LCM SPECIFICATIONS (using) LCM MODE: CHARACTER PRODUCTION CODE: LCM2002A REVISION: ver1.1 DATE: 2004/9/6 010-62168698 62168699 www.qingyun-it.com P.1 of 14
PHYSICAL DATA Item Contents Unit LCD type STN --- LCD duty 1/16 --- LCD bias 1/5 --- Viewing direction 6 --- Module size (W H T) 116.0 37.0 10.0/14.0 (with LED) MAX mm Viewing area (W H) 83.0 18.6 mm Character format 5 7 Dots with Cursor dots Character size 3.2 5.55 mm Character pitch 3.8 x 5.95 mm Dot size (W H) 0.6 0.65 mm Dot pitch (W H) 0.65 0.7 mm EXTERNAL DIMENSIONS BLOCK DIAGRAM 010-62168698 62168699 www.qingyun-it.com P.2 of 14
INTERFACE PIN CONNECTIONS PIN SYMBOL SIGNAL DESCRIPTION 1 VSS Ground(0V) 2 VDD Logic voltage supply (+5.0V) 3 V0 LCD driver voltage input 4 RS Data/Instruction register select 5 R/W Read/Write select 6 E Enable signal 7~14 DB0~DB7 Data bus line 15 A LED backlight anode 16 K LED backlight cathode ABSOLUTE MAXIMUM RATINGS ( Ta = 25 C ) PARAMETER SYMBOL MIN MAX Unit Supply voltage for logic VDD -0.3 7.0 V Supply voltage for LCD VDD - VO -0.3 13.5 V Input voltage VI -0.3 VDD+0.3 V Operating temperature TOP -20 70 C Storage temperature TST -30 80 C ELECTRICAL CHARACTERISTICS ( VDD = +5V±10%, VSS = 0V, Ta = 25 C ) 1.Electro-Optic Characteristics(module unit): ITEM SYMBOL MIN TYP MAX Unit CONDITION Input high voltage V IH 2.2 - VDD V Input low voltage V IL -0.3-0.6 V Output high voltage V OH 2.4 - VDD V Output low voltage V OL - - 0.4 V Frame frequency F f - 84.33 - H Z F OSC =270 KH Z Oscillation frequency F OSC - 270 - KH Z VDD=5V Rf=91k 2% Condition:TEMP=(23 3) No. ITEM SYMBOL MIN TYP MAX Unit CONDITION 1 Supply voltage(logic) VDD-VSS 4.5 5.0 5.5 V 2 Supply current (Logic) IDD 1.23 ma VDD=5V 3 LCD operating voltage VDD-V0 4 Response time 5 Contrast CR 3 6 Viewing angel 4.9 V 0 4.5 4.7 5.0 V 25 4.5 V 50 Ton 176 ms Toff 77 ms 12H 1 54 6H 2 43 3H 3 60 9H 4 60 Deg. (CR 3.0) 010-62168698 62168699 www.qingyun-it.com P.3 of 14
2.Electrical-optical Characteristics(LED unit): ITEM SYMBOL MIN TYP MAX Unit CONDITION Forward Voltage VF 4.2 V IF=180mA Forward Current IF 180 ma Reverse Voltage VR 10 V Reverse Current IR 0.2 ma Power Dissipation PD 1.512 W IF=180 ma Luminous Intensity LV 160 cd/m² IF=180 ma Emission Wavelength P 569 570 572 nm IF=10 ma Spectral Range 30 nm Ta=25 RELIABILITY TEST No. ITEM TEST CONDITION EQUIPMENT TEST RESULT 1 High Temp Storage Temp:70 2 Time:96h Restore:24h Tenny Passed 2 Low Temp Storage Temp:-20 3 ime:96h Restore:24h Tenny Passed 3 High Temp Static drive Temp:50 2 Vop:5V Time:24h Restore:24h Tenny Passed 4 Low Temp Static drive Temp:0 3 Vop:5V Time:24h Restore:24h Tenny Passed 5 High Temp High Hum Storage Temp:40 2 Hum:95%Rh Time:96h Restore:24h Tenny Passed Thermal Shock Temp:( ) 70 6 25-20 30 5 30 5 Tenny Passed 5 Cycles Restore:24h 010-62168698 62168699 www.qingyun-it.com P.4 of 14
TIMING CHARACTERISTICS(VDD=4.5 to 5.5V) Write operation and Read operation ITEM SYMBOL MIN TYP MAX Unit Enable Cycle Time T CYCLE 400 -- -- ns Enable Pulse Width P WEH 150 -- -- ns Enable Rise & Fall Time T ER,T EF -- -- 25 ns Address Set-Up Time T AS 30 -- -- ns Address Hold Time T AH 10 -- -- ns Data Set-Up Time T DSW 40 -- -- ns Data Hold Time T H 10 -- -- ns ITEM SYMBOL MIN TYP MAX Unit Enable Cycle Time T CYCLE 400 -- -- ns Enable Pulse Width P WEH 150 -- -- ns Enable Rise & Fall Time T ER,T EF - -- 25 ns Address Set-Up Time T AS 30 -- -- ns Address Hold Time T AH 10 -- -- ns Data Output Delay Time T DSW - -- 100 ns Data Hold Time T H 20 -- -- ns 010-62168698 62168699 www.qingyun-it.com P.5 of 14
Write Operation: RS R/W T AS T AH T AH P WEH T EF E T ER T DSW T H DB0 DB7 Valid Data T CYCLE Read Operation RS R/W T AS T AH T AH P WEH T EF E T ER DB0 DB7 T DSW T H Valid Data T CYCLE 010-62168698 62168699 www.qingyun-it.com P.6 of 14
INSTRUCTION SETS 1.Instruction Table Instruction Clear Display Return Home Entry Mode Set Display ON/OFF Control Cursor Display Shift Function Set or Set CGRAM Address Set DDRAM Address Read Busy Flag and Address Counter Write Data to RAM Read Data from RAM Instruction Code RS RW DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0 Description 0 0 0 0 0 0 0 0 0 1 Write 20H to DDRM and set DDRAM address to 00H from AC 0 0 0 0 0 0 0 0 1 - Set DDRAM address to 00H from AC and return cursor to its original position if shifted. The contents of DDRAM are not changed. 0 0 0 0 0 0 0 1 I/D S Assign cursor moving direction and enable the shift of entire display 0 0 0 0 0 0 1 D C B Set display(d),cursor (C), and blinking of cursor(b) on/off control bit. 0 0 0 0 0 1 S/C R/L - - Set cursor moving and display shift control bit, and the direction, without changing of DDRAM data. 0 0 0 0 1 DL N F - - Set interface data length(dl:8-bit/4bit), numbers of display line (N:2-line/1line) and,display font type (F:5*10dots/5*8dot) 0 0 0 1 AC5 AC4 AC3 AC2 AC1 AC0 Set CGRAM address in address counter 0 0 1 AC6 AC5 AC4 AC3 AC2 AC1 AC0 Set DDRAM address in counter 0 1 BF AC6 AC5 AC4 AC3 AC2 AC1 AC0 Whether during internal operation or not can be known by reading BF. The contents of address counter can also be read. 1 0 D7 D6 D5 D4 D3 D2 D1 D0 Write data into internal RAM (DDRM/CGRAM). 1 1 D7 D6 D5 D4 D3 D2 D1 D0 Read data from internal RAM (DDRAM/CGRAM). Execution time(fosc= 270kHz) 1.52mS 1.52mS 010-62168698 62168699 www.qingyun-it.com P.7 of 14
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EXAMPLE OF PROGRAME COM EQU 20H ; DAT EQU 21H; RS EQU P3.0; RW EQU P3.4; E EQU P3.6; ; NT1: ORG 0000H LJMP START ORG 100H START: MOV COM,#38H; MOV COM,#01H; MOV COM,#06H; MOV COM,#0CH; INT: MOV R2,#50H ; 80 MOV COM,#80H ; DDRAM AA: MOV DAT,0FFH; ] DJNZ R2,AA MOV COM,#01H; MOV R2,#50H MOV COM,#80H; DDRAM 010-62168698 62168699 www.qingyun-it.com P.10 of 14
BB: MOV DAT,#2AH; DJNZ R2,BB MOV COM,#01H; MOV R2,#50H MOV COM,#80H; DDRAM CC: MOV DAT,#58H; DJNZ R2,CC MOV COM,#01H; MOV COM,#80H; DDRAM MOV DPTR,#TABCR MOV R2,#80 MOV R3,#00H CR_1: MOV A,R3 MOVC A,@A+DPTR MOV DAT,A ; INC R3 DJNZ R2,CR_1 ; ; 010-62168698 62168699 www.qingyun-it.com P.11 of 14
MOV R4,#0FH ROLL1:MOV COM,#18H ; DJNZ R4,ROLL1 lcall delay MOV COM,#01H; MOV COM,#84H; MOV DAT,#0ffH; MOV DAT,#5FH; MOV COM,#8eH; MOV DAT,#0dbH MOV DAT,#5FH MOV COM,#0c4H MOV DAT,#0ffH MOV DAT,#5FH MOV COM,#0ceH MOV DAT,#0dbH MOV DAT,#5FH MOV R4,#08H ROLL: MOV COM,#18H DJNZ R4,ROLL lcall delay JMP NT1 TABCR:DB 'BEIJING QINGYUN CHUANGXIN KEJI FAZHAN YOCHARACTER MATRIX LCD MODULE IS PERFECT' PR1: PUSH ACC CLR RS SETB RW PR11: 010-62168698 62168699 www.qingyun-it.com P.12 of 14
MOV P1,#0FFH ;P1 SETB E MOV A,P1 ; BF AC6-0 CLR E JB ACC.7,PR11 ; BF=1 CLR RW MOV P1,COM ; SETB E CLR E POP ACC RET PR2: PUSH ACC CLR RS SETB RW PR21: MOV P1,#0FFH SETB E MOV A,P1 ; BF AC6-0 CLR E JB ACC.7,PR21 SETB RS CLR RW MOV P1,DAT SETB E CLR E POP ACC RET delay: ; mov r1,#40 del0: mov r2,#50 del1: mov r3,#70 djnz r3,$ djnz r2,del1 010-62168698 62168699 www.qingyun-it.com P.13 of 14
djnz r1,del0 ret ; end 010-62168698 62168699 www.qingyun-it.com P.14 of 14