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vl-fs-COG-VLGT6566-03 rev.a (COG-VLGT6566-03) jul/2010 page 2 of 18 document revision history document revision from to date description changed by checked by a 2010.07.15 first release. zeng li huang yuan liang
vl-fs-COG-VLGT6566-03 rev.a (COG-VLGT6566-03) jul/2010 page 3 of 18 contents page no. 1. general description 4 2. mechanical specifications 4 3. interface signals 8 4. absolute maximum ratings 9 4.1 electrical maximum ratings - for ic only 9 4.2 environmental condition 9 5. electrical specifications 10 5.1 typical electrical characteristics 10 5.2 timing specification 11 5.3 power on/off sequence 13 6. optical characteristics (for tft panel only) 14 7. tft panel inspection specifications 16 8. remark 18
vl-fs-COG-VLGT6566-03 rev.a (COG-VLGT6566-03) jul/2010 page 4 of 18 varitronix limited specification of lcd module type model no.: COG-VLGT6566-03 1. general description 4.3 tft, 480 x rgb x 272 dots, 16m colors, positiv e, transmissive dot matrix lcd module. viewing angle: 6 oclock. driving ic: himax hx8257-a (cog) tft lcd controll er & driver or equivalent. data interface: parallel rgb interface. logic voltage: 3.0v. white led backlight. touch panel (anti-glare&anti-newton ring). fpc connection. rohs compliance. 2. mechanical specifications the mechanical detail is shown in fig. 1 and sum marized in table 1 below. table 1 parameter specifications unit outline dimensions 105.5(w) x 109.8(h) x 4.5(d) mm viewing area (tp) 98.70(w) x 57.50(h) mm active area (lcd/tp) 95.04(w) x 53.86(h) mm display format 480 x rgb x 272 dots color configuration rgb stripe - color tft 480xrgbx272 dot pitch 0.198(rgb)(w) x 0.198(h) (0.066(w) x 0.198(h)) mm weight approx: 60 gram
vl-fs-COG-VLGT6566-03 rev.a (COG-VLGT6566-03) jul/2010 page 5 of 18 figure 1: module specification
vl-fs-COG-VLGT6566-03 rev.a (COG-VLGT6566-03) jul/2010 page 6 of 18 4.3" tft lcd display 480 x rgb x 272 dots 24 r0~r7, g0~g7, b0~b7 de disp hsync vsync vdd vss 272 'himax' hx8257-a (cog) tft controller & driver 480 x rgb pclk white led backlight vled1+ vled1- touch panel x+ y- x- y+ figure 2: block diagram
vl-fs-COG-VLGT6566-03 rev.a (COG-VLGT6566-03) jul/2010 page 7 of 18 figure 3: reference circuit diagram
vl-fs-COG-VLGT6566-03 rev.a (COG-VLGT6566-03) jul/2010 page 8 of 18 3. interface signals table 2(a): pin assignment pin no. symbol description 1~2 vss ground. 3~4 vdd (vddio,vci) power supply. 5 r0 6 r1 7 r2 8 r3 9 r4 10 r5 11 r6 12 r7 13 g0 14 g1 15 g2 16 g3 17 g4 18 g5 19 g6 20 g7 21 b0 22 b1 23 b2 24 b3 25 b4 26 b5 27 b6 28 b7 digital data input. r7~r0/g7~g0/b7~b0 are used. 29 vss ground. 30 pclk (clk/dotclk) clock signal for data latching in rgb interface. 31 pon (disp) display on/off mode control. internally pulled high . (a) disp=l, standby mode. (b) disp=h, normal display mode. 32 hsync (hs) horizontal sync input in rgb interface. 33 vsync (vs) vertical sync input in rgb interface. 34 de input data enable control in rgb interface. 35 nc no connection.
vl-fs-COG-VLGT6566-03 rev.a (COG-VLGT6566-03) jul/2010 page 9 of 18 table 2(b): pin assignment pin no. symbol description 36 vss ground. 37 y+ up position for touch panel. 38 x- left position for touch panel. 39 y- down position for touch panel. 40 x+ right position for touch panel. 41 vss ground. 42 vled1- cathode of led backlight. 43 vled1+ anode of led backlight. 44~45 nc no connection. 4. absolute maximum ratings 4.1 electrical maximum ratings C for ic only table 3 parameter symbol min. max. unit logic power supply vdd - vss -0.3 +4.0 v note: the modules may be destroyed if they are used beyond the absolute maximum ratings. all voltage values are referenced to vss = 0v. 4.2 environmental condition table 4 operating temperature (topr) storage temperature (tstg) (note 1) item min. max. min. max. remark ambient temperature (ta) -20 c +70 c -30 c +80 c dry humidi ty (note 1) 90% max. rh for ta 40 c < 50% rh for 40 c < ta maximum operating temperature no condensation vibration (iec 68 -2-6) ce lls must be mounted on a suitable connector frequency: 10 ~ 55 hz amplitude: 0.75 mm duration: 20 cycles in each direction. 3 directions shock (iec 68 -2-27) half -sine pulse shape pulse duration: 11 ms peak acceleration: 981 m/s 2 = 100g number of shocks: 3 shocks in 3 mutually perpendicu lar axes. 3 directions note 1: product cannot sustain at extreme storage c onditions for long time.
vl-fs-COG-VLGT6566-03 rev.a (COG-VLGT6566-03) jul/2010 page 10 of 18 5. electrical specifications 5.1 typical electrical characteristics at ta = 25 c, vdd=3.00.1v, vss=0v. table 5 parameter symbol conditions min. typ. max. unit power supply voltage (logic) vdd 2.9 3.0 3.1 v v ih h level 0.8vdd - vdd v input signal voltage v il l level 0 - 0.2vdd v supply current (logic) idd vdd=3.0v - - 30 ma supply voltage of white led backlight vled - 23.1 - v luminance (on the backlight surface) forward current =20 ma @25 c no. of led dies = 7 x 1 = 7 dies 2800 - - cd/m 2 note: do not display the fixed pattern for a long t ime because it may develop image sticking due to the lcd structure. it should change pattern fr equently. if the screen is displayed with fixed pattern, use a screen saver.
vl-fs-COG-VLGT6566-03 rev.a (COG-VLGT6566-03) jul/2010 page 11 of 18 5.2 timing specification 5.2.1 parallel rgb interface timing characteristic s at ta = 25 c, vdd=3.00.1v, vss=0v. table 6 figure 5: parallel rgb interface timing r0~r7, g0~g7, b0~b7 r0~r7, g0~g7, b0~b7
vl-fs-COG-VLGT6566-03 rev.a (COG-VLGT6566-03) jul/2010 page 12 of 18 5.2.3 input setup timing requirement characteristi cs at ta = 25 c, vdd=3.00.1v, vss=0v. table 8 figure 6: input setup timing requirement r0~r7, g0~g7, b0~b7
vl-fs-COG-VLGT6566-03 rev.a (COG-VLGT6566-03) jul/2010 page 13 of 18 5.3 power on/off sequence the hx8257-a has a power on/off sequence contro l function. when disp pin is pulled h, blank data is outputted for 10-frames firs t, from the falling edge of the following vsync sig nal. similarly, when disp is pulled l, 10-frames of bl ank data will be outputted from the falling edge of the following vsync, too. the blank data wo uld be gray level 0 for normally black lc (nbw= h), and be gray level 255 for normally whit e lc (nbw= l). figure 7: power on sequence figure 8: power off sequence
vl-fs-COG-VLGT6566-03 rev.a (COG-VLGT6566-03) jul/2010 page 14 of 18 6. optical characteristics (for tft panel only) table 9: optical specifications (light source: c li ght) specifications items symbol condition min. typ. max. unit note transmittance t% - 6.1 - % contrast ratio cr - 250 - - t r - 5 - ms response time t f - 15 - ms x r 0.590 0.620 0.650 - red y r 0.314 0.344 0.374 - x g 0.276 0.306 0.336 - green y g 0.533 0.563 0.593 - x b 0.103 0.133 0.163 - blue y b 0.119 0.149 0.179 - x w 0.281 0.311 0.341 - chromaticity white y w viewing normal angle q x = q y = 0 0.319 0.349 0.379 - f 1(3 oclock) - 45 - hor. f 2(9 oclock) - 45 - q 2(12 oclock) - 15 - viewing angle ver. q 1(6 oclock) center cr 10 - 35 - deg. all left side data are based on following condition -- 6 oclock ntsc: 50% lc: tn light: c light (machine:bm5a) normal polarizer reference only note 1: definition of contrast ratio (cr): the contrast ratio can be calculated by the followi ng expression. contrast ratio (cr) = l63 / l0 l63: luminance of gray level 63 l0: luminance of gray level 0 cr = cr (5) cr (x) is corresponding to the contrast ratio of th e point x at figure in note 5. note 2: definition of response time (tr, tf): figure 9
vl-fs-COG-VLGT6566-03 rev.a (COG-VLGT6566-03) jul/2010 page 15 of 18 note 3: definition of view angle ( q , f ): figure 10 the above viewing angle is the measuring position with largest contrast ratio; not for good image quality. view direction for good image q uality is 6 oclock. note 4: measurement set-up: the lcd module should be stabilized at a given temp erature for 20 minutes to avoid abrupt temperature change during measuring. in order to st abilize the luminance, the measurement should be executed after lighting backlight for 20 minutes in a windless and dark room. figure 11 note 5: figure 12 photometer (bm - 7a)
vl-fs-COG-VLGT6566-03 rev.a (COG-VLGT6566-03) jul/2010 page 16 of 18 7. tft panel inspection specifications
vl-fs-COG-VLGT6566-03 rev.a (COG-VLGT6566-03) jul/2010 page 17 of 18
vl-fs-COG-VLGT6566-03 rev.a (COG-VLGT6566-03) jul/2010 page 18 of 18 8. remark varitronix limited reserves the right to change thi s specification. tel:(852) 2197-6000 fax:(852) 2343-9 555. url:http://www.varitronix.com - end -

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