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參數(shù)資料
| 型號： | HCD66751BP |
| 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(qū)動器，四灰度函數(shù) |
| 文件頁數(shù)： | 53/96頁 |
| 文件大小： | 2068K |
| 代理商： | HCD66751BP |
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HD66750/1
53
C1+
C1-
V
LCD
V
LCD
VR
R
0
R
R
R
-
+
-
+
-
+
-
+
-
+
GND
OPOFF = GND
R
HD66750/1
V1OUT
V2OUT
V3OUT
V4OUT
V5OUT
SEG1 to SEG128
COM1 to COM12
GND
Vci
C2+
C2-
C3+
C3-
C4+
C4-
C5+
C5-
C6+
C6-
VLOUT
0.47
μ
F*
(B characteristics)
Note: Adjust the capacitance value of the capacitor after the LCD panel has been mounted.
The capacitors connected to V1OUT to V5OUT/GNDshould be more the Vlcd voltage.
The voltage of these capacitors should be determined with fluctuation of voltage.
Booster
LCD
driver
V1
V3
V4
V2
V5
GND
Figure 35 External Power Supply Circuit for LCD Drive Voltage Generation
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 36.
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.
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