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az displays specifications for liquid crystal display customer approval part no. : atm2412b series (az displays) ver 1.1 approval company chop customer comments az displays engineering approval designed by checked by approved by gu
atm2412b series tft graphic module ver1.1 az displays 1 revision record revision revision date page contents ver1.0 ver1.1 2012-08-29 2013-04-17 5 first issue revise viewing angle
atm2412b series tft graphic module ver1.1 az displays 2 contents 1.0 general specs 2.0 absolute maximum ratings 3.0 electrical characteristics 4.0 optical characteristics 5.0 block diagram 6.0 pin assignment 7.0 power supply 8.0 timing characteristics 9.0 mechanical diagram 10.0 reliability test 11.0 display instruction table 12.0 precaution for using lcm appendix: p/n description
atm2412b series tft graphic module ver1.1 az displays 3 1.0 general specs atm2412b series tft graphic module is an advance d product which adopts tft and fpga technology. it can perfectly replace the old 240*128 stn/fstn graphic module with almost no change on hardware and software. customer can easily get higher contrast, w ider viewing angle, better high/low temperature performance and other features with least cost increasing. 1. display format 240*128 dots 2. power supply lcm 5.0v/3.3v (refer to p/n description in last page) 3. overall module size 144.0mm(w) x 104.0mm(h) x max 10.0mm(d) * 4. viewing area(w*h) 113.5mm(w) x 64.0mm(h) 5. pixel pitch (w*h) 0.462mm(w) x 0.462mm(h) 6. active area(w*h) 110.88mm(w) x 59.136mm(h) 6. viewing direction free viewing angle 7. driving method tft 8. controller ic ra6963 or compatible 9. display mode customized display mode(refer to p/n description) 10. backlight options white led/side 11. operating temperature -20oc ~ 70oc 12. storage temperature -30oc ~ 80oc 13. rohs rohs compliant * doesn't contain connector height 2.0 absolute maximum ratings item symbol min typ max unit operating temperature top -20 -- 70 oc storage temperature tst -30 -- 80 oc input voltage vin vss-0.3 -- vdd+0.3 v supply voltage for logic vdd- vss -0.3 - 7.0 v 3.0 electrical characteristics 3.1 electrical characteristics of lcm item symbol condition min typ max unit power supply voltage vdd 25oc 4.8 5.0 5.2 v 3.0 3.3 3.6 power supply current idd vdd=5.0v -- -- 65 ma vdd=3.3v -- -- 55 input voltage (high) vih pins:( / wr, / rd, / ce, c/d, /reset,db0-db7,fs) 0.8vdd -- vdd v input voltage (low) vil 0 -- 0.2vdd v
atm2412b series tft graphic module ver1.1 az displays 4 3.2 the characteristics of led backlight 3.2.1 electrical-optical ch aracteristics of led backlight (ta=25oc) item symbol condition min typ max unit forward voltage (1)(5) vf -- 3 5 5.5 v forward current (5) if vf = 5v -- 206 -- ma luminance (3) lv vf = 5v 200 250 -- cd/ O uniformity (2) (lvmin/lvmax)% 70% 75% -- - chroma coordinate x vf = 5v 0.26 -- 0.36 - y 0.28 -- 0.38 - lifetime (4) - vf = 5v - 20000 - hours note: (1) forward voltage means voltage applied to pin21 & pin22 (2)the luminance is the average value of 5 points, the measurement instrument is bm-7 luminance colorimeter.the diameter of aperture is 5mm (3) luminance when lcm displaying white color. (4) backlight lifetime means luminance value larger than half of the original after 20000 hours? continuous working. (5) input current of pin 21 might change because the voltage of pin21 will affect the efficiency of backlight driving circuit, but current for leds will keep constant within the range of input voltage. 3.2.2 backlight control circuit for lcm 2x6=12 pcs led 22 :0v b l d r iv in g circuit pin22 is connected to pin2(vss) internally 21 :+3v ~5.5v in 3.2.3 led characteristics curves for single led 1.forward current vs.ambient temperature 25 20 15 10 -30 (ma forward current 5 0 100 ambient temperature 25 05080 45 30 3 2 15 20 0 5 10 forward voltage 25 ) r u z d u g & x u u h q w p $ 2. forward current vs forward voltage
atm2412b series tft graphic module ver1.1 az displays 5 4.0 optical characteristics (ta=25oc) item symbol condition min typ max unit viewing angle (left - right) 2cr 2.0 -80 - 80 deg viewing angle (up-down) 1cr 2.0 -80 - 80 deg contrast ratio ( 1=0 , 2=0 ) cr ft:white,bg:black 400 500 - ft:black,bg:white 400 500 - ft:white,bg:blue 48 60 - ft:black,bg:y-g 320 400 - - response time (rise) tr 1=0 , 2=0 -1020ms response time (fall) tf 1=0 , 2=0 -1530ms (1). definition of optical response time (2). definition of contrast ratio
atm2412b series tft graphic module ver1.1 az displays 6 (3). definition of viewing angle 2and 1 5.0 block diagram
atm2412b series tft graphic module ver1.1 az displays 7 6.0 pin assignment pin no. symbol function i/o 1 fgnd frame ground, connected to vss via a 1m ohms resistor internally p 2 vss power ground p 3 vdd 5v/3.3v p, refer to p/n description 4 d.c. don't care - 5 /wr data write i 6 /rd data read i 7 /ce chip enable i 8 c/d command/data i 9 nc no connection - 10 /reset reset i 11 db0 data bit 0 i/o 12 db1 data bit 1 i/o 13 db2 data bit 2 i/o 14 db3 data bit 3 i/o 15 db4 data bit 4 i/o 16 db5 data bit 5 i/o 17 db6 data bit 6 i/o 18 db7 data bit 7 i/o 19 fs font selecth=6*8dots matrix, l=8*8 dot matrix i 20 d.c. don't care - 21 bl+ power supply for led driving circuit, 5v typical p 22 bl- power ground for led driving circuit, internally connected to vss p
atm2412b series tft graphic module ver1.1 az displays 8 7.0 power supply 8.0 timing characteristics for more details, please refer to ic specification.
atm2412b series tft graphic module ver1.1 az displays 9 9.0 mechanical diagram 1/1 a rev first issued 2012-08-22 3 2 8 7 f e d c b a 6 5 4 3 2 8 7 6 5 4 3 2 cn/date nature of modification ecn no. rev 1 1 sh no 1 f e d c b a unspecified tolerance: 0.2mm dot size 0.462 0.462 22 1 2.5 3.5 3.0 16.9 19.3 15.2 16.6 144.0 0.5(outline) 1.6 0.1 10.0max p2.54*(22-1)=53.34 0.2 15.0 104.0 0.5(outline) 97.0 138.0 11.0 12.5 4.1 0.3 display center 77.0(bezel outline) 64.0(bezel open) 59.136(a.a.) 121.9(bezel outline) 113.5(bezel open) 110.880(a.a.) 4 - ? 3 . 0
atm2412b series tft graphic module ver1.1 az displays 10 10.0 reliability test no t est item d escription t est condition r emark 1 environmental test high temperature storage applying the high storage temperature under no rmal humidity for a long time check normal performance 80 o c 96hrs 2 low temperature storage applying the low storage temperature under normal humidity for a long time check normal performance -30 o c 96hrs 3 high temperature operation apply the electric stress(voltage and current) under high temperature for a long time 70 o c 96hrs note1 4 low temperature operation apply the electric stress under low temperature for a long time -20 o c 96hrs note1 note2 5 high temperature/high humidity storage apply high temperature and high humidity storage for a long time 90% rh 40 o c 96hrs note2 6 temperature cycle apply the low and high temperature cycle -30 o c 25 o c 80 o c 25 o c 30min 10min 30min 10min 1cycle chec k normal p erformance -30 o c/80 o c 10 cycle 7 mechanical test vibration test(package state) applying vibration to product check normal performance freq:10~55~10hz amplitude:0.75mm 1cycle time:1min x.y.z every direction for 15 cycles 8 shock test(package state) applying shock to product check normal performance drop them through 70cm height to strike horizontal plane 9other remark note1:normal operat ions condition (25 o c5 o c). note2:pay attention to keep dewdrop s from the module during this test.
atm2412b series tft graphic module ver1.1 az displays 11 11.0 display instruction table instruction c/ d r d w r d 7 d 6 d 5 d 4 d 3 d 2 d 1 d 0 description status read 1 0 1 s7 s6 s5 s4 n ot us ed s3 s2 s1 s0 s1~s5 0: in operation 1: ready s6 0:no error 1:error s7 0:display off 1:normal display register set 1 1 0 0 0 1 0 0 0 0 1 0 1 0 1 0 0 set cursor pointer setoffsetregister set address pointer controlwordset 110010000 0 0 1 1 0 1 0 1 settexthomeaddress settextarea set graphic home address set graphic area mode set 1 1 0 1 0 0 0 x x x x 0 1 0 0 0 1 x x 0 0 1 0 x x 0 1 1 0 x x or mode exor mode and mode text attribute mode internal cg rom mode external cg ram mode display mode 1 1 0 1 0 0 1 0 x x 0 1 1 0 x x 1 0 1 0 1 1 x x x 0 0 1 x x x 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 1 1 0 1 1 0 0 0 n 2 n 1 n 0 cursor set data auto read /write 1 1 0 1 0 1 1 0 0 0 0 1 0 1 0 set data auto write set data auto read auto reset data read write 1 1 0 1 1 0 0 0 n 2 n 1 n 0 data read/write and adp increment/decrement it should executed after setting address using set address pointer command. screen peek 1 1 0 1 1 1 0 0 0 0 0 screen peek screencopy 11011101000screencopy bit set reset 1 1 0 1 1 1 1 n 3 n 2 1 n 0 bit set data write 0 1 0 write data writes data dbo~db7 from mpu to external display ram. data read 0 0 1 read data reads data db0~db7 from external display ram to mpu. x : invalid for more information please ref er to controller specification.
atm2412b series tft graphic module ver1.1 az displays 12 12.0 precaution for using lcm 1. when design the product with this lcd module, make s ure the viewing angle matches to its purpose of usage. 2. as lcd panel is made of glass substrate, dropping the lcd module or banging it against hard objects may cause cracking or fragmentation. especially at corners and edges. 3. although the polarizer of this lcd module has the anti-glare coating, always be careful not to scratch its surface. use of a plastic cover is recommend ed to protect the surface of polarizer. 4. if the lcd module is stored at below specified temperature, the lc material may freeze and be deteriorated. if it is stored at above specified temperature, the molecul ar orientation of the lc material may change to liquid state and it may not revert to its original state. exces sive temperature and humidit y could cause polarizer peel off or bubble. therefore, the lcd module should alway s be stored within specified temperature range. 5. saliva or water droplets must be wiped off immediately as those may leave stains or cause color changes if remained for a long time. water vapor will cause corrosion of ito electrodes. 6. if the surface of lcd panel needs to be cleaned, wipe it swiftly with cotton or other soft cloth. if it is not still clean enough, blow a breath on the surface and wipe again. 7. the module should be driven according to the specifi ed ratings to avoid malfunction and permanent damage. applying dc voltage cause a rapid deterioration of lc ma terial. make sure to apply alternating waveform by continuous application of the m signal. especially the p ower on/off sequence should be kept to avoid latch- up of driver lsis and dc charge up to lcd panel. 8. mechanical considerations a) lcm are assembled and adjusted with a high degree of precision. avoid excessive shocks and do not make any alterations or modifications. the following should be noted. b) do not tamper in any way with the tabs on the metal frame. c) do not modify the pcb by drilling extra holes, changing its outline, moving its components or modifying its pattern. d) do not touch the elastomer connector; especially insert a backlight panel (for example, el). e) when mounting a lcm makes sure that the pcb is not under any stress such as bending or twisting. elastomer contacts are very delicate and missing pixel s could result from slight dislocation of any of the elements. f) avoid pressing on the metal bezel, otherwise th e elastomer connector could be deformed and lose contact, resulting in missing pixels. 9. static electricity a) operator ware the electrostatics shielded clothes beca use human body may be statically charged if not ware shielded clothes. never touch any of the conductive parts such as the lsi pads; the copper leads on the pcb and the interface terminals with any parts of the human body. b) equipment there is a possibility that the static electricity is charged to the equipment, which has a function of peeling or friction action (ex: conveyer, soldering iron, w orking table). earth the equipment thro ugh proper resistance (electrostatic earth: 1x10 8 ohm). only properly grounded soldering irons should be used. if an electric screwdriver is used, it should be well grounded and shielded from commutator sparks. the normal static prevention measures should be obser ved for work clothes and working benches; for the latter conductive (rubber) mat is recommended. c) floor floor is the important part to drain static electrici ty, which is generated by operators or equipment. there is a possibility that charged static electricity is not properly drained in case of insulating floor. set the electrostatic earth (electrostatic earth: 1x10 8 ohm). d) humidity proper humidity helps in reducing the chance of generat ing electrostatic charges. humidity should be kept over 50%rh. e) transportation/storage the storage materials also need to be anti-static tr eated because there is a pos sibility that the human body or storage materials such as containers may be statically charged by friction or peeling. the modules should be kept in antistatic bags or oth er containers resistant to static for storage. f) soldering solder only to the i/o terminals. use only soldering irons with proper grounding and no leakage. soldering temperature : 280c 10c soldering time: 3 to 4 sec.
atm2412b series tft graphic module ver1.1 az displays 13 use eutectic solder with resin flux fill. if flux is used, the lcd surface should be covered to avoid flux spatters. flux residue should be removed afterwards. g) others the laminator (protective film) is attached on the surface of lcd panel to prevent it from scratches or stains. it should be peeled off slowly using static eliminator. static eliminator should also be installed to the workbench to prevent lcd module from static charge. 10. operation a) driving voltage should be kept within specif ied range; excess voltage shortens display life. b) response time increases wi th decrease in temperature. c) display may turn black or dark blue at temperatures above its operational range; this is (however not pressing on the viewing area) may cause the segments to appear ?fractured?. d) mechanical disturbance durin g operation (such as pressing on the viewing area) may cause the segments to appear ?fractured?. 11. if any fluid leaks out of a damaged glass cell, wash off any human part that comes into contact with soap and water. the toxicity is extremely low but caution should be exercised at all the time. 12. disassembling the lcd module can cause permanent damage and it should be strictly avoided. 13. lcd retains the display pattern when it is applied for long time (image retention). to prevent image retention, do not apply the fixed pattern for a long time. image retention is not a deterioration of lcd. it will be removed after display pattern is changed. 14. do not use any materials, which emit gas from epoxy resin (hardener for amine) and silicone adhesive agent (dealcohol or deoxym) to prevent discoloration of polarizer due to gas. 15. avoid the exposure of the module to the direct sunlight or strong ultraviolet light for a long time. 16.the brightness of lcd module may be affected by the routing of ccfl cables due to leakage to the chassis through coupling effect. the inverter circuit needs to be designed taking the level of leakage current into consideration. thorough evaluation is needed for lcd modu le and inverter built into its host equipment to ensure specified brig htness.
atm2412b series tft graphic module ver1.1 az displays 14 appendix: p/n description no. module p/n vdd font color bg color remark 1 atm2412b-nlw-bfw 5v white blue 2 atm2412b-flw-ffw 5v black white 3 atm2412b-nlw-ffw 5v white black 4 atm2412b-fl-yfw 5v black yellow-green 5 ATM2412B-NLW-BFW-M 3.3v white blue 6 atm2412b-flw-ffw-m 3.3v black white 7 atm2412b-nlw-ffw-m 3.3v white black 8 atm2412b-fl-yfw-m 3.3v black yellow-green 9 atm2412b-flw-xfw 5v can get no.1~ no.4 display mode via the switch on pcb board 10 atm2412b-flw-xfw-m 3.3v 11 customized ... ...

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