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參數(shù)資料
| 型號： | HD66740WTB0 |
| 廠商： | Hitachi,Ltd. |
| 英文描述： | 112 x 80-dot Graphics LCD Controller/Driver |
| 中文描述： | 112 × 80點圖形LCD控制器/驅(qū)動器 |
| 文件頁數(shù)： | 50/95頁 |
| 文件大?。?/td> | 856K |
| 代理商： | HD66740WTB0 |
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HD66740
50
Switching the Boosting Multiplying Factor
Instruction bits (BT1/0 bits) can optionally select the boosting multiplying factor of the internal booster.
According to the display status, power consumption can be reduced by changing the LCD drive duty and
the LCD drive bias, and by controlling the boosting multiplying factor for the minimum requirements.
For details, see the Partial-display-on Function section.
Due to the maximum boosting multiplying factor, the following external capacitor needs to be connected.
For example, when the maximum boosting is quadrupled, the capacitors between C4+ and C4– for five-
times boosting are not needed, so these pins must be open.
Table 18
VLOUT Output Status
BT1
BT0
VLOUT Output Status
0
0
Triple boosting output
0
1
Quadruple boosting output
1
0
Five-times boosting output
1
1
Setting inhibited
C1+
C1-
Vci
+
1
μ
F
0.47
μ
F
to 1
μ
F
VLOUT
GND
+
C2+
C2-
+
0.47
μ
F
to 1
μ
F
Vci
C3+
C3-
+
0.47
μ
F
to 1
μ
F
i) Maximum five-times boosting
ii) Maximum quadruple boosting
iii) Maximum triple boosting
C4+
C4-
+
0.47
μ
F
to 1
μ
F
C1+
C1-
Vci
+
VLOUT
GND
+
C2+
C2-
+
Vci
C3+
C3-
+
C4+
C4-
C1+
C1-
Vci
+
VLOUT
GND
+
C2+
C2-
+
Vci
C3+
C3-
C4+
C4-
0.47
μ
F
to 1
μ
F
0.47
μ
F
to 1
μ
F
0.47
μ
F
to 1
μ
F
0.47
μ
F
to 1
μ
F
0.47
μ
F
to 1
μ
F
1
μ
F
1
μ
F
Figure 25 Booster Output Multiplying Factor Switching
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相關代理商/技術參數(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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