LCD Module User Manual
Contents
1. 00 ___ 0120H OI3EH __ 0140H oH OfBEH 015FH 0160 _ OI7FH 01A0H O1COH 3 area set D1 00 41H The columns of display are defined by the hardware setting This command can be used to adjust columns of display GG24064A3 02WAO0 A00 Page 15 of 27 example LCD size 20 columns 4 lines Text home address 0000H Text area 0014H CL 32 columns 4 lines 4 Graphic area set D1 00 43H The columns of display are defined by the hardware setting This command can be used to adjust columns of graphic display example LCD size 20 columns 2 lines Graphic home address OOOOH Graphic area 0014H CL 32 columns 2 lines Ls LCD 4 The address in graphic area can be continuous and RAM area can be used without ineffective area if graphic area is defined the same number as the actual column number of LCD display 12 2 3 Mode set _ 1000X011 J AND mode CT 1000x100 TEXTATIRBUTE mode 10000 intemal character generatormode 0 exemachardergeneraormode X invalid The display mode is defined by this comm2. LIII ign 1211 517 Seen SRR TT ERG FETE 1 Fees 1M E E E T Coe O CET _______ ee GG24064A3 02WAO0 00 26 of 27 indLcd 16 Revision records Ref pages GG24064A3 02WAO0 00 Page 27 of 27
3. Screen peek Screen Copy 11101000 ESH Screen Copy BitSeUReset 11110 FOHOF7H BiCla 11111xxx__ FSHOFFH BitSet GG24064A3 02WAO0 00 Page 12 of 27 indLCd 12 2 Description of command 12 2 1 Register setting HEX _ 00100001 ziH CURSOR POINTER SET 1 CURSOR POINTER SET D1 D2 21H The position of cursor is specified by X address Y address The cursor position is moved only by this command The cursor pointer doesn t have the function of increment and decrement The shift of cursor are set by this command X address Y address are specified following X address OOH 4FH lower 7bits are valid Y address OOH 1FH lower 5bits are valid 1 1 screen drive 2 2 screen drive X ADRS 00 4FH X ADRS 00 4FH Y ADRS OOH OFH Y ADRS screen YADRS 10H 1FH lower screen 2 0FFSET REGISTER SET D1 00 22H The offset register is used to determine external Character Generator RAM area The LCM assign External character generator when character code set 80H to FFH in using internal character generator Character code 00H to 80H assign External Character Generator when External generator mode The senior five bits define the start address in external memory of the CG RAM area The next eight bits represent the character code of the character In internal CG ROM mode character codes 00H to 7FH represent the predefined internal CG ROM ch
4. P24 14 LCD RAM P25 15 Standard Character pattern P26 16 Revision 27 GG24064A3 02WAO0 A00 Page 2 of 27 FindLed 1 Precautions in Use of LCD Module 1 Avoid applying excessive shocks to the module or making any alterations or modifications to it 2 Don t make extra holes on the printed circuit board modify its shape or change the components of LCD Module Don t disassemble the LCM Don t operate it above the absolute maximum rating Don t drop bend or twist LCM soldering only to the terminals otorage please storage in anti static electricity container and clean environment 2 General Specification Outline dimension 180 0 W X65 0 H X13 5MAX T oom 3 Absolute Maximum Ratings 9 4 5 6 7 gt GG24064A3 02WAO0 A00 Page 3 of 27 FindLed 4 Electrical Characteristics wwe v_ eem e D _ 9 V tm Ine 5 Backlight Information Absolute Maximum ratings 25 ____ 80 50 v ReverseCurent k fu Absolute maximum forward Current im 180 m
5. YES RETURN GG24064A3 02WAO0 A00 Page 19 of 27 idLCd 12 2 7 Data read write 1000 _DataReadandincrement ADP 2 1100010 Data Read and NonvariableADP This command is used for data write from MPU to external display RAM to MPU Data write read should be executed after setting address by address pointer can be automatically increment or decrement by setting this command Note his command is necessary for each 1 byte data Refer following flow chart Set Address Pointer Example Address pointer 1000H Status check 1 5 1 Dataz seem Address pointer is 1001H END GG24064A3 02WAO0 A00 Page 20 of 27 12 2 8 Screen peek CODE BIN CODE HEX FUNCTION This command is used to transfer displayed 1 byte data to data stack and this 1 byte data can be read from MPU by data access The logical combination data of text and graphic display on LCD screen can be read by this command The status STA6 should be checked just after screen peek command If the address command is not in graphic area this command ignored and status flag is set Refer following flow chart Screen peek start Set address Pointer Status check 1 STAD 1 Screen peek EOH i Status check STAG 0 YES Status check 1 Note This command is available when hardware column number and software
6. as follows MSB LSB s os t9 sm STA6 flag using screen peek copy command SIA7 the condition blink 0 display off 1 normal display Note1 It is necessary to check STAO STA1 at the same time There is a possibility of error operation due to a hardware interrupt Note 2 For most modes STAO are used as a status check Note STA2 STA3 are valid in Auto mode STAO STA1 are invalid Status checking flow b STATUS NO AUTO MODE STATUS 1 5 2 1 Read or 5 1 Write RETURN RETURN Note 4 It is impossible to save status check in the case of command that is MSB 0 To have the delay time cannot be save status check The interrupt of hardware is happened at the end of lines If command of MSBO is sent in this period the command executing is waited The state of waiting is not known without to check status The sending next command or data is disregarded or rewrites data of waiting command GG24064A3 02WAO0 A00 Page 10 of 27 Fi dLed 11 2 Data Set When using the LCM first set the data 1 or 2 data then set the command Procedure for sending a command The case of 1 data b The case of 2 data m EHI Note When sending more than two data the last datum or last two data is valid GG24064A3 02WAO0 00 Page 11 of 27 1
7. column number are the same Hardware column number is related to jumper J1 setting Default CL 32 software column number is related to Set Text Area and Set Graphic Area command GG24064A3 02WAO0 00 Page 21 of 27 12 2 9 Screen copy CODE BIN This command is used to copy displayed 1 line data to graphic area The start point of 1 line data in the screen is determined by the address pointer Note a When the attribute of text is used this command cannot be used because attribute data is in the graphic area b case of 2 screen drive this command cannot be used because T6963c cannot separate upper screen data and lower screen data Refer following flow chart screen copy start Set Address Pointer Screen copy EBH 1 Status check 5 1 2 Status check STAO 121 Note This command is available when hardware column number and software column number are the same Hardware column number is related to jumper J1 setting Default CL 32 software column number is related to Set Text Area and Set Graphic Area command GG24064A3 02WAO0 00 Page 22 of 27 12 2 10 set reset FUNCTION CODE BIN CODE HEX Bito 11110XXX FOH F7H 11111XXX This command is used to set or reset a bit of 1 byte is specified by address pointer Plural bits in the 1 byte data cannot be set reset at a time Bit Set Reset Set Address P
8. 2 User instruction Definitions 12 1 Command Table Command Code BIN Di 02 Function Status Read 5057 Status Reg Setting 00100001 Set Cursor Pointer Set Offset Register Low address address Set Address Pointer Set Control Word 01000001 et te Mode 1000 000 80H 88H 1000 001 81H 89H 10007011 83H 8BH _1000 100 84H 8CH External CG RAM Display 10010000 1001 Cursor on blink off 1001xx11 Cursoron blink on 100101xx 94H graphic 100110xx 98H graphic 100111 9CH graphic Cursor Pattern 1010002 0 1 8Lines CURSOR Height Data Auto 10110000 ___ SetData Auto Write Read Write Honor et Set Data Auto Read 10110010 BH auto operation Data 11000000 COH DATA Data Write and Increment ADP Read Write HESS TCR Data Read and Increment ADP 11000010 C2H DATA Data Write and Decrement ADP 11000011 C3H DataReadand Decrement ADP 11000100 DATA Data Write and Nonvariable ADF 11000101 C5H Data Read and Nonvariable ADP Screen Peek 11100000 EOH
9. CB 180 00 D 176 00 0 30 BACELIGHT 149 40 0 30 FRAME 141 40 0 30 VA 132 00 T0 3 13 50 127 16 M 13 00 240 x 64 DOTS A 423 50 1 0 le A P2 54 10 25 4 Common LCD PANEL 240x64 DOTS Segment Driver X3 Power LED BACKLIGHT ircuit GG24064A3 02WA0_A00 Page 7 of 27 Cd 9 Application circuit 9 1 Interfaces with the 8080 serial MPU The LCM can be directly connected to 8080 serial MCU The LCM can be used with a 8080 serial MPU as shown in the following application circuit 107 51 20K 91 I 9 2 Interfaces with 6800 serial MPU TSV 10V 20K VSS em 7 9 10 12 17 7 15 _ _ _ _ 20 VEE 21 5V 22 0V Es 2 J GG24064A3 02WAO A00 Page 8 of 27 FindLed 10 Timing Characteristics CE tao TWR DO OF WRITE D to OF READ Sumbo Testeonations C10 Setup Time tes o f ns Data Hold Time Oo Output Hold Time GG24064A3 02WA0_A00 Page 9 of 27 11 Flowchart of communications with MPU 11 1 Status Read A status check must be performed before data is read or written Status Check Status of can be read from data lines Data bus RD CE L C D H 00 07 Status word LCM The LCM Status word format is
10. E _ 1 line cursor 2 lines cursor 8 lines cursor 12 2 6 Data auto read write Honoxo _ ext auto operation This command is convenient to send full screen data from external display RAM After setting auto mode data write or read command is not necessary between each data Data auto write or read command should follow the Address pointer set and address pointer is automatically increment by 1 after each data auto reset is necessary to return normal operation because all data is regarded display data and no command can be accepted in the auto mode GG24064A3 02WAO0 A00 Page 18 of 27 indLCd Note A Status check for auto mode STA2 should be checked between each data Auto reset should be performed after checking 5 1 STA2 1 Refer following flow chart eee m Repetition Status check 7 Auto reset 2 STAQ 1 we Set Address data lower 8 bits Set Address data upper 8 bits see Set Address Pointer Send Set Address Pointer command END Status check 1 YES RETURN ee Lao Status check Z Auto reset 5 1 STA3 Repetition Status check 2
11. FindLed LCD Module User Manual Customer Ordering CODE GG24064A3 02WA0 DRAWING NO m GG24064A3 02WA0_A00 Approved By Customer Approved Checked By Prepared By GEMINI Technology Co Ltd ADD 1521 Investel 1123 2 Sanbon Dong Gunpo City Kyeonggi Do Korea TEL 82 31 455 3200 Rep FAX 82 31 343 2100 E mail sales findicd com Http www findicd com GG24064A3 02WA0_A00 Page 1 of 27 Contents 1 Precautions in Use of LCD Module P3 2 General Specification P3 Absolute Maximum Ratings P3 4 Electrical Characteristics P4 5 Backlight Information P4 6 Optical Characteristics P5 7 Interface Description P6 8 Contour Drawing amp Block Diagram P7 9 Application circuit P8 10 Timing Characteristics P9 11 Flowchart of communications with MPU P10 12 User instruction Definitions P12 13 Initializing flow chart
12. Peak torward current imsecpus 10 Duty 240 Powerdissipation mW Operating Temperature Range 30 480 Storage Temperature Range Electrical Optical Characteristics Ta 25 C f 120mA Wavelength Spectral line M Operating Voltage V Forward p nm widthA 0 15V Current mA GG24064A3 02WAO0 00 Page 4 of 27 dL Cd 6 Optical Characteristics Me 5 45 View Angles BllConirast Ratio Brightness at selected state B3 Brightness at non selected date selected state Non seleded state 7 Visual angle direction Brightness 00 e Operating voltage for LCD dwing esponse time Hons lected Condition Selected Condition Nong lected Condition Bnghtness 100 55 Rise Time Decay Time fall time tf GG24064A3 02WAO0 00 Page 5 of 27 7 Interface Description mb i OD HL 9 AED Anode of LED Backlight Noel _ Note1 Only use as Anode of LED Backlight when PIN21 22 floating and jumper JK must be shorted GG24064A3 02WAO0 A00 Page 6 of 27 8 Contour Drawing amp Block Diagram 4 004 0 30 13 30 24 00 X 0 30 54 00 X 0 30 A 39 00t 33 58 85 00 0 0 FRAME 53 00 0 30 F
13. and The display mode doesn t change until this command is sent Logically OR EXOR AND of text and graphic display can be displayed When internal character generator mode is selected character code 7 are selected from built in character generator RM The character code 80H FFH automatically selected from external character generator RAM example GG24064A3 02WAO0 A00 Page 16 of 27 iWdL Cd 00000000 ODOORN 20000400 20000400 20000400 20000400 20000400 00000000 Graphic Text 00000000 PTT TTT Ty TIT iit 20000800 PT TTT lef TIT iit PTT Tt ie TIT titi PT TTT ie 20000400 20000400 00000000 AND EXOR Note Only text display is attributed because attribute data is located in graphic RAM area Attribute function Reverse display Character blink and Inhibit are called Attribute The attribute data is written into the graphic area defined by Control word set command Only text display is possible in Attribute Function mode graphic display is automatically disabled However the Display Mode command must be used to turn both Text and Graphic on in order for the Attribute function to be available The attribute data of the 1st characte
14. aracters and codes 80H to represent the user s own external characters In external CG RAM mode all 256 codes from 00H to FFH can be used to represent the user s own characters The three least significant bits indicate one of the eight rows of eight dots that define the character s shape 0 ADO Offset Register Data 5 bit Character Code 8 bit Line Scan 3 bit The relationship between display RAM address and offset register GG24064A3 02WAO0 A00 Page 13 of 27 iWdL Cd Example 1 Offset register 02H Character code 80H Character generator RAM start address 1400H MSB LSB 0 0 0 1 0 0 0 0 0 0 0 ofo Character generator RAM start address 1400H address data 1400H 1401H 1402H 1403H 1404H 04H 1405H 04H 1406H 04H 1407H 3 Set Address Pointer D1 D2 24H The address point set command is used to indicate the start address for writing to or reading from external RAM 12 2 2 Control word set _ mx mov 9 The home address and column size are defined by this command 1 Text home address set D1 D2 40H The starting address of external display RAM for Text display is defined by this command The text home address shows the left end and most upper position The relationship of external displ
15. ay RAM address and display position TH 0 _____ IHHTA TA 2 TH 2TA TA 1 PTH 1 TA CL TH Text Home address TA Text Area number columns CL Columns are fixed by hardware pin programmable this LCM can be set by jumper J1 When J1 connected to V CL 32 and connected to CL 40 Default CL 32 example Text home address 0000H Text area 0020H CL 32 columns 4 lines GG24064A3 02WA0_A00 Page 14 of 27 FindLed 2 Graphic home address set D1 D2 42H The starting address of external display RAM for Graphic display is defined by this command The graphic home address shows the left end and most upper line The of external display RAM address and display position GH mE T address GA Graphic area number TM CL Columns are fixed by hardware pin programmable this LCM can be set by jumper J1 When J1 connected to 32 connected to G CL 240 Default 1 32 example Graphic home address 0000H Graphic area 0020H CL 32 columns 2 lines 000H 0020H 008FH 0040H 05 006H 007 O07FH 0080H 009FH 00 0 __ __ 00cOH O0DEH 000 00E0OH
16. command and data 2 Display mode set register is cleared no display mode by the hard reset and no display is appeared on LCD panel And just after Display Mode set 9CH written data is display on the LCD GG24064A3 02WAO0 00 Page 24 of 27 iWdL Cd 14 LCD RAM map DOT 0 0 DOT 239 0 DOT 0 63 DOT 239 63 x 1 abit x 30 Line 1 os p os vz o oo 4 os 02 51 00 Line 64 05 p os 5 4 03 n2 n 00 GG24064A3 02WAO0 A00 Page 25 of 27 FindLed 15 Standard Character pattern The relation between character codes and character pattern ROM TYPE 0101 1 eH Ce Oe eed eee J D ELLLLELI LELLELLLLI ELLLLLLLI CLE 414 an 44444 41 mm mmn NENNEN NE es EN 4 u
17. ointer status check Bit set reset 1 GG24064A3 02WA0_A00 Page 23 of 27 Cd 13 Initializing flow chart Initialize of LCM is required for Mode set Control word set after power on Following is the one example of initialize procedure of 240x64 dots display In case of 6x8 dots font FS H ower on ard reset use reset terminal RESET L 1 minimum after VDD gt 4 75V Modest 1 10000000 Control word set Graph ic home position set Graphic home position 000H Number of graphic area set Graphic 40x6 dots Text home position set Text home position 1000H Number of text area set text 40 column Initialize end Data Write Address pointer set address pointer 0000H Data Write graphic Address pointer set address pointer 1000H Data write text Display Mode Set text graphic on Note 00000000 00000000 01000010 00101000 00000000 01000011 00000000 00010000 01000000 00101000 00000000 01000001 00000000 00000000 00100100 01010101 11100000 10101010 11100000 00000000 00010000 00100100 00110100 11000000 00101111 11000000 graphic home address command number of area command text home address command number of area command graphic home address command text home address command 10011100 1 status check should be inserted between all
18. r in text area is written at the 1st 1 byte in graphic area and attribute data of n th character is written at the n th 1 byte in graphic area Attribute function is defined as follows Attribute RAM 1 X X X x d2 dt do 42 di do _______ 0 O normaldisplay 1 0 1 jevesedispay 0 1 1 jmhibtdisplay __ 0 0 0 plinkofnormaldispay __ 1 0 1 pinkofreversedispay O 1 1 jblinkofinhibitdisplay X don t care 12 2 4 Display mode L9 0 100110XX text off graphic on 100101XX text on graphic off 100111XX text on graphic on GG24064A3 02WA0_A00 Page 17 of 27 indLcd Cursor blink on 1 off 0 Cursor display on 1 off 0 Text display 1 off O Graphic display 1 off 0 Note It is necessary to turn on text display and graphic display in following case 1 Combination of text graphic display 2 Attribute function 12 2 5 Cursor pattern select CODE FUNCTION AOH A7H 1 8 line cursor When cursor display is ON this command selects the cursor pattern from 1 line to 8 lines The cursor address is defined by cursor pointer set command LILIEIEIEIEIEIEI LILIEIEIEIEIEIE LILIEIEIEIEIEIE LILIEIEIEIEIEIE LILIEIEIEIEIEIE LILIEIEIEIEIEIE 1 1 1 LILIEIEIEIEIEI
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