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 Ordering number : ENN 6902
CMOS IC
LC75838E, 75838W
1/8 to 1/10 Duty General-Purpose LCD Display Drivers
Overview
The LC75838E and LC75838W are 1/8 to 1/10 duty general-purpose LCD display drivers used for character and graphics display. These products operate under the control of a microcontroller and can directly drive an LCD with up to 380 segments. They can also control up to 3 general-purpose output ports.
Package Dimensions
unit: mm 3159-QIP64E
[LC75838E]
17.2 1.0 1.6 1.0 0.8 14.0 0.35 1.6 1.0 0.15
33 48 49 32
Features
* 1/8duty-1/4bias, 1/9duty-1/4bias, and 1/10duty-1/4bias drive schemes can be controlled from serial data. 1/8duty-1/4bias: up to 320 segments 1/9duty-1/4bias: up to 351 segments 1/10duty-1/4bias: up to 380 segments * Serial data input supports CCB format communication with the system controller. * Serial data control of the power-saving mode based backup function and all the segments forced off function. * Direct display of display data without the use of a decoder provides high generality. * Built-in display contrast adjustment circuit. * Up to 3 general-purpose output ports are included. * Independent LCD driver block power supply VLCD. * The INH pin is provided. This pin turns off the display and forces the general-purpose output ports to the low level. * RC oscillator circuit
17.2 14.0 0.8
17
1.0
1
16
3.0max 0.8
64
0.1 2.7
15.6
SANYO: QIP64E
unit: mm 3190-SQFP64
[LC75838W]
12.0 10.0 0.18
1.25
0.5
1.25
0.15
48 49
1.25
33 32
12.0
10.0 0.5
1
16
0.5
0.1 0.5
1.7max
64
1.25
17
SANYO: SQFP64 * CCB is a trademark of SANYO ELECTRIC CO., LTD. * CCB is SANYO's original bus format and all the bus addresses are controlled by SANYO.
Any and all SANYO products described or contained herein do not have specifications that can handle applications that require extremely high levels of reliability, such as life-support systems, aircraft's control systems, or other applications whose failure can be reasonably expected to result in serious physical and/or material damage. Consult with your SANYO representative nearest you before using any SANYO products described or contained herein in such applications. SANYO assumes no responsibility for equipment failures that result from using products at values that exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or other parameters) listed in products specifications of any and all SANYO products described or contained herein.
SANYO Electric Co.,Ltd. Semiconductor Company
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN
53101TN (OT) No. 6902-1/32
LC75838E, 75838W Pin Assignment
COM1 COM2 COM3 COM4 COM5 COM6 COM7 COM8 S40/COM9 S39/COM10 S38 S37 S36 S35 S34 S33 48 P1 P2 P3 VDD VLCD VLCD0 VLCD1 VLCD2 VLCD3 VLCD4 VSS OSC INH CE CL DI 49 33 32 S32 S31 S30 S29 S28 S27 S26 S25 S24 S23 S22 S21 S20 S19 S18 S17
LC75838E LC75838W
64 1 16
17
S1 S2 S3 S4 S5 S6 S7 S8 S9 S10 S11 S12 S13 S14 S15 S16
No. 6902-2/32
LC75838E, 75838W
Specifications
Absolute Maximum Ratings at Ta=25C, VSS=0V
Parameter Maximum supply voltage Symbol VDD max VLCD max VIN1 Input voltage VIN2 VIN3 Output voltage VOUT1 VOUT2 IOUT1 Output current IOUT2 IOUT3 Allowable power dissipation Operating temperature Storage temperature Pd max Topr Tstg VDD VLCD CE, CL, DI, INH OSC VLCD1, VLCD2, VLCD3, VLCD4 OSC, P1 to P3 VLCD0, S1 to S40, COM1 to COM10 S1 to S40 COM1 to COM10 P1 to P3 Ta = 85C Conditions Ratings -0.3 to +7.0 -0.3 to +12.0 -0.3 to +7.0 -0.3 to VDD +0.3 -0.3 to VLCD +0.3 -0.3 to VDD +0.3 -0.3 to VLCD +0.3 300 3 5 200 -40 to +85 -55 to +125 V A mA mW C C V Unit V
Allowable Operating Ranges at Ta = -40 to +85C, VSS=0V
Parameter Symbol VDD Supply voltage VDD VLCD, When the display contrast adjustment circuit is used VLCD, When the display contrast adjustment circuit is not used VLCD0 VLCD1 VLCD2 VLCD3 VLCD4 CE, CL, DI, INH CE, CL, DI, INH OSC OSC OSC CL, DI CL, DI CE, CL CE, CL CE, CL CL CL INH, CE :Figure 2 :Figure 2 :Figure 2 :Figure 2 :Figure 2 :Figure 2 :Figure 2 :Figures 3, 4, and 5 25 160 160 160 160 160 160 160 10 0 0.8 VDD 0 43 680 50 100 Conditions Ratings min 2.7 7.0 4.5 VLCD4 + 4.5 3/4 (VLCD0-VLCD4) 2/4 (VLCD0-VLCD4) 1/4 (VLCD0-VLCD4) typ max 6.0 11.0 V 11.0 VLCD VLCD0 VLCD0 VLCD0 1.5 6.0 0.2 VDD V V k pF kHz ns ns ns ns ns ns ns s V V Unit
VLCD
Output voltage
VLCD0 VLCD1
Input voltage
VLCD2 VLCD3 VLCD4
Input high level voltage Input low level voltage Recommended external resistance Recommended external capacitance Guaranteed oscillation range Data setup time Data hold time CE wait time CE setup time CE hold time High level clock pulse width Low level clock pulse width INH switching time
VIH VIL ROSC COSC fOSC tds tdh tcp tcs tch toH toL tc
No. 6902-3/32
LC75838E, 75838W Electrical Characteristics for the Allowable Operating Ranges
Parameter Hysteresis Input high level current Input low level current Symbol VH IIH IIL VOH1 Output high level voltage VOH2 VOH3 VOL1 Output low level voltage VOL2 VOL3 VMID1 CE, CL, DI, INH CE, CL, DI, INH: VI = 6.0 V CE, CL, DI, INH: VI = 0 V S1 to S40: IO = -20 A COM1 to COM10: IO = -100 A P1 to P3: IO = -1 mA S1 to S40: IO = 20 A COM1 to COM10: IO = 100 A P1 to P3: IO = 1 mA S1 to S40: IO = 20 A 2/4 (VLCD0 - VLCD4) -0.6 3/4 (VLCD0 - VLCD4) -0.6 1/4 (VLCD0 - VLCD4) -0.6 40 50 -5.0 VLCD0 - 0.6 VLCD0 - 0.6 VDD - 1.0 VLCD4 + 0.6 VLCD4 + 0.6 1.0 2/4 (VLCD0 - VLCD4) +0.6 3/4 (VLCD0 - VLCD4) +0.6 1/4 (VLCD0 - VLCD4) +0.6 60 5 200 400 5 kHz V V V Conditions Ratings min typ 0.1 VDD 5.0 max Unit V A A
Output middle level voltage *1
VMID2
COM1 to COM10: IO = 100 A
VMID3 Oscillator frequency fosc IDD1 IDD2 ILCD1
COM1 to COM10: IO = 100 A OSC: ROSC = 43 k, COSC = 680 pF VDD : Power saving mode VDD: VDD = 6.0 V, outputs open, fosc = 50 kHz VLCD : Power saving mode VLCD : VLCD = 11.0 V Outputs open fosc = 50 kHz When the display contrast adjustment circuit is used. VLCD : VLCD = 11.0 V Outputs open fosc = 50 kHz When the display contrast adjustment circuit is not used.
Current drain
ILCD2
500
1000
A
ILCD3
250
500
Note: *1 Excluding the bias voltage generation divider resistor built into VLCD0, VLCD1, VLCD2 , VLCD3, and VLCD4. (See Figure 1.)
No. 6902-4/32
LC75838E, 75838W
CONTRAST ADJUSTER
To the common and segment drivers
Excluding these resistors
Figure 1 * When CL is stopped at the low level
VIH
CE toH CL
VIH 50% VIL
VIL
toL
VIH 50% VIL
tcp
VIH VIH VIL
tcs
tch
DI
VIL
tds
tdh
* When CL is stopped at the high level
VIH
CE toL CL
VIH 50% VIL
VIL
toH
VIH 50% VIL
tcp
VIH VIH VIL
tcs
tch
DI
VIL
tds
tdh
Figure 2
No. 6902-5/32
LC75838E, 75838W Block Diagram
S40/COM9 S39/COM10 S38
COM1
COM8
P1
P3
GENERAL PORT
COMMON DRIVER
SEGMENT DRIVER & LATCH
OSC VLCD
CLOCK GENERATOR
CONTROL REGISTER
CONTRAST ADJUSTER VLCD0 VLCD1 VLCD2 VLCD3 VLCD4 VDD VSS
SHIFT REGISTER
CCB INTERFACE
INH
CE
DI
CL
S1 No. 6902-6/32
LC75838E, 75838W Pin Functions
Pin S1 to S38 S39/COM10 S40/COM9 COM1 to COM8 P1 to P3 Pin No. 1 to 38 39 40 48 to 41 49 to 51 Function Segment driver outputs. The S39/COM10 and S40/COM9 pins can be used as common driver outputs under the control data DT1, DT2. Common driver outputs. General-purpose output ports. Oscillator connection. An oscillator circuit is formed by connecting an external resistor and capacitor at this pin. Serial data transfer inputs. These pins are connected to the microcontroller. CE :Chip enable CL :Synchronization clock DI :Transfer data Input that turns the display off and forces the general-purpose output ports low. * When INH is low (VSS) * Display off S1 to S38 = "L" (VLCD4). S39/COM10, S40/COM9 = "L" (VLCD4) COM1 to COM8 = "L" (VLCD4). * General-purpose output ports P1 to P3 = low (VSS) * When INH is high (VDD) * Display on * The states of the general-purpose output ports can be set by the PC1 to PC3 control data. However, serial data can be transferred when the INH pin is low. LCD drive 4/4 bias voltage (high level) supply pin. The level on this pin can be changed by the display contrast adjustment circuit. However, (VLCD0 - VLCD4) must be greater than or equal to 4.5 V. Also,external power must not be applied to this pin since the pin circuit includes the display contrast adjustment circuit. LCD drive 3/4 bias voltage (middle level) supply pin. This pin can be used to supply the 3/4 (VLCD0 - VLCD4) voltage level externally. LCD drive 2/4 bias voltage (middle level) supply pin. This pin can be used to supply the 2/4 (VLCD0 - VLCD4) voltage level externally. LCD drive 1/4 bias voltage (middle level) supply pin. This pin can be used to supply the 1/4 (VLCD0 - VLCD4) voltage level externally. Active I/O Handling when unused Open Open Open
-- -- --
q q q
OSC
60
--
I/O
VDD
CE CL DI
62 63 64
H v --
I I I GND
INH
61
L
I
GND
VLCD0
54
--
O
Open
VLCD1
55
--
I
Open
VLCD2
56
--
I
Open
VLCD3
57
--
I
Open
VLCD4
58
LCD drive 0/4 bias voltage (low level) supply pin. Fine adjustment of the display contrast can be implemented by connecting an external variable resistor to this pin. However, (VLCD0 - VLCD4) must be greater than or equal to 4.5 V, and VLCD4 must be in the range 0 V to 1.5 V, inclusive.
--
I
GND
VDD
52
Logic block power supply connection. Provide a voltage of between 2.7 and 6.0V. LCD driver block power supply connection. Provide a voltage of between 7.0 and 11.0 V when the display contrast adjustment circuit is used and provide a voltage of between 4.5 and 11.0 V when the circuit is not used. Power supply connection. Connect to ground.
--
--
--
VLCD VSS
53
--
--
--
59
--
--
--
No. 6902-7/39
LC75838E, 75838W Serial Data Transfer Format 1. 1/8 duty x When CL is stopped at the low level * When the display data is transferred.
CE CL DI
1 0 1 1 0 0 1 0 D1 D2 D57 D58 D59 D60 D61 D62 D63 D64 D65 D66 D67 D68 D69 D70 D71 D72 D73 D74 D75 D76 D77 D78 D79 D80 0 0 0 0 0 0 0 0 B0 B1 B2 B3 A0 A1 A2 A3
CCB address 8 bits
Display data 80 bits
Fixed data 5 bits
DD 3 bits
1
0
1
1
0
0
1
0
D81 D82
D137 D138 D139 D140 D141 D142 D143 D144 D145 D146 D147 D148 D149 D150 D151 D152 D153 D154 D155 D156 D157 D158 D159 D160 0
0
0
0
0
0
0
1
B0 B1 B2 B3 A0 A1 A2 A3
CCB address 8 bits
Display data 80 bits
Fixed data 5 bits
DD 3 bits
1
0
1
1
0
0
1
0
D161 D162
D217 D218 D219 D220 D221 D222 D223 D224 D225 D226 D227 D228 D229 D230 D231 D232 D233 D234 D235 D236 D237 D238 D239 D240 0
0
0
0
0
0
1
0
B0 B1 B2 B3 A0 A1 A2 A3
CCB address 8 bits
Display data 80 bits
Fixed data 5 bits
DD 3 bits
1
0
1
1
0
0
1
0
D241 D242
D297 D298 D299 D300 D301 D302 D303 D304 D305 D306 D307 D308 D309 D310 D311 D312 D313 D314 D315 D316 D317 D318 D319 D320 0
0
0
0
0
0
1
1
B0 B1 B2 B3 A0 A1 A2 A3
CCB address 8 bits
Display data 80 bits
Fixed data 5 bits
DD 3 bits
* When the control data is transferred.
CE CL DI
1 0 1 1 0 0 1 0 PC1 PC2 PC3 CT0 CT1 CT2 CT3 CTC SC BU DT1 DT2 0 1 0 0 B0 B1 B2 B3 A0 A1 A2 A3
CCB address 8 bits
Control data 13 bits
DD 3 bits
Note: B0 to B3, A0 to A3 ...... CCB address DD ................................ Direction data
No. 6902-8/32
LC75838E, 75838W y When CL is stopped at the high level * When the display data is transferred.
CE CL DI
1 0 1 1 0 0 1 0 A3 D1 D2 D57 D58 D59 D60 D61 D62 D63 D64 D65 D66 D67 D68 D69 D70 D71 D72 D73 D74 D75 D76 D77 D78 D79 D80 0 0 0 0 0 0 0 0 B0 B1 B2 B3 A0 A1 A2
CCB address 8 bits
Display data 80 bits
Fixed data 5 bits
DD 3 bits
1
0
1
1
0
0
1
0 A3
D81 D82
D137 D138 D139 D140 D141 D142 D143 D144 D145 D146 D147 D148 D149 D150 D151 D152 D153 D154 D155 D156 D157 D158 D159 D160 0
0
0
0
0
0
0
1
B0 B1 B2 B3 A0 A1 A2
CCB address 8 bits
Display data 80 bits
Fixed data 5 bits
DD 3 bits
1
0
1
1
0
0
1
0 A3
D161 D162
D217 D218 D219 D220 D221 D222 D223 D224 D225 D226 D227 D228 D229 D230 D231 D232 D233 D234 D235 D236 D237 D238 D239 D240 0
0
0
0
0
0
1
0
B0 B1 B2 B3 A0 A1 A2
CCB address 8 bits
Display data 80 bits
Fixed data 5 bits
DD 3 bits
1
0
1
1
0
0
1
0 A3
D241 D242
D297 D298 D299 D300 D301 D302 D303 D304 D305 D306 D307 D308 D309 D310 D311 D312 D313 D314 D315 D316 D317 D318 D319 D320 0
0
0
0
0
0
1
1
B0 B1 B2 B3 A0 A1 A2
CCB address 8 bits
Display data 80 bits
Fixed data 5 bits
DD 3 bits
* When the control data is transferred.
CE CL DI
1 0 1 1 0 0 1 0 A3 PC1 PC2 PC3 CT0 CT1 CT2 CT3 CTC SC BU DT1 DT2 0 1 0 0 B0 B1 B2 B3 A0 A1 A2
CCB address 8 bits
Control data 13 bits
DD 3 bits
Note: B0 to B3, A0 to A3 ...... CCB address DD ................................ Direction data * CCB address: ....4DH * D1 to D320: ........ Display data * PC1 to PC3: ........ General-purpose output port state setting data * CT0 to CT3, CTC: Display contrast setting data * SC: ...................... Segment on/off control data * BU: ...................... Normal mode/power saving mode control data * DT1, DT2: ............ Display technique setting data
No. 6902-9/32
LC75838E, 75838W 2. 1/9 duty x When CL is stopped at the low level * When the display data is transferred.
CE CL DI
1 0 1 1 0 0 1 0 D1 D2 D65 D66 D67 D68 D69 D70 D71 D72 D73 D74 D75 D76 D77 D78 D79 D80 D81 D82 D83 D84 D85 D86 D87 D88 D89 D90 0 0 0 0 0 0 B0 B1 B2 B3 A0 A1 A2 A3
CCB address 8 bits
Display data 90 bits
Fixed data 3 bits
DD 3 bits
1
0
1
1
0
0
1
0
D91 D92
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 0
0
0
0
0
1
B0 B1 B2 B3 A0 A1 A2 A3
CCB address 8 bits
Display data 90 bits
Fixed data 3 bits
DD 3 bits
1
0
1
1
0
0
1
0
D181 D182
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 0
0
0
0
1
0
B0 B1 B2 B3 A0 A1 A2 A3
CCB address 8 bits
Display data 90 bits
Fixed data 3 bits
DD 3 bits
1
0
1
1
0
0
1
0
D271 D272
D335 D336 D337 D338 D339 D340 D341 D342 D343 D344 D345 D346 D347 D348 D349 D350 D351 0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
B0 B1 B2 B3 A0 A1 A2 A3
CCB address 8 bits
Display data 81 bits
Fixed data 12 bits
DD 3 bits
* When the control data is transferred.
CE CL DI
1 0 1 1 0 0 1 0 PC1 PC2 PC3 CT0 CT1 CT2 CT3 CTC SC BU DT1 DT2 0 1 0 0 B0 B1 B2 B3 A0 A1 A2 A3
CCB address 8 bits
Control data 13 bits
DD 3 bits
Note: B0 to B3, A0 to A3 ...... CCB address DD ................................ Direction data
No. 6902-10/32
LC75838E, 75838W y When CL is stopped at the high level * When the display data is transferred.
CE CL DI
1 0 1 1 0 0 1 0 A3 D1 D2 D65 D66 D67 D68 D69 D70 D71 D72 D73 D74 D75 D76 D77 D78 D79 D80 D81 D82 D83 D84 D85 D86 D87 D88 D89 D90 0 0 0 0 0 0 B0 B1 B2 B3 A0 A1 A2
CCB address 8 bits
Display data 90 bits
Fixed data 3 bits
DD 3 bits
1
0
1
1
0
0
1
0 A3
D91 D92
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 0
0
0
0
0
1
B0 B1 B2 B3 A0 A1 A2
CCB address 8 bits
Display data 90 bits
Fixed data 3 bits
DD 3 bits
1
0
1
1
0
0
1
0 A3
D181 D182
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 0
0
0
0
1
0
B0 B1 B2 B3 A0 A1 A2
CCB address 8 bits
Display data 90 bits
Fixed data 3 bits
DD 3 bits
1
0
1
1
0
0
1
0 A3
D271 D272
D335 D336 D337 D338 D339 D340 D341 D342 D343 D344 D345 D346 D347 D348 D349 D350 D351 0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
B0 B1 B2 B3 A0 A1 A2
CCB address 8 bits
Display data 81 bits
Fixed data 12 bits
DD 3 bits
* When the control data is transferred.
CE CL DI
1 0 1 1 0 0 1 0 A3 PC1 PC2 PC3 CT0 CT1 CT2 CT3 CTC SC BU DT1 DT2 0 1 0 0 B0 B1 B2 B3 A0 A1 A2
CCB address 8 bits
Control data 13 bits
DD 3 bits
Note: B0 to B3, A0 to A3 ...... CCB address DD ................................ Direction data * CCB address: ...... 4DH * D1 to D351: ........ Display data * PC1 to PC3: ........ General-purpose output port state setting data * CT0 to CT3, CTC: Display contrast setting data * SC: ...................... Segment on/off control data * BU: ...................... Normal mode/power saving mode control data * DT1, DT2: ............ Display technique setting data
No. 6902-11/32
LC75838E, 75838W 3. 1/10 duty x When CL is stopped at the low level * When the display data is transferred.
CE CL DI
1 0 1 1 0 0 1 0 D1 D2 D73 D74 D75 D76 D77 D78 D79 D80 D81 D82 D83 D84 D85 D86 D87 D88 D89 D90 D91 D92 D93 D94 D95 D96 D97 D98 D99 D100 0 0 0 0 B0 B1 B2 B3 A0 A1 A2 A3
CCB address 8 bits
Display data 100 bits
DD Fixed data 3 bits 1 bit
1
0
1
1
0
0
1
0
D101 D102
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 0
0
0
1
B0 B1 B2 B3 A0 A1 A2 A3
CCB address 8 bits
Display data 100 bits
DD Fixed data 3 bits 1 bit
1
0
1
1
0
0
1
0
D201 D202
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 0
0
1
0
B0 B1 B2 B3 A0 A1 A2 A3
CCB address 8 bits
Display data 100 bits
DD Fixed data 3 bits 1 bit
1
0
1
1
0
0
1
0
D301 D302
D373 D374 D375 D376 D377 D378 D379 D380 0
O
O
O
O
O
O
O
O
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
B0 B1 B2 B3 A0 A1 A2 A3
CCB address 8 bits
Display data 80 bits
Fixed data 21 bits
DD 3 bits
* When the control data is transferred.
CE CL DI
1 0 1 1 0 0 1 0 PC1 PC2 PC3 CT0 CT1 CT2 CT3 CTC SC BU DT1 DT2 0 1 0 0 B0 B1 B2 B3 A0 A1 A2 A3
CCB address 8 bits
Control data 13 bits
DD 3 bits
Note: B0 to B3, A0 to A3 ...... CCB address DD ................................ Direction data
No. 6902-12/32
LC75838E, 75838W y When CL is stopped at the high level * When the display data is transferred.
CE CL DI
1 0 1 1 0 0 1 0 A3 D1 D2 D73 D74 D75 D76 D77 D78 D79 D80 D81 D82 D83 D84 D85 D86 D87 D88 D89 D90 D91 D92 D93 D94 D95 D96 D97 D98 D99 D100 0 0 0 0 B0 B1 B2 B3 A0 A1 A2
CCB address 8 bits
Display data 100 bits
DD Fixed data 3 bits 1 bit
1
0
1
1
0
0
1
0 A3
D101 D102
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 0
0
0
1
B0 B1 B2 B3 A0 A1 A2
CCB address 8 bits
Display data 100 bits
DD Fixed data 3 bits 1 bit
1
0
1
1
0
0
1
0 A3
D201 D202
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 0
0
1
0
B0 B1 B2 B3 A0 A1 A2
CCB address 8 bits
Display data 100 bits
DD Fixed data 3 bits 1 bit
1
0
1
1
0
0
1
0 A3
D301 D302
D373 D374 D375 D376 D377 D378 D379 D380 0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
B0 B1 B2 B3 A0 A1 A2
CCB address 8 bits
Display data 80 bits
Fixed data 21 bits
DD 3 bits
* When the control data is transferred.
CE CL DI
1 0 1 1 0 0 1 0 A3 PC1 PC2 PC3 CT0 CT1 CT2 CT3 CTC SC BU DT1 DT2 0 1 0 0 B0 B1 B2 B3 A0 A1 A2
CCB address 8 bits
Control data 13 bits
DD 3 bits
Note: B0 to B3, A0 to A3 ...... CCB address DD ................................ Direction data * CCB address: ...... 4DH * D1 to D380: ........ Display data * PC1 to PC3: ........ General-purpose output port state setting data * CT0 to CT3, CTC: Display contrast setting data * SC: ...................... Segment on/off control data * BU: ...................... Normal mode/power saving mode control data * DT1, DT2: ............ Display technique setting data
No. 6902-13/32
LC75838E, 75838W Control Data Functions 1. PC1 to PC3: General-purpose output port state setting data These control data bits set the states of the general-purpose output ports P1 to P3.
Output pin General-purpose output port state setting data P1 PC1 P2 PC2 P3 PC3
For example, if PC1 and PC2 are set to 1, and PC3 is set to 0, then the output pins P1 and P2 will output high levels (VDD) and the output pin P3 will output low level (VSS). 2. CT0 to CT3, CTC: Display contrast setting data These control data bits set the display contrast. CT0 to CT3: Display contrast setting (11 steps)
CT0 0 1 0 1 0 1 0 1 0 1 0 CT1 0 0 1 1 0 0 1 1 0 0 1 CT2 0 0 0 0 1 1 1 1 0 0 0 CT3 0 0 0 0 0 0 0 0 1 1 1 LCD drive 4/4 bias voltage supply VLCD0 level 0.94 VLCD = VLCD - (0.03 VLCD x 2) 0.91 VLCD = VLCD - (0.03 VLCD x 3) 0.88 VLCD = VLCD - (0.03 VLCD x 4) 0.85 VLCD = VLCD - (0.03 VLCD x 5) 0.82 VLCD = VLCD - (0.03 VLCD x 6) 0.79 VLCD = VLCD - (0.03 VLCD x 7) 0.76 VLCD = VLCD - (0.03 VLCD x 8) 0.73 VLCD = VLCD - (0.03 VLCD x 9) 0.70 VLCD = VLCD - (0.03 VLCD x 10) 0.67 VLCD = VLCD - (0.03 VLCD x 11) 0.64 VLCD = VLCD - (0.03 VLCD x 12)
CTC: Display contrast adjustment circuit state setting
CTC 0 1 Display contrast adjustment circuit state The display contrast adjustment circuit is disabled, and the VLCD0 pin level is forced to the VLCD level. The display contrast adjustment circuit operates and the display contrast is adjusted.
Note that although the display contrast can be adjusted by operating the built-in display contrast adjustment circuit, it is also possible to apply fine adjustments to the contrast by connecting an external variable resistor to the VLCD4 pin and modifying the VLCD4 pin voltage. However, the following conditions must be met: (VLCD0 - VLCD4) 4.5 V, and 1.5 V VLCD4 0 V.
No. 6902-14/32
LC75838E, 75838W 3. SC: Segment on/off control data This control data bit controls the on/off state of the segments.
SC 0 1 Display state On Off
However, note that when the segments are turned off by setting SC to 1, the segments are turned off by outputting segment off waveforms from the segment output pins.
4. BU: Normal mode/power saving mode control data This control data bit controls the normal mode and power saving mode.
BU 0 1 Normal mode Power saving mode The common and segment pins go to the VLCD4 level and the oscillator on the OSC pin is stopped. Note that the states of the general-purpose output ports P1 to P3 are set by PC1 to PC3 in the control data during power saving mode as well as normal mode. Mode
5. DT1, DT2: Display technique setting data This control data bits set the display technique.
DT1 0 1 0 DT2 0 0 1 Display technique S40/COM9 1/8 duty 1/4 bias drive 1/9 duty 1/4 bias drive 1/10 duty 1/4 bias drive S40 COM9 COM9 Output pins S39/COM10 S39 S39 COM10
Notes: Sn (n = 39, 40): Segment outputs COMn (n = 9 or 10): Common outputs
No. 6902-15/32
LC75838E, 75838W Display Data and Output Pin Correspondence * 1/8 duty
Output Pin S1 S2 S3 S4 S5 S6 S7 S8 S9 S10 S11 S12 S13 S14 S15 S16 S17 S18 S19 S20 S21 S22 S23 S24 S25 S26 S27 S28 S29 S30 S31 S32 S33 S34 S35 S36 S37 S38 S39/COM10 S40/COM9 COM1 D1 D9 D17 D25 D33 D41 D49 D57 D65 D73 D81 D89 D97 D105 D113 D121 D129 D137 D145 D153 D161 D169 D177 D185 D193 D201 D209 D217 D225 D233 D241 D249 D257 D265 D273 D281 D289 D297 D305 D313 COM2 D2 D10 D18 D26 D34 D42 D50 D58 D66 D74 D82 D90 D98 D106 D114 D122 D130 D138 D146 D154 D162 D170 D178 D186 D194 D202 D210 D218 D226 D234 D242 D250 D258 D266 D274 D282 D290 D298 D306 D314 COM3 D3 D11 D19 D27 D35 D43 D51 D59 D67 D75 D83 D91 D99 D107 D115 D123 D131 D139 D147 D155 D163 D171 D179 D187 D195 D203 D211 D219 D227 D235 D243 D251 D259 D267 D275 D283 D291 D299 D307 D315 COM4 D4 D12 D20 D28 D36 D44 D52 D60 D68 D76 D84 D92 D100 D108 D116 D124 D132 D140 D148 D156 D164 D172 D180 D188 D196 D204 D212 D220 D228 D236 D244 D252 D260 D268 D276 D284 D292 D300 D308 D316 COM5 D5 D13 D21 D29 D37 D45 D53 D61 D69 D77 D85 D93 D101 D109 D117 D125 D133 D141 D149 D157 D165 D173 D181 D189 D197 D205 D213 D221 D229 D237 D245 D253 D261 D269 D277 D285 D293 D301 D309 D317 COM6 D6 D14 D22 D30 D38 D46 D54 D62 D70 D78 D86 D94 D102 D110 D118 D126 D134 D142 D150 D158 D166 D174 D182 D190 D198 D206 D214 D222 D230 D238 D246 D254 D262 D270 D278 D286 D294 D302 D310 D318 COM7 D7 D15 D23 D31 D39 D47 D55 D63 D71 D79 D87 D95 D103 D111 D119 D127 D135 D143 D151 D159 D167 D175 D183 D191 D199 D207 D215 D223 D231 D239 D247 D255 D263 D271 D279 D287 D295 D303 D311 D319 COM8 D8 D16 D24 D32 D40 D48 D56 D64 D72 D80 D88 D96 D104 D112 D120 D128 D136 D144 D152 D160 D168 D176 D184 D192 D200 D208 D216 D224 D232 D240 D248 D256 D264 D272 D280 D288 D296 D304 D312 D320
Note: Applies when the S39/COM10 and S40/COM9 output pins are set to their segment output function.
No. 6902-16/32
LC75838E, 75838W For example, the table below lists the segment output states for the S11 output pin.
Display data D81 0 1 0 0 0 0 0 0 0 1 D82 0 0 1 0 0 0 0 0 0 1 D83 0 0 0 1 0 0 0 0 0 1 D84 0 0 0 0 1 0 0 0 0 1 D85 0 0 0 0 0 1 0 0 0 1 D86 0 0 0 0 0 0 1 0 0 1 D87 0 0 0 0 0 0 0 1 0 1 D88 0 0 0 0 0 0 0 0 1 1 The LCD segments for COM1 to COM8 are off The LCD segment for COM1 is on The LCD segment for COM2 is on The LCD segment for COM3 is on The LCD segment for COM4 is on The LCD segment for COM5 is on The LCD segment for COM6 is on The LCD segment for COM7 is on The LCD segment for COM8 is on The LCD segments for COM1 to COM8 are on Output pin state (S11)
No. 6902-17/32
LC75838E, 75838W * 1/9 duty
Output Pin S1 S2 S3 S4 S5 S6 S7 S8 S9 S10 S11 S12 S13 S14 S15 S16 S17 S18 S19 S20 S21 S22 S23 S24 S25 S26 S27 S28 S29 S30 S31 S32 S33 S34 S35 S36 S37 S38 S39/COM10 COM1 D1 D10 D19 D28 D37 D46 D55 D64 D73 D82 D91 D100 D109 D118 D127 D136 D145 D154 D163 D172 D181 D190 D199 D208 D217 D226 D235 D244 D253 D262 D271 D280 D289 D298 D307 D316 D325 D334 D343 COM2 D2 D11 D20 D29 D38 D47 D56 D65 D74 D83 D92 D101 D110 D119 D128 D137 D146 D155 D164 D173 D182 D191 D200 D209 D218 D227 D236 D245 D254 D263 D272 D281 D290 D299 D308 D317 D326 D335 D344 COM3 D3 D12 D21 D30 D39 D48 D57 D66 D75 D84 D93 D102 D111 D120 D129 D138 D147 D156 D165 D174 D183 D192 D201 D210 D219 D228 D237 D246 D255 D264 D273 D282 D291 D300 D309 D318 D327 D336 D345 COM4 D4 D13 D22 D31 D40 D49 D58 D67 D76 D85 D94 D103 D112 D121 D130 D139 D148 D157 D166 D175 D184 D193 D202 D211 D220 D229 D238 D247 D256 D265 D274 D283 D292 D301 D310 D319 D328 D337 D346 COM5 D5 D14 D23 D32 D41 D50 D59 D68 D77 D86 D95 D104 D113 D122 D131 D140 D149 D158 D167 D176 D185 D194 D203 D212 D221 D230 D239 D248 D257 D266 D275 D284 D293 D302 D311 D320 D329 D338 D347 COM6 D6 D15 D24 D33 D42 D51 D60 D69 D78 D87 D96 D105 D114 D123 D132 D141 D150 D159 D168 D177 D186 D195 D204 D213 D222 D231 D240 D249 D258 D267 D276 D285 D294 D303 D312 D321 D330 D339 D348 COM7 D7 D16 D25 D34 D43 D52 D61 D70 D79 D88 D97 D106 D115 D124 D133 D142 D151 D160 D169 D178 D187 D196 D205 D214 D223 D232 D241 D250 D259 D268 D277 D286 D295 D304 D313 D322 D331 D340 D349 COM8 D8 D17 D26 D35 D44 D53 D62 D71 D80 D89 D98 D107 D116 D125 D134 D143 D152 D161 D170 D179 D188 D197 D206 D215 D224 D233 D242 D251 D260 D269 D278 D287 D296 D305 D314 D323 D332 D341 D350 COM9 D9 D18 D27 D36 D45 D54 D63 D72 D81 D90 D99 D108 D117 D126 D135 D144 D153 D162 D171 D180 D189 D198 D207 D216 D225 D234 D243 D252 D261 D270 D279 D288 D297 D306 D315 D324 D333 D342 D351
Note: Applies when the S39/COM10 output pin is set to its segment output function.
No. 6902-18/32
LC75838E, 75838W For example, the table below lists the segment output states for the S11 output pin.
Display data D91 0 1 0 0 0 0 0 0 0 0 1 D92 0 0 1 0 0 0 0 0 0 0 1 D93 0 0 0 1 0 0 0 0 0 0 1 D94 0 0 0 0 1 0 0 0 0 0 1 D95 0 0 0 0 0 1 0 0 0 0 1 D96 0 0 0 0 0 0 1 0 0 0 1 D97 0 0 0 0 0 0 0 1 0 0 1 D98 0 0 0 0 0 0 0 0 1 0 1 D99 0 0 0 0 0 0 0 0 0 1 1 The LCD segments for COM1 to COM9 are off The LCD segment for COM1 is on The LCD segment for COM2 is on The LCD segment for COM3 is on The LCD segment for COM4 is on The LCD segment for COM5 is on The LCD segment for COM6 is on The LCD segment for COM7 is on The LCD segment for COM8 is on The LCD segment for COM9 is on The LCD segments for COM1 to COM9 are on Output pin state (S11)
No. 6902-19/32
LC75838E, 75838W * 1/10 duty
Output Pin S1 S2 S3 S4 S5 S6 S7 S8 S9 S10 S11 S12 S13 S14 S15 S16 S17 S18 S19 S20 S21 S22 S23 S24 S25 S26 S27 S28 S29 S30 S31 S32 S33 S34 S35 S36 S37 S38 COM1 D1 D11 D21 D31 D41 D51 D61 D71 D81 D91 D101 D111 D121 D131 D141 D151 D161 D171 D181 D191 D201 D211 D221 D231 D241 D251 D261 D271 D281 D291 D301 D311 D321 D331 D341 D351 D361 D371 COM2 D2 D12 D22 D32 D42 D52 D62 D72 D82 D92 D102 D112 D122 D132 D142 D152 D162 D172 D182 D192 D202 D212 D222 D232 D242 D252 D262 D272 D282 D292 D302 D312 D322 D332 D342 D352 D362 D372 COM3 D3 D13 D23 D33 D43 D53 D63 D73 D83 D93 D103 D113 D123 D133 D143 D153 D163 D173 D183 D193 D203 D213 D223 D233 D243 D253 D263 D273 D283 D293 D303 D313 D323 D333 D343 D353 D363 D373 COM4 D4 D14 D24 D34 D44 D54 D64 D74 D84 D94 D104 D114 D124 D134 D144 D154 D164 D174 D184 D194 D204 D214 D224 D234 D244 D254 D264 D274 D284 D294 D304 D314 D324 D334 D344 D354 D364 D374 COM5 D5 D15 D25 D35 D45 D55 D65 D75 D85 D95 D105 D115 D125 D135 D145 D155 D165 D175 D185 D195 D205 D215 D225 D235 D245 D255 D265 D275 D285 D295 D305 D315 D325 D335 D345 D355 D365 D375 COM6 D6 D16 D26 D36 D46 D56 D66 D76 D86 D96 D106 D116 D126 D136 D146 D156 D166 D176 D186 D196 D206 D216 D226 D236 D246 D256 D266 D276 D286 D296 D306 D316 D326 D336 D346 D356 D366 D376 COM7 D7 D17 D27 D37 D47 D57 D67 D77 D87 D97 D107 D117 D127 D137 D147 D157 D167 D177 D187 D197 D207 D217 D227 D237 D247 D257 D267 D277 D287 D297 D307 D317 D327 D337 D347 D357 D367 D377 COM8 D8 D18 D28 D38 D48 D58 D68 D78 D88 D98 D108 D118 D128 D138 D148 D158 D168 D178 D188 D198 D208 D218 D228 D238 D248 D258 D268 D278 D288 D298 D308 D318 D328 D338 D348 D358 D368 D378 COM9 D9 D19 D29 D39 D49 D59 D69 D79 D89 D99 D109 D119 D129 D139 D149 D159 D169 D179 D189 D199 D209 D219 D229 D239 D249 D259 D269 D279 D289 D299 D309 D319 D329 D339 D349 D359 D369 D379 COM10 D10 D20 D30 D40 D50 D60 D70 D80 D90 D100 D110 D120 D130 D140 D150 D160 D170 D180 D190 D200 D210 D220 D230 D240 D250 D260 D270 D280 D290 D300 D310 D320 D330 D340 D350 D360 D370 D380
No. 6902-20/32
LC75838E, 75838W For example, the table below lists the segment output states for the S11 output pin.
Display data D101 0 1 0 0 0 0 0 0 0 0 0 1 D102 0 0 1 0 0 0 0 0 0 0 0 1 D103 0 0 0 1 0 0 0 0 0 0 0 1 D104 0 0 0 0 1 0 0 0 0 0 0 1 D105 0 0 0 0 0 1 0 0 0 0 0 1 D106 0 0 0 0 0 0 1 0 0 0 0 1 D107 0 0 0 0 0 0 0 1 0 0 0 1 D108 0 0 0 0 0 0 0 0 1 0 0 1 D109 0 0 0 0 0 0 0 0 0 1 0 1 D110 0 0 0 0 0 0 0 0 0 0 1 1 The LCD segments for COM1 to COM10 are off The LCD segment for COM1 is on The LCD segment for COM2 is on The LCD segment for COM3 is on The LCD segment for COM4 is on The LCD segment for COM5 is on The LCD segment for COM6 is on The LCD segment for COM7 is on The LCD segment for COM8 is on The LCD segment for COM9 is on The LCD segment for COM10 is on The LCD segments for COM1 to COM10 are on Output pin state (S11)
No. 6902-21/32
LC75838E, 75838W 1/8 Duty, 1/4 Bias Drive Technique
COM1
COM2
. . . . . . . . . . . . . . . . .
COM8
LCD driver output when all LCD segments corresponding to COM1 to COM8 are turned off
LCD driver output when only LCD segments corresponding to COM1 are turned on
LCD driver output when only LCD segments corresponding to COM2 are turned on
LCD driver output when all LCD segments corresponding to COM1 to COM8 are turned on
No. 6902-22/32
LC75838E, 75838W 1/9 Duty, 1/4 Bias Drive Technique
COM1
COM2
. . . . . . . . . . . . . . . . .
COM9
LCD driver output when all LCD segments corresponding to COM1 to COM9 are turned off
LCD driver output when only LCD segments corresponding to COM1 are turned on
LCD driver output when only LCD segments corresponding to COM2 are turned on
LCD driver output when all LCD segments corresponding to COM1 to COM9 are turned on
No. 6902-23/32
LC75838E, 75838W 1/10 Duty, 1/4 Bias Drive Technique
COM1
COM2
. . . . . . . . . . . . . . . . .
COM10
LCD driver output when all LCD segments corresponding to COM1 to COM10 are turned off
LCD driver output when only LCD segments corresponding to COM1 are turned on
LCD driver output when only LCD segments corresponding to COM2 are turned on
LCD driver output when all LCD segments corresponding to COM1 to COM10 are turned on
No. 6902-24/32
LC75838E, 75838W The INH Pin and Display Control Since the IC internal data (the display data and the control data) is undefined when power is first applied, applications should set the INH pin low at the same time as power is applied to turn off the display (This sets the S1 to S38, S39/COM10, S40/COM9, and COM1 to COM8 to the VLCD4 level and the P1 to P3 to the VSS level.) and during this period send serial data from the controller. The controller should then set the INH pin high after the data transfer has completed. This procedure prevents meaningless displays at power on. (See figures 3, 4, and 5.) Power Supply Sequence The following sequences must be observed when power is turned on and off. (See figures 3, 4, and 5.) * Power on :Logic block power supply(VDD) on LCD driver block power supply(VLCD) on * Power off:LCD driver block power supply(VLCD) off Logic block power supply(VDD) off However, if the logic and LCD driver blocks use a shared power supply, then the power supplies can be turned on and off at the same time. * 1/8 duty
t1 VDD VLCD INH CE Display and control data transfer Internal data (D1 to D80) Internal data (D81 to D160) Internal data (D161 to D240) Internal data (D241 to D320) Internal data PC1 to PC3 CT0 to CT3, CTC SC, BU, DT1, DT2 Undefined Undefined Undefined Undefined Undefined Defined Defined Defined Defined Defined Undefined Undefined Undefined Undefined Undefined tc VIL t2 t3
VIL
* t1 0 * t2 > 0 * t3 0 (t2 > t3) * tc * * * 10 s min
Figure 3
No. 6902-25/32
LC75838E, 75838W * 1/9 duty
t1 VDD VLCD INH CE Display and control data transfer Internal data (D1 to D90) Internal data (D91 to D180) Internal data (D181 to D270) Internal data (D271 to D351) Internal data PC1 to PC3 CT0 to CT3, CTC SC, BU, DT1, DT2 Undefined Undefined Undefined Undefined Undefined Defined Defined Defined Defined Defined Undefined Undefined Undefined Undefined Undefined
* t1 0 * t2 > 0 * t3 0 (t2 > t3) * tc * * * 10 s min
t2 t3
VIL tc VIL
Figure 4 * 1/10 duty
t2
t1 VDD VLCD INH CE Display and control data transfer Internal data (D1 to D100) Internal data (D101 to D200) Internal data (D201 to D300) Internal data (D301 to D380) Internal data PC1 to PC3 CT0 to CT3, CTC SC, BU, DT1, DT2 Undefined Undefined Undefined Undefined Undefined Defined Defined Defined Defined Defined tc VIL
t3
VIL
Undefined Undefined Undefined Undefined Undefined
* t1 0 * t2 > 0 * t3 0 (t2 > t3) * tc * * * 10 s min
Figure 5
Notes on Transferring Display Data from the Controller The display data is transferred to the LC75838E/W in four operations. All of the display data should be transferred within 30 ms to maintain the quality of the displayed image.
No. 6902-26/32
LC75838E, 75838W Sample Application Circuit 1 1/8 duty, 1/4 bias drive technique (for use with normal panels)
LCD panel +5 V VDD VSS COM1 COM2 COM3 COM4 COM5 COM6 COM7 COM8 S1 S2 S3 S4 S5 S6 S7 S8 S9 S10 S36 S37 S38 COM10/S39 COM9/S40 P1 P2 P3 General-purpose output ports Used with the backlight controller or other circuit.
+8 V OPEN
VLCD VLCD0 VLCD1 VLCD2 VLCD3 VLCD4 *2
C
C
C
C 0.047 F OSC
From the controller
INH CE CL DI
Note: *2. If a variable resistor is not used for display contrast fine adjustment, the VLCD4 pin must be connected to ground.
No. 6902-27/32
LC75838E, 75838W Sample Application Circuit 2 1/8 duty, 1/4 bias drive technique (for use with large panels)
LCD panel +5 V VDD VSS +8 V R VLCD1 R VLCD2 R C C C R VLCD4 *2 C 0.047 F 10 k R 2.2 k OSC VLCD3 S1 S2 S3 S4 S5 S6 S7 S8 S9 S10 S36 S37 S38 COM10/S39 COM9/S40 P1 P2 P3 General-purpose output ports Used with the backlight controller or other circuit. VLCD VLCD0 COM1 COM2 COM3 COM4 COM5 COM6 COM7 COM8
From the controller
INH CE CL DI
Note: *2. If a variable resistor is not used for display contrast fine adjustment, the VLCD4 pin must be connected to ground.
No. 6902-28/32
LC75838E, 75838W Sample Application Circuit 3 1/9 duty, 1/4 bias drive technique (for use with normal panels)
LCD panel +5 V VDD VSS +8 V OPEN VLCD VLCD0 VLCD1 VLCD2 VLCD3 C C C VLCD4 *2 COM1 COM2 COM3 COM4 COM5 COM6 COM7 COM8 S40/COM9 S1 S2 S3 S4 S5 S6 S7 S8 S9 S10 S36 S37 S38 COM10/S39 From the controller INH CE CL DI P1 P2 P3 General-purpose output ports Used with the backlight controller or other circuit.
C 0.047 F OSC
Note: *2. If a variable resistor is not used for display contrast fine adjustment, the VLCD4 pin must be connected to ground.
No. 6902-29/32
LC75838E, 75838W Sample Application Circuit 4 1/9 duty, 1/4 bias drive technique (for use with large panels)
LCD panel +5 V VDD VSS +8 V R R R C C C R VLCD2 VLCD3 VLCD4 *2 S1 S2 S3 S4 S5 S6 S7 S8 S9 S10 S36 S37 S38 COM10/S39 From the controller INH CE CL DI P1 P2 P3 General-purpose output ports Used with the backlight controller or other circuit. VLCD VLCD0 VLCD1 COM1 COM2 COM3 COM4 COM5 COM6 COM7 COM8 S40/COM9
C 0.047 F 10 k R 2.2 k OSC
Note: *2. If a variable resistor is not used for display contrast fine adjustment, the VLCD4 pin must be connected to ground.
No. 6902-30/32
LC75838E, 75838W Sample Application Circuit 5 1/10 duty, 1/4 bias drive technique (for use with normal panels)
LCD panel +5 V VDD VSS +8 V OPEN VLCD VLCD0 VLCD1 VLCD2 VLCD3 C C C VLCD4 *2 C 0.047 F OSC COM1 COM2 COM3 COM4 COM5 COM6 COM7 COM8 S40/COM9 S39/COM10 S1 S2 S3 S4 S5 S6 S7 S8 S9 S10 S36 S37 S38 From the controller INH CE CL DI P1 P2 P3 General-purpose output ports Used with the backlight controller or other circuit.
Note: *2. If a variable resistor is not used for display contrast fine adjustment, the VLCD4 pin must be connected to ground.
No. 6902-31/32
LC75838E, 75838W Sample Application Circuit 6 1/10 duty, 1/4 bias drive technique (for use with large panels)
LCD panel +5 V VDD VSS +8 V R R VLCD2 R VLCD3 C C C R VLCD4 *2 C 0.047 F 10 k R 2.2 k OSC S1 S2 S3 S4 S5 S6 S7 S8 S9 S10 S36 S37 S38 From the controller INH CE CL DI P1 P2 P3 General-purpose output ports Used with the backlight controller or other circuit. VLCD VLCD0 VLCD1 COM1 COM2 COM3 COM4 COM5 COM6 COM7 COM8 S40/COM9 S39/COM10
Note: *2. If a variable resistor is not used for display contrast fine adjustment, the VLCD4 pin must be connected to ground.
Specifications of any and all SANYO products described or contained herein stipulate the performance, characteristics, and functions of the described products in the independent state, and are not guarantees of the performance, characteristics, and functions of the described products as mounted in the customer's products or equipment. To verify symptoms and states that cannot be evaluated in an independent device, the customer should always evaluate and test devices mounted in the customer's products or equipment. SANYO Electric Co., Ltd. strives to supply high-quality high-reliability products. However, any and all semiconductor products fail with some probability. It is possible that these probabilistic failures could give rise to accidents or events that could endanger human lives, that could give rise to smoke or fire, or that could cause damage to other property. When designing equipment, adopt safety measures so that these kinds of accidents or events cannot occur. Such measures include but are not limited to protective circuits and error prevention circuits for safe design, redundant design, and structural design. In the event that any or all SANYO products (including technical data, services) described or contained herein are controlled under any of applicable local export control laws and regulations, such products must not be exported without obtaining the export license from the authorities concerned in accordance with the above law. No part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopying and recording, or any information storage or retrieval system, or otherwise, without the prior written permission of SANYO Electric Co., Ltd. Any and all information described or contained herein are subject to change without notice due to product/technology improvement, etc. When designing equipment, refer to the "Delivery Specification" for the SANYO product that you intend to use. Information (including circuit diagrams and circuit parameters) herein is for example only; it is not guaranteed for volume production. SANYO believes information herein is accurate and reliable, but no guarantees are made or implied regarding its use or any infringements of intellectual property rights or other rights of third parties.
This catalog provides information as of May, 2001. Specifications and information herein are subject to change without notice. PS No. 6902-32/32


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