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參數(shù)資料
| 型號： | HCD66750BP |
| 廠商： | Hitachi,Ltd. |
| 英文描述： | 128 x 128-dot Graphics LCD Controller/Driver with Four-grayscale Functions |
| 中文描述： | 128 × 128點圖形LCD控制器/驅動器，四灰度函數(shù) |
| 文件頁數(shù)： | 56/96頁 |
| 文件大?。?/td> | 2068K |
| 代理商： | HCD66750BP |
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HD66750/1
56
Vcc
Thermistor
GND
Tr
Vcc
Vci
HD66750/1
1
μ
F
(B charac-eristics)
Thermistor
GND
Tr
Vcc
Vci
HD66750/1
GND
(+)
(Example 1)
(Example 2)
Figure 37 Temperature Compensation Circuits
Switching the Boosting Factor
Instruction bits (BT1/0 bits) can optionally select the boosting 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 factor for the minimum requirements. For details, see the Partial-
display-on Function section.
Because of the maximum boosting factor, external capacitors need to be connected. For example, when the
maximum boosting is six times or five times, capacitors between C6+ and C6D or between C5+ and C5D are
needed as well, as in the case of the seven-times boosting. When the boosting is two-times boosting,
capacitors between C1+ and C1D or between C4+ and C4D are not needed.
Place a capacitor with a voltage of three times or more the Vci-GND voltage between C6+ and C6D and
between C3+ and C3D, and a capacitor with a voltage larger than the Vci-GND voltage between C1+ and
C1D, C2+ and C2D, C4+ and C4D, and C5+ and C5D.
Place a capacitor with a voltage of N times theVci-GND voltage between VLOUT and GND. (N: boosting
factor)
Note that each capacitors with a voltage should be determined with a voltage fluctuation.
Table 19
VLOUT Output Status
BT1
BT0
VLOUT Output Status
0
0
Two-times boosting output
0
1
Five-times boosting output
1
0
Six-times boosting output
1
1
Seven-times boosting output
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