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shanghai belling corp., ltd BL55087 BL55087 BL55087 BL55087 zip: 200233 tel: 86-021-648507 00 fax: 86-021-64855865 BL55087version1.0 1 lcd driver for 160 display units BL55087 theBL55087isageneralcoglcddrivericfor160 unitslcdpanel.itfeaturesawide operating supply voltage range, incorporates simple communication interface with microcomputerandissuitableformultipleapplicat ion. 1 1 1 1 features advancedlowpowercmostechnology selectionof1/2or1/3bias,selectionof1/2or1 /3or1/4duty. operationvoltage:2.5~5.5v i 2 c datainterface 160(40x4)displayunits low power dissipation design: power saving mode: i dd=14ua at 5v and idd=9uaat3.3v;sleepingmode:idd<2ua maybecascadedupto2pcsforlargelcdapplication s onchiprcoscillator vlcdforadjustinglcdoperatingvoltage excellentemcimmunity compatiblewithgeneralmicrocomputer package:cog 2 22 2 pin description pin no. pin name function 1~4 1~41~4 1~4 bp0~bp3 bpterminaldrivingoutput 5~44 5~44 5~44 5~44 s0~s39 segmentterminaldrivingoutput 45,46 45,46 45,46 45,46 nc 47,48 47,48 47,48 47,48 sda serialdatainput/output 49,50 49,50 49,50 49,50 scl serialclockinput 51 5151 51 sync cascadesynchronizationclock 52 5252 52 clk externalclockinput osc=0:output osc=1:input 53~57 53~57 53~57 53~57 vdd supplyvoltage 58 5858 58 osc internaloscillatorenableinput 59 5959 59 a0 subaddressinputs 60~64 60~64 60~64 60~64 vss ground 65~69 65~69 65~69 65~69 vlcd lcdsupplyvoltage 70 7070 70 clk externalclockinput osc=0:output osc=1:input 71 7171 71 sync cascadesynchronizationclock 72 7272 72 scl serialclockinput 73 7373 73 sda serialdatainput/output
shanghai belling corp., ltd BL55087 BL55087 BL55087 BL55087 zip: 200233 tel: 86-021-648507 00 fax: 86-021-64855865 BL55087version1.0 2 dice size: 4110um*680um dice size: 4110um*680um dice size: 4110um*680um dice size: 4110um*680um bump height: 15~20um bump height: 15~20um bump height: 15~20um bump height: 15~20um chip thickness: 525um chip thickness: 525um chip thickness: 525um chip thickness: 525um bump pitch: 90um(min.) bump pitch: 90um(min.) bump pitch: 90um(min.) bump pitch: 90um(min.) size size size size item item item item number number number number x xx x y yy y unit unit unit unit chip chip chip chip thickness thickness thickness thickness 500um ( 500um ( 500um ( 500um (? ? ? ? ) )) ) um umum um pad pitch pad pitch pad pitch pad pitch all pad all pad all pad all pad 90 9090 90 um umum um output pad output pad output pad output pad 1~44 1~44 1~44 1~44 32 3232 32 50 5050 50 um umum um in/out pad in/out pad in/out pad in/out pad 47~52,70~73 47~52,70~73 47~52,70~73 47~52,70~73 32 3232 32 50 5050 50 um umum um input pad input pad input pad input pad 58 5858 58 59 5959 59 32 3232 32 50 5050 50 um umum um power/gnd power/gnd power/gnd power/gnd pad padpad pad 53~57 53~57 53~57 53~57 60~69 60~69 60~69 60~69 32 3232 32 50 5050 50 um umum um bump size bump size bump size bump size nc ncnc nc 45 4545 45 46 4646 46 32 3232 32 34 3434 34 um umum um bump height bump height bump height bump height all pad all pad all pad all pad 15~20 15~20 15~20 15~20 um umum um pin configuration: pin configuration: pin configuration: pin configuration: n (0,0) y x 1 5 10 15 20 25 30 35 40 44 bp 0 bp 1 bp 2 bp 3 s0 s1 s3 9 sd a sc l sy n c cl k vl c d vl c d vl c d vl c d vl c d vs s vs s vs s vs s vs s vd d vd d vd d vd d vd d a0 os c cl k sy n c sc l sc l sd a sd a 5 0 32 pad:1~4447~73 3 4 32 pad:45~46 bump size (unit:um) n c n c a l i g n _ a a l i g n _ b 20um 40um 10um 10um 40um 20um 1 0 u m 1 0 u m (-1950,-108) 8 4 18 4 8 28 36 (-1168,-72) unit:um 73 45 46 47 48 49 50 51 52 53 54 55 56 57 60 58 59 61 62 63 64 65 66 67 68 69 72 71 70 20um 40um 10um 10um 1 0 u m 1 0 u m (1950,-108) 20um 20um 20um
shanghai belling corp., ltd BL55087 BL55087 BL55087 BL55087 zip: 200233 tel: 86-021-648507 00 fax: 86-021-64855865 BL55087version1.0 3 package cog pad coordinates pad coordinates pad coordinates pad coordinates coordinates symbol pad x y bp0 1 1935 224.62 bp1 2 1845 224.62 bp2 3 1755 224.62 bp3 4 1665 224.62 s0 5 1575 224.62 s1 6 1485 224.62 s2 7 1395 224.62 s3 8 1305 224.62 s4 9 1215 224.62 s5 10 1125 224.62 s6 11 1035 224.62 s7 12 945 224.62 s8 13 855 224.62 s9 14 765 224.62 s10 15 675 224.62 s11 16 585 224.62 s12 17 495 224.62 s13 18 405 224.62 s14 19 315 224.62 s15 20 225 224.62 s16 21 135 224.62 s17 22 45 224.62 s18 23 45 224.62 s19 24 135 224.62 s20 25 225 224.62 s21 26 315 224.62 s22 27 405 224.62 s23 28 495 224.62 s24 29 585 224.62 s25 30 675 224.62 s26 31 765 224.62 s27 32 855 224.62 s28 33 945 224.62 s29 34 1035 224.62 s30 35 1125 224.62 s31 36 1215 224.62 s32 37 1305 224.62 s33 38 1395 224.62 s34 39 1485 224.62 s35 40 1575 224.62 s36 41 1665 224.62 s37 42 1755 224.62 s38 43 1845 224.62 s39 44 1935 224.62 nc 45 1952.53 202.17 nc 46 1862.53 202.17 sda 47 1145.93 194.17 sda 48 1055.93 194.17 scl 49 965.93 194.17 scl 50 875.93 194.17 sync 51 785.93 194.17
shanghai belling corp., ltd BL55087 BL55087 BL55087 BL55087 zip: 200233 tel: 86-021-648507 00 fax: 86-021-64855865 BL55087version1.0 4 clk 52 695.93 194.17 vdd 53 425.93 194.17 vdd 54 335.93 194.17 vdd 55 245.93 194.17 vdd 56 155.93 194.17 vdd 57 65.93 194.17 osc 58 114.07 194.17 a0 59 204.07 194.17 vss 60 384.07 194.17 vss 61 474.07 194.17 vss 62 564.07 194.17 vss 63 654.07 194.17 vss 64 744.07 194.17 vlcd 65 924.07 194.17 vlcd 66 1014.07 194.17 vlcd 67 1104.07 194.17 vlcd 68 1194.07 194.17 vlcd 69 1284.07 194.17 clk 70 1554.07 194.17 sync 71 1644.07 194.17 scl 72 1824.07 194.17 sda 73 1914.07 194.17 alignment marks alignment marks alignment marks alignment marks item item item item size size size size aligna aligna aligna aligna 20um 40um 10um 10um 40um 20um 1 0 u m 1 0 u m (-1950,-108) alignb alignb alignb alignb 20um 20um 40um 10um 10um 20um 1 0 u m 1 0 u m (1950,-108) 20um note note note note alignment marksare on metal2 alignment marksare on metal2 alignment marksare on metal2 alignment marksare on metal2 under passiation. under passiation. under passiation. under passiation.
shanghai belling corp., ltd BL55087 BL55087 BL55087 BL55087 zip: 200233 tel: 86-021-648507 00 fax: 86-021-64855865 BL55087version1.0 5 3 33 3 block diagram 4 44 4 function description 1. functioncircuit the BL55087 has all function circuits that can dire ctlydriveanystaticor multiplexed lcd containing up to four commons and up to 40 segm ents. the function circuits include:poweronreset,lcdbiasgenerator,lcdvol tageselector,oscillator,displayram, timing, display latch, shift register, common/segme nt outputs, input/output bank selector, blinker,datapointer,subaddresscounter,etc. 2. displayfunctiondescription thedisplayramisastatic40x4bitramwhichsto res lcddata.alogic1inthe rambitmapindicatestheon stateofthecorrespon dinglcdsegment;similarly,a logic0 indicatestheoffstate.thereisaonetoone corr espondencebetweentheramaddressesand thesegmentoutputs,andbetweentheindividualbit sofaramwordandthecommonoutputs. (seefig.2).
shanghai belling corp., ltd BL55087 BL55087 BL55087 BL55087 zip: 200233 tel: 86-021-648507 00 fax: 86-021-64855865 BL55087version1.0 6 display ram address and segment s0~s39 output 0 1 2 3 36 37 38 39 0 1 2 com (com0~ com3) 3 fig2 whendisplaydataistransmittedtothebl550 87,thedisplaybytesreceivedarestored inthedisplayramin accordancewiththeselected lcddrivemode.to illustratethefilling order,anexampleofa7segment numericdisplaysh owingalldrivemodesisgiveninfig.3; theramfillingorganizationdepictedappliesequal lytootherlcdtypes. fig 3 3. i 2 cbusprotocol two i 2 cbus slave addresses (0111000) are reserved for th e BL55087. the least significantbitofthe slaveaddressthataBL55087 willrespondtoisdefined bytheleveltied atitsinputsa0.therefore,two typesofBL55087c anbedistinguishedonthesame i 2 cbus whichallows: 1.upto2BL55087onthesamei2cbusforverylar gelcdapplications. 2.theuseoftwotypesoflcdmultiplexonthesam ei2cbus.
shanghai belling corp., ltd BL55087 BL55087 BL55087 BL55087 zip: 200233 tel: 86-021-648507 00 fax: 86-021-64855865 BL55087version1.0 7 the i2cbus protocol is shown in fig.4. the se quence is initiated with a start condition(s)fromthei2cbus masterwhichisfoll owedbyoneofthetwoBL55087 slave addresses available. two BL55087s with the correspo nding sa0 level acknowledge in parallelwiththe slaveaddressbuttwoBL55087swi ththealternativesa0 levelignorethe whole i2cbus transfer. after acknowledgement, one or more command bytes (m) follow whichdefinethestatusoftheaddressed BL55087s. thelastcommandbyteistaggedwitha cleared most significant bit, the continuation bit c. the command bytes are also acknowledgedbyalladdressedBL55087sonthebus. afterthelastcommandbyte,aseriesof displaydatabytes(n)mayfollow.thesedisplaybyt esarestoredinthe displayramatthe address specified by the data pointer and the subad dress counter. both data pointer and subaddress counter are automatically updated and th e data is directed to the intended BL55087 device.the acknowledgement after each byte is made only by the a0 addressed BL55087.afterthelastdisplaybyte,thei2cbusm asterissuesastopcondition(p). fig 4 4.commanddecoder the command decoder identifies command bytes that a rrive on the i 2 cbus. all availablecommandscarrya continuationbitcinth eirmostsignificantbitposition. thefive commandsavailabletothebl55077aredefinedinfi g5.
shanghai belling corp., ltd BL55087 BL55087 BL55087 BL55087 zip: 200233 tel: 86-021-648507 00 fax: 86-021-64855865 BL55087version1.0 8 fig 5 fig 5 fig 5 fig 5 note 1 in power-saving mode the frequency of scl must be less than 20khz 2 at the bias of 1/3 vdd C vlcd must be more than 2.9v absolute maximum rating parameter symbol rating unit supplyvoltage vdd 0.5 +6.0 v lcdoperatingvoltage vlcd 0 vdd v inputvoltage vi vss0.5 vdd+0.5 v outputvoltage vo vlcd0.5 vdd+0.5 v vdd,vss,vlcdcurrent idd,iss,ilcd 50 +50 ma maximumpowerconsumption ptot 400 mw operatingtemperature topr 40 +75 o c storagetemperature tstg 65 +150 o c tab 6 tab 6 tab 6 tab 6
shanghai belling corp., ltd BL55087 BL55087 BL55087 BL55087 zip: 200233 tel: 86-021-648507 00 fax: 86-021-64855865 BL55087version1.0 9 dc characteristic symbol parameter test condition min typ max unit vdd icoperating voltage 2.5 5.5 v vlcd lcdoperating voltage 0 vdd2 v idd1 supplycurrent vdd5v,vlcd0v,normal mode,internal oscillator 25 50 ua idd2 supplycurrent vdd5v,vlcd0v,power saing mode,internal oscillator 14 30 ua idd3 supplycurrent vdd3.3v,vlcd0v,normal mode,internal oscillator 16 30 ua idd4 supplycurrent vdd3.3v,vlcd0v,power saing mode,internal oscillator 9 15 ua i sl sleepcurrent vdd=5v,vlcd=0v 1.5 2 ua vil lowvoltageinput sda,scl vss 0.3vdd v vih highvoltage input sda,scl 0.7vdd 6.0 v rph pullhighresister sync 30 60 100 k tab 7 ac characteristic ta=25 o c symbol parameter test condition min typ max unit fclk oscillator frequency vdd=5v,normalmode 125 1 80 300 khz fclklp oscillator frequency vdd=3.3v,powersaving mode 21 31 48 khz tclkh/l clktime 1 3 us tsh setupdelaytime 5 us tlow scllowtime 5 us thigh sclhightime 4 us thd pulsedelaytime 250 ns tab 8 tab 8 tab 8 tab 8 5 55 5 cog cog cog cog package package package package g l a s s c h i p ( a c e d o w n ) b u m p c t o
shanghai belling corp., ltd BL55087 BL55087 BL55087 BL55087 zip: 200233 tel: 86-021-648507 00 fax: 86-021-64855865 BL55087version1.0 10 big glass small glass lcd segments and backplanes chip 6. 6. 6. 6. timing waeorms timing waeorms timing waeorms timing waeorms fig fig fig fig 6 66 6 7. 7. 7. 7. typical application circuit no te: 1/ when i 2 c are idle mode,sda and scl must be connect to high level(by pull up resistor),otherwise the device maybe can no t go into power saving mode. 1/ single application n mcu clk (optional) typical system coniguration sd a sc l cl k sy n c vc l d vs s a0 os c vd d sy n c cl k sc l sd a vdd vss vcld bp 0 bp 3 s0 s3 9 lcd panel
shanghai belling corp., ltd BL55087 BL55087 BL55087 BL55087 zip: 200233 tel: 86-021-648507 00 fax: 86-021-64855865 BL55087version1.0 11 2/ cascade app 2/ cascade app 2/ cascade app 2/ cascade application lication lication lication n sd a mcu sc l cl k clk (optional) os c a0 vs s vs s vc l d vc l d vd d vd d sy n c sy n c cl k sc l sd a sd a sc l cl k os c a0 vs s vs s vc l d vc l d vd d vd d sy n c sy n c cl k sc l sd a cascaded coniguration lcd panel bp 0 bp 3 s0 s3 9 bp 0 bp 3 s0 s3 9 open- circuit

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