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參數(shù)資料
| 型號(hào)： | OM6208 |
| 英文描述： | 65 x 96 pixels matrix grey-scale LCD driver |
| 中文描述： | 65 × 96像素矩陣灰度LCD驅(qū)動(dòng)器 |
| 文件頁數(shù)： | 30/68頁 |
| 文件大小： | 296K |
| 代理商： | OM6208 |
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2003 feb 10
30
Philips Semiconductors
Product specification
65 x 96 pixels matrix grey-scale LCD driver
OM6208
handbook, halfpage
MGW832
α
R
VSS = Vrow(min)
V2L
V1L
VC
V1H
G
V2H
VLCD = Vrow(max)
R
R
R
R
F
α
R
α
is in the range 0.0 to 1.05.
Fig.28 Bias system.
Table 13
Bias setting levels for p = 4
Each of the eight possible values of alpha results in a
different set of five values for the column voltages.
Bias level F (see Fig.28) is half of the maximum row
voltage level as shown by the equation
Figure 28 also shows that G is used to define the
maximum column voltage level related to the V
C
level.
Because the voltage level of the row depends on the
programmed bias level, it can be seen that
The situation where F = G occurs only when BS[2:0] is
zero and alpha is zero. In this case
α
R = 0 and G = F;
therefore V
2H
= V
LCD
and V
2L
= V
SS
, also two of the
internal buffers are no longer needed and therefore are
switched off to reduce power consumption.
The relationship between F and G is defined by the
parameter a (indicated in Table 13) and p as follows
It can be seen from Fig.28 that
or
The BS[2:0] bias bits can be selected by a command and
also can be programmed by OTP.
BS2
BS1
BS0
F/G
α
a
0
0
0
0
1
1
1
1
0
0
1
1
0
0
1
1
0
1
0
1
0
1
0
1
1.000
1.075
1.150
1.225
1.300
1.375
1.450
1.525
0.00
0.15
0.30
0.45
0.60
0.75
0.90
1.05
4.00
4.30
4.60
4.90
5.20
5.50
5.80
6.10
F
V
---2
=
F
G
≥
F
G
----
a
p
=
F
G
----
a
p
2
-----------2
)
1
α
2
+
=
=
=
a
α
2
1
+
p
=
α
a
p
1
–
2
=
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