lc75842e Sanyo Semiconductor Corporation, lc75842e Datasheet

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lc75842e

Manufacturer Part Number
lc75842e
Description
General-purpose 1/2 Duty Lcd Display Driver
Manufacturer
Sanyo Semiconductor Corporation
Datasheet
Ordering number : ENN4966C
Overview
The LC75842E and LC75842M are 1/2 duty general-
purpose LCD display drivers for applications such as
microprocessor-controlled electronic tuning. They can
drive up to 54 segments directly.
Features
• 1/2 duty, 1/2 bias drive of up to 54 segments
• Serial data input supports CCB* format communication
• Backup function which is based on a power saving
• High generality, since display data is displayed directly
• The display can be forced to the off state with the INH
• RC oscillator circuit
*
with the system controller.
mode and all segments off functions that are controlled
by serial data.
without decoder intervention.
pin.
• 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.
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN
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
General-Purpose 1/2 Duty LCD Display Driver
Package Dimensions
unit: mm
3162C-QFP36
unit: mm
3204-MFP36S
92501TN (OT)/41096HA (OT)/61595HA (OT) No. 4966-1/10
LC75842E, LC75842M
(0.9)
28
36
27
1
0.65
[LC75842M]
[LC75842E]
9.0
7.0
0.3
19
9
18
10
SANYO: MFP36S
SANYO: QFP36
CMOS IC
0.15

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lc75842e Summary of contents

Page 1

... Ordering number : ENN4966C Overview The LC75842E and LC75842M are 1/2 duty general- purpose LCD display drivers for applications such as microprocessor-controlled electronic tuning. They can drive segments directly. Features • 1/2 duty, 1/2 bias drive segments • Serial data input supports CCB* format communication with the system controller. • ...

Page 2

... INH switching time Electrical Characteristics in the Allowable Operating Ranges Parameter Hysteresis voltage Input high level current Input low level current Output high level voltage Output low level voltage Output middle level voltage Oscillator frequency Current drain LC75842E, LC75842M = Symbol Conditions V max ...

Page 3

... 50 Pin Assignments 27 28 OSC V DD INH V SS LC75842E COM2 COM1 36 1 LC75842E, LC75842M V IH tøH tøL tcp tcs tdh V IH tøL tøH tcp tcs tds tdh Figure S18 S17 S16 36 S15 S14 S13 ...

Page 4

... Power supply. Provide a power supply voltage of between 4.0 and 6 Power supply. Connect this pin to ground. SS LC75842E, LC75842M SEGMENT DRIVER & LATCH SHIFT REGISTER CCB INTERFACE Function is f /512 Hz. O OSC ) .....Display off (S1 to S27, COM1 and COM2 = low ...

Page 5

... CCB address 8 bits CCB address 8 bits LC75842E, LC75842M D25 Display data 28 bits D29 D30 D31 D53 D54 Display data 26 bits D26 D27 D28 ...

Page 6

... Note: The following type of transfer cannot be used when fewer than 29 segments are used LC75842E, LC75842M D25 Display data 28 bits D29 D30 D31 D53 D54 Display data ...

Page 7

... Control Data Functions 1. BU: Control data for specifying normal mode or power saving mode This control data bit is used to control the normal mode/power saving mode state of the LC75842E and LC75842M Normal mode 1 Power saving mode (The OSC pin oscillator is stopped and the common and segment output pins go to the V 2 ...

Page 8

... INH pin high after the transfer completes. (See Figure 3 INH INH CE Display data and control data transfer Internal data LC75842E, LC75842M f OSC [Hz] 512 A03199 VIL t1 tc VIL Undefined Defined Figure 3 V ...

Page 9

... Notes on Transferring Display Data from the Controller Since the LC75842E and LC75842M take the display data (D1 to D54) in two separate transfer operations as shown in Figure 2, we recommend that all the display data be transferred within 30 [ms] to maintain the quality of the displayed image. Sample Display ...

Page 10

... 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 September, 2001. Specifications and information herein are subject to change without notice. LC75842E, LC75842M PS No. 4966-10/10 ...

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