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參數(shù)資料
| 型號(hào)： | HD66727A03TA0L |
| 廠(chǎng)商： | Hitachi,Ltd. |
| 英文描述： | Low-Power Dot-Matrix Liquid Crystal Display Controller/Driver with Key Scan Function |
| 中文描述： | 低功耗點(diǎn)陣液晶顯示控制器/鍵掃描功能驅(qū)動(dòng)程序 |
| 文件頁(yè)數(shù)： | 61/97頁(yè) |
| 文件大?。?/td> | 513K |
| 代理商： | HD66727A03TA0L |
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HD66727
61
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
34. 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 HD66727 incorporates a voltage-follower operational amplifier for each of V1 to V5 to reduce current
flowing through the internal bleeder-resistors, which generate different levels of liquid-crystal drive
voltages. Thus, potential differences between V
CC
and V1 and between V
EE
and V5 must be 0.4V or greater.
Note that the OPOFF pin must be grounded when using the operational amplifiers.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| HD66727A04 | 制造商:未知廠(chǎng)家 制造商全稱(chēng):未知廠(chǎng)家 功能描述:LCD Display Driver |
| HD66727A04BP | 制造商:未知廠(chǎng)家 制造商全稱(chēng):未知廠(chǎng)家 功能描述:LCD Display Driver |
| HD66727A04TA0 | 制造商:未知廠(chǎng)家 制造商全稱(chēng):未知廠(chǎng)家 功能描述:LCD Display Driver |
| HD66727A04TA0L | 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 |
| HD66728 | 制造商:HITACHI 制造商全稱(chēng):Hitachi Semiconductor 功能描述:128 x 128-dot Graphics LCD Controller/Driver with Four-grayscale Functions |
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