參數(shù)資料
型號(hào): HD66727
廠商: Hitachi,Ltd.
英文描述: 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(qū)動(dòng)器)
中文描述: 低功耗點(diǎn)陣液晶顯示控制器/鍵掃描功能(帶鍵掃描功能的圖形液晶顯示控制器/驅(qū)動(dòng)器驅(qū)動(dòng)程序)
文件頁(yè)數(shù): 94/98頁(yè)
文件大?。?/td> 1576K
代理商: HD66727
HD66727
94
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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