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specification for lcd module model no. tm12864n bc g prepared by: date: checked by : date: verified by : date: approved by: date: tianma microelectronics co., ltd
1/22 revision record date ref. page revision no. revision items check & approval
2/22 1. general specifications: 1 . 1 d isplay t y pe: stn 1.2 display color*: display color: blue-black background: ye ll ow - gr een 1 . 3 polarizer m ode: t ra ns flective/positive 1.4 viewing angle: 6:00 1 . 5 d r iving method: 1/65 d uty 1/9 bias 1 . 6 b acklight : ye ll ow - gr ee n le d s 1.7 controller: s6b0724 1.8 data transfer: serial 1.9 operating temperature: 0----+50 storage temperature: -20----+60 1.10 outline dimensions: refer to outline drawing on next page 1.11 dot matrix: 128 x64 1.12 dot size: 0.39x0.39(mm) 1.13 dot pitch: 0.43x0.43 (mm) 1.14 weight: 20g * color tone is slightly changed by te m p erature , ba ck li gh t , and driving voltage.

4/21 3. lcd module part numbering system t m 12864 n b c g g:cog backlight type c : tr a n s flective le d lcd type b : ye ll ow - gr een stn/positive module series module type 5 digits indicating number 128x64 dots t: tianma m: module
5/22 4 circuit block diagram
6/22 5 absolute maximum ratings item symbol min. max. unit remark power supply voltage v dd v ss 2.4 3.6 lcd driving voltage v lcd 4.5 15.0 v operating temperature range t op 0 +50 storage temperature range t st -20 +60 no condensation
7/22 6 electrical specifications and instruction code 6.1 electrical characteristics item symbol min. typ. max. unit supply voltage (logic) v dd v ss 2.4 3.0 3.6 v supply voltage (lcd drive) v lcd - 9.0 - v high v ih v dd =3.0 0.8v dd - v dd v input signal voltage low v il v dd =3.0 0 - 0.2 v dd v supply current (logic) i dd (v dd - v ss =3.0v) - - 200 ua
8/22 6.2 interface signals pin no. symbol level description 1 nc - no connection 2 v4 - power supply voltage for lcd 3 v3 - power supply voltage for lcd 4 v2 - power supply voltage for lcd 5 v1 - power supply voltage for lcd 6 v0 9.0v power supply voltage for lcd 7 c2- - capacitor pin for voltage converter 8 c2+ - capacitor pin for voltage converter 9 c1+ - capacitor pin for voltage converter 10 c1- - capacitor pin for voltage converter 11 c3+ - capacitor pin for voltage converter 12 vout - dc/dc voltage converter output 13 vss 0v ground 14 vdd 3.0v power supply voltage for logic 15 si h/l serial data input pin 16 scl h/l serial clock input pin 17 rs h/l register select input pin 18 /res h/l reset input pin 19 /cs1 h/l chip select input pin 20 nc - no connection
9/22 6.3 interface timing chart serial interface characteristics db7 (sid) db6 (sclk) rs cs1b (cs2 = 1) t dhs t dss t whs 0.9v dd 0.1v dd t wls t cys t ahs t ass t chs t css serial interface characteristics (v dd = 2.4 to 3.6 v, ta = -40 to +85 c) item signal symbol min. typ . max. unit remark serial clock cycle sclk high pulse width sclk low pulse width db6 (sclk) t cys t whs t wls 250 100 100 - - - - - - ns address setup time address hold time rs t ass t ahs 150 150 - - - - ns data setup time data hold time db7 (sid) t dss t dhs 100 100 - - - - ns cs1b setup time cs1b hold time cs1b t css t chs 150 150 - - - - ns
10/22 6.4 instruction code instruction description instruction table : don't care instruction rs rw db7 db6 db5 db4 db3 db2 db1 db0 description display on / off 0 0 1 0 1 0 1 1 1 d on turn on/off lcd panel when d on = 0: display off when d on = 1: display on initial display line 0 0 0 1 s t 5 s t 4 s t 3 s t 2 s t 1 s t 0 specify ddram line for com0 set page address 0 0 1 0 1 1 p3 p2 p1 p0 set page address set column address msb 0 0 0 0 0 1 y7 y6 y5 y4 set column address msb set column address lsb 0 0 0 0 0 0 y3 y2 y1 y0 set column address lsb read status 0 1 busy adc on /off res etb 0 0 0 0 read the internal status write display data 1 0 write data write data into ddram read display data 1 1 read data read data from ddram adc select 0 0 1 0 1 0 0 0 0 adc select seg output direction when adc = 0 : normal direction (seg0 ? seg131) when a dc = 1 : reverse direction (seg131 ? seg0) reverse display on / off 0 0 1 0 1 0 0 1 1 rev select normal / reverse display when rev = 0 : normal display when rev = 1 : reverse display entire display on / off 0 0 1 0 1 0 0 1 0 eon select normal/entire display on when eon = 0 : normal display. when eon = 1 : entire display on lcd bias select 0 0 1 0 1 0 0 0 1 bias select lcd bias set modify-read 0 0 1 1 1 0 0 0 0 0 set modify-read mode reset modify-read 0 0 1 1 1 0 1 1 1 0 release modify-read mode reset 0 0 1 1 1 0 0 0 1 0 initialize the internal functions shl select 0 0 1 1 0 0 shl select com output direction when shl = 0 : normal direction (com0 ? com63) when shl = 1: reverse direction (com63 ? com0) power control 0 0 0 0 1 0 1 vc vr vf control power circuit operation regulator resistor select 0 0 0 0 1 0 0 r2 r1 r0 select internal resistance ratio of the regulator resistor set r eference v oltage m ode 0 0 1 0 0 0 0 0 0 1 set r eference v oltage m ode set r eference v oltage r egister 0 0 s v5 s v4 s v3 s v2 s v1 s v0 set r eference v oltage r egister set static indicator mode 0 0 1 0 1 0 1 1 0 sm set static indicator mode set static indicator register 0 0 s1 s0 set static indicator register power s ave - - - - - - - - - - compound instruction of display off and entire display on
11/22 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 2 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
12/22 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: 9.0v 2) frame frequency: 64hz
13/22 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
14/22 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
15/22 9 quality level inspection examination or test at t a =25 (unless otherwise stated) min. max. unit il aql external visual inspection under normal illumination and eyesight condition, the distance between eyes and lcd is 25cm. see appendix a ii major 1.0 minor 2.5 display defects under normal illumination 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
16/22 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.
17/22 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.
18/22 appendix a inspection items and criteria for appearance defects items contents criteria protective glue no clear defects cover tape covering all of the chip and no clear crimple 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
19/22 appendix a inspection item and criteria for appearance defects (continued) items contents criteria a b c 3mm w/5 t / 2 cracks on pads 2mm w/5 t/2 20/22 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
21/22 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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