參數(shù)資料
型號(hào): S-4544A
廠商: Seiko Instruments Inc.
英文描述: LCD Controller-Driver With Built-in 8-Bit and Serial Interfaces(內(nèi)置8位和串行接口的LCD控制器-驅(qū)動(dòng)器)
中文描述: LCD控制器與- 8內(nèi)置驅(qū)動(dòng)器位和串行接口(內(nèi)置8位和串行接口的液晶顯示控制器-驅(qū)動(dòng)器)
文件頁(yè)數(shù): 20/39頁(yè)
文件大?。?/td> 237K
代理商: S-4544A
LCD Controller-Driver
S-4544A
Seiko Instruments Inc.
19
EXAMPLES OF EXTERNAL BIAS RESISTOR CONNECTION VS LCD DRIVE WAVEFORM
R
a1
V
DD
V
1
V
2
V
3
V
4
V
5
SEG Waveform
M
M
1. 1/4 Bias or more
COM Waveform
M
M
R
a1
R
a2
R
a1
R
a1
R
b
V
DD
V
1
V
2
=V
3
V
4
V
5
SEG Waveform
M
M
2. 1/4 Bias
COM
M
M
R
b
R
b
R
b
R
c1
V
DD
V
1
V
3
V
2
V
4
V
5
SEG Waveform
M
M
3. 1/3 to 1/4 Bias
COM Waveform
M
M
R
c2
R
c3
R
c2
R
c1
R
d
V
DD
V
1
=V
3
V
2
=V
4
V
5
SEG Waveform
M
M
4. 1/3 Bias
COM Waveform
M
M
R
d
R
d
R
e1
V
DD
V
3
V
1
V
4
V
2
V
5
SEG Waveform
M
M
5. 1/2 to 1/3 Bias
COM
M
M
R
e2
R
e3
R
e2
R
e1
R
d
V
DD
=V
3
V
1
=V
4
V
2
=V
5
SEG Waveform
M
M
6. 1/2 Bias
COM
M
M
R
d
Figure 8 Examples of External Bias Resistors vs LCD Drive Waveform
R
a2
=
α
R
a1
0
α
Bias
=
R
a1
+R
a1
+R
a2
+R
a1
+R
a1
1
R
a1
=
4 +
α
R
c2
+R
c3
=R
c1
R
c2
=
β
R
c1
0
β
1
Bias
=R
c1
+R
c2
+R
c3
+R
c2
+R
c1
1
R
c1
=
3 +
β
R
e3
=
γ
(R
e1
+R
e2
)
R
e1
=R
e3
0
≤γ≤
1
Bias
=R
e1
+R
e2
+R
e3
+R
e2
+R
e1
1
R
e1
+R
e2
=
2 +
γ
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