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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(diǎn)圖形LCD控制器/驅(qū)動器，四灰度函數(shù) |
| 文件頁數(shù)： | 55/96頁 |
| 文件大?。?/td> | 2068K |
| 代理商： | HCD66750BP |
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HD66750/1
55
V
LCD
VR
R
0
R
R
R
-
+
-
-
+
-
+
-
+
GND
C1+
C1-
Vci
VLOUT
GND
C2+
C2-
(+)
Booster
OPOFF = GND
R
HD66750/1
V1OUT
V2OUT
V3OUT
V4OUT
V5OUT
LCD
driver
SEG1 to SEG128
COM1 to COM128
V1
V3
V4
V2
V5
GND
0.47
μ
F*
(B characteristics)
GND
Vci
C3+
C3-
C4+
C4-
1
μ
F
(B Charac-
teristics)
Notes:1. The reference voltage input (Vci) must be adjusted so that the outp ut voltage after boosting will not exc
the absolute maximum rating for the liquid-crystal power supply voltage (16.5 V).
2. Vci is both a reference voltage and p ower supp ly for the boost er; connect it to Vcc directly or comb ine it
with a transistor so that sufficient current can b e obt ained.
3. Polarized capacitors must be connected correctly.
4. Circuts for temp erature comp ensation should b e based on the sample circuits in figure 37.
5. Adjust the capacitance value of the stabilized capacitor after the LCD panel has been mounted.
6. The capacitors connected to C3+/C3D and C6+/C6D should three times or more the Vci voltage.
7. The capacitors connected to C1+/C1D, C2+/C2D, C4+/C4D and C5+/C5D should b e more the V ci volta
8. The capacitors connected to VLOUT/GNDand V 1OUT to V5OUT/GND should be more the N times Vci
voltage. (N: boosting factor)
9. The voltage of these capacitors should be determined with fluctuation of voltage.
C5+
C5-
C6+
C6-
(+)
1
μ
F
(B Charac-
terstics)
(+)
1
μ
F
(B Charac-
terstics)
(+)
1
μ
F
(B Charac-
teristics)
(+)
1
μ
F
(B Charac-
teristics)
(+)
1
μ
F
(B Charac-
teristics)
(+)
1
μ
F
(B Charac-
terstics)
Figure 36 Internal Booster for LCD Drive Voltage Generation
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