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url: www.topwaydisplay.com www.topwaysz.com document name: LM320240CFW-manual-rev0.1.doc page: 1 of 11 LM320240CFW lcd module user manual shenzhen topway technology co., ltd. rev. descriptions release date 0.1 new release 2008-02-27
topway lcd module user manual LM320240CFW url: www.topwaydisplay.com www.topwaysz.com document name: LM320240CFW-manual-rev0.1.doc page: 2 of 11 table of content 1. basic specifications........................................................................................................... ..... 3 1.1 display spec ifications......................................................................................................... ................... 3 1.2 mechanical specifications ...................................................................................................... ............... 3 1.3 block diagram .................................................................................................................. ..................... 3 1.4 terminal functions ............................................................................................................. ................... 4 2. absolute maximum ratings.................................................................................................... 5 3. electrical characteristics..................................................................................................... ... 5 3.1 dc characte ristics............................................................................................................. .................... 5 3.2 led backlight circui t characteristics .......................................................................................... .......... 5 3.3 ac characteristics ............................................................................................................. .................... 6 3.4 reset timing................................................................................................................... ....................... 7 4. function specifications ........................................................................................................ .. 8 4.1 adjusting the di splay contrast ................................................................................................. ............. 8 4.2 resetting the lcd mo dule....................................................................................................... .............. 8 4.3 jumper fu nctions ............................................................................................................... ................... 8 4.4 display pi xel map .............................................................................................................. .................... 8 4.5 command su mmary................................................................................................................ .............. 9 4.6 initialization se tting example................................................................................................. .............. 10 5. design and handling precaution ......................................................................................... 11
topway lcd module user manual LM320240CFW url: www.topwaydisplay.com www.topwaysz.com document name: LM320240CFW-manual-rev0.1.doc page: 3 of 11 1. basic specifications 1.1 display specifications 1) lcd display mode : stn, negative, transmissive 2) display color : display data = ?1? : light gray (*1) : display data = ?0? : dark blue (*2) 3) viewing angle : 6 h 4) driving method : 1/240 duty, 1/14 bias 5) backlight : white led backlight note: *1. color tone may slightly change by temperature and driving condition. *2. the color is defined as the inactive / background color 1.2 mechanical specifications 1) outline dimension : 143.0 x 96.8 x 11.4 max. see attached outline drawing for details 1.3 block diagram 320 x 240 pixels lcd panel seg driver vdd vout, v0 seg1 : seg160 seg driver com driver seg161 : seg320 com1 : com240 /wr, /rd, /cs, a0, /res db0~db7 bla backlight circuit s1d13700 or equivalent vss power & booster circuit
topway lcd module user manual LM320240CFW url: www.topwaydisplay.com www.topwaysz.com document name: LM320240CFW-manual-rev0.1.doc page: 4 of 11 1.4 terminal functions pin no. pin name i/o descriptions 1 vss power 0v power supply, gnd 2 vdd power positive power supply 3 v0 input lcd contrast reference input 4 /wr input write enable input, active low 5 /rd input read enable input, active low 6 /cs input chip select signal /cs=low: data io is enabled 7 a0 input data type select a0=h: command write, display data or cursor add read a0=l: status flag read, disp lay data or parameter write 8 /res input reset signal: /res = l, reset the lcd module /res = h, normal running 9 db0 : : 16 db7 i/o 8-bit bi-directional data bus 17 bla power backlight supply 18 vout power power booster output for v0
topway lcd module user manual LM320240CFW url: www.topwaydisplay.com www.topwaysz.com document name: LM320240CFW-manual-rev0.1.doc page: 5 of 11 2. absolute maximum ratings items symbol min. max. unit condition supply voltage v dd 0 +7.0 v v ss = 0v input voltage v in v ss -0.3 v dd +0.3 v v ss = 0v operating temperature t op -20 +70 c no condensation storage temperature t st -30 +80 c no condensation cautions: any stresses exceeding the absolute maximum ratings may cause substantial damage to the device. functional operation of this device at other conditions beyond those listed in the specification is not im plied and prolonged exposure to extreme conditions may affect device reliability. 3. electrical characteristics 3.1 dc characteristics v ss =0v, v dd =3.3v, t op =25 c items symbol min. typ. max. unit applicable pin operating voltage v dd 3.0 3.3 3.6 v vdd input high voltage v in 0.8xvdd - vdd v db0~db7, /wr, /rd, /cs, a0, /res input low voltage v in vss - 0.15xvdd v db0~db7, /wr, /rd, /cs, a0, /res lcd contrast reference voltage (*1) v 0 - 21.0 - v v0 frame freq. f frame 60 66 80 hz operating current i dd - 39 180 ma vdd note: *1. frame freq. at 66hz 3.2 led backlight circuit characteristics blk=0v, if bla =170.0ma, t op =25 c items symbol min. typ. max. unit applicable pin forward voltage vf bla - 3.3 - v bla forward current if bla - 170 220 ma bla cautions: exceeding the recommended driving current could cause substantial damage to t he backlight and shorten its lifetime. vss bla no. of led = 10pcs
topway lcd module user manual LM320240CFW url: www.topwaydisplay.com www.topwaysz.com document name: LM320240CFW-manual-rev0.1.doc page: 6 of 11 3.3 ac characteristics 3.3.1 8080 mode v ss =0v, v dd =3.3v, t op =25 c item symbol min. typ. max. unit /cs setup time t1 7 - - ns a0 setup time t2 7 - - ns /wr, /rd falling edge to /wait driven low t3 1.6 - 20 ns d[7:0] setup time to /wr rising edge (write cycle) t4 (*2) - - ns /rd falling edge to d[7:0] driven (read cycle) t5 4 ns /cs hold time t6 9 - - ns a0 hold time t7 9 - - ns /rd, /wr rising edge to wait# high impedance t8 1.6 - 13 ns d[7:0] hold time from /wr rising edge (write cycle) t9 6.5 - - ns d[7:0] hold time from /cs rising edge (read cycle) t10 2.4 - 18 ns /wait rising edge to valid data t11 - - (*3) ns /rd, /wr pulse inactive time t12 (*4) - - ns /wait pulse active time t13 - - (*5) ns note: *1. ts = system clock period *2. t4min = 2ts + 5 *3. t11max = 1ts + 7 (for 5.0v) *4. t12min = 1ts (for a read cycle followed by a read or write cycle) = 2ts + 2 (for a write cycle followed by a write cycle) = 5ts + 2 (for a write cycl e followed by a read cycle) *5. t13max = 4ts + 2 *6. input signal rise/fall time should be less than 4.5ns *7. for details, please see the s1d13700 data sheet bus timing diagram
topway lcd module user manual LM320240CFW url: www.topwaydisplay.com www.topwaysz.com document name: LM320240CFW-manual-rev0.1.doc page: 7 of 11 3.4 reset timing v ss =0v, v dd =3.3v, t op =25 c item symbol min. typ. max. unit oscillator stable delay (*1) t1 4.0 - - ms reset pulse duration (*2) t2 1.3 - - ms note: *1. a delay is required after exiting power save mode. writing the system set command will exit power save mode and start the internal oscillator. *2. it requires a reset pulse after power-on in order to re-initialize its internal state. reset timing diagram
topway lcd module user manual LM320240CFW url: www.topwaydisplay.com www.topwaysz.com document name: LM320240CFW-manual-rev0.1.doc page: 8 of 11 4. function specifications 4.1 adjusting the display contrast a variable-resistor must be connected to the lcd module for providing a reference to v0. adjusting the vr will result the change of lcd display contrast. the recommended value of vr is 25k to 50k 4.2 resetting the lcd module the lcd module should be initialized by hardware reset, using /res terminal. 4.3 jumper functions 4.3.1 interfacing setting jumper jp9 jp10 function description open close cnf3=l, 8080 mode selected close open cnf3=h, 6800 mode selected 4.4 display pixel map 1,1 (d7) 2,1 (d6) 3,1 (d5) 4,1 (d4) 5,1 (d3) - - - - - - 316,1 (d4) 317,1 (d3) 318,1 (d2) 319,1 (d1) 320,1 (d0) 1,2 (d7) 2,2 (d6) 3,2 (d5) 4,2 (d4) 5,2 (d3) - - - - - - 316,2 (d4) 317,2 (d3) 318,2 (d2) 319,2 (d1) 320,2 (d0) 1,3 (d7) 2,3 (d6) 3,3 (d5) 4,3 (d4) 5,3 (d3) - - - - - - 316,3 (d4) 317,3 (d3) 318,3 (d2) 319,3 (d1) 320,3 (d0) : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : 1,238 (d7) 2,238 (d6) 3,238 (d5) 4,238 (d4) 5,238 (d3) - - - - - - 316,238 (d4) 317,238 (d3) 318,238 (d2) 319,238 (d1) 320,238 (d0) 1,239 (d7) 2,239 (d6) 3,239 (d5) 4,239 (d4) 5,239 (d3) - - - - - - 316,239 (d4) 317,239 (d3) 318,239 (d2) 319,239 (d1) 320,239 (d0) 1,240 (d7) 2,240 (d6) 3,240 (d5) 4,240 (d4) 5,240 (d3) - - - - - - 316,240 (d4) 317,240 (d3) 318,240 (d2) 319,240 (d1) 320,240 (d0) pixel mapping (top view) note: *1. based on the top view of the lcd module, the 1, 1 (x, y) pixel is the upper-left pixel; the 320, 240 (x, y) pixel is the lower-right pixel. *2. for the details of memory mapping please refer to s1d13700 datasheet. lcd module v0 vss vdd power supply vr vout
topway lcd module user manual LM320240CFW url: www.topwaydisplay.com www.topwaysz.com document name: LM320240CFW-manual-rev0.1.doc page: 9 of 11 4.5 command summary command para- meter a0 /rd /wr d7 d6 d5 d4 d3 d2 d1 d0 hex descriptions - 1 1 0 0 1 0 0 0 0 0 0 40 init device and display (with 8 parameters) p1 0 1 0 0 0 iv 1 w/s m2 0 m0 ** m0=0: internal cg rom m0=1: internal cg ram m2=0: 8-pixel char height m2=1: 16-pixel char height w/s=0: single panel drive w/s=1: dual panel drive iv=0: screen top-line correction iv=1: no screen top-line correction p2 0 1 0 mod 0 0 0 fx ** fx=horizontal char size in pixels ? 1 (define the horizontal char size) mod=0: 16-line ac drive mod=1: two frame ac drive p3 0 1 0 0 0 0 0 fy ** fy=vertical char size in pixels ? 1 (define the vertical char size) p4 0 1 0 c/r ** c/r: character bytes per row p5 0 1 0 tc/r ** tc/r: total char bytes per row (including horizontal blanking) p6 0 1 0 l/f ** l/f: lines per frame p7 0 1 0 apl ** apl: horizontal address range of the virtual screen (low byte) system set p8 0 1 0 aph ** aph: horizontal address range of the virtual screen (high byte) power save - 1 1 0 0 1 0 1 0 0 1 1 53 power save mode enable - 1 1 0 0 1 0 1 1 0 0 d 58 / 59 enable and disable display and display flashing (with 1 parameter) d=0: display off d=1: display on disp on/off p1 0 1 0 fp5 fp4 fp3 fp2 fp1 fp0 fc1 fc0 ** each pair of bit in fp sets the attributes of one screen block - 1 1 0 0 1 0 0 0 1 0 0 44 set display start address and display regions (with 8 or 10 parameters) p1 0 1 0 a7 a6 a5 a4 a3 a2 a1 a0 ** screen block 1 start address (sad1) lsb p2 0 1 0 a15 a14 a13 a12 a11 a10 a9 a8 ** screen block 1 start address (sad1) msb p3 0 1 0 l7 l6 l5 l4 l3 l2 l1 l0 ** screen block 1 size register (sl1) p4 0 1 0 a7 a6 a5 a4 a3 a2 a1 a0 ** screen block 2 start address (sad2) lsb p5 0 1 0 a15 a14 a13 a12 a11 a10 a9 a8 ** screen block 2 start address (sad2) msb p6 0 1 0 l7 l6 l5 l4 l3 l2 l1 l0 ** screen block 2 size register (sl2) p7 0 1 0 a7 a6 a5 a4 a3 a2 a1 a0 ** screen block 3 start address (sad3) lsb p8 0 1 0 a15 a14 a13 a12 a11 a10 a9 a8 ** screen block 3 start address (sad3) msb p9 0 1 0 a7 a6 a5 a4 a3 a2 a1 a0 ** screen block 4 start address (sad4) lsb (for dual panel drive and two layer config are select) scroll p10 0 1 0 a15 a14 a13 a12 a11 a10 a9 a8 ** screen block 4 start address (sad4) msb (for dual panel drive and two layer config are select) - 1 1 0 0 1 0 1 1 1 0 1 5d set cursor type (with 2 parameters) p1 0 1 0 0 0 0 0 x3 x2 x1 x0 ** crx csrform p2 0 1 0 cm 0 0 0 y3 y2 y1 y0 ** cry cm=0: underscore cursor; cm=1: block cursor csrdir - 1 1 0 0 1 0 0 1 1 cd1 cd0 4c~4f set direction of cursor movement cd=00: right; cd=01: left,; cd=10: up; cd=11: down - 1 1 0 0 1 0 1 1 0 1 1 5b set display overlay format (with 1 parameters) ovlay p1 0 1 0 0 0 0 ov dm2 dm1 mx1 mx0 ** - 1 1 0 0 1 0 1 1 1 0 0 5c set start address of char generator ram (with 2 parameters) p1 0 1 0 a7 a6 a5 a4 a3 a2 a1 a0 ** sagl cgram adr p2 0 1 0 a15 a14 a13 a12 a11 a10 a9 a8 ** sagh - 1 1 0 0 1 0 1 1 0 1 0 5a set horizontal scroll position (with 1 parameters) hdot scr p1 0 1 0 0 0 0 0 0 d2 d1 d0 ** - 1 1 0 0 1 0 0 0 1 1 0 46 set cursor address (with 2 parameters) p1 0 1 0 a7 a6 a5 a4 a3 a2 a1 a0 ** csrl csrw p2 0 1 0 a15 a14 a13 a12 a11 a10 a9 a8 ** csrh - 1 1 0 0 1 0 0 0 1 1 1 47 read cursor address (with 2 parameters) p1 1 0 1 a7 a6 a5 a4 a3 a2 a1 a0 ** csrl csrr p2 1 0 1 a15 a14 a13 a12 a11 a10 a9 a8 ** csrh - 1 1 0 0 1 1 0 0 0 0 0 60 select the gray scale depth (in bits-per-pixel) gray scale p1 0 1 0 0 0 0 0 0 0 bpp1 bpp2 ** bpp=00: 1 bits-per-pixel; bpp=01: 2 bits-per-pixel; bpp=10: 4 bits-per-pixel; bpp=01: reserved - 1 1 0 0 1 0 0 0 0 1 0 42 write to display memory (with n parameters) p1 0 1 0 memory data ** : : : : : ** mwrite pn 0 1 0 memory data ** display memory data - 1 1 0 0 1 0 0 0 0 1 1 43 read from display memory (with n parameters) p1 1 0 1 memory data ** : : : : : ** mread pn 1 0 1 memory data ** display memory data note: for details please refer to s1d13700 datasheet.
topway lcd module user manual LM320240CFW url: www.topwaydisplay.com www.topwaysz.com document name: LM320240CFW-manual-rev0.1.doc page: 10 of 11 4.6 initialization setting example the following setting should be issue to lcd module after hardware reset. (example could be adjusted if necessary.) command parameter a0 /rd /wr value (binary) hex descriptions - 1 1 0 0100 0000 40 init device and display (with 8 parameters) p1 0 1 0 0011 0000 30 m0=0: internal cg rom m2=0: 8-pixel char height w/s=0: single panel drive iv=1: no screen top-line correction p2 0 1 0 1000 0111 87 fx=7: the horizontal char size=7+1=8 wf=1: two frame ac drive p3 0 1 0 0000 0111 07 fy=7: the vertical char size=7+1=8 p4 0 1 0 0010 1000 28 c/r: character bytes per row p5 0 1 0 0100 1001 47 tc/r: total char bytes per row (including horizontal blanking) p6 0 1 0 1110 1111 ef l/f: lines per frame p7 0 1 0 0010 1000 28 apl: horizontal address range of the virtual screen (low byte) system set p8 0 1 0 0000 0000 00 aph: horizontal address range of the virtual screen (high byte) - 1 1 0 0101 1001 59 display on disp on/off p1 0 1 0 0000 0100 04 sets the attributes of screen block (sad1 on, cursor off) - 1 1 0 0100 0100 44 set cursor type (with 10 parameters) p1 0 1 0 0000 0000 00 sad 1l p2 0 1 0 0000 0000 00 sad 1h p3 0 1 0 1110 1111 ef sl1 p4 0 1 0 0000 0000 00 sad 2l (not assigned in this example) p5 0 1 0 0000 0000 00 sad 2h (not assigned in this example) p6 0 1 0 1110 1111 ef sl2 p7 0 1 0 0000 0000 00 sad3l (not assigned in this example) scroll p8 0 1 0 0000 0000 00 sad3h (not assigned in this example) - 1 1 0 0101 1101 5d set cursor type (with 2 parameters) p1 0 1 0 0000 0111 07 crx csrform p2 0 1 0 0001 0111 17 cry csrdir - 1 1 0 0100 1100 4c set direction of cursor movement - 1 1 0 0101 1011 5b set display overlay format (with 1 parameters) ovlay p1 0 1 0 0000 0101 05 ov=0: two layer in used; dm1=0: layer 3 as text mode; dm0=1: layer 1 as graphic mode; mx=01: layer1 xor layer 2 - 1 1 0 0101 1010 5a set horizontal scroll position (with 1 parameters) hdot scr p1 0 1 0 0000 0000 00 no scroll - 1 1 0 0110 0000 60 sel select the gray scale depth (in bits-per-pixel) gray scale p1 0 1 0 0000 0000 00 bpp=00: 1 bits-per-pixel - 1 1 0 0100 0110 46 set cursor address (with 2 parameters) p1 0 1 0 0000 0000 00 csrl csrw p2 0 1 0 0000 0000 00 csrh - 1 1 0 0100 0010 42 write to display memory (with n parameters) p1 0 1 0 memory data ** : : : : : ** mwrite pn 0 1 0 memory data ** display memory data note: for details please refer to s1d13700 datasheet.
topway lcd module user manual LM320240CFW url: www.topwaydisplay.com www.topwaysz.com document name: LM320240CFW-manual-rev0.1.doc page: 11 of 11 5. design and handling precaution 1. the lcd panel is made by glass. any mechanical shock (eg. dropping form high place) will damage the lcd module. 2. do not add excessive force on the surface of the display, which may cause the display color change abnormally. 3. the polarizer on the lcd is easily get scratched. if possible, do not remove the lcd protective film until the last step of installation. 4. never attempt to disassemble or rework the lcd module. 5. only clean the lcd with isopropyl alcohol or ethyl alcohol. other solvents (eg. water) may damage the lcd. 6. when mounting the lcd module, make sure that it is free form twisting, warping and distortion. 7. ensure to provide enough space (with cushion) between case and lcd panel to prevent external force adding on it, or it may cause damage to the lcd or degrade the display result. 8. only hold the lcd module by its side. never hold lcd module by add force on the heat seal or tab. 9. never add force to component of the lcd module. it may cause invisible damage or degrade of the reliability. 10. lcd module could be easily damaged by static electricity. be careful to maintain an optimum anti-static work environment to protect the lcd module. 11. when peeling off the protective film from lcd, static charge may cause abnormal display pattern. it is normal and will resume to normal in a short while. 12. take care and prevent get hurt by the lcd panel sharp edge. 13. never operate the lcd module exceed the absolute maximum ratings. 14. keep the signal line as short as possible to prevent noisy signal applying to lcd module. 15. never apply signal to the lcd module without power supply. 16. ic chip (eg. tab or cog) is sensitive to the light. strong lighting environment could possibly cause malfunction. light sealing structure casing is recommend. 17. lcd module reliability may be reduced by temperature shock. 18. when storing the lcd module, avoid exposure to the direct sunlight, high humidity, high temperature or low temperature. they may damage or degrade the lcd module

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