參數(shù)資料
型號: HD66726
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(qū)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(qū)動器驅(qū)動程序)
文件頁數(shù): 111/117頁
文件大?。?/td> 1549K
代理商: HD66726
HD66726
111
14. Applies to the internal oscillator operations using oscillation resistor Rf (figure 63).
OSC1
OSC2
Rf
Since the oscillation frequency varies depending on the OSC1 and OSC2 pin
capacitance, the wiring length to these pins should be minimized.
External resistance
(Rf)
CR oscillation frequency : fosc
Vcc = 2.2 V
84 kHz
67 kHz
56 kHz
52 kHz
45 kHz
37 kHz
Vcc = 1.8 V
73 kHz
67 kHz
50 kHz
46 kHz
40 kHz
34 kHz
Vcc = 3.0 V
92 kHz
73 kHz
60 kHz
56 kHz
48 kHz
40 kHz
Vcc = 5.0 V
98 kHz
81 kHz
63 kHz
59 kHz
51 kHz
43 kHz
Vcc = 4.0 V
96 kHz
78 kHz
62 kHz
58 kHz
50 kHz
42 kHz
180 k
240 k
300 k
330 k
390 k
470 k
Figure 63 Internal Oscillation
15. Booster characteristics test circuits are shown in figure 64.
(Triple boosting)
(Double boosting)
GND
Vcc
1
μ
F
Vci
C1+
C1-
VLOUT
+
VLCD
C2+
C2-
1
μ
F
+
GND
Vcc
1
μ
F
Vci
C1+
C1-
VLOUT
+
VLCD
C2+
C2-
1
μ
F
+
1
μ
F
+
(Quadruple boosting)
GND
Vcc
1
μ
F
Vci
C1+
C1-
VLOUT
+
VLCD
C2+
C2-
1
μ
F
+
1
μ
F
+
C3+
C3-
C3+
C3-
C3+
C3-
1
μ
F
+
Figure 64 Booster
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