 04H 04H 04H 04H 7CH 04H 04H DB 04H 04H 04H 04H 1CH OE4H 44H 00H DB 80H 80H 88H 98H 0A0H OCOH 80H 80H DB 80H 80H 80H 80H 82H 82H 7EH 00H 5 8 4 Chinese Characters Display Chinese character patterns are in the s
15. USER S MANUAL FOR LCD MODULE EDM128128A Dalian Dongfu Color Display Co Ltd USER S MANUAL Contents T 9cOpg eec aria ac eMe aM a inta ia n 2 2 Warranty 2 3 Features 2 4 Dimensional outline 5 5 I O terminals 6 6 Quality level 22 7 Reliability 25 8 Handling precautions 26 9 Precaution for use 27 10 Appendix 28 vy Pr Dalian Dongfu Color Display Co Ltd User s Manual 1 Scope This manual defines general provisions as well as inspection standards for standard LCD module supplied by Dalian Dongfu Color Display Co Ltd If the event of unforeseen problem or unspecified items may occur please contact the nearest supplier or our company 2 Warranty If module is not stored or used as specified in this manual it will be void the 12 month warranty 3 Features 3 1 Features Display Mode Transflective and positive type Yellow green and STN LCD Display Color Display dot Black Background Yellow green Display Format 128 w X 128 h full dots Input Data 8 bit parallel data interface from a MPU Multiplexing Ratio 1 1
16. area Screen copy the format of command is as follows no parameter 14 Dalian Dongfu Color Display Co Ltd USER S MANUAL pops gp ee ae ee 30 52 The command copies a single raster line of data positioned by the address pointer in graphic area to the corresponding area in the graphic area If the attribute function is being used this command is not available 5 6 10 Bit set reset no parameter This command is used to set or reset a bit of the byte specified by current address pointer N3 1 set N3 0 reset N2 NO corresponds to the DO D7 bit 5 7 Module and MPU connection MPU uses data bus and control signals to control the module by means of direct storage access or I O access Interface circuit is shown in following diagram MPU 8031 Power connection Data bus 8031 is connected directly to the data bus of module RD and WR of 8031 act as the read write control signal of module CE can be decoded by address bus For example output YO of IC 138 as CE When test the module independently CE could be grounded directly Output AO of 8031 address bus as C D A0 1 stands for the address of command A0 0 stands for address of data Each subprogram is as follows 15 Dalian Dongfu Color Display Co Ltd USER S MANUAL 1 Status read subprogram Registers to be used RO A Output register A store status word BF MOV RO 01H address of command MOVX A RO read status word RET Relevant subprograms could b
17. ct refers to a defect that deviates from existing standards almost unrelated to the effective use of the product or its operation 23 Dalian Dongfu Color Display Co Ltd USER S MANUAL 6 4 Inspection standards Defect type Item Criterion for defects 1 Displ i 1 Non display 2 Vertical line is deficient Maior isplay on inspection Display 4 3 Horizontal line is deficient 4 Cross line is deficient l Size mm lt 0 3 Ignore note 0 3 o lt 0 45 0 45 lt o lt 0 6 0 3 lt D Note Not allowed if four more spots crowd together L lt 10 Wx 0 03 Ignore 5 0 lt L lt 10 0 03 W x 0 04 3 5 0 lt L lt 10 0 04 W x 0 05 2 1 0 lt L lt 10 0 05 W x 0 06 2 1 0 lt L lt 10 0 06 lt W lt 0 08 1 L lt 10 0 08 lt W follows 2 point defect Defects separate with each other at an interval of more than 20mm 2 Black White spot 3 Black White line i 7 4 Display pattern on BNET Unit mm A B lt 0 45 0 lt C pee lt oss soos 2 2 Note 1 Up to 3 damages acceptable 2 Not allowed if there are two or more pinholes every three fourths inch Size_ mm lt 0 7 Ignore note 0 7 0 1 0 1 0 0 1 5 1 5 do Note 1 Conformed to limit samples 2 5 Spot like contrast irregularity 2 Intervals of defects are more than 30mm 24 Dalian Dongfu Color Display Co Ltd USER S MANUAL Criterion for defects 6 Bubbles in polarizer
18. d display position in LCD panel is shown below TH TH 1 stu TH CL TH TA TH TA 1 PM TH TA CL TH TA TA TH TA TA 1 ns TH 2TA CL TH 2TA TA TH 2TA TA 1 b TH 3TA CL TH 15TA TH 15TA 1 e TH 15TA CL 9 Dalian Dongfu Color Display Co Ltd USER S MANUAL Note TH the text home address TA the width of text area number of characters line to be defined by user CL number of characters line set by hardware the CL of this module is 40 15 The relationship between graphic area and display position in LCD panel is shown below GH DB7 DBO0 GH 1 32 GH CL GH TA GH TA 1 GH TA CL GH TA TA GH TA TA 1 ET GH 2TA CL GH 2TA TA GH 2TA TA 1 GH 3TA CL GH 127TA GH 127TA 1 ds GH 127TA CL Note GH the graphic home address TA the width of graphic area number of characters line to be defined by user CL number of characters line set by hardware The CL of this module is 40 Note In Text mode or Graphic mode when TA CL the relationship between the valid display area of the LCD panel and DDRAM address is detailed in 5 6 2 5 6 Commands The command of this module may have one operand datum or two operand data or none It is important to send the data first and then to send the command code If the number of the operand data is more than specified the last is valid The status check must be performed every time before the data and commands ar
19. e derived from above mentioned program a Subprogram of STAO and STA1 status check Before the command write and data write and read Both STAO and STA1 should be defined as 1 BFI LCALL BF JNB ACC 0 BF1 STAO status check JNB ACC 1 BF1 STAT status check RET b Subprograms of STA2 status check STA2 should be checked to replace STAO and STA1 during the reading of each datum STA2 1 should be confirmed before each reading during the continuous reading BF2 LCALL BF JNB ACC 2 BF2 STA2 status check RET Similarly subprogram of STA3 status check is listed as follows BF3 LCALL BF JNB ACC 3 BF3 STA3 status check RET c After the screen peek and screen copy commands the STA6 status should be checked When STA6 0 it indicates that the commands are correctly performed For example BF6 LCALL BF JB ACC 6 ERR STA6 status check RET ERR scosese Error disposal program 2 Subprogram of writing command and data Registers to be used RO R2 R3 R4 A Input register R2 is the first byte of parameter R3 is the second byte of parameter and R4 is the command code WR LCALL BF1 Entrance of double parameter command MOV A R2 16 Dalian Dongfu Color Display Co Ltd USER S MANUAL LCALL WR4 WR1 LCALL BF1 Entrance of single parameter command MOV A R3 LCALL WR4 WR2 LCALL BF1 entrance of no parameter command MOV A R4 SJMP WR5 WR4 MOV RO 00H entrance of data writing data terminal address WR5 MOVX RO A R
20. e read or written The format of status word is as follows STA6 STA5 STA3 STAO STAO check command execution capability enable 0 disable STA1 check data read write capability enable 0 disable STA2 check auto mode data read capability enable 0 disable STA3 check auto mode data write capability enable 0 disable STA4 not used 1 1 i STA5 check controller operation capability 1 enable 0 disable STAG error flag Used for screen peek and screen copy commands 1 error 0 no error STAT check the blink condition 1 normal display 0 display off Because the functions of status bits are different different status bit should be checked when different command is executed Note 10 Dalian Dongfu Color Display Co Ltd USER S MANUAL 1 It is necessary to check STAO and STA1 at the same time There is a possibility of erroneous operation due to a hardware interrupt For most modes STAO STA1 are used at a status check STA2 and STA3 are valid in auto mode STAO and STA1 are invalid STA6 is valid in screen peek and screen copy mode STA5 and STA7 mirror the interior operational status Seldom used c RON 5 6 1 Setting registers The format is as follows D1 D2 o o 1 o o N j N N D1 D2 is the first and the second parameters respectively and the last byte is command code According to the values of NO N1 N2 this command has three meanings Among NO N1 N2 any two of them can not be 1 at the
21. equence of top left corner 8 bytes from top to bottom gt left bottom left corner 8 bytes from top to bottom top right corner 8 bytes from top to bottom bottom right corner 8 bytes from top to bottom 1 Display of Chinese Character in Text Mode In this mode only 64 Chinese characters in 16X16 dots can be entered as a maximum 4 character codes for a Chinese character The address pointer is already positioned on the top left corner of the character to be entered Register to be used R2 R3 R4 A Input register R3 store Chinese character codes 19 Dalian Dongfu Color Display Co Ltd USER S MANUAL WRHZT MOV R4 0COH data write address 1 WRHZT1 LCALL WRI R3 set in the main program for example R3 80H INC R3 INC R3 LCALL WR1 R3 82H DEC R3 R3281H MOV R2 0EH MOV R4 0C1H data read address 1 LCALL WR2 DJNZ R2 WRHZT1 move the address pointer to the left bottom corner of the Chinese character MOV R4 0COH LCALL WR1 INC R3 INC R3 R3 83H LCALL WR1 RET 2 Display of Chinese character in the graphic mode This method is to build a Chinese character storage area in the ROM of MPU system and the Chinese character patterns should be input byte by byte in graphic mode Register to be used A R2 R3 R4 DPTR is a home address of one Chinese character matrix array and will be assigned in the main program WRHZG MOV R2 10H number of cycles MOV A 00H WRHZG1 PUS
22. ings below are valid After the text attribute setting the graphic area will be converted into text attribute area and store the text attribute codes The text attribute area is of the same size as text area In addition the text attribute codes of the character codes in text area are stored in the same address of graphic area Every byte in the graphic area determines the feature of its corresponding character including the normal display reverse display inhibit display blink of normal display blink of reverse display and blink of reverse display of characters In the text attribute area the text attribute codes of characters are made up with a byte s low four bits D7 D6 D5 D4 D3 D2 D1 DO ege 3 o ee d3 blink control 1 blink 0 no blink d2 d0 Function 0 o o Normal sy Reverse display Inhibit display blank To work in the text attribute mode the user could build an independent area in the DDRAM as text attribute area In this case the graphic home address should be converted into the text attribute home address and thus keep the data in the previous graphic area DDRAM could be divided as follows Graphic area Text attribute area Text area CGRAM 2K 13 Dalian Dongfu Color Display Co Ltd 5 6 4 USER S MANUAL Display mode setting the format of command is as follows no parameter 9 5030 end E UNS az SNE ENDE S NO 1 0 cursor blink on off N1 1 0 cursor display on off N2 1 0
23. roken Damage on copper foil other than 1 above 17 Faulty PCB correction Due to PCB copper foil pattern burnout the pattern is connected using a jumper wire for repair 2 or more places are corrected per PCB Short circuited part is cut and no resist coating has been performed 18 Bezel flaw Bezel claw missing or not bent 19 Indication on name plate sampling indication label T Reliability 7 1 Lifetime Dalian Failure to stamp or label error or not legible all acceptable if legible The separation is more than 1 3 for indication discoloration in which the characters can be checked 25 Dongfu Color Display Co Ltd 7 2 Items of reliability Item USER S MANUAL 50 000 hours 25 C in the room without ray of sun Condition Criterion 1 High Temperature Operating 60C 96hrs No cosmetic failure is allowable Contrast ratio should be between initial Low Temperature Operation 20C 96hrs value 10 Total current consumption should be below double of initial value Humidity 40 C 90 RH 96hrs High Temperature 70 C 96hrs Low Temperature 30 C 96hrs Thermal shock 25 C gt 30 C gt 25 C gt 70 C 5 min 30 min 5 min 30 min 5 cycle 55 60 RH No cosmetic failure is allowable Contrast ratio should be between initial value 20 Total current consumption should be below double of initial value Vibration
24. s from degradation do not operate or store them exposed direct to sunshine or high temperature humidity 8 5 Caution for operation It is an indispensable condition to drive LCD module within the limits of the specified voltage since the higher voltage over the limits may cause the shorter life of LCD module An electrochemical reaction due to DC direct current causes LCD undesirable deterioration so that the uses of DC direct current drive should be avoided Response time will be extremely delayed at lower temperature than the operating temperature range and on the other hand at higher temperature LCD module may show dark color in them However those phenomena do not mean malfunction or out of order of LCD module which will come back in the specified operating temperature 8 6 Storage In the case of storing for a long period of time the following ways are recommended Storage in polyethylene bag with the opening sealed so as not to enter fresh air outside in it And with not desiccant Placing in a dark place where neither exposure to direct sunlight nor light is Keeping the storage temperature range Storing with no touch on polarizer surface by any thing else 8 7 Safety It is recommendable to crash damaged or unnecessary LCD into pieces and to wash off liquid crystal by either of solvents such as acetone and ethanol which should be burned up later When any liquid leaked out of a damaged glass cell comes in contact with
25. ter and display register are cleared by RESET Disable the display using the clear display register After power on it is necessary to reset by software After reset use DISPLAY ON instruction to restore the former contents displayed on the screen By the hardware setting display columns CL are defined 40 characters long maximum transferable amounts of data every line Display lines are defined 128 by hardware setting This module has a 128 word character generator ROM see also Appendix and allocation of external Character Generator RAM can be made easily in DDRAM DDRAM can be allocated to text area graphic area and CGRAM area The text home address and the graphic home address SAD correspond to the display bit on the top left corner of the LCD panel In text area one byte corresponds to a character on the screen In 6 lt 8 dot matrix one byte in graphic area corresponds to 6X 1 dot matrix on the screen The lower 6 bits of a byte are valid In 8X8 dot matrix one byte in graphic area corresponds to 8X 1 dot matrix on the screen Cursor display mode is on only in the text mode At this time what is displayed is the logical OR of cursor and the character where the cursor is For some commands that need operand data it is important to send the operand data first and then the command code Text Attribute mode is only applicable in text mode In this case both text mode and graphic mode should be on The relationship between Text Area an
26. your hands please wash it off well at once with soap and water 9 Precaution for use 9 1 Both parties should provide a limit sample on an occasion when both parties agree its necessity 27 Dalian Dongfu Color Display Co Ltd USER S MANUAL The judgement by a limit sample shall take effect after the limit sample has been established and confirmed by both parties 9 2 On the following occasions the handling of problem should be decided through discussion and agreement between responsible of the both parties When a question is arisen in this manual When a new problem is arisen which is not specified in this manual Some problem is arisen due to the change of inspection and operating conditions in users When a new problem is arisen at the customer s operating set for sample evaluation in the customer site 10 Appendix Character Code Table 28 Dalian Dongfu Color Display Co Ltd
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