參數(shù)資料
型號(hào): HD667A66R
廠商: Hitachi,Ltd.
英文描述: 132 x 176-dot Graphics LCD Controller/Driver for 65K Colors
中文描述: 132 × 176點(diǎn)圖形LCD控制器/驅(qū)動(dòng)器的65K色
文件頁(yè)數(shù): 23/97頁(yè)
文件大小: 681K
代理商: HD667A66R
HD66766R Rev. 1.0-1 / September 2002
23
Table 12 Display bias setting table
Determine the LCD drive bias according to its display duty, and select combination of boosting ratio of
the step-up circuit 2 and bias amplifier ratio so as not to exceed voltage control of Vci2 and VCH. See
the LCD Voltage Generation Circuit regarding how to determine the LCD drive bias, VCH voltage and
contrast adjustment for the following settings.
LCD
driving
bias
Booster ratio of
the step-up
circuit 2 (ND2)
x 2
x 3
x 4
x 2
x 3
x 4
x 2
x 3
x 4
x 2
x 3
x 4
x 2
x 3
x 4
x 2
x 3
x 4
x 2
x 3
x 4
x 3
x 4
x 5
x 3
x 4
x 5
BS3
BS2
BS1
BS0
Bias
ratio
(NB)
0.75
N/A
N/A
1.25
0.825
N/A
1.75
1.165
N/A
N/A
1.50
1.125
N/A
1.675
1.25
N/A
1.825
1.375
N/A
2.00
1.50
N/A
1.625
1.3
N/A
1.75
1.4
Vci2
(Vci2
VOU
T-0.5V)
1.50 x VM
-
-
2.50 x VM
1.75 x VM
-
3.50 x VM
2.33 x VM
-
-
3.00 x VM
2.25 x VM
-
3.35 x VM
2.50 x VM
-
3.65 x VM
2.75 x VM
-
4.00 x VM
3.00 x VM
-
3.25 x VM
2.60 x VM
-
3.45 x VM
2.80 x VM
VCH
(VCH
22V)
0
-
-
0
0
-
1
0
-
-
1
0
-
1
0
-
1
0
-
1
1
-
1
0
-
1
0
0
-
-
1
0
-
0
0
-
-
0
0
-
0
1
-
1
1
-
1
0
-
0
1
-
0
1
0
-
-
0
0
-
1
1
-
-
0
1
-
1
0
-
0
1
-
0
0
-
0
0
-
1
1
0
-
-
0
1
-
1
1
-
-
0
0
-
0
0
-
0
0
-
1
0
-
1
1
-
1
1
Vci2 x 2
-
-
Vci2 x 2
Vci2 x 3
-
Vci2 x 2
Vci2 x 3
-
-
Vci2 x 3
Vci2 x 4
-
Vci2 x 3
Vci2 x 4
-
Vci2 x 3
Vci2 x 4
-
Vci2 x 3
Vci2 x 4
-
Vci2 x 4
Vci2 x 5
-
Vci2 x 4
Vci2 x 5
1/2
1/4
1/6
1/8
1/9
1/10
1/11
1/12
1/13
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