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參數(shù)資料
| 型號： | PCF8833 |
| 廠商： | NXP Semiconductors N.V. |
| 英文描述： | STN RGB - 132 X 132 X 3 driver |
| 中文描述： | 超扭曲的RGB - 132 × 132 × 3驅(qū)動程序 |
| 文件頁數(shù)： | 57/112頁 |
| 文件大?。?/td> | 469K |
| 代理商： | PCF8833 |
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2003 Feb 14
57
Philips Semiconductors
Objective specification
STN RGB - 132
×
132
×
3 driver
PCF8833
When the required bias system (a) is defined, the LCD
supply voltage for a display size N can be determined; see
equation (4).
(4)
The parameter P in equation (4) is the number of
simultaneous selected rows. For the maximum number of
rows of 132, P = 4 is chosen. When partial Display mode
is selected the P value is set to 1 internally.
The bias voltages needed in a MRA LCD driver depends
on the number of simultaneous selected rows (P). The
bias voltages of the PCF8833 are given for P = 4 and
P = 1; see Fig.32. In the PCF8833 the maximum column
voltage (GMAX) is always lower or equal to the row
voltage F.
V
LCD
2a
V
ON
×
N
+
P a
2a
+
)
----------------N
×
=
handbook, full pagewidth
MGU941
VLCD2
V2H
V1H
VC
V1L
V2L
VSS
P = 4
F
F
VC
Gmax
Gmax
VLCD2
V2H
VC
V2L
VSS
P = 1
F
F
VC
Gmax
Gmax
Fig.32 Bias levels for a MRA system with P = 4 and P = 1.
The bias voltage levels are a function of the row voltage
F and a:
(5)
(6)
(7)
(8)
Depending on the value of p, the bias levels are set in the
ratio of:
p = 1:
α
R
2R
2R
α
R
p = 4:
α
R
R
R
R
R
α
R
Where the value of
α
is in the range from 0 to 4.
The value of F is determined by (
α
+ 2)
×
R and the value
of G
max
is determined by 2
×
R.
The relationship between the ratio F/G
max
and
α:
G
max
R
×
(9)
or:
(10)
The relation between a and
α
for a given p is the following:
α
2
(11)
This leads to the following bias systems given in Table 70.
F
V
2
------------
=
F
G
max
≥
F
G
----------------------
a
×
p
=
G
max
----F
a
p
=
----F
a
p
2
+
------2
)
R
×
------2
)
1
α
2
+
=
=
=
=
α
max
G
1
–
2
×
=
a
1
+
p
×
=
α
a
p
1
–
2
×
=
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| PCF88331 | STN RGB - 132 X 132 X 3 driver |
| PCF88332DA | STN RGB - 132 X 132 X 3 driver |
| PCF8833U | STN RGB - 132 X 132 X 3 driver |
| PCF8881 | 132 x 132 RGB single chip TFT driver with DC-to-DC converter |
| PCI-ADC | MULTIFUNKTIONSKARTE 44 KANAL PCI BUS |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| PCF88331 | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:STN RGB - 132 X 132 X 3 driver |
| PCF88332DA | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:STN RGB - 132 X 132 X 3 driver |
| PCF8833U | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:STN RGB - 132 X 132 X 3 driver |
| PCF8833U/2DA | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:STN RGB - 132 X 132 X 3 driver |
| PCF8881 | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:132 x 132 RGB single chip TFT driver with DC-to-DC converter |
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