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| 型号： | C505L |
| 厂商： | SIEMENS AG |
| 英文描述： | Microcontrollers(8位微控制器) |
| 中文描述： | 微控制器（8位微控制器） |
| 文件页数： | 6/25页 |
| 文件大小： | 113K |
| 代理商： | C505L |
LCD Control
Using the C505L
6 of 25
AP0829 05.99
Figure 3:
Liquid Crystal with Externally Applied Potential Difference
2.2
Multiple Backplanes to Reduce the Pin Count
For the simple LCD shown in Figure 1, the bottom electrode covers the entire surface of
the LCD. This electrode is referred to as a backplane. The segments are defined by the
shape of the top electrodes in Figure 1. So, in order to individually control each segment,
a wire (and a pin) must be connected to each electrode on the top surface, and one
additional pin will be needed for the backplane. For displays with a large number of
segments, this solution is not practical.
To reduce the number of pins required to drive the display, often more than one back-
plane is used. When there is more than one backplane, more than one electrode (on the
top layer) can be connected to the same pin as shown by the electrode configurations in
Figure 4. When 4 backplanes are used each new pin can control 4 segments.
The pins connected to the electrodes on the top surface will be referred to as columnpins.
The backplane pins will be referred to as row pins. Having multiple row (backplane) pins
allows the row and column pins to form a matrix, so that each segment can be individually
controlled by selectively applying voltage to the appropriate row and column pin.
Liquid
Crystal
Molecules
Polarizing
Filter
Polarizing
Filter
No Light Can
Pass Through
The Bottom
Filter
Transparent
Electrode
Transparent
Electrode
+
-
Polarization
of Light
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相关代理商/技术参数 |
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|---|---|
| C505-L | 制造商:INFINEON 制造商全称:Infineon Technologies AG 功能描述:8-Bit Single-Chip Microcontroller |
| C505L_1 | 制造商:INFINEON 制造商全称:Infineon Technologies AG 功能描述:8-Bit CMOS Microcontroller |
| C505L4EMCCFXQMA1 | 功能描述:IC MCU 32BIT 80MQFP 制造商:infineon technologies 系列:* 零件状态:最後搶購 标准包装:1 |
| C505L4EMCCFXUMA1 | 功能描述:IC MCU 32BIT 80MQFP 制造商:infineon technologies 系列:* 零件状态:最後搶購 标准包装:1 |
| C505-LM | 制造商:INFINEON 制造商全称:Infineon Technologies AG 功能描述:8-Bit CMOS Microcontroller |
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