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date : 200 8/11/20 2 record of revision revision date page contents editor 2006/11/20 -- new release tom
date : 200 8/11/20 3 1 features (1) display format : 320 240 dot-matrix, 1/240 duty. (2) construction : fstn lcd, tab type lcd driver, white edge led backlight, and pcb. (3) display type : fstn ,transflective , 6 o?clock view. (4) controller : ra8835. (5) new driving method cmos lcd driver for low power consumption driving. (6) 5v or 3.3v single power input. built-in specific power supplie s circuit for lcd driving. ultra low power consumption. (7) normal temperature type. (8) landscape (default) or portrait display type selectable by jumper setting. (9) 80 (default) or 68 family mpu selectable by jumper setting (10) rohs compliant. 2 mechanical data parameter stand value unit dot size 0.225(w) 0.225(h) mm dot pitch 0.24(w) 0.24(h) mm viewing area 81.8 (w) 62.0 (h) mm module size 92.2(w) 73.0(h) 6.4 max (t) mm 3 absolute maximum ratings parameter symbol min max unit logic circuit supply voltage vdd-vss -0.3 7.0 v lcd driving voltage -- -0.3 26.0 v input voltage v i -0.3 vdd+0.3 v operating temp. t op 0 50 c normal temp. type storage temp. t stg -20 70 c
date : 200 8/11/20 4 4 electro-optical characteristics parameter symbol condition min typ max unit note ----- electronic char acteristics ----- logic circuit supply voltage vdd-vss -- 2.6 3.3 5.5 v lcd driving voltage vctl 25 c 0.4 0.45 0.56 v please keep vctl between 0.35~1.2v(vcc=3.3 v) please keep vctl >0.35 (vcc=5v) vih -- 0.7 vdd -- vdd v input voltage vil -- vss -- 0.3 vdd v logic supply current icc vcc = 3.3v -- 20 -- ma ----- optical characteristics ----- contrast cr fstn type 6 note 1 rise time tr 25 c -- 180 270 ms fall time tf 25 c -- 390 580 ms note 2 f -- 38 -- b -- 30 -- l -- 35 -- viewing angle range r 25 c & cr 2 -- 35 -- deg. note 3 frame frequency ff 25 c -- 70 -- hz ----- white led back-light characteristics ----- parameter symbol condition min typ max unit note forward current if -- -- 90 120 ma note 4 lcm luminous intensity (full white pattern) if=90ma -- 10 -- -- note 4 forward voltage vf if=90ma -- 3.2 3.5 v note 5 led c.i.e x if=90ma 0.26 0.30 0.36 y if=90ma 0.24 0.31 0.36 note 6 note 4: luminous intensity is deci ded by forward current of white led. note 5: white leds are with voltage tolerance. note 6: white leds are with color tolerance.
date : 200 8/11/20 5 (note 1) contrast ratio : cr = (brightness in off state) / (brightness in on state) ( note 2 ) response time : (note 3) viewing angle * led dice number = 6
date : 200 8/11/20 6 5 block diagram com. driver lcd panel 320 x 240 dots seg. driver 320 240 cp,d0~d3 lp, m, ydis flm controller ra8835 sra m /reset /rd /wr /cs a0 db0~7 from mpu * please use the ydis pin and the inner comman d of the ra8835 to control display on/off. power supply example lcd module vss vctl vr 0 v vcc lcd power circuit new driving method lcd driver 22.9v note: vctl is about 0.4v
date : 200 8/11/20 7 white led backlight a k 3.2v / 90ma 6 interface definition pin no. signal level function 1 /reset h/l reset signal 2 /rd h/l 80 series: read signal 68 series: enable signal(e) 3 /wr h/l 80 series: write signal 68 series: r/w signal 4 /cs h/l chip select signal 5 a0 h/l data type selection 6 ~ 13 db0~db7 h/l data input(8 bits) 14 vdd - power supply for logic(+3.3v) 15 vss - power supply(ground : 0v) 16 vctl - contrast adjustment input 17~22 nc - no connection 23 a - led anode 24 k led cathode
date : 200 8/11/20 8 7 timing characteristics 7.1 8080 family interface timing parameter condition symbol min max unit remark address hold time tah8 10 ns address setup time taw8 0 ns a0,/cs system cycle time tcyc note ns strobe pulse width toc 150 ns /wr,/rd data setup time tds8 120 ns data hold time tdh8 5 ns /rd access time tacc8 - 80 ns output disable time cl=100 pf vdd=2.7~4.5 toh8 10 55 ns db0~db7 note: for memory control and system control commands: tcyc8=2tc+toc+tcea+75 > tacv +245 for all other commands: tcyc8=4tc+toc+30 a0,/cs /wr,/rd db0~db7 (write) db0~db7 ( read )
date : 200 8/11/20 9 7.2 6800 family interface timing parameter condition symbol min max unit remark system cycle time tcyc6 note ns address setup time taw6 10 ns address hold time tah6 0 ns a0,/cs, r/w data setup time tds6 120 ns data hold time tdh6 0 ns output disable time toh6 10 75 ns access time tacc6 - 130 ns db0~db7 enable pulse width cl=100 pf vdd=2.7~4.5 tew 150 - ns e note: for memory control and system control commands: tcyc6=2tc+tew+tcea+75 > tacv +245 for all other commands: tcyc6=4tc+tew+30 ac electrical characteristics e r/ w a0, /cs db0~db7 ( write ) db0~db7 ( read )
date : 200 8/11/20 10 8 instruction set code command read parameters class command /rd /wr a0 d7 d6 d5 d4 d3 d2 d1 d0 hex command description number of byters section system set 1 01 0 1 00000040in itialized device and display 8 8.2.1 system control sleep in 1 01 0 1 01001153enter sta ndby mode 0 8.2.2 disp on/off 1 01 0 1 01100d 58, 59 enable and disable display and dis p la y flashin g 1 8.3.1 scroll 1 01 0 1 00010044 set display start address and dis p la y re g ions 10 8.3.2 csrform 1 01 0 1 0111015dset cursor byte 2 8.3.3 cgram addr. 1 01 0 1 0111005c set start address of character g enerator ram 2 8.3.6 csrdir 1 01 0 1 0011 cd 1 cd 0 4c to 4f set direction of cursor movement 0 8.3.4 hdot scr 1 0 1 0 1 0 1 1 1 0 5a set hor izontal scroll position 1 8.3.7 display control ovlay 1 01 0 1 0110115bset display overlay format 1 8.3.5 csrw 1 01 0 1 00011046set cursor address 2 8.4.1 drawing control csrr 1 01 0 1 00011147read cursor address 2 8.4.2 mwrite 1 01 0 1 00001042write to display memory - 8.5.1 memory control mread 1 01 0 1 00001143read from display memory - 8.5.2 note: 1. in general, the internal registers of the ra8835 are modified as each command parameter is input. however, the microprocessor does not have to set all the parameters of a command and may send a new command before all parameters have been input. the internal registers for the parameters that have been input will have been changed but the remaining parameter registers are unchanged. 2 bytes parameters( where two bytes are treated as 1 data item) are handled as following: a. csrw, csrr: each byte is processed individually. the microprocessor may read or write just the low byte of the cursor address. b. system set, scroll, cgram adr. : both pa rameter bytes are processed together. if the command is changed afte r half of the parameter has b een input, the single byte is ignored. 2. apl and aph are 2-byte parameters, but are treated as two 1-byte parameters. 3. please refer to ra8835 lcd controller data book for detail.
date : 200 8/11/20 11 9 inner data format com1 com240 #1 d3 d3 d3 d3 #2 d2 d2 d2 d2 d1 d1 d1 d1 d0 d0 d0 d0 d3 d3 d2 d2 d2 d1 d1 d1 #320 d0 d0 d0 portrait display type (top view)
date : 200 8/11/20 12 seg1 seg320 #1 d3 d2 d1 d0 d3 d2 - d3 d2 d1 d0 #2 d3 d2 d1 d0 d3 d2 d3 d2 d1 d0 #240 d3 d2 d1 d0 d3 d2 d3 d2 d1 d0 landscape display type(top view) * regardless portrait or landscape type, both are 1/240 duty. the only difference is the opposite scan direction on common driver. th e character mode of ra8835 could only be used on landscape type. the character will be mirrored on portrait type. 10 jumper setting item option jumper setting remark portrait pin 1,2 short on jp1&jp2 display type landscape(default) pin 2,3 short on jp1&jp2 80 family (default) pin 1,2 short on jp4 mpu 68 family pin 2,3 short on jp4
date : 200 8/11/20 13 11 quality and reliability 11.1 test conditions tests should be conducted under the following conditions : ambient temperature : 25 5 c humidity : 60 25% rh. 11.2 sampling plan sampling method shall be in accord ance with mil-std-105e , level ii, normal single sampling plan . 11.3 acceptable quality level a major defect is defined as one that could cause failure to or materially reduce the usability of the unit for its inte nded purpose. a minor defect is one that does not materially reduce the usability of the unit for its intended pu rpose or is an infringement from established standards and has no significant bear ing on its effective use or operation. 11.4 appearance an appearance test should be conducted by human sight at approximately 30 cm distance from the lcd modul e under flourescent light. the inspection area of lcd panel shall be within the range of following limits.
date : 200 8/11/20 14 11.5 inspection quality criteria item description of defects class of defects acceptable level (%) function short circuit or pattern cut major 0.65 dimension deviation from drawings major 1.5 ave . dia . d area a area b d 0.2 disregard 0.2 0.5 for n = 1 minor 2.5 color uniformity rainbow color or newton ring. minor 2.5 glass scratches obvious visible damage. minor 2.5 contrast ratio see note 1 minor 2.5 response time see note 2 minor 2.5 viewing angle see note 3 minor 2.5 zone a active area zone b viewing area
date : 200 8/11/20 15 11.6 reliability test conditions test item normal temp. type extended temp. type note high temperature operation 50 3 c , t=96 hrs 70 3 c , t=96 hrs low temperature operation 0 3 c , t=96 hrs -20 3 c , t=96 hrs high temperature storage 70 3 c , t=96 hrs 80 3 c , t=96 hrs 1,2 low temperature storage -20 3 c , t=96 hrs -30 3 c , t=96 hrs 1,2 thermal shock test -20 c ~ 25 c ~ 70 c 30 m in. 5 min. 30 min. ( 1 cycle ) total 5 cycle -30 c ~ 25 c ~ 80 c 30 min. 5 min. 30 min. ( 1 cycle ) total 5 cycle 1,2 humidity test 40 c, humidity 90%, 96 hrs 1,2 vibration test (packing) sweep frequency : 10 ~ 55 ~ 10 hz/1min amplitude : 0.75mm test direction : x.y.z/3 axis duration : 30min/each axis 2 note 1 : condensation of water is not permitted on the module. note 2 : the module should be inspected after 1 hour storage in normal conditions (15-35c , 45-65%rh). definitions of life end point : z current drain should be smaller than the specific value. z function of the module should be maintained. z appearance and display quality should not have degraded noticeably. z contrast ratio should be greater than 50% of the initial value.
date : 200 8/11/20 16 12 handling precautions (1) a lcd module is a fragile item and should not be subjected to str ong mechanical shocks. (2) avoid applying pressure to the module surface. this will distort the glass and cause a change in color. (3) under no circumstances should the position of th e bezel tabs or their shape be modified. (4) do not modify the display pcb in eith er shape or positioning of components. (5) do not modify or move location of the zebra or heat seal connectors. (6) the device should only be soldered to during interfacing. modification to other areas of the board should not be carried out. (7) in the event of lcd breakage and resultant leak age of fluid do not inha le, ingest or make contact with the skin. if contact is made rinse immediately. (8) when cleaning the module use a soft damp cloth with a mild solvent, such as isopropyl or ethyl alcohol. the use of water, ketone or aromatic is not permitted. (9) prior to initial power up input signals should not be applied. (10) protect the module against st atic electricity and observe appropriate anti-static precautions.

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