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url: www.topwaydisplay.com www.topwaysz.com document name: LM6029A-manual-rev0.1 page: 1 of 11 LM6029A lcd module user manual shenzhen topway technology co., ltd. rev. descriptions release date 0.1 prelimiay release 2006-03-31
topway lcd module user manual LM6029A url: www.topwaydisplay.com www.topwaysz.com document name: LM6029A-manual-rev0.1 page: 2 of 11 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 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 characte ristics ............................................................................................................. .................................... 6 4. function specifications ........................................................................................................ .. 7 4.1 basic se tting .................................................................................................................. ........................................ 7 4.2 resetting the lcd mo dule ....................................................................................................... .............................. 7 4.3 display memory map ............................................................................................................. ................................ 7 4.4 display comm ands ............................................................................................................... ................................. 8 4.5 display commands (continue) .................................................................................................... ........................... 9 4.6 basic operating s equence (exa mple)............................................................................................. ..................... 10 5. design and handling precaution ......................................................................................... 11
topway lcd module user manual LM6029A url: www.topwaydisplay.com www.topwaysz.com document name: LM6029A-manual-rev0.1 page: 3 of 11 1. basic specifications 1.1 display specifications 1) lcd display mode : fstn, positive, transflective 2) display color : display data = ?1? : dark gray (*1) : display data = ?0? : light gray (*2) 3) viewing angle : 6h 4) driving method : 1/65 duty, 1/9 bias 5) backlight : white led 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 : 59.6 x 50.6 x 8.7 (see attached outline drawing for details) 1.3 block diagram lcd panel 128 x 64 pixels vss rs , /rd , /wr db0 ~ db7 /res , /cs1 seg0 : : seg127 com63 : com0 s6b0724a01 or e q uivalent vdd bl a backlight c ircuit
topway lcd module user manual LM6029A url: www.topwaydisplay.com www.topwaysz.com document name: LM6029A-manual-rev0.1 page: 4 of 11 1.4 terminal functions pin no. pin name i/o descriptions 1 vss power negative power supply, ground (0v) 2 vdd power positive power supply 3 db7 i/o : : : 10 db0 i/o 8-bit data bus; three state i/o terminal for display data or instruction data when /cs=h, db0~db7= high impedance 11 /rd input /wr=h, /rd=l; data or status read form the lcd module 12 /wr input /wr=l ? h, /rd=h; data or instruction latch into the lcd module 13 rs input register select rs = h, transferring the display data rs = l, transferring the control data 14 /res input reset signal /res = l, initialization is executed /res = h, normal running. 15 /cs1 input chip select /cs1=l, enable access to the lcd module /cs1=h, disable access to the lcd module 16 bla power positive power for led backlight
topway lcd module user manual LM6029A url: www.topwaydisplay.com www.topwaysz.com document name: LM6029A-manual-rev0.1 page: 5 of 11 2. absolute maximum ratings items symbol min. max. unit condition supply voltage v dd -0.3 +3.7 v v ss = 0v input voltage v in -0.3 v dd +0.3 v v ss = 0v operating temperature t op 0 +50 c no condensation storage temperature t st -20 +60 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 =3.3v, t op =25 c items symbol min. typ. max. unit condition / application pin operating voltage v dd 2.9 - 3.6 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, rs, /wr, /rd, db0~db7 output high voltage v oh 0.8xv dd - v dd v i oh =-0.5ma, db0~db7 output low voltage v ol v ss - 0.2xv dd v i ol =0.5ma, db0~db7 operating current i dd - 0.3 1.5 ma vdd sleep mode current i dds - - 2.0 a vdd 3.2 led backlight circuit characteristics v ss =0v, if bla =39ma, t op =25 c items symbol min. typ. max. unit applicable pin forward voltage vf bla - 3.3 - v bla forward current if bla - - 60 ma bla cautions: exceeding the recommended driving current could cause subs tantial damage to the backli ght and shorten its lifetime. vss bl a no. of leds = 3pcs
topway lcd module user manual LM6029A url: www.topwaydisplay.com www.topwaysz.com document name: LM6029A-manual-rev0.1 page: 6 of 11 3.3 ac characteristics 3.3.1 8080 mode system bus timing v ss =0v, v dd =3.3v, t op =25 c item symbol min. typ. max. unit system cycle time tcy80 375 - - ns address setup time (rs) tas80 10 - - ns address hold time (rs) tah80 10 - - ns control low pulse width (/rd) tpwlr80 150 - - ns control low pulse width (/wr) tpwlw80 75 - - ns control high pulse width (/rd) tpwhr80 75 - - ns control high pulse width (/wr) tpwhw80 75 - - ns data setup time tds80 50 - - ns data hold time tdh80 19 - - ns /rd access time (*2) tacc80 - - 175 ns output disable time (*2) tod80 - - 125 ns note: *1. input signal rise/fall time should be less than 12ns *2. cl=100pf 3.3.2 reset timing v ss =0v, v dd =3.3v, t op =25 c item symbol min. typ. max. unit reset time tr - - 2 s reset low pulse width trw 2 - - s note: *1. input signal rise/fall time should be less than 12ns
topway lcd module user manual LM6029A url: www.topwaydisplay.com www.topwaysz.com document name: LM6029A-manual-rev0.1 page: 7 of 11 4. function specifications 4.1 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. 4.2 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) 4.3 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 00h ? 7fh note: *1. adc = 0 (normal) *2. shl selection = 1 (reverse) *3. initial display line = 0 128x64 p ixels
topway lcd module user manual LM6029A url: www.topwaydisplay.com www.topwaysz.com document name: LM6029A-manual-rev0.1 page: 8 of 11 4.4 display commands code no. instructions rs /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 on 2 initial display line 0 1 0 0 1 initial display line specifies ddram line for com0 3 set page address 0 1 0 1 0 1 1 page address set 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 internal status d4=reset, 1=resetting, 0=normal d5=display on/off, 1=off, 0=on d6=adc flag, d7=busy flag, 1=busy, 0=ready 6 write display data 1 1 0 display data write data into the display ram 7 read display data 1 0 1 display data read data form the display ram 8 adc select 0 1 0 1 0 1 0 0 0 0 adc sets the column address direction adc= 0, normal display (seg0 ? seg131) adc=1, flipped in x direction (seg131 ? seg0) 9 normal/reverse display 0 1 0 1 0 1 0 0 1 1 rev rev=0, normal display rev=1, reverse display 10 entire display on 0 1 0 1 0 1 0 0 1 0 eon eon=0, normal display eon=1, entire display on 11 set lcd bias 0 1 0 1 0 1 0 0 0 1 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 1 1 1 0 0 0 0 0 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 1 1 1 0 1 1 1 0 release the ?read-modify-write? mode 14 reset 0 1 0 1 1 1 0 0 0 1 0 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 0 0 1 0 1 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)
topway lcd module user manual LM6029A url: www.topwaydisplay.com www.topwaysz.com document name: LM6029A-manual-rev0.1 page: 9 of 11 4.5 display commands (continue) code no. instructions a0 /rd /wr d7 d6 d5 d4 d3 d2 d1 d0 function 17 regulator resistor select 0 1 000100 ratio setting set the built-in resistor ratio (rb/ra) set reference voltage mode 0 1 010000001 set reference voltage mode 18 set reference voltage register 0 1 0 x x electronic control value set reference goltage register (display contrast value) 20 power save - - - -------- compound instruction: display off + entire display on 21 power save reset - - - -------- compound instruction: display on + entire display off 22 nop 0 1 0 1 1 1 0 0 0 1 1 non-operation command 23 test_1 0 1 0 1 1 1 1 x x x x test command. do not use. 24 test_2 0 1 0 1 0 0 1 x x x x test command. do not use. 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 s6b0724 data sheet. 4.5.1 power off the lcd module it recommends that enter power save mode before power off the lcd module. 4.5.2 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 LM6029A url: www.topwaydisplay.com www.topwaysz.com document name: LM6029A-manual-rev0.1 page: 10 of 11 4.6 basic operating sequence (example) 4.6.1 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 0 0 0 1 0 1 1 0 0 26h turn on the internal voltage converter and wait until vout stable. delay 50ms ---- - -- - - - power control voltage follower = off voltage regulator = on voltage converter = on 0 0 0 1 0 1 1 1 0 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 0 0 0 1 0 1 1 1 1 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 high (lower-4bit=0) 0 0 0 0 0 0 0 0 0 00h 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 LM6029A url: www.topwaydisplay.com www.topwaysz.com document name: LM6029A-manual-rev0.1 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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