參數(shù)資料
型號: HD66725
廠商: Hitachi,Ltd.
英文描述: Graphics LCD Controller/Driver with Key Scan Function(帶鍵掃描功能的圖形LCD控制器/驅動器)
中文描述: 圖形液晶顯示控制器/鍵掃描功能(帶鍵掃描功能的圖形液晶顯示控制器/驅動器驅動程序)
文件頁數(shù): 70/117頁
文件大?。?/td> 834K
代理商: HD66725
HD66724/HD66725
70
Notes: 1. The reference voltage input (Vci) must be adjusted so that the output voltage after boosting will not exceed
the absolute maximum rating for the liquid-crystal power supply voltage (7 V). Particularly, Vci must be
2.3 V or less for triple boosting.
2. Vci is both a reference voltage and power supply for the booster; connect it to Vcc directly or combine it with
a transistor so that sufficient current can be obtained.
3. Vci must be smaller than Vcc.
4. When using up to the double booster, no capacitors are required between C2+ and C2–.
5. Polarized capacitors must be connected correctly.
6. Circuits for temperature compensation should be based on the sample circuit below.
V
LCD
V
LCD
VR
R
0
R
R
R
-
+
-
+
-
+
-
+
-
+
GND
C1+
C1-
Vci
+
0.47
μ
F
to 1
μ
F
0.47
μ
F
to 1
μ
F
0.47
μ
F
to 1
μ
F
VLOUT
GND
+
C2+
C2-
+
Booster
OPOFF=GND
R
HD66724/5
V1OUT
+
V2OUT
V3OUT
V4OUT
V5OUT
+
+
+
+
LCD
driver
SEG1 to SEG72 (96)
COM1 to COM24
COMS1 to COMS2
V1
V3
V4
V2
V5
GND
0.1
μ
F
to 0.5
μ
F
GND
Vci
Figure 37 Internal Booster Circuit for LCD Drive Voltage Generation
Vcc
Thermistor
GND
Tr
Vcc
Vci
HD66724/5
Figure 38 External Power Supply Circuit for LCD Drive Voltage Generation
相關PDF資料
PDF描述
HD66726 Graphics LCD Controller/Driver with Key Scan Function(帶鍵掃描功能的圖形LCD控制器/驅動器)
HD66727 Low-Power Dot-Matrix Liquid Crystal Display Controller/Driver with Key Scan Function(帶鍵掃描功能的圖形LCD控制器/驅動器)
HD66728 112 x 80-dot Graphics LCD Controller/Driver(112 x 80點圖形LCD控制器)
HD66730 Dot-Matrix Liquid Crystal Display Controller/Driver(點陣液晶顯示控制器/驅動器)
HD66731 Dot-Matrix Liquid Crystal Display Controller/Driver(點陣液晶顯示控制器/驅動器)
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