lc75848t Sanyo Semiconductor Corporation, lc75848t Datasheet

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lc75848t

Manufacturer Part Number
lc75848t
Description
1/8 To 1/10 Duty General-purpose Lcd Display Drivers
Manufacturer
Sanyo Semiconductor Corporation
Datasheet
Ordering number : ENN7160
Overview
The LC75848T is 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
930 segments. They can also control up to 4 general-
purpose output ports.
Features
• 1/8duty–1/4bias, 1/9duty–1/4bias, and 1/10duty–1/4bias
• Serial data input supports CCB format communication
• Serial data control of the power-saving mode based
• The frame frequency of the common and segment output
• Direct display of display data without the use of a
• Built-in display contrast adjustment circuit.
• Up to 4 general-purpose output ports are included.
• Independent LCD driver block power supply V
• The INH pin is provided. This pin turns off the display
• RC oscillator circuit
drive schemes can be controlled from serial data.
with the system controller.
backup function and all the segments forced off
function.
waveforms can be controlled from the serial data.
decoder provides high generality.
and forces the general-purpose output ports to the low
level.
1/8duty–1/4bias: up to 760 segments
1/9duty–1/4bias: up to 846 segments
1/10duty–1/4bias: up to 930 segments
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN
• CCB is a trademark of SANYO ELECTRIC CO., LTD.
• CCB is SANYO’s original bus format and all the bus
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.
addresses are controlled by SANYO.
SANYO Electric Co.,Ltd. Semiconductor Company
1/8 to 1/10 Duty General-Purpose LCD Display Drivers
LCD
.
Package Dimensions
unit: mm
3257-TQFP120
(1.2)
0.5
91
120
90
(0.5)
1
[LC75848T]
16.0
14.0
0.4
0.15
42202AS (OT) No. 7160 -1/33
61
30
LC75848T
31
60
SANYO: TQFP120
(1.0)
0.125
0.1
CMOS IC

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lc75848t Summary of contents

Page 1

... Ordering number : ENN7160 1/8 to 1/10 Duty General-Purpose LCD Display Drivers Overview The LC75848T is 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 930 segments. They can also control general- purpose output ports ...

Page 2

... COM3 COM2 COM1 VDD VLCD VLCD0 VLCD1 VLCD2 VLCD3 VLCD4 VSS OSC INH 120 1 LC75848T LC75848T (TQFP120 S60 S59 S58 S57 S56 S55 S54 S53 S52 S51 S50 S49 S48 S47 S46 S45 S44 S43 S42 S41 ...

Page 3

... 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 LC75848T =0V SS Symbol Conditions V max max ...

Page 4

... Input high level current Input low level current Output high level voltage Output low level voltage 1 Output middle level voltage * Oscillator frequency Current drain Note: *1. Excluding the bias voltage generation divider resistor built into V LC75848T Symbol Conditions V CE, CL, DI, INH H I CE, CL, DI, INH 6.0 V ...

Page 5

... When CL is stopped at the low level CE tøH VIH 50% CL VIL VIH DI VIL tds tdh • When CL is stopped at the high level CE tø tds LC75848T VLCD CONTRAST ADJUSTER VLCD0 VLCD1 VLCD2 VLCD3 VLCD4 Figure 1 VIH tøL tcp tcs VIH tøH VIH 50% ...

Page 6

... Block Diagram GENERAL PORT CLOCK OSC GENERATOR VLCD CONTRAST ADJUSTER VLCD0 VLCD1 VLCD2 VLCD3 VLCD4 VDD VSS LC75848T COMMON SEGMENT DRIVER & LATCH DRIVER CONTROL REGISTER SHIFT REGISTER CCB INTERFACE No. 7160-6/33 ...

Page 7

... 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 V 109 LCD 4.5 and 11.0 V when the circuit is not used. V 115 Power supply connection. Connect to ground. SS LC75848T Function ) SS 4). LCD 4) LCD 4). LCD ...

Page 8

... DD································· Direction data LC75848T D97 D98 D99 D100 D101 D102 D103 D104 D105 D106 ...

Page 9

... Data that sets the frame frequency of the common and segment output waveforms • DT1, DT2: ··········· Display technique setting data LC75848T D107 D108 D109 D110 D111 D112 D113 Display ...

Page 10

... DD································· Direction data LC75848T D113 D114 D115 D116 D117 D118 D119 D120 D121 D122 ...

Page 11

... Data that sets the frame frequency of the common and segment output waveforms • DT1, DT2: ··········· Display technique setting data LC75848T D123 D124 D125 D126 D127 D128 D129 Display ...

Page 12

... DD································· Direction data LC75848T D129 D130 D131 D132 D133 D134 D135 D136 D137 D138 ...

Page 13

... Data that sets the frame frequency of the common and segment output waveforms • DT1, DT2: ··········· Display technique setting data LC75848T D139 D140 D141 D142 D143 D144 D145 Display ...

Page 14

... Note that although the display contrast can be adjusted by operating the built-in display contrast adjustment circuit also possible to apply fine adjustments to the contrast by connecting an external variable resistor to the V modifying the V 4 pin voltage. However, the following conditions must be met: (V LCD ≥ ≥ LCD LC75848T PC1 PC2 PC3 PC4 ) ...

Page 15

... Notes 95): Segment outputs COMn ( 10): Common outputs LC75848T Mode 4 level and the oscillator on the OSC pin is stopped. Note that the states of the LCD Frame frequency 1/9 duty 1/4 bias drive f9 [Hz] 1/10 duty 1/4 bias drive f10 [Hz] fosc — ...

Page 16

... D345 S45 D353 S46 D361 S47 D369 S48 D377 S49 D385 S50 D393 S51 D401 S52 D409 S53 D417 S54 D425 LC75848T COM2 COM3 COM4 D10 D11 D12 D18 D19 D20 D26 D27 D28 D34 D35 D36 D42 D43 D44 ...

Page 17

... LC75848T COM2 COM3 COM4 D434 D435 D436 D442 D443 D444 D450 D451 D452 D458 D459 D460 D466 D467 D468 D474 D475 D476 D482 D483 D484 D490 D491 D492 ...

Page 18

... S49 D433 D434 S50 D442 D443 S51 D451 D452 S52 D460 D461 S53 D469 D470 S54 D478 D479 S55 D487 D488 LC75848T COM3 COM4 COM5 COM6 D12 D13 D14 D15 D21 D22 D23 D24 D30 D31 D32 D33 D39 ...

Page 19

... LC75848T COM3 COM4 COM5 D498 D499 D500 D507 D508 D509 D516 D517 D518 D525 D526 D527 D534 D535 D536 D543 D544 D545 D552 D553 D554 D561 D562 D563 ...

Page 20

... S49 D481 D482 S50 D491 D492 S51 D501 D502 S52 D511 D512 S53 D521 D522 S54 D531 D532 S55 D541 D542 LC75848T COM3 COM4 COM5 COM6 D13 D14 D15 D16 D23 D24 D25 D26 D33 D34 D35 D36 D43 ...

Page 21

... LC75848T COM3 COM4 COM5 COM6 D553 D554 D555 D556 D563 D564 D565 D566 D573 D574 D575 D576 D583 D584 D585 D586 D593 D594 D595 D596 D603 D604 D605 ...

Page 22

... 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 When FC in the control data is 0. When FC in the control data is 1. LC75848T fosc f8= 512 fosc f8= 256 VLCD0 ...

Page 23

... 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 When FC in the control data is 0. When FC in the control data is 1. LC75848T fosc f9= 576 fosc f9= 288 VLCD0 ...

Page 24

... LCD segments corresponding to COM2 are turned on LCD driver output when all LCD segments corresponding to COM1 to COM10 are turned on T10 10 When FC in the control data is 0. When FC in the control data is 1. LC75848T T10 1 T10= f10 fosc f10= 640 fosc f10= 320 ...

Page 25

... Undefined Internal data (D721 to D760) Undefined PC1 to PC4 Internal CT0 to CT3, CTC Undefined data SC, BU, FC DT1, DT2 LC75848T 4 level and the the V LCD ) on LCD driver block power supply off Logic block power supply(V LCD t 1 Display and control data transfer Figure 3 level ...

Page 26

... Internal data (D541 to D675) Undefined Internal data (D676 to D810) Undefined Internal data (D811 to D846) Undefined PC1 to PC4 Internal CT0 to CT3, CTC Undefined data SC, BU, FC DT1, DT2 LC75848T t 1 Display and control data transfer Figure Defined Undefined Defined Undefined ...

Page 27

... Undefined data SC, BU, FC DT1, DT2 Notes on Transferring Display Data from the Controller The display data is transferred to the LC75848T in seven operations. All of the display data should be transferred within maintain the quality of the displayed image. LC75848T t 1 Display and control data transfer ...

Page 28

... VLCD0 VLCD1 VLCD2 VLCD3 VLCD4 *2 C 0.047 F OSC INH From the CE controller CL DI Note: * variable resistor is not used for display contrast fine adjustment, the V LC75848T LCD panel COM1 COM2 COM3 COM4 COM5 COM6 COM7 COM8 ...

Page 29

... VLCD3 VLCD4 *2 C 0.047 2.2 k OSC INH From the CE controller CL DI Note: * variable resistor is not used for display contrast fine adjustment, the V LC75848T LCD panel COM1 COM2 COM3 COM4 COM5 COM6 COM7 COM8 ...

Page 30

... OPEN 0.047 F From the controller Note: * variable resistor is not used for display contrast fine adjustment, the V LC75848T VDD COM1 COM2 VSS COM3 COM4 COM5 COM6 VLCD COM7 VLCD0 ...

Page 31

... VLCD4 *2 C 0.047 2.2 k OSC INH From the CE controller CL DI Note: * variable resistor is not used for display contrast fine adjustment, the V LC75848T LCD panel COM1 COM2 COM3 COM4 COM5 COM6 COM7 COM8 S95/COM9 ...

Page 32

... OPEN 0.047 F From the controller Note: * variable resistor is not used for display contrast fine adjustment, the V LC75848T VDD COM1 COM2 VSS COM3 COM4 COM5 COM6 VLCD COM7 VLCD0 ...

Page 33

... 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 April, 2002. Specifications and information herein are subject to change without notice. LC75848T VDD COM1 COM2 VSS ...

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