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参数资料
| 型号： | MSM6222 |
| 厂商： | OKI SEMICONDUCTOR CO., LTD. |
| 英文描述： | DOT MATRIX LCD CONTROLLER WITH 16-DOT COMMON DRIVER AND 40-DOT SEGMENT DRIVER |
| 中文描述： | 点阵LCD控制器的16交通部通用驱动器和40段驱动交通部 |
| 文件页数： | 27/45页 |
| 文件大小： | 390K |
| 代理商： | MSM6222 |
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MSM6222B-xx
Semiconductor
33/45
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 COM9 to
COM16 are output for extinguishing.
Likewise, when the 5 x 10 dots character font (1-line is set), the COM signals COM12 to COM16
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 MSM6222B-xx 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 VLCD (LCD drive voltage),
these values have to be determined through actual experimentation in combination with the
LCD.
(Example set values: R = 3.3 to 10kW, VR = 10 to 30kW, and C = 0.0022 mF to 0.047 mF)
Figure 17 shows an application circuit for the MSM6222B-xx and MSM5259 including a bias
circuit.
The bias voltage has to maintain the following potential relation:
VDD > V1 > V2 ≥ V3 > V4 > V5
Figure 4
In the case of 1-line 16 characters display (5 x 7 dots/font)
COM1
SEG1
SEG40
O1
O40
MSM6222B-xx
DO
CP
DF
L
DI1
CP
MSM5259
DF
LOAD
DO20 DI21
LCD
COM8
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MSM6222B | 制造商:OKI 制造商全称:OKI electronic componets 功能描述:DOT MATRIX LCD CONTROLLER WITH 16-DOT COMMON DRIVER AND 40-DOT SEGMENT DRIVER |
| MSM6222B-01 | 制造商:OKI 制造商全称:OKI electronic componets 功能描述:DOT MATRIX LCD CONTROLLER WITH 16 DOT COMMON DRIVER AND 40 DOT SEGMENT DRTVER |
| MSM6222B-01GS-BL | 制造商:ROHM Semiconductor 功能描述: |
| MSM6222B-XX | 制造商:OKI 制造商全称:OKI electronic componets 功能描述:DOT MATRIX LCD CONTROLLER WITH 16-DOT COMMON DRIVER AND 40-DOT SEGMENT DRIVER |
| MSM-6226 | 制造商:ICP DAS USA, IN 功能描述:24-Port L2 Plus Managed Fast Ethernet Switch + 2 TP/SFP Giga |
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