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url: www.topwaydisplay.com www.topwaysz.com document name: LM6038D-manual-rev0.2.doc page: 1 of 14 LM6038D lcd module user manual shenzhen topway technology co., ltd. rev. descriptions release date 0.1 preliminary release 2006-08-17 0.2 update ?1.1 display spec?, typing corre ction ?1.4 terminal function? 2007-12-20
topway lcd module user manual LM6038D url: www.topwaydisplay.com www.topwaysz.com document name: LM6038D-manual-rev0.2.doc page: 2 of 14 table of content 1. basic specifications........................................................................................................... ..... 3 1.1 display spec ificat ions ......................................................................................................... ................................... 3 1.2 mechanical sp ecificat ions ...................................................................................................... ................................ 3 1.3 block di agram .................................................................................................................. ...................................... 3 1.4 terminal f uncti ons............................................................................................................. .................................... 4 1.5 jumper f uncti ons............................................................................................................... .................................... 4 2. absolute maximum ratings.................................................................................................... 5 3. electrical characteristics..................................................................................................... ... 5 3.1 dc characte ristics ............................................................................................................. .................................... 5 3.2 led backlight circuit characte ristics .......................................................................................... ........................... 5 3.3 ac charac teristics ............................................................................................................ .................................... 6 3.4 reset ti ming ................................................................................................................... ....................................... 8 4. function specifications........................................................................................................ ... 9 4.1 the parallel interface ......................................................................................................... .................................... 9 4.2 the serial interf ace ........................................................................................................... ..................................... 9 4.3 basic se tting .................................................................................................................. ...................................... 10 4.4 resetting the lcd mo dule ....................................................................................................... ............................ 10 4.5 display memory map............................................................................................................. ............................... 10 4.6 display comm ands ............................................................................................................... ............................... 11 4.7 display commands (continue) .................................................................................................... ......................... 12 4.8 basic operating s equence (exa mple)............................................................................................. ..................... 13 5. design and handling precaution ......................................................................................... 14
topway lcd module user manual LM6038D url: www.topwaydisplay.com www.topwaysz.com document name: LM6038D-manual-rev0.2.doc page: 3 of 14 1. basic specifications 1.1 display specifications 1) lcd display mode : stn-gray, positive, transmissive 2) display color : display data = ?1? : deep blue(*1) : display data = ?0? : light gray (*2) 3) viewing angle : 6h 4) driving method : 1/65 duty, 1/9 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 : 92.7 x 53.8 x 11.1max (mm) (see attached outline drawing for details) 1.3 block diagram lcd panel 128 64pixels seg4 : . seg131 b la vdd st7565p or equivalent com63 : com0 vss d0~d7 /cs1, /rd, /wr, /res, a0 backlight circuit
topway lcd module user manual LM6038D url: www.topwaydisplay.com www.topwaysz.com document name: LM6038D-manual-rev0.2.doc page: 4 of 14 1.4 terminal functions pin no descriptions k1. k2 k4,k5 pin name i/o 8-bit parallel 8080 mode 8-bit parallel 6800 mode serial mode 1 1 /cs1 input chip select /cs1=l, enable access to the lcd module /cs1=h, disable access to the lcd module 2 2 /res input reset signal /res = l, initialization is executed /res = h, normal running. 3 3 a0 input register select a0 = h, transferring the display data a0 = l, transferring the control data 4 - /wr (r/w) input /wr=l ? h, /rd=h; data or instruction latch into the lcd module 5 - /rd (e) input /wr=h, /rd=l; data or status read form the lcd module r/w=h,e=h; data or status read from the lcd module r/w=l,e=h ? l; data or status latch into the lcd module not used, leave open or pull hi 6 - d0 i/o : - : i/o 11 - d5 i/o not used, leave open 12 4 d6(scl) i/o serial clock input 13 5 d7(si) i/o 8-bit data bus; three state i/o terminal for display data or instruction data when /cs=h, d0~d7=high impedance serial data input 14 6 vdd supply positive power supply 15 7 vss supply negative power supply,0v 16 8 bla supply positive power for led backlight 1.5 jumper functions jp1 jp2 jp3 jp4 interface mode close open close open 6800 mode open close close open 8080 mode open close open close serial mode (default
topway lcd module user manual LM6038D url: www.topwaydisplay.com www.topwaysz.com document name: LM6038D-manual-rev0.2.doc page: 5 of 14 2. absolute maximum ratings items symbol min. max. unit condition supply voltage v dd -0.3 +3.3 v v ss = 0v input voltage v in -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 othe r conditions beyond those listed in the specif ication is not implied and prolonged exposure to extreme conditions may affect device reliability. 3. electrical characteristics 3.1 dc characteristics v ss =0v, v dd =3.0v, t op =25 c items symbol min. typ. max. unit condition / application pin operating voltage v dd 2.8 - 3.3 v vdd input high voltage v ih 0.8xv dd - v dd v input low voltage v il v ss - 0.2xv dd v /res, /cs1, a0, /wr, /rd, d0~d7 output high voltage v oh 0.75xv dd - v dd v d0~d7 output low voltage v ol v ss - 0.25xv dd v d0~d7 operating current i dd - tbd tbd ma vdd 3.2 led backlight circuit characteristics v ss =0v, if=20ma, t op =25 c items symbol min typ max unit applicable pin forword voltage vf bla - 3.3 - v bla forword current if bla - - 25 ma bla bla vss
topway lcd module user manual LM6038D url: www.topwaydisplay.com www.topwaysz.com document name: LM6038D-manual-rev0.2.doc page: 6 of 14 3.3 ac characteristics 3.3.1 8080 mode system bus timing v ss =0v, v dd =3.0v, t op =25 c item symbol min. typ. max. unit system cycle time tcyc8 500 - - ns address setup time (a0) taw8 10 - - ns address hold time (a0) tah8 10 - - ns control low pulse width (/rd) tccl r 275 - - ns control low pulse width (/wr) tcclw 275 - - ns control high pulse width (/rd) tcch r 225 - - ns control high pulse width (/wr) tcchw 225 - - ns data setup time tds8 50 - - ns data hold time tdh8 10 - - ns /rd access time (*2) tacc8 - - 175 ns output disable time (*2) tch8 13 - 125 ns note: *1. input signal rise/fall time should be less than 15ns . *2.all timing is using 20% and 80% of vdd as the reference.
topway lcd module user manual LM6038D url: www.topwaydisplay.com www.topwaysz.com document name: LM6038D-manual-rev0.2.doc page: 7 of 14 3.3.2 6800 mode system bus timing v ss =0v, v dd =3.0v, t op =25 c item symbol min. typ. max. unit system cycle time tcyc6 500 - - ns address setup time (a0) taw6 10 - - ns address hold time (a0) tah6 10 - - ns control low pulse width (/rd) tewlr 275 - - ns control low pulse width (/wr) tewlw 275 - - ns control high pulse width (/rd) tewhr 225 - - ns control high pulse width (/wr) tewhw 225 - - ns data setup time tds6 50 - - ns data hold time tdh6 10 - - ns /rd access time (*2) tacc6 - - 175 ns output disable time (*2) tch6 13 - 125 ns note: *1. input signal rise/fall time should be less than 15ns . *2. cl=100pf *3.all timing is using 20% and 80% of vdd as the reference.
topway lcd module user manual LM6038D url: www.topwaydisplay.com www.topwaysz.com document name: LM6038D-manual-rev0.2.doc page: 8 of 14 3.3.3 serial mode interface v ss =0v, v dd =3.0v, t op =25 c item symbol min. typ. max. unit serial clock period tscyc 125 - - ns address setup time (a0) tsas 38 - - ns address hold time (a0) tsah 25 - - ns scl ?h? pulse width tshw 63 - - ns scl ?l? pulse width tslw 63 - - ns data setup time tsds 38 - - ns data hold time tsdh 25 - - ns cs-scl time tcss 38 - - ns cs-scl time tcsh 75 - - ns note: *1. input signal rise/fall time should be less than 15ns . *2. cl=100pf *3.all timing is using 20% and 80% of vdd as the reference.
topway lcd module user manual LM6038D url: www.topwaydisplay.com www.topwaysz.com document name: LM6038D-manual-rev0.2.doc page: 9 of 14 3.4 reset timing v ss =0v, v dd =3.0v, t op =25 c item symbol min. typ. max. unit reset time tr - - 2.5 s reset low pulse width trw 2.5 - - s note: *1.all timing is using 20% and 80% of vdd as the reference. 4. function specifications 4.1 the parallel interface shared 6800 mode 8080 mode a0 r/w e /rd /wr function h h h l h reads the display data h l h ? l h l ? h writes the display data l h h l h status read l l h ? l h l ? h write control data(command) 4.2 the serial interface when the serial interface has been selected then when the chip is in active state the serial data input(si) and the serial clock(scl) can be received. the serial data is read from the serial data input pin in the rising edge of the serial clock . when ?a0?=?h?, the data is display data, and when ?a0?=?l?, the data is command.
topway lcd module user manual LM6038D url: www.topwaydisplay.com www.topwaysz.com document name: LM6038D-manual-rev0.2.doc page: 10 of 14 4.3 basic setting to drive the lcd module correctly and provide nor mally display, please use the following setting - adc = 0 (normal) - shl select = 1 (reverse) - lcd bias select = 1/9 - initial display line = 0 - entire display on/off = off (normal) - reverse display on/off = off (normal) - set power control set: voltage follower = on, voltage converter = on, voltage regulator = on - display on/off = on note: *1. these setting/commands should issue the lcd module while start up. *2. see the display commands section for details. 4.4 resetting the lcd module the lcd module should be initialized by using /res terminal. while turning on the vdd and vss power supply, maintain /res terminal at low level. after the power supply stabilized, release the reset terminal (/res=high) 4.5 display memory map page address data lcd display (front view) 0 d0 : d7 1 d0 : d7 2 d0 : d7 3 d0 : d7 4 d0 : d7 5 d0 : d7 6 d0 : d7 7 d0 : d7 column address 04h ? 83h note: *1. adc = 0 (normal) *2. shl selection = 1 (reverse) *3. initial display line = 0 128x64 p ixels
topway lcd module user manual LM6038D url: www.topwaydisplay.com www.topwaysz.com document name: LM6038D-manual-rev0.2.doc page: 11 of 14 4.6 display commands code no. instructions a0 /rd /wr d7 d6 d5 d4 d3 d2 d1 d0 function 1 display on/off 0 1 0 1 0 1 0 1 1 1 don don=0, display off don=1, display oin 2 display start line set 0 1 0 0 1 display start address sets the display ram display start line address 3 set page address 0 1 0 1 0 1 1 page address set the display ram page address set column address (upper-4-bits) 0 1 0 0 0 0 1 col. add. upper set the upper-4-bit of column address counter 4 set column address (lower-4-bits) 0 1 0 0 0 0 0 col. add. lower set the lower-4-bit of column address counter 5 read status 0 0 1 status 0 0 0 0 read the status data 6 write display data 1 1 0 write data write data into the display ram 7 read display data 1 0 1 read data read data form the display ram 8 adc select 0 1 0 1010000 adc sets the display ram address seg output correspondence adc= 0,normal . adc=1, reverse 9 normal/reverse display 0 1 0 1010011 rev rev=0, normal display rev=1, reverse display 10 entire display on/off 0 1 0 1010010 eon eon=0, normal display eon=1, entire display on 11 set lcd bias 0 1 0 1010001 bias set the lcd driving voltage bias bias=0, 1/9 bias bias=1, 1/7 bias 12 set read-modify-write 0 1 0 11100000 enter the ?read-modify-write? mode column address counter will increase in each ?write display data?, and will not increase in each ?read display data command? 13 reset read-modify-write 0 1 0 11101110 clear the ?read-modify-write? m ode 14 reset 0 1 0 11100010 resets the lcd module 15 shl select 0 1 0 1 1 0 0 shl *** set the com scanning direction shl=0, normal display shl=1, flipped in y direction * = don?t care terms 16 power control set 0 1 0 00101 vc vr vf set the power circuit operation mode vf: lcd supply voltage follower vr: lcd supply voltage regulator vc: lcd supply voltage converter (1=on, 0=off) 17 regulator resistor select 0 1 0 00100 radio setting set the built-in resistor ratio (rb/ra) note: *1. do not use any other command not listed, or the system malfunction may result. *2. for the details of the display commands, please refer to st7565p data sheet.
topway lcd module user manual LM6038D url: www.topwaydisplay.com www.topwaysz.com document name: LM6038D-manual-rev0.2.doc page: 12 of 14 4.7 display commands (continue) code no. instructions a0 /rd /wr d7 d6 d5 d4 d3 d2 d1 d0 function electronic volume mode set 0 1 010000001 set reference voltage mode 18 electronic volume register set 0 1 0 ** electronic control value set reference voltage register (display contrast value) 19 power save - - - -------- compound instruction: display off + entire display on 20 nop 0 1 0 1 1 1 0 0 0 1 1 non-operation command note: *1. do not use any other command not listed, or the system malfunction may result. *2. for the details of the display commands, please refer to st7565p data sheet. 4.7.1 power off the lcd module it recommends that enter power save mode before power off the lcd module. 4.7.2 refreshing the lcd module it recommends that the operating modes and display contents be refreshed periodically to prevent the effect of unexpected noise.
topway lcd module user manual LM6038D url: www.topwaydisplay.com www.topwaysz.com document name: LM6038D-manual-rev0.2.doc page: 13 of 14 4.8 basic operating sequence (example) 4.8.1 initialization sequence code function a0 d7 d6 d5 d4 d3 d2 d1 d0 hex note turn on power supply vdd & vss while maintaining /res at low ---- - -- - - - - wait until power supply is stabilized ---- - -- - - - - release the /res reset signal (/res = high) ---- - -- - - - see ac characteristics section for timing details lcd bias = 1/9 010100010 a2h lcd panel characteristic adc = normal 010100000 a0h no flip on x-direction (seg) shl = reverse 011001000 c8h flip on y-direction (com) initial display line=0 0 0 1 0 0 0 0 0 0 40h i.e. display ram ?page 0 - d0? matched to top line of the lcd power control voltage follower = off voltage regulator = off voltage converter = on 000101100 2ch turn on the internal voltage converter and wait until vout stable. delay 50ms ---- - -- - - - power control voltage follower = off voltage regulator = on voltage converter = on 000101110 2eh turn on the internal voltage regulator and wait until vout stable. delay 50ms ---- - -- - - - power control voltage follower = on voltage regulator = on voltage converter = on 000101111 2fh turn on the internal voltage follower and wait until vout stable delay 50ms ---- - -- - - - regulator resistor select 0 0 0 1 0 0 1 0 1 25h set the built-in resistor ratio to middle set reference voltage mode 0 1 0 0 0 0 0 0 1 81h set to the middle of the range it may be adjusted for achieving the best display contrast set reference voltage resistor 0 0 0 1 0 0 0 0 0 20h display on 010101111 afh turn on the lcd display set page address = 0 010110000 b0h specify the display data ram page address to 00h set column address (upper-4bit=0) 0 0 0 0 1 0 0 0 0 10h set column address (lower-4bit=4) 0 0 0 0 0 0 1 0 0 04h specify the display data ram column address to 00h write display data 1 display data write data to display data ram. after write, the internal column address counter will be increased by 1 automatically write other display data ?
topway lcd module user manual LM6038D url: www.topwaydisplay.com www.topwaysz.com document name: LM6038D-manual-rev0.2.doc page: 14 of 14 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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