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ver 1.0 specification for lcd module model no. TM402GFF8 prepared by: date: checked by : date: verified by : date: approved by: date: tianma microelectronics co., ltd
1/22 ver 1.0 revision record date ver. ref. page revision no. revision item
2 /22 ver 1.0 1 general specifications: 1.1 display type: stn 1.2 display color* 1 : display color* 2 : white background: bl ue 1.3 polarizer mode: trans missive /negative 1.4 viewing angle: 6:00 1.5 driving method : 1/16 duty 1/5 bias 1.6 backlight: led 1.7 controller: splc780a1 - 01c - c 1. 8 display fonts: 5 x 7 dots +cursor ( 1 character) 1. 9 data transfer: 8 bit parallel 1. 10 operating temperature: 0 ---- + 5 0 storage temperature: - 2 0 ---- + 6 0 1 .11 outline dimensions: refer to outline drawing on next page 1.1 2 dot matrix: 40 characters x 2 lines 1.1 3 dot size: 0.65x0.60(mm) 1.1 4 dot pitch: 0.70x0. 6 5 (mm) 1.1 5 weight: approx 82g * 1 color tone is slightly changed by temperature and driving voltage. * 2 color tone will be changed by backlight.
3 /22 ver 1.0 2 outline drawing
4/22 ver 1.0 3 lcd module part numbering system t m 4 0 2 g f f 8 modification code designator backlight type f: transmissive led backlight lcd type f:bule mode stn negative module series module type 3 digits indicating 40 characters x 2 lines t: tianma m: module
5 /22 ver 1.0 4 circuit block diagram
6/22 ver 1.0 5 absolute maximum ratings item symbol min. max. unit remark power supply voltage v dd v ss -0.3 7.0 lcd driving voltage v lcd -0.3 13.0 v operating temperature range t op 0 +50 storage temperature range t st -20 +60 no condensation
7/22 ver 1.0 6 electrical specifications and instruction code 6.1 electrical characteristics item symbol min. typ. max. unit supply voltage (logic) v dd v ss 4.5 5.0 5.5 v supply voltage (lcd drive) v lcd - 4.7 - v high v ih v dd =5.0 0.7v dd - v dd +0.3 v input signal voltage low v il v dd =5.0 -0.3 - 0.2 v dd v supply current (logic) i dd (v dd - v ss =5.0v) - 1.4 - ma supply current (lcd drive) i ee - 0.85 - ma supply current (led) i led 410.3 ma
8/22 ver 1.0 6.2 interface signals pin no. symbol level description 1 vss 0v ground 2 vcc 5.0v power supply voltage for logic and lcd(+) 3 v o 0.3v power supply voltage for lcd(-) 4 rs h/l selects registers 5 r/w h/l read/write signal 6 e h/l chip enable signal 7 db0 h/l data bit0 8 db1 h/l data bit1 9 db2 h/l data bit2 10 db3 h/l data bit3 11 db4 h/l data bit4 12 db5 h/l data bit5 13 db6 h/l data bit6 14 db7 h/l data bit7 15 led+ 4.2v backlight power supply(+) 16 led- 0v backlight power supply(-)
9 /22 ver 1.0 6 .3 interface timing chart a c ch a r a c t e r i s t i cs ( t a = 25 , vdd = 4.5 to 5.5v ) write mode ( writing data from mpu to splc780a1 ) limit characteristics symbol min. typ. max. unit test condition e cycle time t c 400 - - ns pin e e pulse width t pw 150 - - ns pin e e rise/fall time t r , t f - - 25 ns pin e address setup time t sp1 30 - - ns pins: rs, r/w, e address hold time t hd1 10 - - ns pins: rs, r/w, e data setup time t sp2 40 - - ns pins: db7 ? 0 data hold time t hd2 10 - - ns pins: db7 ? 0 read mode ( reading data from splc780a1 to mpu ) limit characteristics symbol min. typ. max. unit test condition e cycle time t c 400 - - ns pin e e pulse width t w 150 - - ns pin e e rise/fall time t r , t f - - 25 ns pin e address setup time t sp1 30 - - ns pins: rs, r/w,e address hold time t hd1 10 - - ns pins: rs, r/w,e data o utput delay t i m e t d - - 100 ns pin s : db7 - 0 data hold ti m e t hd2 20 - - ns pin db7 - 0
10 /22 ver 1.0 write mode timing diagram ( writing data from mpu to splc780a1 ) rs r / w e db7 - 0 v ih1 v il1 v ih1 v il1 v il1 t sp1 t c valid data v ih1 v il1 v ih1 v il1 v ih1 v il1 v ih1 v il1 v il1 t hd1 t hd1 t f t pw t hd2 t sp2 t r v il1 read mode timing diagram ( reading data from splc780a1 to mpu ) rs r / w e db7 - 0 v ih1 v il1 v ih1 v il1 t sp1 t c valid data v ih1 v il1 v ih1 v il1 v ih1 v il1 v ih1 v il1 t hd1 t hd1 t f t pw t hd2 t r v il1 v ih1 v ih1 t d
11 /22 ver 1.0 6 .4 instruction code 8-bit operation and 8-digit 2-line display (using internal reset) no. instruction display operation power on reset . no display . 1 power on . ( splc780a1 starts initializing ) db7rs r/w db6db5db4db3db2 db1db0 2 function set 0 0 1 1 1 0 x x 0 0 0 0 0 0 1 1 1 0 0 0 set to 8-bit operation and select 2-line display line and 5 x 7 dot character font . display on / off control 3 display on . cursor appear . _ 0 0 0 0 0 1 1 0 0 0 entry mode set 4 increase address by one . it will shift the cursor to the right when writing to the dd ram / cg ram . now the display has no shift . _ 0 1 0 1 0 1 1 1 1 0 write data to cg ram / dd ram 5 write " w " . the cursor is incremented by one and shifted to the right . 0 1 0 0 0 1 0 1 1 0 write data to cg ram / dd ram 7 write " e " . the cursor is incremented by one and shifted to the right . w_ welcome_ 1 1 0 0 0 0 0 0 0 0 set dd ram address 8 it sets dd ram ? s address . the cursor is moved to the beginning position of the 2nd line . welcome _ 0 1 0 1 0 1 0 0 1 0 write data to cg ram / dd ram 9 write " t " . the cursor is incremented by one and shifted to the right . welcome t_ 6 0 1 0 1 0 1 0 0 1 0 write data to cg ram / dd ram write " t " . the cursor is incremented by one and shifted to the right . 10 11 welcome to part_ 0 0 0 0 0 1 1 1 0 0 entry mode set when writing , it sets mode for the display shift . welcome to part_ 12 0 1 0 1 1 0 0 1 1 0 write data to cg ram / dd ram write " y " . the cursor is incremented by one and shifted to the right . 0 0 0 0 0 0 1 0 0 0 return home both the display and the cursor return to the original position ( address 0 ) . 13 14 15 elcome o party_ welcome to party
0000 0001 0010 0011 0100 0101 0110 0111 1000 1001 1010 1011 1100 1101 1110 1111 cg ram ( 1 ) ( 2 ) ( 3 ) ( 4 ) ( 5 ) ( 6 ) ( 7 ) cg ram ( 8 ) cg ram ( 1 ) ( 2 ) ( 3 ) ( 4 ) ( 5 ) ( 6 ) ( 7 ) cg ram ( 8 ) b7- b4 b3 -b0 0000 0010 0011 0100 0101 0110 0111 1010 1011 1100 1101 1110 1111 12 /22 ver 1.0 6.5 character generator rom( splc780a1 - 01 )
13/22 ver 1.0 7 optical characteristics 7.1 optical characteristics ta=25 item symbol condition min. typ. max. unit x y =0 -35 -- 20 viewing angle y c r 2 x =0 -30 -- 30 deg contrast ratio c r x =0 y =0 4.0 - - turn on t on - - 250 response time turn off t off x =0 y =0 - - 250 ms
14/22 ver 1.0 7.2 definition of optical characteristics 7.2.1 definition of viewing angle top top bottom bottom 7.2.2 definition of contrast ratio brightness state selected brightness state unselected = b2/b1 = ratio contrast measuring conditions: 1) ambient temperature: 25 ; 2) frame frequency: 78.1hz 7.2.3 definition of response time turn on time: t on = t d + t r turn off time: t off = t d + t f measuring condition: 1) operating voltage: 4.7v 2) frame frequency: 78.1hz
15/22 ver 1.0 8 reliability 8.1 content of reliability test ta=25 no. test item content of test test condition 1 high temperature storage endurance test applying the high storage temperature for a long time 60 96h 2 low temperature storage endurance test applying the low storage temperature for a long time -20 96h 3 high temperature operation endurance test applying the electric stress (voltage current) and the thermal stress to the element for a long time 50 96h 4 low temperature operation endurance test applying the electric stress under low temperature for a long time 0 96h 5 high temperature /humidity storage endurance test applying the high temperature and high humidity storage for a long time 40 90%rh 96h 6 temperature cycle endurance test applying the low and high temperature cycle -20 25 60 25 30min 5min 30min 5min 1 cycle -20 /60 10 cycles 7 vibration test (package state) endurance test applying the vibration during transportation 10hz~150hz 50m/s 2 40min 8 shock test (package state) endurance test applying the shock during transportation half- sine wave 100m/s 2 , 11ms 9 atmospheric pressure test endurance test applying the atmospheric pressure during transportation by air 40kpa 16h
16/22 ver 1.0 8.2 failure judgment criterion test item no. criterion item 1 2 3 4 5 6 7 8 9 failure judgement criterion basic specification out of the basic specification electrical specification out of the electrical specification mechanical specification out of the mechanical specification optical characteristic out of the optical specification note for test item refer to 8.1 remark basic specification = optical specification + mechanical specification
17/22 ver 1.0 9 quality level inspection examination or test at t a =25 (unless otherwise stated) min. max. unit il aql external visual inspection under normal illumi-nation and eyesight condition, the dis-tance between eyes and lcd is 25cm. see appendix a ii major 1.0 minor 2.5 display defects under normal illumi-nation and eyesight condition, display on inspection. see appendix b ii major 1.0 minor 2.5 note: major defects: open segment or common, short, serious damages, leakage miner defects: others sampling standard conforms to gb2828
18/22 ver 1.0 10 precautions for use of lcd modules 10.1 handling precautions 10.1.1 the display panel is made of glass. do not subject it to a mechanical shock by dropping it from a high place, etc. 10.1.2 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. 10.1.3 do not apply excessive force to the display surface or the adjoining areas since this may cause the color tone to vary. 10.1.4 the polarizer covering the display surface of the lcd module is soft and easily scratched. handle this polarizer carefully. 10.1.5 if the display surface is contaminated, breathe on the surface and gently wipe it with a soft dry cloth. if still not completely clear, 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 10.1.6 do not attempt to disassemble the lcd module. 10.1.7 if the logic circuit power is off, do not apply the input signals. 10.1.8 to prevent destruction of the elements by static electricity, be careful to maintain an optimum work environment. a. be sure to ground the body when handling the lcd modules. b. tools required for assembly, such as soldering irons, must be properly ground. c. to reduce the amount of static electricity generated, do not conduct assembly and other work under dry conditions. d. the lcd module is coated with a film to protect the display surface. be care when peeling off this protective film since static electricity may be generated.
19/22 ver 1.0 10.2 storage precautions 10.2.1 when storing the lcd modules, avoid exposure to direct sunlight or to the light of fluorescent lamps. 10.2.2 the lcd modules should be stored under the storage temperature range. if the lcd modules will be stored for a long time, the recommend condition is: temperature : 0 40 relatively humidity: 80% 10.2.3 the lcd modules should be stored in the room without acid, alkali and harmful gas. 10.3 the lcd modules should be no falling and violent shocking during transportation, and also should avoid excessive press, water, damp and sunshine.
20/22 ver 1.0 appendix a inspection items and criteria for appearance defects items contents criteria leakage not permitted rainbow according to the limit specimen wrong polarizer attachment not permitted not counted max. 3 defects allowed bubble between polarizer and glass <0.3mm 0.3mm 0.5mm polarizer scratches of polarizer according to the limit specimen not counted max. 3 spots allowed x<0.2mm 0.2mm x 0.5mm black spot (in viewing area) x=(a+b)/2 not counted max. 3 lines allowed black line (in viewing area) a<0.02mm 0.02mm a 0.05mm b 2.0mm max. 3 spots (lines) allowed progressive cracks not permitted
21/22 ver 1.0 appendix b inspection items and criteria for display defects items contents critera open segment or open common not permitted short not permitted wrong viewing angle not permitted contrast radio uneven according to the limit specimen crosstalk according to the limit specimen not counted max.3 dots allowed x<0.1mm 0.1mm x 0.2mm x=(a+b)/2 not counted max.2 dots allowed pin holes and cracks in segment (dot) a<0.1mm 0.1mm a 0.2mm d<0.25mm max.3 dots allowed not counted max.3 spots allowed x<0.1mm 0.1mm x 0.2mm black spot (in viewing area) x=(a+b)/2 not counted max.3 lines allowed black line (in viewing area) a<0.02mm 0.02mm a 0.05mm b 0.5mm max.3 spots (lines) allowed
22/22 ver 1.0 appendix b inspection items and criteria for display defects (continued) items content critera not counted max. 2 defects allowed x 0.1mm 0.1mm x 0.2mm x=(a+b)/2 not counted max. 1 defects allowed a 0.1mm 0.1mm a 0.2mm d>0 max.3 defects allowed transfor- mation of segment max.2 defects allowed 0.8w a 1.2w a=measured value of width w=nominal value of width

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