參數(shù)資料
型號: HD66727A03TA0L
廠商: Hitachi,Ltd.
英文描述: Low-Power Dot-Matrix Liquid Crystal Display Controller/Driver with Key Scan Function
中文描述: 低功耗點(diǎn)陣液晶顯示控制器/鍵掃描功能驅(qū)動(dòng)程序
文件頁數(shù): 93/97頁
文件大小: 513K
代理商: HD66727A03TA0L
HD66727
93
14.Applies to the internal oscillator operations using oscillation resistor Rf (Figure 54).
OSC1
OSC2
R
f
Since the oscillation frequency varies depending on the OSC1 and OSC2
pin capacitance, the wiring length to these pins should be minimized.
Referential data
200
150
100
50
0
100
200
400
R
f
(k
)
f
OSC
(kHz)
160
160
300
500
600
700
800
V
CC
= 5 V (typ.)
V
CC
= 3 V (typ.)
Figure 54 Internal Oscillation
15.Booster characteristics test circuits are shown in Figure 55.
( Triple boosting )
GND
V
CC
1
μ
F
1
μ
F
+
Vci
C1
C2
V5OUT2
V5OUT3
1
μ
F
( Double boosting )
GND
V
CC
1
μ
F
+
1
μ
F
Vci
C1
C2
V5OUT2
V5OUT3
V
EE
+
+
V
EE
+
Figure 55 Booster
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