參數(shù)資料
型號: HD66732
廠商: Hitachi,Ltd.
英文描述: Graphics Liquid Crystal Display Controller/Driver Supporting JIS Level-1 and Level-2 Kanji ROM(圖形LCD控制器/驅(qū)動器)
中文描述: 圖形液晶顯示控制器/驅(qū)動器支持日標級- 1和第2級漢字光盤(圖形液晶顯示控制器/驅(qū)動器)
文件頁數(shù): 126/133頁
文件大?。?/td> 2608K
代理商: HD66732
HD66732
126
14. Applies to the internal oscillator operations using oscillation resistor Rf (figure 68).
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.
Referential data
External resistance
(Rf)
CR oscillation frequency : fosc
Vcc = 3.0 V
130 kHz
85 kHz
73 kHz
60 kHz
48 kHz
40 kHz
Vcc = 2.2 V
117 kHz
73 kHz
67 kHz
56 kHz
45 kHz
37 kHz
Vcc = 4.0 V
138 kHz
93 kHz
78 kHz
62 kHz
50 kHz
42 kHz
Vcc = 5.0 V
143 kHz
98 kHz
81 kHz
63 kHz
51 kHz
43 kHz
120 k
180 k
240 k
300 k
390 k
470 k
Figure 68 Internal Oscillation
15. Booster characteristics test circuits are shown in figure 69.
(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 69 Booster
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