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參數(shù)資料
| 型號： | SSD1854 |
| 廠商： | Electronic Theatre Controls, Inc. |
| 英文描述： | LCD Segment / Common Driver with Controller CMOS |
| 中文描述： | LCD段/與普通的CMOS驅(qū)動器控制器 |
| 文件頁數(shù)： | 19/48頁 |
| 文件大?。?/td> | 771K |
| 代理商： | SSD1854 |
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SSD1854
Series
Rev 1.0
08/2002
SOLOMON
14
7.10 Level selector
Level Selector is a control of the display synchronization. Display voltage can be separated into
two sets and used with different cycles. Synchronization is important since it selects the
required LCD voltage level to the HV Buffer Cell, which in turn outputs the COM or SEG LCD
waveform.
7.11 HV Buffer Cell (Level Shifter)
HV Buffer Cell works as a level shifter which translated the low voltage output signal to the
required driving voltage. The output is shifted out with an internal FRM clock, which comes
from the Display Timing Generator. The voltage levels are given by the level selector, which is
synchronized with the internal M signal.
For a panel with N rows and M columns, the optimal LCD driving voltage are given as:
N
V
V
V
V
×
=
=
2
4
(
V
V
V
V
V
L
L
L
L
2
4
4
6
=
=
(
×
)
V
th
SS
L
L
L
V
N
N
×
1
4
4
7
)
N
L
L
4
7
4
And
2
4
6
3
4
4
5
L
L
L
L
L
L
V
V
V
V
V
V
=
=
where:
V
th
is the threshold voltage of the LCD panel
V
L7
is the maximum (Row) driving level with reference to V
SS
(The peak-to-peak Row driving voltage is given by V
L7
-V
SS
)
V
L4
is the middle of all driving levels
V
L6
, V
L5
, V
L3
and V
L2
are the other Column driving levels
(The peak-to-peak Column driving voltage is given by V
L6
-V
SS
)
Relationship between the levels:
V
L7
> V
L6
> V
L5
> V
L4
> V
L3
> V
L2
> V
SS
and
V
CC
> V
L4
+ 2V
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| SSD1854U | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:LCD Segment / Common Driver with Controller CMOS |
| SSD1854Z | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:LCD Segment / Common Driver with Controller CMOS |
| SSD1858 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:LCD Segment / Common Driver with Controller CMOS |
| SSD1858Z | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:LCD Segment / Common Driver with Controller CMOS |
| SSD1905 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:LCD Graphics Controller CMOS |
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