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displaytech ltd lcd module dt028tft / dt028tft-ts version: 5.0 p1 of 11 displaytech ltd. website: www.displaytech.com.hk lcd module product specification product: 2.8'' tft display module (240rgbx320dots) contents in this document are subject to change wit hout notice. no part of this document may be reproduced or transmitted in any form or by any mea ns, electronic or mechanical, for any purpose, without the express written permission of displayte ch ltd. 6 november 2008.
displaytech ltd lcd module dt028tft / dt028tft-ts version: 5.0 p2 of 11 revision record version changes date 1.0 initial revision 3 august 2007 2.0 whole data sheet was amended 12 nov 2007 3.0 complete new module 9 january 2008 4.0 ic was changed. data updated on: introduction, general specificati ons, mechanical drawing, interface description, absolute maximum ratings, electrical characteristics, and optical characte ristics 11 april 2008 5.0 corrected the lifetime info on page 4. added dt028tft-ts mechanical drawing (p.6) and touch screen pinout connection (p.7) 6 november 2008
displaytech ltd lcd module dt028tft / dt028tft-ts version: 5.0 p3 of 11 table of content 1. introduction --------------------------------------------------- ----------------- page 4 2.general specifications --------------------------------------------------- - page 4 3. mechanical drawing --------------------------------------------------- --- page 5 4. interface description --------------------------------------------------- -- page 7 5. absolute maximum ratings -------------------------------------------- page 8 6. electrical characteristics ------------------------------------------ page 8 7. display controller/power supply timing ----------- ---------- page 8 8. operational emc requirements ------------------------------------- page 9 9. optical characteristics ------------------------------------------------- page 9 10. backlight specification ------------------------------------------------ page 11 11. safety precaution --------------------------------------------------- ------ page 11
displaytech ltd lcd module dt028tft / dt028tft-ts version: 5.0 p4 of 11 1. introduction dt028tft or dt028tft-ts is a display module that contains a tft display with a 320 * 240 rgb resolution. the driver used for this project is the ilitek ili9320 or compatible and can display 262k colors. the driver is mounted on the glass and the interconnection via fpc including components to drive the display module. 2. general s pecifications item specification unit lcd mode transmissive --- 240(rgb) line resolution 320 line 47.00 mm viewing area 60.10 mm 43.20 mm active area 67.60 mm driver ic ili9320 --- interface type system parallel / rgb (1) --- colours 262k --- operation temperature range -20~70 c storage temperature range -30~80 c remarks: (1) serial interface is available, but not recommendable, as the speed of it is very slow. (2) recommended mating connector: hirose fh19sc-45s-0.5sh, fh12s-45s-0.5sh ; or molex 0512964593, 0512964594; or equivalent (3) orientation: both portrait and landscape mode are available (contr olled by software, refer to ic spec) component life cycle 1) storage life: min. 1 year 2) operation life (*1): min. 43 x 103 h (24h per day x 7 days per week x 52 weeks / year x 5 years) (not include backlight) 3) storage and operation life times are defined for a temperatur e of +25c notes: *1. operation life ends when one of the listed faults occurs: the on/off response-times reach 1.5 times of the max. value specif ied for a new display the contrast is reduced to 0.5 of the original contrast value loss of function the number of cosmetic defects exceeds the maximum defined
displaytech ltd lcd module dt028tft / dt028tft-ts version: 5.0 p5 of 11 3. mechanical drawing ? dt028tft 3.drive ic :ili9320 2.storage temperature: -30Xc to 80Xc 1.operating temperature: -20Xc to 70Xc component (1.omax) 6.general tolerance 0.2 4.viewing direction 12:00 notes: ili9320 fmark cs iovcc vcc rd db0 wr/scl rs sdi sdo 29 5 12 11 89 10 7 6 enable dotclk hsync 36 35 im2 reset im3 im1 32 33 34 31 30 pin description 4 3 2 1 im0 28 27 25 26 vci 40 16 gnd 21 24 23 22 20 19 17 18 45 44 43 41 42 ledk1 13 15 14 37 39 38 leda ledk3 ledk2 ledk4 nc nc fpc folded 2.8" tft displaytech ltd dt028tft dt028tft-fpc-a1 0.18 0.18 1 1 (0.70) (1.10) contact stiffener 0.300.03 0.500.08 p0.5x44=22.00(w=0.35) 3.800.3 6.000.5 45 (11.50) 17.700.3 45 10.000.2 r 0 . 3 0 23.000.07 (11.50) 0.900.1 2 - ? 0 . 8 0 4 - ? 0 . 9 0 177 1 20mar08 e dt028tft 5.rohs compliant 49.05 68.25 56.41 0.48 0.50 68.25 main fpc 0.7 max bl fpc 0.9 max 1.570.3 0.60 2.850.2 50.000.2(bl) 69.200.2(bl) (1.90) p0.7x4=2.80(w:0.35) 20.000.3 8.000.5 17.500.5 67.000.2(tft) 240 x rgbx320 57.60(a.a) view direction (12'clock) 43.20(a.a) 48.600.2(cf &tft) 0.90 48.300.2 46.500.1 47.00(v.a) 60.10(v.a) (3.15) 9.500.3 (3.40) (1.50)
displaytech ltd lcd module dt028tft / dt028tft-ts version: 5.0 p6 of 11 mechanical drawing ? dt028tft-ts 3.drive ic :ili9320 2.storage temperature: -20Xc to 70Xc 1.operating temperature: -10Xc to 60Xc 5.rohs compliancy component (1.omax) 6.general tolerance 0.2 4.viewing direction 12:00 notes: fmark cs iovcc vcc rd db0 wr/scl rs sdi sdo 29 5 12 11 89 10 7 6 enable dotclk hsync 36 35 im2 reset im3 im1 32 33 34 31 30 pin description 4 3 2 1 im0 28 27 25 26 vci 40 16 gnd 21 24 23 22 20 19 17 18 45 44 43 41 42 ledk1 13 15 14 37 39 38 leda ledk3 ledk2 ledk4 45 nc nc 1 dt028tft-ts "a" 46.500.1 view direction (12'clock) 240 x rgbx320 p0.7x4=2.80(w:0.35) ili9320 1 177 45 1 dt028tft-fpc-a1 dt028tft displaytech ltd y- y+ x- x+ 1 4 4 1 1 4 x+ p1 p2 y+ p3 p4 y- x- 2.8" tft 49.600.2(tp) 45.50(tp v.a) 43.80(tp a.a) 50.000.2(bl) 43.20(a.a) (0.20) (2.05) (3.10) (3.40) (0.20) 68.800.2(tp) (2.00) (2.85) 59.90(tp v.a) 58.20(tp a.a) 10.000.2 0.900.1 69.200.2(bl) 20.000.5 57.60(a.a) (3.15) 9.500.3 13.500.5 0.500.08 p0.5x44=22.00(w=0.35) r 0 . 3 0 23.000.07 (11.50) 48.300.2 3.800.3 6.000.5 3.350.5 27.000.5 2 - ? 0 . 8 0 0.90 2 - ? 0 . 8 0 0.90 double side tape stiffener 8.000.5 17.500.5 4.100.3 0.60 49.05 68.25 68.25 56.41 0.48 4 - ? 0 . 9 0 main fpc 0.7 max 0.50 protective glue 17.700.3 contact side contact 0.300.05 bl fpc 0.9 max 1.570.3 (11.50) 0.18 0.18 p1.0x3=3.0(w=0.5) 5.000.2 1.00 4.000.30 5.000.30
displaytech ltd lcd module dt028tft / dt028tft-ts version: 5.0 p7 of 11 4. interface description pin no symbol level description 1~4 im0~im3 h/l im3 im2 im1 im0 mpu interface db pin 0 0 1 0 80-system, 16 bit db[10:17], db[1:8] 0 0 1 1 80-system, 8 bit db[10:17] 1 0 1 0 80-system, 18 bit db[0:17] 1 0 1 1 80-system, 9 bit db[9:17] 5 reset h/l reset signal pin 6 vsync --- frame synchronous signal for rgb interface operatio n. low active. 7 hsync --- line synchronous signal for rgb interface operation . low active. 8 dotclk --- dot clock signal for rgb interface operation. the d ata input timing is on the rising edge of dotclk. 9 enable --- data enable signal for rgb interface o peration. 10~27 db17~db0 h/l data bus 28 sdo h/l serial data output (sdo) pin in serial i nterface operation. the data is outputted on the falling edge of the scl signal. 29 sdi h/l serial data input (sdi) pin in serial in terface operation. the data is inputted on the rising edge of the scl signal. 30 rd h/l read strobe signal in 80-system bus inter face operation and enables read operation when rd* is low. 31 wr/scl h/l write strobe signal in 80-system bus interface operation and enables write operation when wr* is low. synchronous clock signal (scl) in serial interface operation. 32 rs h/l register select signal 33 cs h/l chip select signal 34 fmark --- frame head pulse signal, which is used when writing data to the internal ram. 35 iovcc 2.8v logic power supply 36 vcc 2.8v power supply 37 vc1 2.8v liquid crystal analog circuit power sup ply 38 gnd 0v ground 39 leda --- backlight anode 40 ledk1 --- backlight cathode 41 ledk2 --- backlight cathode 42 ledk3 --- backlight cathode 43 ledk4 --- backlight cathode 44~45 nc --- no connection touch screen fpc (only for dt028tft-ts) pin no symbol 1 x+ 2 y+ 3 x- 4 y-
displaytech ltd lcd module dt028tft / dt028tft-ts version: 5.0 p8 of 11 5. absolute maximum ratings item symbol rating unit supply voltage range v cc / iov cc -0.3 to + 4.6 v input voltage range vin -0.3 to vcc + 0.3 v operating ambient temperature t op -20 ~ +70 c operating ambient humidity h op 10 ~ 90 (max 60c) % rh storage temperature t stg -30 ~ +80 c storage humidity h stg 10 ~ 90 (max 60c) % rh 6. electrical characteristics dc characteristics item symbol rating unit power supply v cc 2.7 to 2.9 v input current i dd 18.58 max ma input voltage ?h? v ih 0.8 iov cc to iov cc v input voltage ?l? v il -0.3 to 0.2 iov cc v output voltage ?h? v oh 0.8 iov cc to iov cc v output voltage ?l? v ol 0 to 0.2 iov cc v 7. display controller /power supply timing see display controller specification: ilitek ili9320
displaytech ltd lcd module dt028tft / dt028tft-ts version: 5.0 p9 of 11 8. operational emc r equirements the operational emc immunity requirements and emission limits for displaytech modules are provided in table 1: emc specification for operational modules. table 1. emc specification for operational modules emc phenomena reference standard frequency range level/ limit test specification performance criteria electromagnetic field iec 61000-4-3 30mhz- 1000mhz 3 v/m 1khz sine, 80% am c eft/burst iec 61000-4-4 n.a. 10 v -8us/50us -10ns/100ns c c electrostatic discharge* iec61000-4-2 n.a. 4 kv/ 8 kv contact/ air c conducted rf signals iec 61000-4-6 150khz- 30mhz 1 v 1khz sine, 80% am c radiated emission iec 61000-6-4 30 mhz- 1000mhz 47 dbuv d = 10 m n.a. after a charge of 4kv, the display module is allowed to go down for 2 seconds and need to comeback again. with 8kv the display module is allowed to go down and has to comeba ck after a reset. 9. optical characteristics item symbol condition min typ max unit remark note response time tr + tf --- 36.2 54.3 ms fig 2 4 contrast ratio cr 252 505 --- --- 1 luminance uniformity white 38 93 --- % 3 surface luminance lv =0o ?=0o ta=25oc 179 224 --- cd/m2 2 ?=90o 70 80 --- ?=270o 58 68 --- ?=0o 70 80 --- viewing angle range ?=180o 70 80 --- deg fig 1 6 x 0.560 0.610 0.660 red y 0.292 0.342 0.392 x 0.278 0.328 0.378 green y 0.525 0.575 0.625 x 0.098 0.148 0.198 blue y 0.034 0.084 0.134 x 0.241 0.301 0.361 cie (x,y) chromaticity white y =0o ?=0o ta=25oc 0.245 0.305 0.365 5
displaytech ltd lcd module dt028tft / dt028tft-ts version: 5.0 p10 of 11 note 1: contrast ratio = average surface luminance with all white pixels (p 1 ,p 2 , p 3 ,p 4, p 5 ) average surface luminance with all black pixels (p 1 , p 2 , p 3 ,p 4, p 5 ) note 2: surface luminance is the lcd surface from the sur face with all pixels displaying white. lv = average surface luminance with all white pixels (p 1 , p 2 , p 3 ,p 4, p 5 ) note 3: the uniformity in surface luminance, white is determined by measuring luminance at each tes t position 1 through 5, and then dividing the maximum luminance of 5 po ints luminance by minimum luminance of 5 points luminance. white = minimum surface luminance with all white pixels (p 1 , p 2 , p 3 ,p 4, p 5 ) maximum surface luminance with all white pixels ( p 1 , p 2 , p 3 ,p 4, p 5 ) note 4: response time is the time required for the display to transition from white to black (rise time, tr) and from black to white (decay time, tf). for additional informatio n see fig 2. note 5: cie (x, y) chromaticity: the x,y value is determine d by measuring luminance at each test position 1 through 5,and then taking average value note 6: viewing angle is the angle at which the contrast r atio is greater than 2. for tft module the contrast ratio is greater than 10. the angles are determined for the hori zontal or x axis and the vertical or y axis with respect to the z axis which is normal to the lcd surface. for additional informat ion see fig 1. fig.1 (definition of viewing angle) fig. 2 (the response time is defined as the time interval b etween the 10% and 90% amplitudes. refer to figure be low.)
displaytech ltd lcd module dt028tft / dt028tft-ts version: 5.0 p11 of 11 10. backlight specification item parameter unit color white chromaticity coordinate x=0.283-0.330 y=0.276-0.339 average luminous intensity (lv) 1800 to 2600 (if 60 ma) cd/m 2 no.of led smt 4 --- forward voltage (vf) 3.0 to 3.4 (if 60ma) v 11. safety precaution handling precautions: ? this device is susceptible to electro-static discha rge (esd) damage. observe anti-static precaution s. power supply precautions: ? identify and, at all times, observe absolute maximu m ratings for both logic and lc drivers. no te that there is some variance between models. ? prevent the application of reverse polarity to vcc and gnd, however briefly. ? use a clean power source free from transients. pow er up conditions are occasionally ?jolting? and ma y exceed the maximum ratings of the modules. ? the vcc power of the module should also supply the power to all devices that may access the display. don?t allow the data bus to be driven when the logic supply to the module is turned off. operating precautions: ? do not plug or unplug the module when the system is powered up. ? minimize the cable length between the module and ho st mpu. ? operate the module within the limits of the module s temperature specifications. mechanical/environmental precautions: ? improper soldering is the major cause of module dif ficulty. use of flux cleaner is not recommended as they may seep under the elastomeric connection and cause dis play failure. ? mount the module so that it is free from torque and mechanical stress. ? surface of the lcd panel should not be touched or s cratched. the display front surface is an easily s cratched, plastic polarizer. avoid contact and clean only whe n necessary with soft, absorbent cotton dampened wi th petroleum benzene. ? always employ anti-static procedure while handling the module. ? prevent moisture build-up upon the module and obser ve the environmental constraints for storage temper ature and humidity. ? do not store in direct sunlight ? if leakage of the liquid crystal material should oc cur, avoid contact with this material, particularl y ingestion. if the body or clothing becomes contaminated by the liquid crystal material, wash thoroughly with water and s oap

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