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specification for lcd module model no. TM12864IBCW prepared by: date: checked by : date: verified by : date: approved by: date: tianma microelectronics co., ltd
1/21 revision record date ref. page revision no. revision items check & approval
2/21 1. general specifications: 1.1 display type: stn 1.2 display color*: display color: blue-black background: yellow-green 1.3 polarizer mode: transflective/positive 1.4 viewing angle: 6:00 1.5 driving method: 1/64 duty 1/9 bias 1.6 backlight: led 1.7 controller: t6963c 1.8 data transfer: 8 bit parallel 1.9 operating temperature: -20----+70 storage temperature: -30----+80 1.10 outline dimensions: refer to outline drawing on next page 1.11 dot matrix: 128 x 64 dots 1.12 dot size: 0.39 x 0.55 (mm) 1.13 dot pitch: 0.44 x 0.60(mm) 1.14 weight: about 90g * color tone is slightly changed by temperature and driving voltage.
3/21 2. outline drawing
4/21 3. lcd module part numbering system t m 12864 i b c w temperature range w: wide temperature range backlight type c: transflective, led backlight lcd type b:yellow-green mode stn positive module series module type 5 digits indicating 128 columns x 64 rows t: tianma m: module
5/21 4. circuit block diagram
6/21 5. absolute maximum ratings item symbol min. max. unit remark power supply voltage v cc v ss -0.3 6.0 lcd driving voltage v lcd - 25.0 v operating temperature range t op -20 +70 storage temperature range t st -30 +80 no condensation

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8/21 6.2 interface signals pin no. symbol level description 1 fg 0v frame ground 2 gnd 0v ground 3v cc 5.0v power supply voltage for logic and lcd(+) 4v o -4.5v operating voltage for lcd(-) 5 /wr h/l write enable signal (active at low) 6 /rd h/l read enable signal (active at low) 7 /ce h/l chip enable signal (active at low) 8 c/d h/l data type (h: instruction; l: data) 9 /rst h/l reset signal (active at low) 10 db0 h/l data bit0 11 db1 h/l data bit1 12 db2 h/l data bit2 13 db3 h/l data bit3 14 db4 h/l data bit4 15 db5 h/l data bit5 16 db6 h/l data bit6 17 db7 h/l data bit7 18 fs h/l font selection 19 led+ 4.2v backlight power supply 20 led- 0v backlight power supply
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12/21 7. optical characteristics 7.1 optical characteristics ta=25 item symbol condition min. typ. max. unit x y =0 -30 -- 20 viewing angle y c r x =0 -30 -- 30 deg contrast ratio c r x =0 y =0 3.0 - - turn on t on - - 300 response time turn off t off x =0 y =0 - - 300 ms
13/21 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: 64hz 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: 9.5v ; 2) frame frequency: 64hz
14/21 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 80 240h 2 low temperature storage endurance test applying the low storage temperature for a long time -30 240h 3 high temperature operation endurance test applying the electric stress (voltage current) and the thermal stress to the element for a long time 70 240h 4 low temperature operation endurance test applying the electric stress under low temperature for a long time -20 240h 5 high temperature /humidity storage endurance test applying the high temperature and high humidity storage for a long time 60 95%rh 240h 6 temperature cycle endurance test applying the low and high temperature cycle -30 25 80 25 30min 5min 30min 5min 1 cycle -30 /80 10 cycles 7 vibration test (package state) endurance test applying the vibration during transportation 10hz~500hz, 100m/s 2 , 120min 8 shock test (package state) endurance test applying the shock during transportation half- sine wave, 300m/s 2 , 18ms 9 atmospheric pressure test endurance test applying the atmospheric pressure during transportation by air 25kpa 16h
15/21 8.2 failure judgment criterion test item no. criterion item 123456789 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
16/21 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
17/21 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.
18/21 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.
19/21 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
20/21 appendix b inspection items and criteria for display defects items contents criteria 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
21/21 appendix b inspection items and criteria for display defects (continued) items content criteria 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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