參數(shù)資料
型號(hào)： HD66728
廠商： Hitachi,Ltd.
英文描述： 112 x 80-dot Graphics LCD Controller/Driver(112 x 80點(diǎn)圖形LCD控制器)
中文描述： 112 × 80點(diǎn)圖形LCD控制器/驅(qū)動(dòng)器（112 × 80點(diǎn)圖形液晶顯示控制器）
文件頁數(shù)： 81/138頁
文件大小： 2158K
代理商： HD66728
HD66728
81
When External Bleeder Resistors are Used
When internal operational amplifiers cannot fully drive the LCD panel used, V1 to V5 voltages can be
supplied through external bleeder resistors or external voltage follower operational amplifier (figure 46).
Here, the OPOFF pin must be set to the V
CC
level to turn off the internal operational amplifiers. Since the
internal contrast adjuster is disabled, contrast must be adjusted externally. Connection of external bleeder-
resistors can specify a given bias value from 1/4 to 1/10. Figure 46 shows connection for 1/10-bias drive
voltage generation. Internal boosters can be used as they are. However, use the external power supply since
the through current in bleeder resistors becomes large, loads in the internal booster are heavy, and the
boosting output voltage drops.
相關(guān)PDF資料
PDF描述
HD66730 Dot-Matrix Liquid Crystal Display Controller/Driver(點(diǎn)陣液晶顯示控制器/驅(qū)動(dòng)器)
HD66731 Dot-Matrix Liquid Crystal Display Controller/Driver(點(diǎn)陣液晶顯示控制器/驅(qū)動(dòng)器)
HD66731A00TB0L 122 x 32 pixel format, Compact LCD size
HD66731A00TA0L Dot-Matrix Liquid Crystal Display Controller/Driver Supporting Japanese Kanji, Korean Font Display
HD66731A01TA0L Dot-Matrix Liquid Crystal Display Controller/Driver Supporting Japanese Kanji, Korean Font Display
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
HD66729 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
HD66730 制造商:HITACHI 制造商全稱:Hitachi Semiconductor 功能描述:Dot-Matrix Liquid Crystal Display Controller/Driver Supporting Japanese Kanji, Korean Font Display
HD66730A00FS 制造商:HITACHI 制造商全稱:Hitachi Semiconductor 功能描述:Dot-Matrix Liquid Crystal Display Controller/Driver Supporting Japanese Kanji, Korean Font Display
HD66730A01FS 制造商:HITACHI 制造商全稱:Hitachi Semiconductor 功能描述:Dot-Matrix Liquid Crystal Display Controller/Driver Supporting Japanese Kanji, Korean Font Display
HD66731 制造商:HITACHI 制造商全稱:Hitachi Semiconductor 功能描述:Dot-Matrix Liquid Crystal Display Controller/Driver Supporting Japanese Kanji, Korean Font Display
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