參數(shù)資料
型號(hào)： ML9040A
廠商： OKI SEMICONDUCTOR CO., LTD.
英文描述： DOT MATRIX LCD CONTROLLER WITH 16-DOT COMMON DRIVER AND 40-DOT SEGMENT DRIVER(16X40點(diǎn)陣LCD驅(qū)動(dòng)器)
中文描述： 點(diǎn)陣LCD控制器，16點(diǎn)通用驅(qū)動(dòng)程序和40個(gè)點(diǎn)段驅(qū)動(dòng)（16X40點(diǎn)陣液晶驅(qū)動(dòng)器）
文件頁(yè)數(shù)： 33/49頁(yè)
文件大小： 515K
代理商： ML9040A
ML9040A-Axx/-Bxx
Semiconductor
33/49
PEDL9040A-03
Interface with LCD and MSM5259
Display examples when setting the 5 x 7 dots character font 1-line mode, 5 x 10 dots character font
1-line mode, and 5 x 7 dots character font 2-line mode through instructions are shown in Figures
4, 5, and 6, respectively.
When the 5 x 7 dots character font is set in the 1-line display mode, the COM signals COM
9
to
COM
16
are output for extinguishing.
Likewise, when the 5 x 10 dots character font (1-line is set), the COM signals COM
12
to COM
16
are output for display-off.
The display example shows a combination of 16 characters (32 characters for the 2-line display
mode) and the LCD. When the number of MSM5259s are increased according to the increase in
the number of characters, it is possible to display a maximum of 80 characters.
Besides, it is necessary to generate bias voltage required for LCD operation by splitting resistors
outside the IC to input it to ML9040A-Axx/-Bxx and MSM5259.
Examples of these bias voltages are shown in Figures 7, 8, 9, and 10. Basically, this can be done
by dividing the voltage by the resistors as shown in Figures 7 and 8. If the value of resistor R is
made larger to reduce system power consumption, the LCD operating margin decreases and the
LCD driving waveform is distorted. To prevent this, a by-pass capacitor is serially connected to
the resistor to lower voltage division impedance caused by the splitting of resistors as shown in
Figures 9 and 10.
As the values of R, VR, and C vary according to the LCD size used and V
LCD
(LCD drive voltage),
these values have to be determined through actual experimentation in combination with the
LCD.
(Example set values: R = 3.3 to 10k
W
, V
R
= 10 to 30k
W
, and C = 0.0022
m
F to 0.047
m
F)
Figure 17 shows an application circuit for the ML9040A-Axx/-Bxx and MSM5259 including a
bias circuit.
The bias voltage has to maintain the following potential relation:
V
DD
> V
1
> V
2
≥
V
3
> V
4
> V
5
In the case of 1-line 16 characters display (5 x 7 dots/font)
Figure 4
COM
1
SEG
1
SEG
40
O
1
O
40
DO
CP
DF
L
DI
1
CP
MSM5259
DF
LOAD
DO
20
DI
21
LCD
COM
8
ML9040A-Axx/-Bxx
相關(guān)PDF資料
PDF描述
ML9040 DOT MATRIX LCD CONTROLLER WITH 16-DOT COMMON DRIVER AND 40-DOT SEGMENT DRIVER
ML9040-Axx DOT MATRIX LCD CONTROLLER WITH 16-DOT COMMON DRIVER AND 40-DOT SEGMENT DRIVER
ML9040-Bxx DOT MATRIX LCD CONTROLLER WITH 16-DOT COMMON DRIVER AND 40-DOT SEGMENT DRIVER
ML9041 DOT MATRIX LCD CONTROLLER DRIVER
ML9042 DOT MATRIX LCD CONTROLLER DRIVER
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
ML9040A-A01GAZ03A-7 功能描述:LCD 驅(qū)動(dòng)器 LCD DOT Matrix Controller, 16/40 RoHS:否 制造商:Maxim Integrated 數(shù)位數(shù)量:4.5 片段數(shù)量:30 最大時(shí)鐘頻率:19 KHz 工作電源電壓:3 V to 3.6 V 最大工作溫度:+ 85 C 最小工作溫度:- 20 C 封裝 / 箱體:PDIP-40 封裝:Tube
ML9040A-A01GAZ0A-ML 制造商:ROHM Semiconductor 功能描述:
ML9040A-AXX 制造商:OKI 制造商全稱:OKI electronic componets 功能描述:DOT MATRIX LCD CONTROLLER WITH 16-DOT COMMON DRIVER AND 40-DOT SEGMENT DRIVER
ML9040A-B01GAZ03A-7 功能描述:LCD 驅(qū)動(dòng)器 LCD DOT Matrix Controller, 16/40 RoHS:否 制造商:Maxim Integrated 數(shù)位數(shù)量:4.5 片段數(shù)量:30 最大時(shí)鐘頻率:19 KHz 工作電源電壓:3 V to 3.6 V 最大工作溫度:+ 85 C 最小工作溫度:- 20 C 封裝 / 箱體:PDIP-40 封裝:Tube
ML9040A-BXX 制造商:OKI 制造商全稱:OKI electronic componets 功能描述:DOT MATRIX LCD CONTROLLER WITH 16-DOT COMMON DRIVER AND 40-DOT SEGMENT DRIVER
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