LC75725E 1/11 Duty Dynamic Drive Driver Overview LC7572
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Ordering number EN5606
LC75725E
1/11 Duty Dynamic Drive Driver
Overview
LC75725E 1/11 duty dynamic drive driver. provides segment outputs digit outputs. facilitates construction display systems operating under control controller.
Package Dimensions
unit:
3159-QFP64E
[LC75725E]
Features
Dynamic drive display technique display four eleven digits VFD. Serial data input supports CCB* format communication with system controller. dimmer level controlled serial data input. (The dimmer resolution bits.) High generality since display data displayed without intervention decoder. segments turned with pin. oscillator circuit.
SANYO: QIP64E
trademark SANYO ELECTRIC CO., LTD. SANYO's original format addresses controlled SANYO.
Specifications
Absolute Maximum Ratings 25°C,
Parameter Maximum supply voltage Symbol VIN1 VIN2 VOUT1 VOUT2 IOUT1 IOUT2 Topr Tstg OSCI S43, OSCO 85°C Conditions Ratings -0.3 +6.5 +0.3 -0.3 +6.5 -0.3 +0.3 +0.3 -0.3 +0.3 +150 Unit
Input voltage
Output voltage
Output current Allowable power dissipation Operating temperature Storage temperature
SANYO Electric Co.,Ltd. Semiconductor Bussiness Headquarters
TOKYO OFFICE Tokyo Bldg., 1-10, Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN
3398HA (OT) 5606-1/13
LC75725E Allowable Operating Ranges +85°C,
Parameter Symbol VIH1 VIH2 fOSC ROSC COSC OSCI BLK, OSCI OSCI, OSCO OSCI, OSCO OSCI, OSCO BLK, Figure Figure Figure Figure Figure Figure Figure Figure Conditions Ratings Unit
Supply voltage
Input high-level voltage Input low-level voltage Guaranteed oscillator range Recommended external resistance Recommended external capacitance level clock pulse width High level clock pulse width Data setup time Data hold time wait time setup time hold time switching time
Electrical Characteristics Allowable Operating Ranges
Parameter Symbol IIH1 IIH2 VOH1 Output high-level voltage VOH2 VOH3 Output low-level voltage Output voltage Pull-down resistors Oscillator frequency Hysteresis voltage Current drain VOFF fOSC Conditions BLK: OSCI:VI BLK: S43: G11: OSCO: OSCO: -0.5 S43, G11: Outputs S43, G11: OSCI, OSCO: ROSC COSC VDD: Outputs open. Display off, fOSC MHz, Ratings Unit
Input high-level current Input low-level current
5606-2/13
LC75725E When stopped level
When stopped high level
Figure Assignment
view
5606-3/13
LC75725E Block Diagram
Functions
OSCI OSCO Function Driver block power supply connection. (Both pins must connected.) Logic block power supply connection. Provide voltage between Power supply connection. Connect ground. Oscillator connection. oscillator circuit formed connecting external resistor capacitor these pins. Display control input. (VSS) Display off. level.) High (VDD) Display Note that serial data transferred while display turned off. Serial data transfer inputs. These pins must connected system microcontroller. Synchronization clock Transfer data Chip enable Digit outputs. These pins P-channel open drain outputs with pull-down resistors. Segment outputs displaying display data transferred serial data input. These pins P-channel open drain outputs with pull-down resistors. Handling when unused OPEN
OPEN OPEN
5606-4/13
LC75725E Serial Data Transfer Format When stopped level
don't care direction data
5606-5/13
LC75725E
don't care direction data
5606-6/13
LC75725E When stopped high level
don't care direction data
5606-7/13
LC75725E
don't care direction data
Figure
5606-8/13
LC75725E address: Transfer 01110110B shown Figure DM9: Dimmer data This dimmer data controls duty digit output pins segment output pins. consists bits, which LSB. This dimmer data sets intensity levels. following table gives relationship between dimmer data dimmer level.
Dimmer level (Ton/Tdig) 0/1024 1/1024 2/1024 990/1024 991/1024 992/1024 (max) 992/1024 (max) 992/1024 (max) 992/1024 (max) used
Tdig: Single-digit display time (See Figure Ton: Single-digit time (See Figure
distortion digit waveforms segment waveforms panel used wiring causes spurious glowing panel dimly, recommend setting dimmer level smaller value. GN3: Number display digits data This data give number digits displayed panel, number between following table gives relationship between this setting digit output pins used.
Digit output pins
example, panel displays digits using digit output pins D473: Display data (n=1 473) Display (n=1 473) Display Display data digit output Display data digit output D129 Display data digit output D130 D172 Display data digit output D173 D215 Display data digit output D216 D258 Display data digit output D259 D301 Display data digit output D302 D344 Display data digit output D345 D387 Display data digit output D388 D430 Display data digit output D431 D473 Display data digit output number display data bits transferred depends number digits displayed. example, panel displays digits, display data bits D258 transferred. There need transfer display data bits D259 D473.
5606-9/13
LC75725E Example Serial Data Transfer display digits (1/6 duty)
5606-10/13
LC75725E Correspondence between Display Data D473) Segment Output Pins
Segment output D100 D101 D102 D103 D104 D105 D106 D107 D108 D109 D110 D111 D112 D113 D114 D115 D116 D117 D118 D119 D120 D121 D122 D123 D124 D125 D126 D127 D128 D129 D130 D131 D132 D133 D134 D135 D136 D137 D138 D139 D140 D141 D142 D143 D144 D145 D146 D147 D148 D149 D150 D151 D152 D153 D154 D155 D156 D157 D158 D159 D160 D161 D162 D163 D164 D165 D166 D167 D168 D169 D170 D171 D172 D173 D174 D175 D176 D177 D178 D179 D180 D181 D182 D183 D184 D185 D186 D187 D188 D189 D190 D191 D192 D193 D194 D195 D196 D197 D198 D199 D200 D201 D202 D203 D204 D205 D206 D207 D208 D209 D210 D211 D212 D213 D214 D215 D216 D217 D218 D219 D220 D221 D222 D223 D224 D225 D226 D227 D228 D229 D230 D231 D232 D233 D234 D235 D236 D237 D238 D239 D240 D241 D242 D243 D244 D245 D246 D247 D248 D249 D250 D251 D252 D253 D254 D255 D256 D257 D258 D259 D260 D261 D262 D263 D264 D265 D266 D267 D268 D269 D270 D271 D272 D273 D274 D275 D276 D277 D278 D279 D280 D281 D282 D283 D284 D285 D286 D287 D288 D289 D290 D291 D292 D293 D294 D295 D296 D297 D298 D299 D300 D301 D302 D303 D304 D305 D306 D307 D308 D309 D310 D311 D312 D313 D314 D315 D316 D317 D318 D319 D320 D321 D322 D323 D324 D325 D326 D327 D328 D329 D330 D331 D332 D333 D334 D335 D336 D337 D338 D339 D340 D341 D342 D343 D344 D345 D346 D347 D348 D349 D350 D351 D352 D353 D354 D355 D356 D357 D358 D359 D360 D361 D362 D363 D364 D365 D366 D367 D368 D369 D370 D371 D372 D373 D374 D375 D376 D377 D378 D379 D380 D381 D382 D383 D384 D385 D386 D387 D388 D389 D390 D391 D392 D393 D394 D395 D396 D397 D398 D399 D400 D401 D402 D403 D404 D405 D406 D407 D408 D409 D410 D411 D412 D413 D414 D415 D416 D417 D418 D419 D420 D421 D422 D423 D424 D425 D426 D427 D428 D429 D430 D431 D432 D433 D434 D435 D436 D437 D438 D439 D440 D441 D442 D443 D444 D445 D446 D447 D448 D449 D450 D451 D452 D453 D454 D455 D456 D457 D458 D459 D460 D461 D462 D463 D464 D465 D466 D467 D468 D469 D470 D471 D472 D473
5606-11/13
LC75725E Display Control Since internal data D473 control data) undefined when power first applied, display pins level) setting same time power applied. Then, meaningless display power prevented transfering necessary serial data from controller while display high after transfer completes. (See Figure
Power Supply Sequence following sequences must observed when power turned off. (See Figure Power Logic block power supply (VDD) Driver block power supply (VFL) Power Driver block power supply (VFL) Logic block power supply (VDD)
Figure
5606-12/13
LC75725E Digit Timing Chart display digits) Tframe, frame period, Tdig where number display digits. Tdig, single-digit display time, 2048/fosc, where fOSC oscillator frequency. When number display digits oscillator frequency, fosc, MHz, Tdig will about Tframe will about 6.09
Figure Sample Application Circuit
products described contained herein intended surgical implants, life-support systems, aerospace equipment, nuclear power control systems, vehicles, disaster/crime-prevention equipment like, failure which directly indirectly cause injury, death property loss. Anyone purchasing products described contained herein above-mentioned shall: Accept full responsibility indemnify defend SANYO ELECTRIC CO., LTD., affiliates, subsidiaries distributors their officers employees, jointly severally, against claims litigation damages, cost expenses associated with such use: impose responsibility fault negligence which cited such claim litigation SANYO ELECTRIC CO., LTD., affiliates, subsidiaries distributors their officers employees jointly severally. Information (including circuit diagrams circuit parameters) herein example only; guaranteed volume production. SANYO believes information herein accurate reliable, guarantees made implied regarding infringements intellectual property rights other rights third parties. This catalog provides information March, 1998. Specifications information herein subject change without notice. 5606-13/13
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