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lcd module specification model: LG2401281-BMDWH6V table of contents cover & contents 1 basic specifications 2 absolute maximum ratings 3 electrical characteristics 4 communication with mpu 7 command definitions 11 initialization 23 character generator 24 electro optical characteristics 26 dimensional outline 28 lcd module numbering system 29 precautions for use of lcd module 30 free datasheet http:///
LG2401281-BMDWH6V - 2 - 1. basic specifications 1.1 features display format : 240 x 128 dots lcd mode : stn blue negative transmissive driving method : 1/128 duty, 1/12 bias viewing direction : 6:00 backlight : led, white color outline dimension : 144.0(w) x 104.0(h) x 14.0(t) mm viewing area : 114.0(w) x 64.0(h) mm dot size : 0.40 x 0.40 mm dot pitch : 0.45 x 0.45 mm weight : 190 g controller : t6963c display ram : 32k bytes others : 128 words character generator rom 256 words (max.) character generator ram 6x8 or 8x8 font selectable text, graphic and combination of text/graphic display 1.2 block diagram led backlight segment driver 240 x 128 dots lcd lsi controller converter t6963c dc/dc c/d v out fs ss dd o fg v v v db7 /rst db0 i /wr /rd /ce ledk leda 32k ram to lsi 240 x 3 128 driver common x 2 lcd panel free datasheet http:///
LG2401281-BMDWH6V - 3 - 1.3 terminal functions pin no. symbol level function 1 fg -- frame ground 2 v ss 0v ground 3 v dd +5v power supply for logic 4 v o -- operating voltage for lcd (contrast adjusting) 5 /wr l write signal, active l 6 /rd l read signal, active l 7 /ce l chip enable signal, active l 8 c/d h/l write mode h: command write l: data write read mode h: status read l: data read 9 nc -- no connection 10 /rst l reset signal, active l 11 db0 h/l data bit0 12 db1 h/l data bit1 13 db2 h/l data bit2 14 db3 h/l data bit3 15 db4 h/l data bit4 16 db5 h/l data bit5 17 db6 h/l data bit6 18 db7 h/l data bit7 19 fs h/l font selection h: 6x8 dots l: 8x8 dots 20 v out -15v output voltage for lcd driving 21, 33, 35 leda +5v power supply for led backlight 22, 34, 37 ledk 0v power supply for led backlight 23~32, 36 nc -- no connection free datasheet http:///
LG2401281-BMDWH6V - 4 - 2. absolute maximum ratings item symbol min. max. unit supply voltage(logic) v dd -v ss -0.3 7.0 v supply voltage(lcd) v dd -v o -0.3 28.0 v input voltage v i -0.3 v dd +0.3 v operating temp. topr -20 70 storage temp. tstg -30 80 3. electrical characteristics 3.1 dc characteristics (v dd =5.0v 10%, ta=25) item symbol condition min. typ. max. unit supply voltage (logic) v dd 4.5 5.0 5.5 v supply voltage (lcd drive) v dd -v o -- 18.0 -- v input high voltage v ih v dd -2.2 -- v dd v input low voltage v il 0 -- 0.8 v output high voltage v oh i oh=-0.75ma v dd -0.3 -- v dd v output low voltage v ol i ol=0.75ma 0 -- 0.3 v supply current (logic) i dd v dd =5.0v -- 18.0 25.0 ma free datasheet http:///
LG2401281-BMDWH6V - 5 - 3.2 ac timing chart (v dd =5.0v 10%, ta=25 ) characteristic symbol min. max. unit c/d setup time t cds 100 -- ns c/d hold time t cdh 10 -- ns /ce, /rd, /wr pulse width t ce, t rd, t wr, 80 -- ns data setup time t ds 80 -- ns data hold time t dh 40 -- ns access time t acc -- 150 ns output hold time t oh 10 50 ns db0~db7 ( read ) ( write ) db0~db7 c/d /wr, /rd fig.1 bus read/write timing ce, ds oh t t t dh acc cds t t t rd, t wr t t cdh /ce free datasheet http:///
LG2401281-BMDWH6V - 6 - 3.3 led backlight characteristics (ta=25 ) item symbol condition min. typ. max. unit forward voltage v f 2.9 3.1 3.3 v forward current if vf=3.1v -- 105 -- ma color white 3.4 power supply +5v +5v vr w v o l c m ledk leda out v v ss v dd r w 20k 20k note: 5v voltage for the led backlight should be supplied to pin21 (or pin 33, pin35) and pin22 (or pin34, pin37) terminal of the interface, it should not be supplied to the anode/cathode terminal of the led backlight directly. free datasheet http:///
LG2401281-BMDWH6V - 7 - 4. communication with mpu 4.1 ram map the display ram is built in the module, and display data (text, graphic and cg data) is written to this display ram. the built-in controller t6963c automatically reads the display ram and sends the appropriate data to lcd drivers. the control word set command (text home set, text area set, etc.) defines the ram area which is read by the controller t6963c making the ram map programmable by the user. if more than 1 screen can be stored in the ram. vertical scrolling and paging is easily performed by resetting text home and/or graphic home address. the 32k bytes built-in ram is located at address 0000h ~ 7fffh, and the following is an example of ram mapping. 0000h graphic ram area gh=0000h (0000h ~ 3bffh) * 6 x 8 font=3 screen * 8 x 8 font=4 screen 3c00h attribute ram area text (3c00h ~ 3fffh) for 1024 characters 4000h text ram area th=4000h (4000h ~ 7bffh) * 6 x 8 font=24 screen * 8 x 8 font=32 screen 7c00h cg ram area cg ram offset register (7c00h ~7fffh) for 128 words, set data= 0fh 7fffh 4.2 status read status of the t6963c should be checked between all command and data in order to complete a communication cycle with the mpu. the status can be read from 8 bits data lines (d0 to d7) by setting c/d= h , /rd= l , /wr= h and /ce= l . the t6963c status word format is as follows: msb lsb sta7 sta6 sta5 sta4 sta3 sta2 sta1 sta0 d7 d6 d5 d4 d3 d2 d1 d0 free datasheet http:///
LG2401281-BMDWH6V - 8 - sta0 check command execution capability 0 : disable 1 : enable sta1 check data read/write capability 0 : disable 1 : enable sta2 check auto mode data read capability 0 : disable 1 : enable sta3 check auto mode data write capability 0 : disable 1 : enable sta4 not used sta5 check controller operation capability 0 : disable 1 : enable sta6 error flag. used for screen peek and screen copy commands. 0 : no error 1 : error sta7 check the blink condition 0 : display off 1 : normal display (note 1) it is necessary to check sta0 and sta1 at the same time. (note 2) for most modes sta0/sta1 are used as a status check. (note 3) sta2 and sta3 are used in auto mode. status checking flow status auto mode status sta0=1 sta1=1 return (*1) return no no yes yes (*1) sta2=1(read) or sta3=(write) b) status check 2 a) status check 1 free datasheet http:///
LG2401281-BMDWH6V - 9 - 4.3 setting data when using a command with operand data, first send the data, then send the command. procedure for sending a command send command status check1 data write command write status check1 end send command status check1 data write data write status check1 end status check1 command write sta0,1 sta0,1 2) commnad with 2 bytes data 1) commnad with 1 byte data send command 3) commnad with no data status check1 sta0,1 command write end (note) when sending more than two data, the last datum (or last two data) is valid. free datasheet http:///
LG2401281-BMDWH6V - 10 - 4.4 connection with 8051 family mpu b. application circuit 2 rst p1.0~p1.7 p3.3 p3.2 p3.0 p3.1 8051 8 /rst /ce /rd db0~db7 c/d /wr a0 8051 rst /rd /wr p2.5~p2.7 3 p0.0~p0.7 74ls138 y0 74ls373 8 8 /rst c/d db0~db7 /ce /wr /rd a. application circuit 1 lg2401281 lg2401281 free datasheet http:///
LG2401281-BMDWH6V - 11 - 5. command definitions command code d1 d2 function registers setting 00100001 00100010 00100100 x address data low address y address 00h high address set cursor pointer set offset register set address pointer set control word 01000000 01000001 01000010 01000011 low address columns low address columns high address 00h high address 00h set text home address set text area set graphic home address set graphic area mode set 1000x000 1000x001 1000x011 1000x100 10000xxx 10001xxx -- -- -- -- -- -- -- -- -- -- -- -- or mode exor mode and mode text attribute mode cg rom mode cg ram mode display mode 10010000 1001xx10 1001xx11 100101xx 100110xx 100111xx -- -- -- -- -- -- -- -- -- -- -- -- display off cursor on, blink off cursor on, blink on text on, graphic off text off, graphic on text on, graphic on cursor pattern select 10100000 10100001 10100010 10100011 10100100 10100101 10100110 10100111 -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 1-line cursor 2-line cursor 3-line cursor 4-line cursor 5-line cursor 6-line cursor 7-line cursor 8-line cursor data auto read/ write 10110000 10110001 10110010 -- -- -- -- -- -- set data auto write set data auto read auto reset data read/write 11000000 11000001 11000010 11000011 11000100 11000101 data -- data -- data -- -- -- -- -- -- -- data write and increment adp data read and increment adp data write and decrement adp data read and decrement adp data write and nonvariable adp data read and nonvariable adp screen peek 11100000 -- -- screen peek screen copy 11101000 -- -- screen copy bit set/reset 11110xxx 11111xxx 1111x000 1111x001 1111x010 1111x011 1111x100 1111x101 1111x110 1111x111 bit reset bit set bit 0 (lsb) bit 1 bit 2 bit 3 bit 4 bit 5 bit 6 bit 7 (msb) x : don t care free datasheet http:///
LG2401281-BMDWH6V - 12 - 5.1 set registers code hex. function d1 d2 00100001 21h set cursor pointer x adrs y adrs 00100010 22h set offset register data 00h 00100100 24h set address pointer low adrs high adrs 5.1.1 set cursor pointer the position of the cursor is specified by x adrs and y adrs. the cursor position can only be moved by this command. data read/write from the mpu never changes the cursor pointer. x adrs and y adrs are specified as follows. x adrs: 00h to 4fh, horizontal cursor position counted by character , 6 or 8 dots width. y adrs: 00h to 1fh, vertical cursor position counted by character , 8 dots height. note: please note that the cursor position should be within actual display area. 5.1.2 set offset register the set offset register command is used to determine the character generator ram area. the upper 5 bits in start address of cg area is set as the lower 5 bits of d1, and the upper 3 bits of d1 are neglected. d2 should be 00h. refer to section 7 character generator for details of the cg ram. 5.1.3 set address pointer the set address pointer command is used to indicate the start address for writing/reading data to/from the built-in ram. the flowchart for set address pointer command set address pointer status check1 set address data (lower 8 bit) set address data (upper 8 bit) status check1 end status check1 command write sta0,1 send set address pointer command free datasheet http:///
LG2401281-BMDWH6V - 13 - 5.2 set control word code hex. function d1 d2 00100000 40h set text home address low address high address 00100001 41h set text area columns 00h 00100010 42h set graphic home address low address high address 00100011 43h set graphic area columns 00h the home address of display ram and column size are defined by this command. 5.2.1 set text home address (th) this command defines the starting address of display ram for text display. the data in the text home address (th) is displayed at the home position of display (left end character on 1st row.) 5.2.2 set text area (ta) this command defines the number of columns by d1. text area can be defined independently from the number of characters fixed by hardware setting of controller lsi. the text area is usually defined as the actual number of characters on lcd display, so addressing can be continuous in the text area. the relationship between display ram address and display position (text display) a) for 8x8 font: ta=1eh, 30 characters per row th -- th+1dh th+ta -- th+ta+1dh th+2ta -- th+2ta+1dh -- -- -- th+15ta -- th+15ta+1dh b) for 6x8 font: ta=28h, 40 characters per row th -- th+27h th+ta -- th+ta+27h th+2ta -- th+2ta+27h -- -- -- th+15ta -- th+15ta+27h free datasheet http:///
LG2401281-BMDWH6V - 14 - 5.2.3 set graphic home address (gh) this command defines the starting address of display ram for the graphic display. the data in the graphic home address (gh) is displayed at the home position of display (left end 8 bits in 1st line). when using the attribute function, the graphic home address indicates the starting address of distribute ram area. 5.2.4 graphic address set (ga) this command defines the number of columns by d1. the graphic area can be defined independently from the number of characters fixed by hardware setting of controller lsi. if the graphic area is defined as the actual number of columns on the lcd display, the address in graphic area can be continuous and the ram area can be used without ineffective areas. note that the graphic area will be different for depending on character font settings even if horizontal dot number is the same . the relationship between display ram address and display position (graphic display) a) for 8x8 font: ga=1eh, 30x8=240 dots gh -- gh+1dh gh+ga -- gh+ga+1dh gh+2ga -- gh+2ga+1dh -- -- -- th+127ga -- th+127ga+1dh 8 bits data is as follows: msb lsb d7 d6 d5 d4 d3 d2 d1 d0 b) for 6x8 font: ga=28h, 40x6=240 dots gh -- gh+27h gh+ga -- gh+ga+27h gh+2ga -- gh+2ga+27h -- -- -- th+127ga -- th+127ga+27h 8 bits data is as follows: msb lsb x x d5 d4 d3 d2 d1 d0 x: invalid data free datasheet http:///
LG2401281-BMDWH6V - 15 - 5.3 mode set code function operand 1000x000 logically or of graphic and text display -- 1000x001 logically exor of graphic and text display -- 1000x011 logically and of graphic and text display -- 1000x100 text attribute mode -- 10000xxx cg rom mode -- 10001xxx cg ram mode -- x : don t care mode set command selects character generator (cg rom mode/cg ram mode), and combination of text/graphic display. the display mode does not change until the next command is sent. the logical or, exor, and of text or graphic display can be displayed. cg rom mode: built-in 128 character cg rom (code: 00h - 7fh) and built-in cg ram for 128 characters can be used (code: 80h - ffh). cg ram mode: built-in cg ram for 256 characters (code: 00h - ffh) can be used. when cg rom mode is selected, character code 00h - 7fh is selected from built-in cg rom and character code 80h C ffh is automatically selected from cg ram. (example) "and" graphic text "or" "exor" free datasheet http:///
LG2401281-BMDWH6V - 16 - attribute function attribute operations are reverse display , character blink and inhibit in text display mode. the attribute data is written in the graphic area defined by set control word command (graphic home address set and graphic area set). only text display is possible in attribute function mode, since the attribute data is stored in the graphic ram area, 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 character in text area is written at the 1st byte in graphic area , and attribute data of nth character is written at the nth byte in graphic area . the attribute function is defined as follows. attribute ram 1 byte x x x x d3 d2 d1 d0 x : don t care d3 d2 d1 d0 function 0 0 0 0 normal display 0 1 0 1 reverse display 0 0 1 1 inhibit display 1 0 0 0 blink of normal display 1 1 0 1 blink of reverse display 1 0 1 1 blink of inhibit display free datasheet http:///
LG2401281-BMDWH6V - 17 - 5.4 display mode code function operand 10010000 display off -- 1001xx10 cursor on, blink off -- 1001xx11 cursor on, blink on -- 100101xx text on, graphic off -- 100110xx text off, graphic on -- 100111xx text on, graphic on -- x : don t care 1 0 0 1 d3 d2 d1 d0 d0: cursor blink d0=1: on, d0=0: off d1: cursor display d1=1: on, d1=0: off d2: text display d2=1: on, d2=0: off d3: graphic display d3=1: on, d3=0: off (note) it is necessary to turn on text display and graphic display in the following cases: a) combination of text/graphic display b) attribute function 5.5 cursor pattern select code function operand 10100000 1-line cursor -- 10100001 2-line cursor -- 10100010 3-line cursor -- 10100011 4-line cursor -- 10100100 5-line cursor -- 10100101 6-line cursor -- 10100110 7-line cursor -- 10100111 8-line cursor -- when cursor display is on, this command selects the cursor pattern in the range 1 line to 8 lines. the cursor address is defined by the set cursor pointer command. 2-line cursor 1-line cursor 8-line cursor free datasheet http:///
LG2401281-BMDWH6V - 18 - 5.6 data auto read/write code hex. function operand 10110000 b0h set data auto write -- 10110001 b1h set data auto read -- 10110010 b2h auto mode reset -- this command is convenient to send full screen data, or receive full screen data from built-in ram. after setting auto mode, a data write (or read) command is not need between each data. data auto write (or read) command should follow the address pointer set command. after this command, the address pointer is automatically incremented by +1 after each data. after sending (or receiving) all data, auto mode reset command is necessary to return normal operation because all data is regarded display data and no command can be accepted in the auto mode. (note) status check for auto mode (sta2 or sta3) should be checked between each data. auto reset should be performed after checking sta3=1(or sta2=1). the flowchart for data auto read/write set read start set address pointer auto read b1h data read status check2 end status check 2 auto reset b2h sta0,1 status check1 sta0,1 sta2 sta3 repetition data read set write start set address pointer auto writeb1h data write status check2 status check 2 status check1 data write auto reset b2h end repetition status check 2 status check 2 a) auto read mode b) auto write mode free datasheet http:///
LG2401281-BMDWH6V - 19 - 5.7 data read / write code hex. function operand 11000000 c0h data write and increment adp data 11000001 c1h data read and increment adp -- 11000010 c2h data write and decrement adp data 11000011 c3h data read and decrement adp -- 11000100 c4h data write and nonvariable adp data 11000101 c5h data read and nonvariable adp -- this command is used for writing data from mpu to display ram, and reading data from display ram to mpu. data write/read should be executed after setting address by set address pointer command. the address pointer can be automatically incremented or decremented by using this command. (note) this command is necessary for each 1 byte data. the flowchart for data write data write start set address pointer set write data data write c0h status check 1 end (example) address pointer=1000h aah is written in 1000h address. address pointer is 1001h. status check 1 sta0,1 (example) data=aah free datasheet http:///
LG2401281-BMDWH6V - 20 - 5.8 screen peek code hex. function operand 11100000 e0h screen peek -- this command is used to transfer 1 byte displayed data to data stack, and this 1 byte data can be read from mpu by data read command. so, logical combination data of text and graphic display on lcd screen can be read by this command. status (sta6) should be checked just after screen peek command. if the address determined by set address pointer command is not in graphic ram area, this command is ignored and status flag (sta6) is set. the flowchart for screen peek command screen peek start set address pointer screen peek e0h data access status check 1 end (*) status check sta6=0? status check 1 sta0,1 (*) no yes (note) this command is available when hardware column number and software column number are the same. software column number is related to set text area and set graphic area command. set ta=28h, ga=28h when using this command. free datasheet http:///
LG2401281-BMDWH6V - 21 - 5.9 screen copy code hex. function operand 11101000 e8h screen copy -- this command copies 1 row data displayed on lcd screen to the graphic ram area specified by set address pointer command. start point of 1 row data on the screen is determined by the set address pointer command. if attribute function is being used, this command is not available. status (sta6) should be checked just after this command. if the address determined by set address pointer command is not located in graphic ram area, this command is ignored and status flag (sta6) is set. the flowchart for screen copy command screen copy start set address pointer screen copy e8h end (*) status check sta6=1 (*2) status check sta0=1 status check 1 sta0,1 (*1) yes (*2) yes no no (note) this command is available when hardware column number and software column number are the same. software column number is related to set text area and set graphic area command. set ta=28h, ga=28h when using this command. free datasheet http:///
LG2401281-BMDWH6V - 22 - 5.10 bit set / reset code function operand 11110xxx bit reset -- 11111xxx bit set -- 1111x000 bit 0 (lsb) -- 1111x001 bit 1 -- 1111x010 bit 2 -- 1111x011 bit 3 -- 1111x100 bit 4 -- 1111x101 bit 5 -- 1111x110 bit 6 -- 1111x111 bit 7 (msb) -- x : don t care this command is used to set or reset a bit of the byte specified by the address pointer. only one bit can be set / reset at a time. the flowchart for bit set/reset command bit set / reset set address pointer set write data bit set (reset) status check 1 end status check 1 sta0,1 free datasheet http:///
LG2401281-BMDWH6V - 23 - 6. initialization initialization of controller t6963c is required for mode set , control word set after power on. following is an example of initialization procedure. command c/d d7 d6 d5 d4 d3 d2 d1 d0 note power on power on reset (use reset terminal) /rst= l (1 ms minimum after vcc > 4.75v) mode set 1 1 0 0 0 0 0 0 0 or mode control word set graphic home address set (graphic home address 0000h) 0 0 1 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 graphic home address command number of graphic area set (graphic 30 x 8 dots) 0 0 1 0 0 0 0 0 1 0 0 0 1 0 0 1 0 0 1 0 0 1 0 1 0 0 1 number of graphic area command text home address set (text home address 4000h) 0 0 1 0 0 0 0 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 text home address command number of text area set (text 30 column) 0 0 1 0 0 0 0 0 1 0 0 0 1 0 0 1 0 0 1 0 0 1 0 0 0 0 1 number of text area command (initialization end) (data write) address pointer set (address pointer 0000h) 0 0 1 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 graphic address setting command 0 1 0 1 1 1 0 1 1 0 0 0 1 0 0 0 1 0 data command 0 1 1 1 0 1 1 1 0 0 1 0 0 0 1 0 0 0 data command data write (graphic) -- -- -- -- -- -- -- -- -- address pointer set (address pointer 4000h) 0 0 1 0 0 0 0 1 0 0 0 1 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 text address setting command data write (text) (l) 0 1 0 1 0 1 1 0 0 0 1 0 1 0 1 0 1 0 data command (a) 0 1 0 1 0 1 1 0 0 0 0 0 0 0 0 0 1 0 data command -- -- -- -- -- -- -- -- -- display mode set (text/graphic on) 1 1 0 0 1 1 1 0 0 (note) status check should be inserted between all command and data. free datasheet http:///
LG2401281-BMDWH6V - 24 - 7. character generator 7.1 character generator rom character generator rom for 128 characters is built-in this module. character code map (rom code 0101) 3 7 5 6 4 0 1 2 msb 0 lsb 5 4 3 2 1 9 8 7 6 e d c b a f 7.2 user character generator ram the character generator ram is the built-in ram which can be used as character generator after writing character pattern by program. part of built-in ram can be used as user cg ram for 256 characters by selecting cg ram mode , or for 128 characters by selecting cg rom mode . the upper 5 bits (nnnnn) in start address of user cg ram is defined by registers setting command (set offset register), and following 2048 bytes are defined as user cg ram area when cg ram mode is selected; 1024 bytes (address: nnnnn10000000000 ~nnnnn11111111111) is defined as user cg ram area when cg rom mode is selected. msb lsb ad15 ad14 ad13 ad12 ad11 ad10 ad9 ad8 ad7 ad6 ad5 ad4 ad3 ad2 ad1 ad0 upper 5 bit defined by cg code (8 bit) automatically register setting command ad10=1 for cg rom mode scan for display (set offset register) ad10=0 for cg ram mode free datasheet http:///
LG2401281-BMDWH6V - 25 - relationship between user cg ram address and offset register offset register data cg ram address (start to end) 00h 0000h to 07ffh 01h 0800h to 0fffh 02h 1000h to 17ffh -- -- 0eh 7000h to 77ffh 0fh 7800h to 7fffh character pattern of specified cg code can be written in the pointed address by register setting command (set address pointer). 8 bytes of data should be sent to following 8 bytes of address for 1 character. example: offset register 02h character code 80h character generator ram start address 0001 0100 0000 0000 1 4 0 0 h character pattern can be displayed by sending cg code with data write command. but set display mode for text display should be selected before using cg. in case that cg rom mode is selected, character pattern is selected from built-in cg rom when msb=0 (00h - 7fh), and from user cg ram when msb=1 (80h-ffh). in case that cg rm mode is selected, all character patterns are selected from user cg ram (00h-ffh). (note) it must be careful so that user cg ram area should not be rewritten by display data, etc. ( address) (data) 1400h 00h 1401h 1fh 1402h 04h 1403h 04h 1404h 04h 1405h 04h 1406h 04h 1407h 00h free datasheet http:///
LG2401281-BMDWH6V - 26 - 8. electro optical characteristics (ta=25 ) item symbol condition min. typ. max. unit note view angle 2- 1 k 3 2 , q =0 =0 , q =0 =0 , q =0 =0 , q =0 note1: definition of viewing angle , f 1 f 2 q x x' y( =180 f q ) =0 q y'( ) =0 z( ) top bottom , f =+90 , f =-90 note2: definition of viewing angle range: 1, 2 f1 viewing angle f2 2.0 k free datasheet http:///
LG2401281-BMDWH6V - 27 - note3: definition of contrast k b1 b2 brightness driving voltage contrast= brightness of selected dot (b2) brightness of non-selected dot (b1) note4: definition of response time b r i g h t n e s s tr 1 0 0 % 9 0 % 1 0 % tf non-selective non-selective state state selective state time free datasheet http:///
LG2401281-BMDWH6V - 28 - 9. dimensional outline free datasheet http:///
LG2401281-BMDWH6V - 29 - 10. lcd module numbering system l g 240 128 1 D b m d w h 6 v D xxx (1) (2) (3) (4) (5) (6) (7) (8) (9) (10) (11) (12) (13) (1) brand (2) module type c - character module g - graphic module (3) display format character module : number of characters per line, two digits xx graphic module : number of columns, tow or three digits xx or xxx (4) display format character module : number of lines, one digit x graphic module : number of rows, two or three digits xx or xxx (5) development number : one digit x ( 1~9, a~z ) (6) lcd mode t - tn positive, gray n - tn negative, blue s - stn positive, yellow-green g - stn positive, gray b - stn negative, blue f - fstn positive, white k - fstn negative, black l - fstn negative, blue (7) polarizer mode r - reflective f - transflective m - transmissive (8) backlight type n - without backlight l - array led d - edge light led e - el c - ccfl (9) backlight color y - yellow-green b - blue w - white g - green a - amber r - red m - multi color nil C without backlight (10) operating temperature range s - standard temperature ( 0 ~ +50 o c ) h - extended temperature ( -20 ~ +70 o c ) (11) viewing direction 3 - 3:00 6 C 6:00 9 C 9:00 u C 12:00 (12) dc-dc converter n or nil C without dc-dc converter v C built in dc-dc converter (13) version code 0~zzz C version code free datasheet http:///
LG2401281-BMDWH6V - 30 - 11. precautions for use of lcd module 11.1 handing precautions 1) the display panel is made of glass. do not subject it to a mechanical shock by dropping it from a high place, etc. 2) if the display panel is damaged and the liquid crystal substance inside it leaks out, be sure not to get any in your mouth. if the substance comes into contact with your skin or clothes, promptly wash it off using soap and water. 3) do not apply excessive force on the surface of display or the adjoining areas of lcd module since this may cause the color tone to vary. 4) the polarizer covering the display surface of the lcd module is soft and easily scratched. handle this polarizer carefully. 5) if the display surface of lcd module becomes contaminated, blow on the surface and gently wipe it with a soft dry cloth. if it is heavily contaminated, moisten cloth with one of the following solvents. isopropyl alcohol ethyl alcohol solvents other than those mentioned above may damage the polarizer. especially, do not use the following: water ketone aromatic solvents 6) when mounting the lcd module make sure that it is free of twisting, warping, and distortion. distortion has great influence upon display quality. also keep the stiffness enough regarding the outer case. 7) be sure to avoid any solvent such as flux for soldering never stick to heat-seal. such solvent on heat-seal may cause connection problem of heat-seal and tab. 8) do not forcibly pull or bend the tab i/o terminals. 9) do not attempt to disassemble or process the lcd module. 10) nc terminal should be open. do not connect anything. 11) if the logic circuit power is off, do not apply the input signals. 12) to prevent destruction of the elements by static electricity, be careful to maintain an optimum work environment. be sure to ground the body when handling the lcd module. tools required for assembly, such as soldering irons, must be properly grounded. to reduce the amount of static electricity generated, do not conduct assembly and other work under dry conditions. the lcd module is coated with a film to protect the display surface. exercise care when peeling off this protective film since static electricity may be generated. 11.2 storage precautions free datasheet http:///
LG2401281-BMDWH6V - 31 - 1) when storing the lcd module, avoid exposure to direct sunlight or to the light of fluorescent lamps and high temperature/high humidity. whenever possible, the lcd module should be stored in the same conditions in which they were shipped from our company. 2) exercise care to minimize corrosion of the electrodes. corrosion of the electrodes is accelerated by water droplets or a current flow in a high humidity environment. 11.3 design precautions 1) the absolute maximum ratings represent the rated value beyond which lcd module can not exceed. when the lcd modules are used in excess of this rated value, their operating characteristics may be adversely affected. 2) to prevent the occurrence of erroneous operation caused by noise, attention must be paid to satisfy vil, vih specification values, including taking the precaution of using signal cables that are short. 3) the liquid crystal display exhibits temperature dependency characteristics. since recognition of the display becomes difficult when the lcd is used outside its designated operating temperature range, be sure to use the lcd within this range. also, keep in mind that the lcd driving voltage levels necessary for clear displays will vary according to temperature. 4) sufficiently notice the mutual noise interference occurred by peripheral devices. 5) to cope with emi, take measures basically on outputting side. 6) if dc is impressed on the liquid crystal display panel, display definition is rapidly deteriorated by the electrochemical reaction that occurs inside the liquid crystal display panel. to eliminate the opportunity of dc impressing, be sure to maintain the ac characteristics of the input signals sent to the lcd module. 11.4 others 1) liquid crystals solidify under low temperatures (below the storage temperature range) leading to defective orientation or the generation of air bubbles (black or white). air bubbles may also be generated if the lcd module is subjected to a strong shock at a low temperature. 2) if the lcd modules have been operating for a long time showing the same display patterns, the display patterns may remain on the screen as ghost images and a slight contrast irregularity may also appear. a normal operating status can be regained by suspending use for some time. it should be noted that this phenomenon does not adversely affect performance reliability. 3) to minimize the performance degradation of the lcd modules resulting from destruction caused by static electricity, etc., exercise care to avoid touching the following sections when handling the module: terminal electrode sections. part of pattern wiring on tab, etc. free datasheet http:///

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