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LM320081 lcd data sheet passive matrix lcd unit features display format: 320 240 overall dimensions: 134 (w) 96 (h) 6.5 (d) mm active area: 100 (w) 76 (h) mm dot pitch: 0.28 (w) 0.28 (h) mm description the sharp LM320081 passive matrix lcd con- sists of 320 240 dots with an fstn, refl ective, positive-type panel. cpu control lsi s d 0 - d 3 lsi5 lsi6 lsi7 lsi1 lsi2 lsi3 lsi4 lcd 320 x 240 dot m generator ic8 cp1 cp2 ram bias voltage generator v dd , v ss , v ee ic9 vr1 vr2 cp1,m 80 80 80 80 e0 e1 e 5023-8 figure 1. LM320081 block diagram lcd data sheet page 1
mechanical specifica tions parameter spe cifications unit note outline dimensions 134 (w) 96 (h) 6.5 max (d) mm 1 active area 100 (w) 76 (h) mm C display format 320 (w) 240 (h) full dot C C dot size 0.28 (w) 0.28 (h) mm C dot spacing 0.02 mm C character color black C2 background color white C2 weight approximately 105 gC notes: 1. excludes the m ounting tab (refer to the outline dimen sions diagram). 2. due to the characteristics of the lc material, the colors vary with environmental temperature. absolute maximum ratings (t a = 25 c) symbol parameter min. max. unit v dd C v ss supply voltage (logic) 06.0 v v dd C v ee supply voltage (lcd driver) 0 28.5 v v in input voltage 0v dd v environmental conditions item tstg topr condition note min. max. min. max. ambient temperature C25 c+60 c0 c +45 c CC humidity CC no condensation 1 vibration CC 3 directions (x/y/z) 2 shock C C 6 directions ( x/ y/ z) 3 notes: 1. t a 40 c, 90% rh maximum. t a >40 c, absolute humidity less than t a = 40 c at 90% rh. 2. these test conditions are in accordance with iec 68-2-6. two hours for each direction of x/y/z (six hours total). frequency 10 hz to 55 hz vibration width 1.5 mm interval 10 hz to 55 hz to 10 hz (1.0 min) 3. acceleration: 490 m/s 2 (50 g) pulse width: 11 ms three times for each direction of x/ y/ z. LM320081 passive matrix lcd unit page 2 lcd data sheet
electrical characteristics (t a = 25 c, v dd = 5.0 v 5%) symbol parameter condition min. typ. max. unit note v dd C v ss supply voltage (logic) C 4.75 5.0 5.25 v C v ee C v ss supply voltage (lcd drive) v dd = 5.0 v C19.5 C18.5 C17.5 v 1 v in input signal voltage h level 0.8 v dd Cv dd vC l level 0 C 0.2 v dd vC i il input leakage current h level CC20 m a C l level C20.0 C C m aC i dd supply current (logic) v dd = 5.0 v, v ee = C18.5 v, v r = 100 k w f = 80 hz C913ma 2 i ee supply current (lcd) C711ma p d lcd power consumption (lcd) C185270mw notes: 1. the viewing a ngle ( q) with optimum contrast is set by adjusting the variable re sistor bet ween vr1 and vr2. refer to figure 6 for the definition of q . 2. refer to the display high frequency pattern in figure 2. v dd (+5 v) lcd unit 5023-1 v ss (gnd) v ee (-18.5 v) vr1 vr vr2 200 k w figure 2. display high frequency pattern passive mat rix lcd unit LM320081 lcd data sheet page 3
interface signals cn1 1 pin number symbol par ameter level 1 s scan startup signal h 2 cp1 input data latch signal h ? l 3 cp2 data input clock signal h ? l 4 v dd power supply for logic and lcd (+5 v) C 5 v ss ground potential (0 v) C 6 v ee power supply for lcd C 7 d 0 display data signal h (on), l (off) 8 d 1 9 d 2 10 d 3 11 vr1 lcd contrast adjust (a) C 12 vr2 lcd contrast adjust (b) C note: 1. connector used: 52103-1217 (molex). mating cable: 1.0 mm pitch, 12 pins f.f.c. note: 1 2 means 1st row 2nd column dot. column row 1 dot 2 dot 3 dot 320 dot 1 dot 2 dot 3 dot 240 dot 240 1 240 320 . 5023-2 . 1 1 1 2 1 3 2 1 2 2 3 1 1 320 . . . . . . . . figure 3. dot chart of display area LM320081 passive matrix lcd unit page 4 lcd data sheet
240 317 1 1 . . . . . . 1 2 1 317 1 2 2 317 240 318 1 1 . . . . . . 1 1 318 2 2 2 318 1 (1 - 320) 1 240 . . (1 - 320) (1 - 320) 1 . d 0 - d 3 cp1 x 240 pulses cp2 x 320/4 pulses cp1 s d 0 d 1 d 2 d 3 s cp2 cp1 5023-3 invalid invalid invalid invalid reduced 240 319 1 1 . . . . . . 1 2 1 319 1 2 2 319 240 320 1 1 . . . . . . 1 1 320 2 2 2 320 1 invalid invalid invalid invalid figure 4. data input timing passive mat rix lcd unit LM320081 lcd data sheet page 5
interface timing ratings symbol parameter min. typ. max. unit t frm frame cycle 12.5 C 14.3 s t cp2 cp2 clock cycle 170 C C ns t cwh h level clock width 100 C C ns t cwl l level clock width 100 C C ns t lw h h level latch clock width 100 C C ns t su data setup time 80 C C ns t h1 data hold time 80 C C ns t s12 cp2 - clock allowance time from cp1 0CCns t s21 cp1 - clock allowance time from cp2 0CCns t r , t f clock rise/fall time CC50ns t ssu s signal data setup time 100 C C ns t sh2 s signal data hold time 100 C C ns LM320081 passive matrix lcd unit page 6 lcd data sheet
t lwh t f t r t s12 t s21 t cp2 t cwl t cwh t su t h1 t ssu t sh2 cp2 x (320/4) pulses cp1 x 240 pulses first line's data transfer second line's data transfer 240th line's data transfer t frm = 12.5 - 14.3 ms reduced notes: 1. v ih = 0.8 v dd 2. v il = 0.2 v dd 5023-4 cp1 cp2 d 0 - d 3 s cp1 s t f t r figure 5. interface timing chart passive mat rix lcd unit LM320081 lcd data sheet page 7
unit driving method circuit configuration figure 1 shows the block diag ram of the units circuitry. display face configuration the display face electrically consists of a signal display segment of 320 240 dots. input data and control signal the lcd driver is 80 bits lsi, consisting of shift registers, latch circui ts, and lcd dri ver circuits. display data which are externally divided into data for each row (320 dots) is sequentially transferred in the form of 4-bit parallel data through shift registers by clock signal cp2 from the left top of the display face. when data of one row (320 dots) have been input, they are latched in the form of parallel data for 320 lines of signal electrodes by latch signal cp1. then the corresponding drive signal is transmi tted to the 320 lines of column electrodes of the lcd panel by the lcd drive circuits. at this time, scan startup signal s is transfe rred from the scan signal driver to the first row of scan electrodes, and the contents of the data signals are displayed on the first rows of the display face accord- ing to the combinations of voltages applied to the scan and signal electrodes of the lcd. while the first rows of data are being displayed, the second rows of data are entered. when 320 dots of data have been transferred, then latched, on the falling edge of cp1 clock, the display face proceeds to the second rows of display. such data input is repeated up to the 240th row of each display segment, from upper to lower rows, to complete one frame of display using the time-sharing method. then data input proceeds to the next display face. scan startup signal s generates scan signal to drive horizontal electrodes. to avoid flickering, drive the unit at 70 C 80 hz/frame. since dc voltage, if applied to the lcd panel, causes a chemical reaction which deteriorates the lcd panel, invert the drive waveform to p revent the generation of such dc voltage. to prevent such a problem, ac waveform circuit generated by counting cp1 (m generator) is built into this ci rcuit. because of the characteristics of the cmos driver lsi, the power consumption of the unit goes up as the operating frequency cp2 increases. thus, the driver lsi applies the system of transferring 4-bit parallel data through the four lines of shift resistors to reduce the data transfer speed cp2. this system minimizes power consumption of the unit. in this circuit configurati on, 4-bit display data are input to data input pins d 0 C d 3 . the lcd unit also adopts a bus line system for data input to minimize the power consumption. in this system, the data input terminal of each driver lsi is activated only when relevant data input is fed. data input for column electrodes of both the upper and the lower display segment and chip select of driver lsi are made as follows: the driver lsi at the left end of the display face is first sel ected, and the adjacent driver lsi of the right side is selected when 80 dots data (20 cp2) is fed. this process continues sequentially until data is fed to the driver lsi at the right end of the display face. this process is immediately followed at the column drivers lsis of both the upper and the lower dis- play segments. thus, data input must be fed through 4-bit bus line sequentially from the left end of the display face. since this graphic display unit contains no refresh ram, it requires data and timing pulse inputs even for static display. the timing chart of input signals is shown in fig- ure 5. LM320081 passive matrix lcd unit page 8 lcd data sheet
optical characteristics (v dd = 5.0 v, t a = 25 c) the following specifications show the optical characteristics when the viewing angle obtaining the maximum contrast ( f ) is adjusted to 0 degrees. the optical characteristics are detected when the lcd applied voltage waveforms are at the highest frequency (the most critical condition for the characteristics of the lcd). symbol parameter con dition min. typ. max. unit note q q 2 C q q 1 viewing angle range f = 0 q q 1 < q q 2 c o 3 3 4.0 60 C C degrees 1 q q 1 c o = 4.0 CCC30 q q 2 25 C C q q 2 C q q 1 f = 90 q q 1 < q q 2 c o 3 3 4.0 65 C C q q 1 c o = 4.0 CCC35 q q 2 25 C C c o contrast ratio q q = 0 , f = 0 8.0 10.0 C C 2 t r response speed C rise q q = 0 , f = 0 C100150 ms 3 t d response speed C decay q q = 0 , f = 0 C150200 ms notes: 1. the viewing a ngle is defined in figure 6. 2. contrast ratio is calculated by using the following formula when the waveform voltage (figure 8) is applied in optical characteristics test method (figure 7): contrast ratio = photodetector output voltage with non - select waveform being applied photodetector output voltage with select waveform being applied 3. the response characteristics of photodetector output are m easured as shown in figure 8, assuming that input sign als are applied to select and deselect the dots to be measured, in the optical characteristics test method shown in figure 7. 5023-5 f = 180 f = 270 f = 90 q 2 3 0 f note: angles q 1 , q 2, and f fall within the range over which the displayed character can be read. q = 0 q 1 <0 viewing direction f = 0 figure 6. definition of viewing angle passive mat rix lcd unit LM320081 lcd data sheet page 9
lcd panel light source polarizer lens viewing sensitivity modulator photodetector (including a viewing sensitivity modulator) 5023-6 normal line reflector q q 0 projector figure 7. optical characteristics test method LM320081 passive matrix lcd unit page 10 lcd data sheet
non-select waveform select waveform non-select waveform t r 100% 10% photo- detector output 90% notes: t r = rise time t d = decay time 5023-7 voltage applied to lcd cell 0 v response waveform drive waveform t d figure 8. definition of response time passive mat rix lcd unit LM320081 lcd data sheet page 11
precautions this units viewing angle is illustrated in figure 9 and as follows: C q 1 < viewing angle < q 2 ( q 1 < 0 , q 2 3 0 ) consider the optimum viewing conditions ac- cording to the purpose when installing the unit. this unit is installed using mounting tabs at the four corners of pcb or bezel. during installation, avoid undue stress on the unit such as twisting or bending. a transparent acrylic resin board or other type of protective panel should be attached to the front of the unit to protect the polarizer, lcd cells, etc. since the front polarizer is easily damaged, use care to not scratch the face. if the surface of the lcd cells need cleaning, wipe it with a soft cloth. wipe liquid off immediately since it can cause color changes and staining. the lcd is made of glass pla tes. use care when handling it to avoid breakage. this unit contains cmos lsis which are sensitive to electrostatic charges. the following measures should be taken to pro tect the unit from electro- static discharge: C ground the metallic case of the main system (contact of the unit and main system). C insulate the unit and main sys tem by attaching insulating washers made of bakelite or nylon. the unit should be driven according to the specified ratings to avoid malfunction or permanent damage. dc voltage drive leads to rapid deterioration of lc, so ensure that the drive is alternating waveform by continuous application of the signal m. avoid latch- up of driver lsis and application of dc voltage to the lcd panel by following the on/off sequence shown in figure 10. do not expose the unit to direct sunlight, strong ultraviolet lig ht, etc., for prolonged periods. store the unit at normal room temperature to pre- vent the lc from converting to liquid (due to exces- sive temperature changes). do not disassemble the unit. warning: avoid using any materials which emit gas from epoxy resin (amines hardener) and silicon ad- hesive agent (dealcohol or deoxym) to prevent polar- izer color change caused by gas. 5023-9 panel surface q 1 q = 0 normal line q 2 viewing direction figure 9. dot matrix lcd viewing angle LM320081 passive matrix lcd unit page 12 lcd data sheet
5023-10 20 ms max 0 ms min 0 ms min to 20 ms max 0 ms min 0 ms min on off on (5 v) off (v ss ) on (5 v) off (v ss ) off (v ss - v dd ) on (v ee ) v dd s, cp1, cp2, data v ee 0.8 v dd figure 10. power on/off sequence passive mat rix lcd unit LM320081 lcd data sheet page 13
outline dimensions 5023-11 4 - r1.0 47.5 1 12 (note 2) 71.98 (240 dots) 76 0.3 96 0.5 3.2 8 9 122 95.98 (320 dots) 100 0.3 124 0.3 134 0.5 3.01 1.0 0.3 5.0 0.3 (note 3) 6.5 max viewing area active area 11.51 9.5 0.3 3.5 0.3 4 - r1.6 16 - r0.5 103 0.3 107 0.5 2.0 0.3 3.5 0.3 0.6 0.6 3.5 0.3 pin # pin # signal 1 2 3 4 5 6 7 8 9 10 11 12 s cp 1 cp 2 v dd v ss v ee d 0 d 1 d 2 d 3 vr 1 vr 2 signal 0.3 0.28 0.02 0.3 0.28 0.02 dot size (20/1) notes: 1. bezel is plated with white-zinc. 2. connector: 52103-1217 (molex). 3. inserting direction of the flat cable. LM320081 passive matrix lcd unit page 14 lcd data sheet

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