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參數(shù)資料
| 型號(hào)： | HD66522 |
| 廠商： | Hitachi,Ltd. |
| 英文描述： | 160-Channel Column Driver with Internal Bit-Map RAM for Reflective Color Display and Grayscale Display(點(diǎn)陣圖形LCD160通道驅(qū)動(dòng)器) |
| 中文描述： | 160通道，內(nèi)置欄位為反射式彩色顯示和灰度顯示屏（點(diǎn)陣圖形LCD160通道驅(qū)動(dòng)器地圖RAM驅(qū)動(dòng)器） |
| 文件頁(yè)數(shù)： | 38/47頁(yè) |
| 文件大小： | 276K |
| 代理商： | HD66522 |
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HD66522
38
Power Supply circuit
To drive the LCD using multi-line technique, 5-level power supply is necessary; two for HD66522, two for
HD66523R and one for both. These levels can be generated by dividing the VRH–VRL power supply using
resistive divider and buffered with voltage followers to reduce impedance. Figure 33 shows a example of
the power supply circuit. A DC/DC convertor module which generates all voltages is used in this circuit.
The voltages which are supplied to VCL, VCH and VM must keep following equations:
GND < VCL
VM = 1/2 (VRH–VRL) = 1/2 (VCH–VCL)
4V < VCH < 6V
Please notice that VCL level is near GND level, thus a operational amplifier which can output such level
voltage must be used.
V
CC
+
–
+
–
+
–
Contrast
control
DC/DC
convertor
VLCD
Vop
V
EE
7R
1R
1R
7R
VLCD for HD66523R
VCH
V
CC
VM
VCL
GND
V
EE
for HD66522
for HD66523R
Figure 33 Example of power supply circuit
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| HD66523R | 240-Channel Common Driver with Internal LCD Timing Circuit(帶內(nèi)部LCD定時(shí)電路的240通道驅(qū)動(dòng)器) |
| HD66701 | Dot Matrix Liquid Crystal Display Controller/Driver(點(diǎn)陣液晶顯示控制器/驅(qū)動(dòng)器) |
| HD66702 | Dot Matrix Liquid Crystal Display Controller/Driver(點(diǎn)陣液晶顯示控制器/驅(qū)動(dòng)器) |
| HD66702R | Low-Power Dot-Matrix Liquid Crystal Display Controller/Driver with Key Scan Function |
| HD66727A04TA0L | Low-Power Dot-Matrix Liquid Crystal Display Controller/Driver with Key Scan Function |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| HD66523 | 制造商:未知廠家 制造商全稱(chēng):未知廠家 功能描述:LCD Display Driver |
| HD66523R | 制造商:未知廠家 制造商全稱(chēng):未知廠家 功能描述:LCD Display Driver |
| HD66702 | 制造商:未知廠家 制造商全稱(chēng):未知廠家 功能描述:LCD Display Driver |
| HD66702R | 制造商:HITACHI 制造商全稱(chēng):Hitachi Semiconductor 功能描述:Low-Power Dot-Matrix Liquid Crystal Display Controller/Driver with Key Scan Function |
| HD66702RA00F | 制造商:未知廠家 制造商全稱(chēng):未知廠家 功能描述:LCD Display Driver |
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