ML9471 [ROHM]
Ml9471是带有1/3、1/4及1/5Duty切换引脚的动态显示用LCD驱动器,选择1/5Duty时可直接驱动多达400段、选择1/4Duty时可直接驱动多达320段、选择1/3Duty时可直接驱动多达240段的LCD。;![ML9471](http://pdffile.icpdf.com/pdf2/p00369/img/icpdf/ML9471_2253263_icpdf.jpg)
型号: | ML9471 |
厂家: | ![]() |
描述: | Ml9471是带有1/3、1/4及1/5Duty切换引脚的动态显示用LCD驱动器,选择1/5Duty时可直接驱动多达400段、选择1/4Duty时可直接驱动多达320段、选择1/3Duty时可直接驱动多达240段的LCD。 驱动 CD 驱动器 |
文件: | 总21页 (文件大小:422K) |
中文: | 中文翻译 | 下载: | 下载PDF数据表文档文件 |
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Dear customer
LAPIS Semiconductor Co., Ltd. ("LAPIS Semiconductor"), on the 1st day of October,
2020, implemented the incorporation-type company split (shinsetsu-bunkatsu) in which
LAPIS established a new company, LAPIS Technology Co., Ltd. (“LAPIS
Technology”) and LAPIS Technology succeeded LAPIS Semiconductor’s LSI business.
Therefore, all references to "LAPIS Semiconductor Co., Ltd.", "LAPIS Semiconductor"
and/or "LAPIS" in this document shall be replaced with "LAPIS Technology Co., Ltd."
Furthermore, there are no changes to the documents relating to our products other than
the company name, the company trademark, logo, etc.
Thank you for your understanding.
LAPIS Technology Co., Ltd.
October 1, 2020
FEDL9471-01
Issue Date: Aug. 21, 2008
ML9471
1/3, 1/4, 1/5 Duty 80 Output LCD Driver
GENERAL DESCRIPTION
The ML9471 is a LCD driver for dynamic display providing 3-duty-switchable pins (1/3, 1/4, 1/5 duty). It can
directly drive LCDs of up to 400, 320 and 240 segments when 1/5, 1/4 and 1/3 duty are selected respectively.
FEATURES
• Operating range
Supply voltage
Operating temperature range
• Segment output
1/5 duty
: 3.0 to 5.5 V
: 40 to + 105C
: 80 pins
: Up to 400 segments can be displayed.
: Up to 320 segments can be displayed.
: Up to 240 segments can be displayed.
: 4 MHz
1/4 duty
1/3 duty
• Serial transfer clock frequency
• Serical interface with CPU
:Through three input pins (DATA_IN, LOAD, and CLOCK)
• Built-in oscillator circuit for COMMON signals
• One-to-one correspondence between input data and output data
When input data is at “H” level
When input data is at “L” level
: Display goes on.
: Display goes off.
• The entire display can be turned off. (BLANK pin)
• Package options
100-pin plastic TQFP (TQFP100-P-1414-0.50-K) (Product name: ML9471TB)
1/20
FEDL9471-01
LAPIS Semiconductor
ML9471
BLOCK DIAGRAM
SEG1
SEG80
BLANK
80-Dot Segment Driver
80-Ch Data Selector
80
80
80
80
80
80-Bit
80-Bit
80-Bit
80-Bit
80-Bit
Latch 5
Latch 4
Latch 3
Latch 2
Latch 1
LATCH
SELECTOR
LOAD
80
DATA_IN
CLOCK
88-Stage Shift Register
OSC_OUT
OSC_OUT
OSC_IN
OSC
TIMING
GENERATOR
VLC1
VLC2
VLC3
DSEL1
DSEL2
COM1
COM2
COM3
COM4
COM5
COMMON
Driver
VDD
GND
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FEDL9471-01
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ML9471
PIN CONFIGURATION (TOP VIEW)
SEG51
1
75
74
73
72
71
70
69
68
67
66
65
64
63
62
61
60
59
58
57
56
55
54
53
52
51
SEG25
SEG24
2
SEG52
SEG53
3
SEG23
SEG22
4
SEG54
SEG55
5
SEG21
SEG20
SEG19
SEG18
6
SEG56
SEG57
SEG58
SEG59
7
8
9
SEG17
SEG16
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
SEG60
SEG61
SEG15
SEG14
SEG62
SEG63
SEG13
SEG12
SEG11
SEG10
SEG64
SEG65
SEG66
SEG67
SEG9
SEG8
SEG68
SEG69
SEG70
SEG71
SEG72
SEG73
SEG7
SEG6
SEG5
SEG4
SEG3
SEG2
SEG74
SEG75
SEG1
100-Pin Plastic TQFP
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FEDL9471-01
LAPIS Semiconductor
ML9471
PIN DESCRIPTION
Symbol
Type
Description
Pins for oscillation. The oscillator circuit is configured by externally connecting two
resistors and a capacitor. Make the wiring length as short as possible, because
the resistor connected to the OSC_IN pin has a higher value and the circuit is
susceptible to external noise.
OSC_IN
OSC_OUT
OSC_OUT
I
O
O
Serial data input pin. The display goes on when input data is at a “H” level, and it
goes off when input data is at “L” level.
DATA_IN
CLOCK
LOAD
I
I
I
Shift clock input pin. Data from the DATA_IN pin is transferred in synchronization
with the rising edge of the shift clock.
Load signal input pin. Serially input data is transferred to the 80-bit latch at “H”
level of this load signal, then held at “L” level.
Input pin that turns off all segments. The entire display goes off when “L” level is
applied to this pin. The display returns to the previous state when “H” level is
applied.
BLANK
l
Input pins to select 1/3, 1/4, or 1/5 duty. Following shows how each duty is
selected.
DSEL2
DSEL1
Duty selected
DSEL1
DSEL2
I
I
L
L
L
H
X
1/3
1/4
1/5
H
X: Don’t care
COM1 to
COM5
Display output pins for LCD. These pins are connected to the COMMON side of
the LCD panel.
O
O
Display output pins for LCD. Theses pins are connected to the SEGMENT side of
the LCD panel. For the correspondence between the output of these pins and
input data, see the “Data Structure” Section.
SEG1 to
SEG80
Bias pins for LCD driver. Through these pins, bias voltages for the LCD are
externally supplied. The bias potential must meet the following condition:
VLC1, VLC2,
VLC3
—
—
V
DD > VLC1 VLC2 > VLC3 =GND
VDD, GND
Supply voltage pin and ground pin.
Note: Built-in schmitt circuit is used for all input pins.
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FEDL9471-01
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ML9471
ABSOLUTE MAXIMUM RATINGS
Parameter
Supply Voltage
Symbol
VDD
VI
Condition
Ta = 25°C
Ta = 25°C
—
Rating
–0.3 to 6.5
–0.3 to VDD+0.3
–55 to 150
700
Unit
V
Input Voltage
V
Storage Temperature
Power Dissipation
Output Current
TSTG
PD
°C
Ta < 105°C
—
mW
mA
IO
–2.0 to 2.0
RECOMMENDED OPERATING CONDITIONS
Parameter
Supply Voltage
Symbol
VDD
Condition
Range
3.0 to 5.5
1 to 4
Unit
V
VLC3 = GND
CLOCK Frequency
fCP
—
—
MHz
°C
Operating Temperature
Ta
–40 to 105
Oscillator Circuit
Parameter
Symbol
R0
Applicable pin
OSC_OUT
Condition
Min.
20
Max.
120
0.01
360
Unit
k
F
Oscillator Resistance
Oscillator Capacitance
Current Limiting Resistance
Common Signal Frequency
—
—
—
—
C0
OSC_OUT
0.00047
62
R1
OSC_IN
k
Hz
fCOM
COM1 to COM5
25
250
Note: See Section, “Reference Data”, for the resistor and capacitor values in the table.
RC Values in Oscillator Circuit
Parameter
Symbol
R0
Applicable pin
OSC_OUT
OSC_OUT
OSC_IN
1/3 duty
68
1/4 duty
51
1/5 duty
43
Unit
k
F
Oscillator Resistance
Oscillator Capacitance
Current Limiting Resistance
C0
0.001
220
0.001
160
0.001
130
R1
k
Example of an oscillator circuit:
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ML9471
ELECTRICAL CHARACTERISTICS
DC Characteristics
(VDD = 3.0 to 5.5 V, Ta = –40 to +105°C, unless otherwise specified)
Parameter
Symbol Applicable pin
Condition
Min.
Max.
Unit
CLOCK,
VIH1
“H” Input Voltage 1
—
0.85 VDD
VDD
V
OSC_IN
CLOCK,
VIL1
“L” Input Voltage 1
—
GND
0.15 VDD
V
OSC_IN
“H” Input Voltage 2
“L” Input Voltage 2
“H” Input Current
“L” Input Current
VIH2
VIL2
*1
—
0.8 VDD
GND
VDD
0.2 VDD
10
V
V
*1
—
IIH
All input pins
All input pins
VDD = 5.5 V, VI = VDD
VDD = 5.5 V, VI = 0 V
IO = 100 A
—
A
A
V
IIL
10
—
VOC0a
VOC1
VOC2
VOC3
VOS0
VOS1
VOS2
VOS3
VDD 1
VLC1 1
VLC2 1
—
—
IO = 100 A *3
VLC1 +1
VLC2 +1
VLC3 +1
—
V
COMMON Output
Voltage
COM1 - COM5 VDD = 3.0 V
IO = 100 A *4
IO = +100 A *5
IO = 10 A
V
V
VDD 1
VLC1 1
VLC2 1
—
V
Segment Output
Voltage
IO = 10 A *3
IO = 10 A *4
IO = +10 A *5
VLC1 +1
VLC2 +1
VLC3 +1
V
SEG1 - SEG80, VDD = 3.0 V
V
V
Supply Current
IDD
VDD
VDD = 5.0 V, no load. *2
—
0.5
mA
*1 Applies to all input pins excluding CLOCK and OSC_IN.
*2 R0 = 51 k R1 = 160 k C0 = 0.001 F
*3 VLC1 = 2.0V
*4 VLC2 = 1.0V
*5 VLC3 = 0V
6/20
FEDL9471-01
LAPIS Semiconductor
ML9471
AC Characteristics
(VDD =3.0 to 5.5V, Ta = –40 to +105°C, unless otherwise specified)
Parameter
Clock “H” Time
Symbol
tWHC
tWLC
tDS
Condition
Min.
70
Typ.
—
—
—
—
—
—
—
—
—
—
—
—
Max.
—
Unit
ns
—
—
—
—
—
—
—
—
—
—
—
—
Clock “L” Time
70
—
ns
Data Set-up Time
Data Hold Time
50
—
ns
tDH
50
—
ns
Load “H” Time
tWHL
tCL
100
100
100
—
—
ns
Clock-to-load Time
Load-to-Clock Time
Clock Rise time, Fall time
OSC_IN Input Frequency
OSC_IN “H” Time
OSC_IN “L” Time
—
ns
tLC
—
ns
tR1, tF1
fOSC
50
20
—
ns
—
kHz
s
tWHO
tWLO
tR2, tF2
20
20
—
s
OSC_IN Rise time, Fall time
—
100
ns
7/20
FEDL9471-01
LAPIS Semiconductor
ML9471
POWER-ON/OFF TIMING
* VLC1, VLC2 are applied when VDD is applied to external bias resistor.
INITIAL SIGNAL TIMING
VDD
BLANK
* Once VDD is applied, BLANK should be applied to ‘L’ level to make all SEGMENTs off until first group of
display data is latched.
8/20
FEDL9471-01
LAPIS Semiconductor
ML9471
FUNCTIONAL DESCRIPTION
Operation
As shown in “Data Structure”, the display data consists of the data field corresponding to the output for turning
the segments on or off and the select field that selects field that selects the input block of data. Data input to the
DATA_IN pin is loaded into the 88-bit shift register, transferred to the 80-bit latch while the load signal is at “H”
level, and then output via the 80-dot segment driver.
Data Structure
Input data
Correspondence between select bits and COM1 to COM5
C5
0
C4
0
C3
0
C2
0
C1
1
Description
Display data corresponding to COM1
Display data corresponding to COM2
Display data corresponding to COM3
Display data corresponding to COM4
Display data corresponding to COM5
0
0
0
1
0
0
0
1
0
0
0
1
0
0
0
1
0
0
0
0
Notes: 1. Arbitrary data can be set for the dummy bits.
2. Select bit, C1 to C5, selects 80-bit latches that correspond to COM1 to COM5, respectively.
Therefore, if “1” is set for more than one select bit, data is set to all the corresponding 80-bit latches.
Example:
If “1” is set to all the select bits C1 to C5, the display data of D1 to D80 is set to all the 80-bit latches that
correspond to COM1 to COM5.
9/20
FEDL9471-01
LAPIS Semiconductor
COM1 – COM5 Timing Chart:
VDD
ML9471
VLC1
VLC2
VLC3
COM1
VDD
VLC1
VLC2
VLC3
COM2
COM3
VDD
VLC1
VLC2
VLC3
1/3 DUTY COM
TIMING
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FEDL9471-01
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ML9471
SEGn True Value Table:
LATCH1 LATCH2 LATCH3 LATCH4 LATCH5 COM1 COM2 COM3 COM4 COM5
SEGn
0
0
0
0
1
“H”
“M2”
“M1”
“H”
“M2”
“M1”
“M2”
“M1”
“H”
“M2”
“M1”
“M2”
“M1”
“M2”
“M1”
“H”
“M2”
“M1”
“M2”
“M1”
“M2”
“M1”
“M2”
“M1”
“H”
“M1”
“M2”
“M1”
“M2”
“M1”
“M2”
“M1”
“M2”
“L”
“L”
“M2”
“M1”
“M2”
“M1”
“M2”
“M1”
“M2”
“M1”
“L”
“M2”
“M1”
“M2”
“M1”
“M2”
“M1”
“L”
“M2”
“M1”
“M2”
“M1”
“L”
“M2”
“M1”
“L”
“H”
*Note: “H” = VDD; “M1” = VLC1; “M2” = VLC2; “L” = VLC3=GND
11/20
FEDL9471-01
LAPIS Semiconductor
ML9471
Timing Chart FOR 1/3 DUTY DRIVE MODE:
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FEDL9471-01
LAPIS Semiconductor
ML9471
Timing Chart FOR 1/4 DUTY DRIVE MODE:
VDD
COM1
COM2
COM3
COM4
VLC1
COM1
VLC2
VLC3
VDD
VLC1
COM2
COM3
COM4
VLC2
VLC3
VDD
VLC1
VLC2
VLC3
VDD
VLC1
VLC2
VLC3
VDD
VLC1
VLC2
VLC3
SEG1
SEG2
VDD
VLC1
VLC2
VLC3
13/20
FEDL9471-01
LAPIS Semiconductor
ML9471
Timing Chart FOR 1/5 DUTY DRIVE MODE:
VDD
COM1
COM2
COM3
COM4
COM5
VLC1
COM1
VLC2
VLC3
VDD
VLC1
COM2
COM3
COM4
VLC2
VLC3
VDD
VLC1
VLC2
VLC3
VDD
VLC1
VLC2
VLC3
VDD
VLC1
VLC2
VLC3
COM5
VDD
VLC1
VLC2
VLC3
SEG1
SEG2
VDD
VLC1
VLC2
VLC3
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FEDL9471-01
LAPIS Semiconductor
ML9471
APPLICATION CIRCUITS
(For 1/4 duty)
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FEDL9471-01
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ML9471
REFERENCE DATA
The data shown in this section is for reference (a metal film resistor and a film capacitor are used). Resistor and
capacitor values must be determined based on experiments.
Use the following expression to convert oscillation frequency to COMMON frame frequency (or vice versa):
fCOM=fOSC × Duty/16
fCOM
fOSC
Duty
: COMMON frame frequency
: Oscillation frequency
: e.g., 1/4 for 1/4 duty
For example, if fCOM=100Hz at 1/5 duty, the oscillation frequency is fOSC =8000Hz.
Ta=25°C
IDD vs. VDD
R0=51k
R1=160k
C0=0.001µF
1/4 duty
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0
1.5
2
2.5
3
3.5
4
4.5
5
5.5
6
6.5
VDD [V]
16/20
FEDL9471-01
LAPIS Semiconductor
ML9471
fOSC---R0,C0
ML9471 Oscillator Frequency Result
VDD=3V 25°C
100.00
10.00
1.00
0.00047µF | 62k
0.00047µF | 360k
0.01µF | 62k
0.01µF | 360k
0.10
0
25
50
75
100 125 150
R0[k]
ML9471 Oscillator Frequency Result
VDD=5.5V 25°C
100.00
fOSC[kHz]
10.00
0.00047µF | 62k
0.00047µF | 360k
0.01µF | 62k
0.01µF | 360k
1.00
0.10
0
25
50
75
100 125 150
R0[k]
17/20
FEDL9471-01
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ML9471
PACKAGE DIMENSIONS
(Unit: mm)
TQFP100-P-1414-0.50-K
Mirror finish
Package material
Lead frame material
Lead finish
Pin treatment
Package weight (g)
Rev. No./Last Revised
Epoxy resin
42 alloy
Sn-2Bi (Bi 2% typ.)
Solder plating (t5μm)
0.55 TYP.
5
1/Jul. 18, 2007
Notes for Mounting the Surface Mount Type Package
The surface mount type packages are very susceptible to heat in reflow mounting and humidity absorbed in
storage. Therefore, before you perform reflow mounting, contact ROHM's responsible sales person for the
product name, package name, pin number, package code and desired mounting conditions (reflow method,
temperature and times).
18/20
FEDL9471-01
LAPIS Semiconductor
ML9471
REVISION HISTORY
Page
Previous
Edition
Document No.
Date
Description
Current
Edition
PEDL9471-01
PEDL9471-02
PEDL9471-03
FEDL9471-01
Dec. 15, 2006
Jan. 15, 2007
Jan. 9, 2008
Aug. 21, 2008
–
–
–
–
–
Preliminary edition 1
–
–
–
Preliminary edition 2
Preliminary edition 3
Final edition 1
19/20
FEDL9471-01
LAPIS Semiconductor
ML9471
NOTICE
No copying or reproduction of this document, in part or in whole, is permitted without the consent of LAPIS
Semiconductor Co., Ltd.
The content specified herein is subject to change for improvement without notice.
The content specified herein is for the purpose of introducing LAPIS Semiconductor's products (hereinafter
"Products"). If you wish to use any such Product, please be sure to refer to the specifications, which can be
obtained from LAPIS Semiconductor upon request.
Examples of application circuits, circuit constants and any other information contained herein illustrate the
standard usage and operations of the Products. The peripheral conditions must be taken into account when
designing circuits for mass production.
Great care was taken in ensuring the accuracy of the information specified in this document. However, should
you incur any damage arising from any inaccuracy or misprint of such information, LAPIS Semiconductor
shall bear no responsibility for such damage.
The technical information specified herein is intended only to show the typical functions of and examples of
application circuits for the Products. LAPIS Semiconductor does not grant you, explicitly or implicitly, any
license to use or exercise intellectual property or other rights held by LAPIS Semiconductor and other parties.
LAPIS Semiconductor shall bear no responsibility whatsoever for any dispute arising from the use of such
technical information.
The Products specified in this document are intended to be used with general-use electronic equipment or
devices (such as audio visual equipment, office-automation equipment, communication devices, electronic
appliances and amusement devices).
The Products specified in this document are not designed to be radiation tolerant.
While LAPIS Semiconductor always makes efforts to enhance the quality and reliability of its Products, a
Product may fail or malfunction for a variety of reasons.
Please be sure to implement in your equipment using the Products safety measures to guard against the
possibility of physical injury, fire or any other damage caused in the event of the failure of any Product, such
as derating, redundancy, fire control and fail-safe designs. LAPIS Semiconductor shall bear no responsibility
whatsoever for your use of any Product outside of the prescribed scope or not in accordance with the
instruction manual.
The Products are not designed or manufactured to be used with any equipment, device or system which
requires an extremely high level of reliability the failure or malfunction of which may result in a direct threat
to human life or create a risk of human injury (such as a medical instrument, transportation equipment,
aerospace machinery, nuclear-reactor controller, fuel-controller or other safety device). LAPIS
Semiconductor shall bear no responsibility in any way for use of any of the Products for the above special
purposes. If a Product is intended to be used for any such special purpose, please contact a ROHM sales
representative before purchasing.
If you intend to export or ship overseas any Product or technology specified herein that may be controlled
under the Foreign Exchange and the Foreign Trade Law, you will be required to obtain a license or permit
under the Law.
Copyright 2008 - 2011 LAPIS Semiconductor Co., Ltd.
20/20
相关型号:
![](http://pdffile.icpdf.com/pdf2/p00363/img/page/ML9473_2221358_files/ML9473_2221358_1.jpg)
![](http://pdffile.icpdf.com/pdf2/p00363/img/page/ML9473_2221358_files/ML9473_2221358_2.jpg)
ML9473
ML9473是带有1/3、1/4及1/5Duty切换引脚的动态显示用LCD驱动器,选择1/5Duty时可直接驱动多达300段、选择1/4Duty时可直接驱动多达240段、选择1/3Duty时可直接驱动多达180段的LCD。
ROHM
![](http://pdffile.icpdf.com/pdf2/p00369/img/page/ML9477_2252961_files/ML9477_2252961_1.jpg)
![](http://pdffile.icpdf.com/pdf2/p00369/img/page/ML9477_2252961_files/ML9477_2252961_2.jpg)
ML9477
ML9477是带有1/3Duty和1/4Duty切换功能的动态显示用LCD驱动器,选择1/4Duty时可直接驱动多达128段,选择1/3Duty时可直接驱动多达96段的LCD。
ROHM
![](http://pdffile.icpdf.com/pdf2/p00362/img/page/ML9478C_2217232_files/ML9478C_2217232_1.jpg)
![](http://pdffile.icpdf.com/pdf2/p00362/img/page/ML9478C_2217232_files/ML9478C_2217232_2.jpg)
ML9478C
ML9478C由80位移位寄存器、320位数据锁存器、80组LCD驱动器、以及公共信号生成电路组成。静态显示时可直接驱动多达80段、1/2Duty显示时可直接驱动多达160段、1/3Duty显示时可直接驱动多达240段、1/4Duty显示时可直接驱动多达320段的LCD。三线串行接口和I2C接口可选。
ROHM
![](http://pdffile.icpdf.com/pdf2/p00358/img/page/ML9479E_2196239_files/ML9479E_2196239_1.jpg)
![](http://pdffile.icpdf.com/pdf2/p00358/img/page/ML9479E_2196239_files/ML9479E_2196239_2.jpg)
ML9479E
ML9479E由80位移位寄存器、640位数据锁存器、160组LCD驱动器、以及公共信号生成电路组成。静态显示时可直接驱动多达160段、1/2Duty显示时可直接驱动多达320段、1/3Duty显示时可直接驱动多达480段、1/4Duty显示时可直接驱动多达640段的LCD。三线串行接口和I2C接口可选。
ROHM
![](http://pdffile.icpdf.com/pdf2/p00368/img/page/ML9480_2249913_files/ML9480_2249913_1.jpg)
![](http://pdffile.icpdf.com/pdf2/p00368/img/page/ML9480_2249913_files/ML9480_2249913_2.jpg)
ML9480
ML9480由40位移位寄存器、160位数据锁存器、40组LCD驱动器、以及公共信号生成电路组成。静态显示时可直接驱动多达40段、1/2Duty显示时可直接驱动多达80段、1/3Duty显示时可直接驱动多达120段、1/4Duty显示时可直接驱动多达160段的LCD。三线串行接口和I2C接口可选。
ROHM
![](http://pdffile.icpdf.com/pdf2/p00360/img/page/ML9484_2204273_files/ML9484_2204273_1.jpg)
![](http://pdffile.icpdf.com/pdf2/p00360/img/page/ML9484_2204273_files/ML9484_2204273_2.jpg)
ML9484
ML9484由50位移位寄存器、200位数据锁存器、50组LCD驱动器、以及公共信号生成电路组成。静态显示时可直接驱动多达50段、1/2Duty显示时可直接驱动多达100段、1/3Duty显示时可直接驱动多达150段、1/4Duty显示时可直接驱动多达200段的LCD。
ROHM
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