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參數(shù)資料
| 型號(hào)： | HD66740WTB0 |
| 廠商： | Hitachi,Ltd. |
| 英文描述： | 112 x 80-dot Graphics LCD Controller/Driver |
| 中文描述： | 112 × 80點(diǎn)圖形LCD控制器/驅(qū)動(dòng)器 |
| 文件頁(yè)數(shù)： | 46/95頁(yè) |
| 文件大小： | 856K |
| 代理商： | HD66740WTB0 |
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HD66740
46
When an Internal Booster and Internal Operational Amplifiers are Used
To supply LCD drive voltage using the internal booster, circuits should be connected as shown in figure
23. Here, contrast can be adjusted through the CT bits of the contrast control instruction. Temperature can
be compensated either through the CT bits or by controlling the reference voltage for the booster (Vci
pin) using a thermistor.
Note that Vci is both a reference voltage and power supply for the booster. The reference voltage must
therefore be adjusted using an emitter-follower or a similar element so that sufficient current can be
supplied. In this case, Vci must be equal to or smaller than the V
CC
level.
The HD66740 incorporates a voltage-follower operational amplifier for each of V1 to V5 to reduce
current flowing through the internal bleeder-resistors, which generate different liquid-crystal drive
voltages. Thus, the potential differences between V
LCD
and V1 and between V5 and GND must be 0.4 V
or higher.
Note that the OPOFF pin must be grounded when using the operational amplifiers. Place a capacitor of
about 0.1 μF to 0.5 μF between each internal operational amplifier V1OUT to V5OUT output and GND
and stabilize the output level of the operational amplifier.
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| HD66751 | 128 x 128-dot Graphics LCD Controller/Driver with Four-grayscale Functions |
| HD66750TB0 | 122 x 32 pixel format, Compact LCD size |
| HD66750 | 128 x 128-dot Graphics LCD Controller/Driver with Four-grayscale Functions |
| HD66751TB0 | 128 x 128-dot Graphics LCD Controller/Driver with Four-grayscale Functions |
| HD66760 | 104 X 80-dot Graphics LCD Controller/Driver for 256 Colors |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| HD66741 | 制造商:HITACHI 制造商全稱:Hitachi Semiconductor 功能描述:128 x 128-dot Graphics LCD Controller/Driver with Four-grayscale Functions |
| HD66750 | 制造商:HITACHI 制造商全稱:Hitachi Semiconductor 功能描述:128 x 128-dot Graphics LCD Controller/Driver with Four-grayscale Functions |
| HD66750TB0 | 制造商:HITACHI 制造商全稱:Hitachi Semiconductor 功能描述:128 x 128-dot Graphics LCD Controller/Driver with Four-grayscale Functions |
| HD66751 | 制造商:HITACHI 制造商全稱:Hitachi Semiconductor 功能描述:128 x 128-dot Graphics LCD Controller/Driver with Four-grayscale Functions |
| HD66751S | 制造商:未知廠家 制造商全稱:未知廠家 功能描述: |
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