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product structure silicon monolithic integrated circuit this product has no designed protection against radioactive rays. 1 / 46 tsz02201 - 0a2a0d300110 - 1 - 2 10.apr.2015 rev.006 www.rohm.com ? 2012 rohm co., ltd. all rights reserved. tsz22111 ? 14 ? 001 multi - function lcd segment drivers bu979 81xxx series max 196 segment s (seg49xcom4 ) features ? integrated ram for display data (ddram): 49 x4 bit (max 196 segment) ? lcd dr ive o utput: 4 common o utput, max 49 segment o utput ? integrated 3ch led d river c ir cuit ? segment/ led (max 3port) o utput m ode s electable ? s egment/ gpo (max 31port) o utput m ode s electable ? support pwm generation from e xt . or i nternal c lock (resolution : 8bit m ode/12bit m ode s electable) ? support s tandby m ode ? integrated power - o n - reset c ircuit ( por) ? i ntegrated oscillator cir cuit ? no ex ternal c omponen t ? low p ower c onsumption design ? independent power supply for lcd driving ? support blink f unction (blink f requency 1.6, 2.0, 2.6, 4.0hz s electable) applications ? telephone ? fax ? portable e quipment (pos, ec r, pda etc.) ? dsc ? dvc ? car audio ? home e lectrical a ppliance ? meter e quipment etc. key specifications supply voltage range : + 1.8v to +3.6 v lcd d rive po wer s upply range: + 3.3v to +5.5 v operating t emperature r ange: - 30 c to +75 c max segments : bu97981kv 19 6 segments bu97981muv 168 segments bu 97981gu 196 segments m ax gpo outputs: bu97981kv 31port bu97981muv 27port bu 97981gu 31port max led drive outputs: bu97981kv 3port bu97981muv 3port bu 97981gu 3port display duty: static. 1/3, 1/4 selectable bias: static, 1/3 integrated regulator for lcd drive: 3.2, 3.3, 3.4, 4.4, 4.5, 4.6, 5.0v s electable interface: 3wire s erial i nterface typical application circuit bu97981kv led/gpo using case led : 3port gpo : 5port lcd :164seg figure 1 . typical a pplication c ircuit * reading resistor value please detect the value according to inpu curremt value. (cuurent max = 20ma) 5.0v 3.3v vlcd vdd clkin csb scl sd vss1 bu97981kv lcd com0 to com3 seg0 to seg40 seg48 (led1) input signal from cintroller >( clkin extenal clk input terminal in case being unused, connect to vss or be opened. inhb vss2 test1 vled seg45(gpo1) to seg41(gpo5) other device seg47 (led2) seg46 (led3) datashee t
2 / 46 bu979 81xxx series max 196 segment s (seg49xcom4 ) data s heet tsz02201 - 0a2a0d300110 - 1 - 2 10.apr.2015 rev.006 www.rohm.com ? 2012 rohm co., ltd. all rights reserved. tsz22111 >? 1 5 >? 001 block d iagram / p in arrangement / pin d escription bu9798 1 kv figure 2 . block d iagram figure 3 . p in c onfiguration (top view) table 1. pin d escription terminal terminal number i/o unused case function csb 1 i - chip select: "l" active scl 2 i - serial data transfer clock sd 3 i - input serial data vdd 4 - - power supply for logic clkin 64 i open / vss external c lock input terminal (for display/pwm using selectable) support hi - z input mode at internal clock mode test1 5 i - test terminal (please connect vss terminal) vss1 6 - - gnd vlcd 8 - - power supply for lcd inhb 7 i vdd display turning on/off select term inal h: turning on display, l: turning off display inhb = l: all seg/com terminal : output vss level blink timing generator common counter inhb clkin pwm generator oscillator ref voltage circuit output control le r lcd bias selector common driver power on reset sd scl vss vss com0com3 seg0 seg seg35 seg34 seg33 seg32 seg31 seg30 seg29 seg28 seg27 seg26 seg25 seg24 seg23 seg22 seg21 seg20 seg36 seg19 seg37 seg18 seg38 seg17 seg39 seg16 seg40 seg15 seg41 seg14 seg42 seg13 seg43 seg12 seg44 seg11 seg45 seg10 seg46 seg9 seg47 seg8 seg48 seg7 vss2 seg6 pwmout seg5 clkin seg4 49 64 17 32 1 16 33 48 csb scl sd vdd test1 vss1 inhb vlcd com0 com1 com2 com3 seg0 seg1 seg2 seg3 1 16
3 / 46 bu979 81xxx series max 196 segment s (seg49xcom4 ) data s heet tsz02201 - 0a2a0d300110 - 1 - 2 10.apr.2015 rev.006 www.rohm.com ? 2012 rohm co., ltd. all rights reserved. tsz22111 >? 1 5 >? 001 b link timing generator common counter inhb clkin pwm generator ref voltage circuit lcd bias selector common driver power on reset sd scl vss vss com0com seg0 .seg48 0 . inhb = l: all seg/com terminal : output vss level csb scl sd vdd test1 1 2 3 4 5 6 7 8 9 10 42 41 40 39 38 37 36 35 34 33 56 55 54 53 52 51 50 49 48 47 15 16 17 18 19 20 21 22 23 24 ext - pad 46 45 44 43 32 31 29 25 26 27 28 11 12 13 14 30 vss1 inhb vlcd com0 com1 com2 com3 seg0 seg1 seg29 seg28 seg27 seg26 seg25 seg24 seg23 seg22 seg21 seg20 seg19 seg18 seg17 seg16 seg2 seg3 seg4 seg5 seg6 seg7 seg8 seg9 seg10 seg11 seg12 seg13 seg14 seg15 clkin vss2 seg41 seg40 seg39 seg38 seg37 seg36 seg35 seg34 seg33 seg32 seg31 seg30
4 / 46 bu979 81xxx series max 196 segment s (seg49xcom4 ) data s heet tsz02201 - 0a2a0d300110 - 1 - 2 10.apr.2015 rev.006 www.rohm.com ? 2012 rohm co., ltd. all rights reserved. tsz22111 >? 1 5 >? 001 block d ia gram / p in arrangement / pin d escription bu 97981gu figure 6. block d iagram figure 7. p in c onfiguration (top view) table 3. pin d escription terminal i/o unused case function csb i - chip select: "l" active scl i - serial data transfer clock sd i - input serial data vdd - - power supply for logic clkin i open / vss external clock input t erminal (for display/pwm using selectable) support hi - z input mode at internal clock mode vss1 - - gnd vlcd - - power supply for lcd inhb i vdd display turning on/off select terminal h: turning on display, l: turning off display inhb = l: all seg/com blink timing generator common counter inhb clkin pwm generator oscillator ref voltage circuit output control le r lcd bias selector common driver power on reset sd scl vss vss com0com3 seg0 seg
5 / 46 bu979 81xxx series max 196 segment s (seg49xcom4 ) data s heet tsz02201 - 0a2a0d300110 - 1 - 2 10.apr.2015 rev.006 www.rohm.com ? 2012 rohm co., ltd. all rights reserved. tsz22111 >? 1 5 >? 001 absolute m aximum r atings (vss=0v) parameter symbol ratings unit remarks power s upply v oltage 1 vdd - 0.3 to +4.5 v power supply power s upply v olta ge 2 vlcd - 0.5 to +7.0 v power supply for lcd power d issipation pd 1.0 (note1) w bu97981kv 3.6 (note2) bu97981muv 0.8 (note3) bu97981gu input v oltage r ange vin - 0.5 to vdd+0.5 v operational t emperature r ange topr - 30 to +75 c storage t empera ture r ange tstg - 55 to +125 c outpu t c urrent iout1 5 ma seg output iout2 5 ma com output iout3 10 ma gpo output iout4 50 ma led output (note1) when use more than ta=25 c , subtract 10 mw per degree. ( using rohm standard board ) ( board size >8 7 0 mm7 0 mm1.6mm material: fr4 board copper foil: land pattern only ) . (note2) when use more than ta=25 c , subtract 36 mw per degree. ( using rohm standard board ) ( board size >8 74.2 mm 74.2 mm1.6mm semi standard 4 layer board) (note3) when operated higher than ta=25 c , subtract 8.0mw per degree. ( using rohm standard board ) ( board size >8 114.3mm76.2mm1.6mm ) caution: oper ating the ic over the absolute maximum ratings may damage the ic. the damage can either be a short circuit between pins or an open circ uit between pins and the internal circuitry. therefore, it is important to consider circuit protection measures, such as adding a fuse, in case the ic is operated over the absolute maximum ratings. recommended operating conditions (ta= - 3 0 c to +7 5 c ,vss= 0v) parameter symbol ratings unit remarks m in typ max power s upply v oltage 1 vdd 1.8 - 3.6 v power supply power s upply v oltage 2 vlcd 3.3 - 5.5 v power supply for lcd led s upply v oltage vled 1.0 - vlcd v power supply for led output c urrent iout4 - - 20 ma per led port 1ch iout4 - - 60 ma total led port current
6 / 46 bu979 81xxx series max 196 segment s (seg49xcom4 ) data s heet tsz02201 - 0a2a0d300110 - 1 - 2 10.apr.2015 rev.006 www.rohm.com ? 2012 rohm co., ltd. all rights reserved. tsz22111 >? 1 5 >? 001 electrical c haracteristics dc characteristics (ta= - 30 c to + 75 c , vdd=1.8v to 3.6v, vlcd=3.3v to 5.5v, vss=0) (bu9798 1kv ,bu97981gu ) parameter symbol limit s unit condition s m in typ ma x h level l level h l h l input terminal all?l?, input terminal all?l?,
7 / 46 bu979 81xxx series max 196 segment s (seg49xcom4 ) data s heet tsz02201 - 0a2a0d300110 - 1 - 2 10.apr.2015 rev.006 www.rohm.com ? 2012 rohm co., ltd. all rights reserved. tsz22111 >? 1 5 >? 001 electrical c haracteristics C h level l level h level l level h l input terminal all?l?, input terminal all?l?,
8 / 46 bu979 81xxx series max 196 segment s (seg49xcom4 ) data s heet tsz02201 - 0a2a0d300110 - 1 - 2 10.apr.2015 rev.006 www.rohm.com ? 2012 rohm co., ltd. all rights reserved. tsz22111 >? 1 5 >? 001 electrical c haracteristics C C
9 / 46 bu979 81xxx series max 196 segment s (seg49xcom4 ) data s heet tsz02201 - 0a2a0d300110 - 1 - 2 10.apr.2015 rev.006 www.rohm.com ? 2012 rohm co., ltd. all rights reserved. tsz22111 >? 1 5 >? 001 mpu interface cha racteristics (ta= - 30 c to + 75 c, vdd=1.8v to 3.6v, vlcd=3.3v to 5.5v, vss=0) parameter symbol limit s unit condition s m in typ max input r ise t ime tr - - 50 ns input f all t ime tf - - 50 ns scl c ycle t ime tscyc 250 - - ns h scl l h csb csb scl sd tcsh tscyc tslw tshw tsds tsdh tf tr tcss tchw
10 / 46 bu979 81xxx series max 196 segment s (seg49xcom4 ) data s heet tsz02201 - 0a2a0d300110 - 1 - 2 10.apr.2015 rev.006 www.rohm.com ? 2012 rohm co., ltd. all rights reserved. tsz22111 >? 1 5 >? 001 i / o e quivalen ce c ircuit (bu9798 1 kv) figure 9 . i / o equivalen ce c ircuit vdd test1 vss vlcd seg15 - 45 vss1 vdd vss1 vlcd vss1 vdd pwmout vss1 vd d seg0 - 14 com0 - 3 vss1 vlcd seg46 - 48 vss1 vss2 vss vdd csb, sd, scl,inhb clkin
11 / 46 bu979 81xxx series max 196 segment s (seg49xcom4 ) data s heet tsz02201 - 0a2a0d300110 - 1 - 2 10.apr.2015 rev.006 www.rohm.com ? 2012 rohm co., ltd. all rights reserved. tsz22111 >? 1 5 >? 001 i/o e quivalen ce c ircuit = c ontinued (bu9798 1muv ) figur e 10 . i / o equivalen ce c ircuit vdd test1 vss vlcd seg1 2 - 38 vss1 vdd vss1 vlcd vss1 vd d seg0 - 1 1 com0 - 3 vss1 vlcd seg 39 - 4 1 vss1 vss2 vss vdd csb, sd, scl,inhb clkin
12 / 46 bu979 81xxx series max 196 segment s (seg49xcom4 ) data s heet tsz02201 - 0a2a0d300110 - 1 - 2 10.apr.2015 rev.006 www.rohm.com ? 2012 rohm co., ltd. all rights reserved. tsz22111 >? 1 5 >? 001 i / o e quivalen ce c ircuit = continued (bu 97981gu ) figure 11. i / o equivalen ce c ircuit vlcd seg15 - 45 vss1 vdd vss1 vlcd vss1 vdd pw mout vss1 vd d seg0 - 14 com0 - 3 vss1 vlcd seg46 - 48 vss1 vss2 vss vdd csb, sd, scl,inhb clkin
13 / 46 bu979 81xxx series max 196 segment s (seg49xcom4 ) data s heet tsz02201 - 0a2a0d300110 - 1 - 2 10.apr.2015 rev.006 www.rohm.com ? 2012 rohm co., ltd. all rights reserved. tsz22111 >? 1 5 >? 001 example of r ecommended c ircuit (bu97981kv) 1. led/gpo u sing c ase 2. seg output only c ase figure 12 . bu97981kv e.g. of recommended c ircuit [led]&[gpo] 5.0v 3.3v vlcd vdd clkin csb scl sd vss1 bu97981kv lcd com0 >| com3 seg0 >| seg40 seg48 (led1) input signal from controller clkin external clk input terminal in case being unused, connect to vss. regarding resistor value please detect the value according to input current value. (current max = 20ma) inhb vss2 test1 vled seg45(gpo1) >| seg41(gpo5) led >8 3port gpo >8 5port lcd >8 164segments other device seg47 (led2) seg46 (led3) 5.0v 3.3v vlcd vdd clkin csb scl sd vss1 bu97981kv lcd com0 >| com3 seg0 >| seg48 input signal from controller clkin external clk input teminal in case being unused, connect to vss. inhb vss2 test1
14 / 46 bu979 81xxx series max 196 segment s (seg49xcom4 ) data s heet tsz02201 - 0a2a0d300110 - 1 - 2 10.apr.2015 rev.006 www.rohm.com ? 2012 rohm co., ltd. all rights reserved. tsz22111 >? 1 5 >? 001 example of r ecommended c ircuit C 5.0v 3.3v vlcd vdd clkin csb scl sd vss1 bu97981muv lcd com0 >| com3 seg0 >| seg33 seg39 (led1) input signal from controller clkin external clk input terminal in case being unused, connect to vss. regarding resistor value please detect the value according to input current value. (current max = 20ma) inhb vss2 vled seg38(gpo1) >| seg34(gpo5) led >8 3port gpo >8 5port lcd >8 136segments other device seg40 (led2) seg41 (led3) test1 5.0v 3.3v vlcd vdd clkin csb scl sd vss1 bu97981muv lcd com0 >| com3 seg0 >| seg41 input signal from controller clkin external clk input teminal in case being unused, connect to vss. inhb vss2 test1
15 / 46 bu979 81xxx series max 196 segment s (seg49xcom4 ) data s heet tsz02201 - 0a2a0d300110 - 1 - 2 10.apr.2015 rev.006 www.rohm.com ? 2012 rohm co., ltd. all rights reserved. tsz22111 >? 1 5 >? 001 example of r ecommended c ircuit C 5.0v 3.3v vlcd vdd clkin csb scl sd vss1 bu97981gu lcd com0 >| com3 seg0 >| seg40 seg48 (led1) input signal from controller clkin external clk input terminal in case being unused, connect to vss. regarding resistor value please detect the value according to input current value. (current max = 20ma) inhb vss2 vled seg45(gpo1) >| seg41(gpo5) led >8 3port gpo >8 5port lcd >8 164segments other device seg47 (led2) seg46 (led3) 5.0v 3.3v vlcd vdd clkin csb scl sd vss1 bu97981gu lcd com0 >| com3 seg0 >| seg48 input signal from controller >( clkin external clk input teminal in case being unused, connect to vss. inhb vss2
16 / 46 bu979 81xxx series max 196 segment s (seg49xcom4 ) data s heet tsz02201 - 0a2a0d300110 - 1 - 2 10.apr.2015 rev.006 www.rohm.com ? 2012 rohm co., ltd. all rights reserved. tsz22111 >? 1 5 >? 001 function d escriptions command and d ata t ransfer m ethod 3 - spi (3 wire s erial interface) this device is controlled by 3 - wire signal ( csb, scl, and sd). first, interface counter is initialized with csb=h and csb=l makes sd an and continuously in order of d6 to d0 are followed after csb =l. when csb rise from l to h, and at this time sending commands are less than 8bit, command and data transfer are canceled. to start sending command again, please fall csb=l and s in this case, please rise csb=h and fall csb=l, after this sequence device rel d/c d/c d3 d6 d0 d0 d6 d6 d5 d4 d3 d1 d0 d/c d4 d3 d2 d1 scl csb sd d/c 3rd byte command d2 1st byte command 2nd byte command d4 d6 d5 d1 d2 d5
17 / 46 bu979 81xxx series max 196 segment s (seg49xcom4 ) data s heet tsz02201 - 0a2a0d300110 - 1 - 2 10.apr.2015 rev.006 www.rohm.com ? 2012 rohm co., ltd. all rights reserved. tsz22111 >? 1 5 >? 001 write d isplay d ata and t ransfer m ethod this device has display data ram (ddram) of 494=196bit. the relationship between data input and display data, ddram data and address are as follows. according to this comma nd, 8bit binary data will write to ddram. the address which starts data writing is specified by a command, and increment after finish writing display data every 4 bit. ??? . in case csb change from l to h before 4bits data transfer finish, ram write is canceled. 10000011 1st byte command a p 00000000 address set command 10100000 ram write 2nd byte command b display ram data c d e f g h i j k l m n o p
18 / 46 bu979 81xxx series max 196 segment s (seg49xcom4 ) data s heet tsz02201 - 0a2a0d300110 - 1 - 2 10.apr.2015 rev.006 www.rohm.com ? 2012 rohm co., ltd. all rights reserved. tsz22111 >? 1 5 >? 001 figure 1 6 . d isplay d ata t ransfer m ethod blink f unction this device has blink fun ction. blink function is able to set each segment port individually. blink on/off and blink frequency are set by the blkset command. blink frequency varies, according to fclk characteristics. blink setup of each segments are controlled by blkwr command. t he write start address is specified by b command. and this address will increment after finish writing blink 1, n the other hand data is 0
19 / 46 bu979 81xxx series max 196 segment s (seg49xcom4 ) data s heet tsz02201 - 0a2a0d300110 - 1 - 2 10.apr.2015 rev.006 www.rohm.com ? 2012 rohm co., ltd. all rights reserved. tsz22111 >? 1 5 >? 001 (bu97981kv , bu 97981gu ) blink ram address 00 01 02 03 04 05 06 07 2fh 30h 31h bit 0 a e i m dummy address com0 1 b f j n com1 2 c g k o com2 3 d h l p com3 seg 0 seg 1 seg 2 seg 3 seg 4 seg 5 seg 6 seg 7 seg 47 seg 48 (bu97981muv) blink ram address 00 01 02 03 04 29 2a 2fh 30h 31h bit 0 a e i m dummy address com0 1 b f j n com1 2 c g k o com2 3 d h l p com3 seg 0 seg 1 seg 2 seg 3 seg 4 seg 41 figure 1 7 . blink o peration dummy data seg a seg b seg c seg d seg a seg b seg c seg d seg a seg b seg c seg d seg a seg b seg c seg d seg a seg b seg c seg d seg a seg b seg c seg d blink frequency under the 2hz stting segment output will blink every 0.5 second (on->off->on) sega/b is blink segment output blink ram data ddram data
20 / 46 bu979 81xxx series max 196 segment s (seg49xcom4 ) data s heet tsz02201 - 0a2a0d300110 - 1 - 2 10.apr.2015 rev.006 www.rohm.com ? 2012 rohm co., ltd. all rights reserved. tsz22111 >? 1 5 >? 001 lcd driver bias/duty circuit t his lsi generates lcd driving voltage with on - chip buffer amp. and it can drive lcd at low power consumption line and frame inversion can be set in modeset command. 1/4duty, 1/3duty and static mode can be set disctl command. about each lcd driving wavefor m, please refer to lcd driving waveform descriptions. set pwm1 signal h set pwm2 signal h width for led2
21 / 46 bu979 81xxx series max 196 segment s (seg49xcom4 ) data s heet tsz02201 - 0a2a0d300110 - 1 - 2 10.apr.2015 rev.006 www.rohm.com ? 2012 rohm co., ltd. all rights reserved. tsz22111 >? 1 5 >? 001 command d etail d escriptions d/c, data / command judgment bit (msb) detail, please re fer to 3wire serial i/f mode set (modeset) msb lsb d/c d6 d5 d4 d3 d2 d1 d0 hex reset 1 st byte command 1 0 0 0 0 0 0 1 81h - 2 nd byte command 0 0 0 0 p3 p2 p1 p0 - 00h display set conditio n p3 reset state display off 0 ? display on 1 display off : no lcd driving mode (output: vss level) turn off osc circuit and lcd power supply circuit. (synchronized with frame freq) display on : lcd driving mode turn on osc circuit and lcd power supply circuit. read data from ddram a nd display to lcd. led port and gpo port output state are not influenced by a display on/off state output state is decided by command setup (gposet, outset1, outset2, pwm1set, pwm2set) and inhb terminal state. about detail, please refer to each command de scription. lcd drive mode set condition p2 reset state frame inversion 0 ? line inversion 1 current mode set condition p1 p0 reset state power save mode1 0 0 ? power save mode2 0 1 normal mode 1 0 high power mode 1 1 (reference data of consumption current) condition current consumption power save mode 1 1.0 powe r save mode 2 1.7 normal mode 2.7 high power mode 5.0 the value changes according to the panel load.
22 / 46 bu979 81xxx series max 196 segment s (seg49xcom4 ) data s heet tsz02201 - 0a2a0d300110 - 1 - 2 10.apr.2015 rev.006 www.rohm.com ? 2012 rohm co., ltd. all rights reserved. tsz22111 >? 1 5 >? 001 display c ontrol (disctl) msb lsb d/c d6 d5 d4 d3 d2 d1 d0 hex reset 1 st byte command 1 0 0 0 0 0 1 0 82h - 2 nd byte command 0 0 0 0 p3 p2 p1 p0 - 02h duty s et condition p3 p2 reset state 1/4 duty (1/3bias) 0 0 ? 1/3duty (1/3bias) 0 1 static (1/1bias) 1 * *: don?t care output waveform, under the each bias/duty set up, are shown at lcd driver bias/duty circuit description. osc (measurement value) x divide number
23 / 46 bu979 81xxx series max 196 segment s (seg49xcom4 ) data s heet tsz02201 - 0a2a0d300110 - 1 - 2 10.apr.2015 rev.006 www.rohm.com ? 2012 rohm co., ltd. all rights reserved. tsz22111 >? 1 5 >? 001 address s et (adset) msb lsb d/c d6 d5 d4 d3 d2 d1 d0 hex reset 1 st byte command 1 0 0 0 0 0 1 1 83h - 2 nd byte command 0 0 p5 p4 p3 p2 p1 p0 - 00h set sta rt address to write ddram data. the address can be set from 00h to 30h. (address 31h is used at dummy address) do not set other address. (except 00h to 31h address is not acceptable.) in case, write data to ddram, please send ramwr command certainly. blin k s et (blkset) msb lsb d/c d6 d5 d4 d3 d2 d1 d0 hex reset 1 st byte command 1 0 0 0 0 1 0 0 84h - 2 nd byte command 0 0 0 0 0 p2 p1 p0 - 00h set blink on/off. about detail, please refer to a k function. *: don?t care
24 / 46 bu979 81xxx series max 196 segment s (seg49xcom4 ) data s heet tsz02201 - 0a2a0d300110 - 1 - 2 10.apr.2015 rev.006 www.rohm.com ? 2012 rohm co., ltd. all rights reserved. tsz22111 >? 1 5 >? 001 seg/gpo p ort c hange (outset1) msb lsb d/c d6 d5 d4 d3 d2 d1 d0 hex reset 1 st byte command 1 0 0 0 1 0 0 0 88h - 2 nd byte command 0 0 0 p4 p3 p2 p1 p0 - 00h set output mode, segment output or gpo output. p4 to p0: select changing port number . (seg15 to seg45 ports are seg mode/gpo mode selectable) in case, gpo output is selected, terminal output data is set by gposet command. ex) in case seg45 po rt assigned to gpo, if gpo1 data is h, gpo1 (seg45) port outputs h (vlcd level). if gpo1 data is l, gpo1 (seg45) port outputs l (vss level). ? ? ? ? ? ? ? ? ? ? ? ? C
25 / 46 bu979 81xxx series max 196 segment s (seg49xcom4 ) data s heet tsz02201 - 0a2a0d300110 - 1 - 2 10.apr.2015 rev.006 www.rohm.com ? 2012 rohm co., ltd. all rights reserved. tsz22111 >? 1 5 >? 001 change c ommand of a seg/led port (outset2) msb lsb d/c d6 d5 d4 d3 d2 d1 d0 hex reset 1 st byte command 1 0 0 0 1 0 0 1 89h - 2 nd byte command 0 0 0 0 0 p2 p1 p0 - 00h this command affects segment port/led port selection and pwm resolution set up. p2: resolution setting setting p2 reset condition 12bit r esolution mode 0 ? 8bit r esolution mode 1 p1 to p0 : selec t seg driving mode or led driving mode, this command affect at seg46 to seg48 port. the effective address is 00h to 03h. in case led driving mode is selected, output turns into nmos open drain
26 / 46 bu979 81xxx series max 196 segment s (seg49xcom4 ) data s heet tsz02201 - 0a2a0d300110 - 1 - 2 10.apr.2015 rev.006 www.rohm.com ? 2012 rohm co., ltd. all rights reserved. tsz22111 >? 1 5 >? 001 led1 d rive - c ontrol (pwm1 h width control) according to pwm1set command, led1 driving signal is adjustable. pwm h width is adjustable by 12bit/8bit led driving period is decided by the h width of pwm signal, generated by pwm generator circuit. inhb=h : led port output led driving signal. inhb=l : led port output hi pwm h width calculation pwm cycle and pwm h width, decided by pwm clock cycle is described as follows. (pwm clock cycle is a minimum unit of pwm h width) C hi low
27 / 46 bu979 81xxx series max 196 segment s (seg49xcom4 ) data s heet tsz02201 - 0a2a0d300110 - 1 - 2 10.apr.2015 rev.006 www.rohm.com ? 2012 rohm co., ltd. all rights reserved. tsz22111 >? 1 5 >? 001 led2 to 3 d rive - c ontrol (pwm2 h width control) according to pwm2set command, led2 driving signal, led3 driving signal, and pwmout output h width are ustable. pwm h width is adjustable by 12bit/8bit resolution. led driving period is decided by the h width of pwm signal, generated inhb=h : led port output led driving signal, pwmout port output pwm signal. inhb=l : led port output hi z, pwmout port output l pwm h width calculation pwm cycle and pwm h width, decided by pwm clock cycle is described as follows. (pwm clock cycle is a minimum unit of pwm h width) C hi low
28 / 46 bu979 81xxx series max 196 segment s (seg49xcom4 ) data s heet tsz02201 - 0a2a0d300110 - 1 - 2 10.apr.2015 rev.006 www.rohm.com ? 2012 rohm co., ltd. all rights reserved. tsz22111 >? 1 5 >? 001 ram write (ramwr) msb lsb d/c d6 d5 d4 d3 d2 d1 d0 hex reset 1 st byte command 1 0 1 0 0 0 0 0 a0h - 2 nd byte command display data random
29 / 46 bu979 81xxx series max 196 segment s (seg49xcom4 ) data s heet tsz02201 - 0a2a0d300110 - 1 - 2 10.apr.2015 rev.006 www.rohm.com ? 2012 rohm co., ltd. all rights reserved. tsz22111 >? 1 5 >? 001 osc e xternal i nput c ommand (oscset) msb lsb d/c d6 d5 d4 d3 d2 d1 d0 hex reset 1 st byte command 1 0 0 1 1 0 0 0 98h - 2 nd byte command 0 0 0 0 0 p2 p 1 p0 - 00h according to the command, 4type of clock mode selectable include external clock input mode. detail of this command function as follows. condition p2 p1 p0 reset state internal clk (pwm generation off) 0 0 0 ? external clk input for pwm ( pwm generation off) 0 0 1 internal clk (pwm generation on) 0 1 0 external clk input for pwm (pwm generation on) 0 1 1 external clk input for display (rohm use only) 1 * * *: don?t care l output
30 / 46 bu979 81xxx series max 196 segment s (seg49xcom4 ) data s heet tsz02201 - 0a2a0d300110 - 1 - 2 10.apr.2015 rev.006 www.rohm.com ? 2012 rohm co., ltd. all rights reserved. tsz22111 >? 1 5 >? 001 integrated r egulator s etting (regset) msb lsb d/c d6 d5 d4 d3 d2 d1 d0 hex reset 1 st byte command 1 0 0 1 1 0 0 1 99h - 2 nd byte command 0 0 0 0 0 p2 p1 p0 - 00h set integrated regulator output voltage (vreg). integrated regulator is turned on/off according to dispon/off state that controlled by modeset command. setting p2 p1 p0 reset state off (vlcd voltage) 0 0 0
31 / 46 bu979 81xxx series max 196 segment s (seg49xcom4 ) data s heet tsz02201 - 0a2a0d300110 - 1 - 2 10.apr.2015 rev.006 www.rohm.com ? 2012 rohm co., ltd. all rights reserved. tsz22111 >? 1 5 >? 001 gpo o utput s et c ommand (gposet) msb lsb d/c d6 d5 d4 d3 d2 d1 d0 hex reset 1 st byte command 1 0 0 1 1 0 1 0 9ah - 2 nd byte command gpo output data: p7 to p0 - 00h 3 rd byte command gpo output data: p15 to p8 - 00h 4 th byte command gpo o utput data: p23 to 16 - 00h 5 th byte command * gpo output data: p30 to 24 - 00h *: don?t care in case inhb=h, gpo output signal according to gposet data, on the other hand, in ca se inhb=l gpo
32 / 46 bu979 81xxx series max 196 segment s (seg49xcom4 ) data s heet tsz02201 - 0a2a0d300110 - 1 - 2 10.apr.2015 rev.006 www.rohm.com ? 2012 rohm co., ltd. all rights reserved. tsz22111 >? 1 5 >? 001 lcd d riving w aveform figure 1 9 . waveform of l ine i nversion figure 20 . waveform of f rame i nversion 1/4duty line inversion frame inversion 1frame 1frame com0 com0 com1 com1 com2 com2 com3 com3 segn segn segn+1 segn+1 segn+2 segn+2 segn+3 segn+3 statea statea (com0-segn) (com0-segn) stateb stateb (com1-segn) (com1-segn) segn+2 segn+3 com2 com3 com0 statea segn+2 segn+3 com1 stateb segn segn+1 com3 statea segn segn+1 com0 com1 com2 stateb vss vreg vss vreg vss vreg vss vreg vss vreg vss vreg vss vreg vss vreg vreg -vreg vreg -vreg vss vreg vss vreg vss vreg vss vreg vss vreg vss vreg vss vreg vss vreg vreg -vreg vreg -vreg
33 / 46 bu979 81xxx series max 196 segment s (seg49xcom4 ) data s heet tsz02201 - 0a2a0d300110 - 1 - 2 10.apr.2015 rev.006 www.rohm.com ? 2012 rohm co., ltd. all rights reserved. tsz22111 >? 1 5 >? 001 figure 21 . waveform of l ine i nversion figure 22 . waveform of f rame i nversion 1/3duty line inversion frame inversion 1frame 1frame com0 com0 com1 com1 com2 com2 com3 com3 segn segn segn+1 segn+1 segn+2 segn+2 segn+3 segn+3 statea statea (com0-segn) (com0-segn) stateb stateb (com1-segn) (com1-segn) segn+2 segn+3 com3 statea segn segn+1 com0 com1 com2 stateb segn+2 segn+3 com0 statea segn segn+1 com1 stateb com2 com3 vss vreg vss vreg vss vreg vss vreg vss vreg vss vreg vss vreg vreg -vreg vreg -vreg vss vreg vss vreg vss vreg vss vreg vss vreg vss vreg vss vreg vss vreg vreg -vreg vreg -vreg vss vreg when 1/3duty com3 and com1 is same when 1/3duty com3 and com1 is same when 1/3duty com3 and com1 is same
34 / 46 bu979 81xxx series max 196 segment s (seg49xcom4 ) data s heet tsz02201 - 0a2a0d300110 - 1 - 2 10.apr.2015 rev.006 www.rohm.com ? 2012 rohm co., ltd. all rights reserved. tsz22111 >? 1 5 >? 001 figure 23 . waveform of l ine i nversion figure 2 4 . waveform of f rame i nversion 1/1duty (static) line inversion frame inversion 1frame 1frame com0 com0 com1 com1 com2 com2 com3 com3 segn segn segn+1 segn+1 segn+2 segn+2 segn+3 segn+3 statea statea stateb stateb com2 com3 stateb stateb com1 segn+2 segn+3 com0 statea segn segn+1 segn+2 segn+3 com3 statea segn segn+1 com0 com1 com2 vss vreg vss vreg vss vreg vss vreg vss vreg vss vreg vss vreg vreg -vreg vreg -vreg vss vreg vss vreg vss vreg vss vreg vss vreg vss vreg vss vreg vss vreg vreg -vreg vreg -vreg vss vreg when 1/1duty (static) com1 / com0 is same waveform com2 / com0 is same waveform when 1/1duty (static) com1 / com0 is same waveform com2 / com0 is same waveform when 1/1duty (static) com1 / com0 is same waveform com2 / com0 is same waveform com3 / com0 is same waveform
35 / 46 bu979 81xxx series max 196 segment s (seg49xcom4 ) data s heet tsz02201 - 0a2a0d300110 - 1 - 2 10.apr.2015 rev.006 www.rohm.com ? 2012 rohm co., ltd. all rights reserved. tsz22111 >? 1 5 >? 001 i nitialize sequence please input sequence listed below, before start lcd driving. (refer to power on/off seq uence) inhb=?l? csb ?h? interface initializing csb ?l? interface software reset display off display on ?h?
36 / 46 bu979 81xxx series max 196 segment s (seg49xcom4 ) data s heet tsz02201 - 0a2a0d300110 - 1 - 2 10.apr.2015 rev.006 www.rohm.com ? 2012 rohm co., ltd. all rights reserved. tsz22111 >? 1 5 >? 001 cautions of power - on/ power - off condition por circuit this lsi has p.o.r (power csb=l h condition after csbhl, execute s =l h vdd csb min 1ms min 50ns swrs t command recommendation condition of tr, tf, toff, vbot tr toff vbot vdet less than 10ms over 1ms less than 0.5v typ 1.2 v vdd tr toff vbot fig 18 : power on/off wave form * vdet : por detect level vdet
37 / 46 bu979 81xxx series max 196 segment s (seg49xcom4 ) data s heet tsz02201 - 0a2a0d300110 - 1 - 2 10.apr.2015 rev.006 www.rohm.com ? 2012 rohm co., ltd. all rights reserved. tsz22111 >? 1 5 >? 001 power on/off s equence display on/off control by i nhb terminal is not asynchronous frame cycle. to prevent incorrect display, malfunction and abnormal current, vdd must be turned on before vlcd in power up sequence. vdd must be turned off after vlcd in power down sequence. please set inhb terminal ="l" du ring power on/off sequence . please satisfies vlcd please satisfies vlcdvdd vlcdvdd vlcdvdd mode set display o vlcd vdd inh command swrst mode set display off ram write blink ram write vdd min 10% 10% t 1 t2 vdd min mode set display on outset2 v le d various setup mode set display o vlcd vdd inh command swrst mode set display off various setup ram write blink ram write vdd min 10% 10% t 1 t2 vdd min mod e set display on r egset mode set display o vlcd vdd inh command swrst mode set display off various setup ram w rite blink ram write mode set display on vdd min 10% 10% t 1 t2 vdd min
38 / 46 bu979 81xxx series max 196 segment s (seg49xcom4 ) data s heet tsz02201 - 0a2a0d300110 - 1 - 2 10.apr.2015 rev.006 www.rohm.com ? 2012 rohm co., ltd. all rights reserved. tsz22111 >? 1 5 >? 001 attention a bout i nput p ort p ull d own satisfy the followi ng sequence if input terminals are pulled down by external resisters (in case mpu output hi - z). f igure 30 . r ecommen ded sequence when input ports are pulled down bu97981kv / bu9798mu v /bu 97981gu a dopts a 5v tolerant i/o fo r the digital input. this circuit includes a bus - hold function to keep the level of high. a pull down resistor of below 10k 0 shall be connected to the input terminal s to transit from high to low because the bus - hold transistor turns on during the input ? ? ? scl sd csb date transaction period with mpu input "l" period input"hi-z" period
39 / 46 bu979 81xxx series max 196 segment s (seg49xcom4 ) data s heet tsz02201 - 0a2a0d300110 - 1 - 2 10.apr.2015 rev.006 www.rohm.com ? 2012 rohm co., ltd. all rights reserved. tsz22111 >? 1 5 >? 001 operational notes 1. reverse c onnection of p ower s upply connecting the power sup ply in reverse polarity can damage the ic. take pr ecautions against reverse polarity when connecting the power supply , such as mounting an external diode between the power supply and the ic ? subject the ic to stress. always discharge capacitors completely after each process or step. the ic?s power supply
40 / 46 bu979 81xxx series max 196 segment s (seg49xcom4 ) data s heet tsz02201 - 0a2a0d300110 - 1 - 2 10.apr.2015 rev.006 www.rohm.com ? 2012 rohm co., ltd. all rights reserved. tsz22111 >? 1 5 >? 001 operational notes C
41 / 46 bu979 81xxx series max 196 segment s (seg49xcom4 ) data s heet tsz02201 - 0a2a0d300110 - 1 - 2 10.apr.2015 rev.006 www.rohm.com ? 2012 rohm co., ltd. all rights reserved. tsz22111 >? 1 5 >? 001 ordering information b u 9 7 9 8 1 x x x - e 2 part number package packaging and forming specification e2: embossed tape and reel (vqfp64, vqfn56av8 080) kv muv gu : vqfp64 : vqfn56av8080 : vbga64t050a b u 9 7 9 8 1 g u - z e 2 part number package packaging and forming specification e2: embossed tape and reel ( vbga64t050a ) gu : vbga64 t050a lineup package orderable part number vqfp 64 reel of 10 0 0 bu97981kv - e 2 v qfn56av8080 reel of 1000 bu97 9 81 muv - e2 vbga64t050a reel of 2500 bu 97981gu - z e2
42 / 46 bu979 81xxx series max 196 segment s (seg49xcom4 ) data s heet tsz02201 - 0a2a0d300110 - 1 - 2 10.apr.2015 rev.006 www.rohm.com ? 2012 rohm co., ltd. all rights reserved. tsz22111 >? 1 5 >? 001 physical dimension , tape and reel information package name vqfp 64 >& unit >8 mm >' pkg >8 vqfp 64 d rawing: ex252 - 5001 - 1
43 / 46 bu979 81xxx series max 196 segment s (seg49xcom4 ) data s heet tsz02201 - 0a2a0d300110 - 1 - 2 10.apr.2015 rev.006 www.rohm.com ? 2012 rohm co., ltd. all rights reserved. tsz22111 >? 1 5 >? 001 package name vqf n56av8080
44 / 46 bu979 81xxx series max 196 segment s (seg49xcom4 ) data s heet tsz02201 - 0a2a0d300110 - 1 - 2 10.apr.2015 rev.006 www.rohm.com ? 2012 rohm co., ltd. all rights reserved. tsz22111 >? 1 5 >? 001 package name vbga064t050a ` ? 1234 1234 1234 1234 1234 1234 ?B ? ? ??`? ( ?? ) `??????`? ??u???????
45 / 46 bu979 81xxx series max 196 segment s (seg49xcom4 ) data s heet tsz02201 - 0a2a0d300110 - 1 - 2 10.apr.2015 rev.006 www.rohm.com ? 2012 rohm co., ltd. all rights reserved. tsz22111 >? 1 5 >? 001 marking diagrams part number package part number marking bu97981kv v qfp64 bu97981kv bu979 81muv vqfn56av8080 bu97981 bu97 981gu vbga64t050a bu97981 vqfp64 (top view) bu97981kv part number marking lot number 1pin mark vqfn56 a v8080 (top view) bu97981 part number marking lot number 1pin mark v bga64t050a (top view) bu 97981 part number marking lot number 1pin mark
46 / 46 bu979 81xxx series max 196 segment s (seg49xcom4 ) data s heet tsz02201 - 0a2a0d300110 - 1 - 2 10.apr.2015 rev.006 www.rohm.com ? 2012 rohm co., ltd. all rights reserved. tsz22111 >? 1 5 >? 001 revision history date revision changes 31.aug.2012 001 new release 10.oct.2012 002 p.7 (bu97981muv) output voltage 1 min: 4.35 - > 4.25, max:4.65 - > 4.70 output voltage2 min:4.42 - > 4.38, max:4.58 - > 4.62 p.10 , p.11 example of recommended circuit seg - > segments 21. aug.2013 003 change to new style p.7 (bu97981muv) output voltage 1 min: 4. 2 5 - > 4.30 17 .dec .2014 004 add gu package p.1 delete package figure p.41 add
datasheet d a t a s h e e t notice-pga-e rev.001 ? 2015 rohm co., ltd. all rights reserved. notice precaution on using rohm products 1. our products are designed and manufac tured for application in ordinary elec tronic equipments (such as av equipment, oa equipment, telecommunication equipment, home electroni c appliances, amusement equipment, etc.). if you intend to use our products in devices requiring ex tremely high reliability (such as medical equipment (note 1) , transport equipment, traffic equipment, aircraft/spacecra ft, nuclear power controllers, fuel c ontrollers, car equipment including car accessories, safety devices, etc.) and whose malfunction or failure may cause loss of human life, bodily injury or serious damage to property (?specific applications?), please consult with the rohm sale s representative in advance. unless otherwise agreed in writing by rohm in advance, ro hm shall not be in any way responsible or liable for any damages, expenses or losses incurred by you or third parties arising from the use of any ro hm?s products for specific applications. (note1) medical equipment classification of the specific applications japan usa eu china class class class b class class class 2. rohm designs and manufactures its products subject to strict quality control system. however, semiconductor products can fail or malfunction at a certain rate. please be sure to implement, at your own responsibilities, adequate safety measures including but not limited to fail-safe desi gn against the physical injury, damage to any property, which a failure or malfunction of our products may cause. the following are examples of safety measures: [a] installation of protection circuits or other protective devices to improve system safety [b] installation of redundant circuits to reduce the impact of single or multiple circuit failure 3. our products are designed and manufactured for use under standard conditions and not under any special or extraordinary environments or conditio ns, as exemplified below. accordin gly, rohm shall not be in any way responsible or liable for any damages, expenses or losses arising from the use of an y rohm?s products under any special or extraordinary environments or conditions. if you intend to use our products under any special or extraordinary environments or conditions (as exemplified bel ow), your independent verification and confirmation of product performance, reliability, etc, prior to use, must be necessary: [a] use of our products in any types of liquid, incl uding water, oils, chemicals, and organic solvents [b] use of our products outdoors or in places where the products are exposed to direct sunlight or dust [c] use of our products in places where the products ar e exposed to sea wind or corrosive gases, including cl 2 , h 2 s, nh 3 , so 2 , and no 2 [d] use of our products in places where the products are exposed to static electricity or electromagnetic waves [e] use of our products in proximity to heat-producing components, plastic cords, or other flammable items [f] sealing or coating our products with resin or other coating materials [g] use of our products without cleaning residue of flux (ev en if you use no-clean type fluxes, cleaning residue of flux is recommended); or washing our products by using water or water-soluble cleaning agents for cleaning residue after soldering [h] use of the products in places subject to dew condensation 4. the products are not subjec t to radiation-proof design. 5. please verify and confirm characteristics of the final or mounted products in using the products. 6. in particular, if a transient load (a large amount of load applied in a short per iod of time, such as pulse. is applied, confirmation of performance characteristics after on-boar d mounting is strongly recomm ended. avoid applying power exceeding normal rated power; exceeding the power rating under steady-state loading c ondition may negatively affect product performance and reliability. 7. de-rate power dissipation (pd) depending on ambient temper ature (ta). when used in seal ed area, confirm the actual ambient temperature. 8. confirm that operation temperat ure is within the specified range descr ibed in the product specification. 9. rohm shall not be in any way responsible or liable for fa ilure induced under deviant condi tion from what is defined in this document. precaution for mounting / circuit board design 1. when a highly active halogenous (chlori ne, bromine, etc.) flux is used, the resi due of flux may negatively affect product performance and reliability. 2. in principle, the reflow soldering method must be us ed on a surface-mount products, the flow soldering method must be used on a through hole mount products. if the flow sol dering method is preferred on a surface-mount products, please consult with the rohm representative in advance. for details, please refer to rohm mounting specification
datasheet d a t a s h e e t notice-pga-e rev.001 ? 2015 rohm co., ltd. all rights reserved. precautions regarding application examples and external circuits 1. if change is made to the constant of an external circuit, pl ease allow a sufficient margin c onsidering variations of the characteristics of the products and external components, including transient characteri stics, as well as static characteristics. 2. you agree that application notes, re ference designs, and associated data and in formation contained in this document are presented only as guidance for products use. theref ore, in case you use such information, you are solely responsible for it and you must exercise your own indepen dent verification and judgment in the use of such information contained in this document. rohm shall not be in any way responsible or liable for any damages, expenses or losses incurred by you or third parties arising from the use of such information. precaution for electrostatic this product is electrostatic sensitive product, which may be damaged due to electrostatic discharge. please take proper caution in your manufacturing process and storage so that voltage exceeding t he products maximum rating will not be applied to products. please take special care under dry condit ion (e.g. grounding of human body / equipment / solder iron, isolation from charged objects, se tting of ionizer, friction prevention and temperature / humidity control). precaution for storage / transportation 1. product performance and soldered connections may deteriora te if the products are stor ed in the places where: [a] the products are exposed to sea winds or corros ive gases, including cl2, h2s, nh3, so2, and no2 [b] the temperature or humidity exceeds those recommended by rohm [c] the products are exposed to di rect sunshine or condensation [d] the products are exposed to high electrostatic 2. even under rohm recommended storage c ondition, solderability of products out of recommended storage time period may be degraded. it is strongly recommended to confirm sol derability before using products of which storage time is exceeding the recommended storage time period. 3. store / transport cartons in the co rrect direction, which is indicated on a carton with a symbol. otherwise bent leads may occur due to excessive stress applied when dropping of a carton. 4. use products within the specified time after opening a hum idity barrier bag. baking is required before using products of which storage time is exceeding the recommended storage time period. precaution for product label qr code printed on rohm products label is for rohm?s internal use only. precaution for disposition when disposing products please dispose them proper ly using an authorized industry waste company. precaution for foreign exchange and foreign trade act since concerned goods might be fallen under listed items of export control prescribed by foreign exchange and foreign trade act, please consult with rohm in case of export. precaution regarding intellectual property rights 1. all information and data including but not limited to application example contain ed in this document is for reference only. rohm does not warrant that foregoi ng information or data will not infringe any intellectual property rights or any other rights of any third party regarding such information or data. 2. rohm shall not have any obligations where the claims, actions or demands arising from the co mbination of the products with other articles such as components, circui ts, systems or external equipment (including software). 3. no license, expressly or implied, is granted hereby under any intellectual property rights or other rights of rohm or any third parties with respect to the products or the informati on contained in this document. pr ovided, however, that rohm will not assert its intellectual property rights or other rights against you or your customers to the extent necessary to manufacture or sell products containing the produc ts, subject to the terms and conditions herein. other precaution 1. this document may not be reprinted or reproduced, in whol e or in part, without prior written consent of rohm. 2. the products may not be disassembled, converted, modified, reproduced or otherwise changed without prior written consent of rohm. 3. in no event shall you use in any wa y whatsoever the products and the related technical information contained in the products or this document for any military purposes, incl uding but not limited to, the development of mass-destruction weapons. 4. the proper names of companies or products described in this document are trademarks or registered trademarks of rohm, its affiliated companies or third parties.
datasheet datasheet notice ? we rev.001 ? 2015 rohm co., ltd. all rights reserved. general precaution 1. before you use our pro ducts, you are requested to care fully read this document and fully understand its contents. rohm shall n ot be in an y way responsible or liabl e for fa ilure, malfunction or acci dent arising from the use of a ny rohms products against warning, caution or note contained in this document. 2. all information contained in this docume nt is current as of the issuing date and subj ec t to change without any prior notice. before purchasing or using rohms products, please confirm the la test information with a rohm sale s representative. 3. the information contained in this doc ument is provi ded on an as is basis and rohm does not warrant that all information contained in this document is accurate an d/or error-free. rohm shall not be in an y way responsible or liable for an y damages, expenses or losses incurred b y you or third parties resulting from inaccur acy or errors of or concerning such information.
datasheet part number bu97981muv package vqfn56av8080 unit quantity 1000 minimum package quantity 1000 packing type taping constitution materials list inquiry rohs yes bu97981muv - web page distribution inventory

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