PCF88331 Philips Semiconductors, PCF88331 Datasheet - Page 28
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PCF88331
Manufacturer Part Number
PCF88331
Description
STN RGB - 132 X 132 X 3 driver
Manufacturer
Philips Semiconductors
Datasheet
1.PCF88331.pdf
(112 pages)
- Current page: 28 of 112
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Philips Semiconductors
6.2.22
With the Colour set (RGBSET) command the mapping from the 256-colour interface data is translated to the 4 kbyte
colour RAM data of the PCF8833 can be changed. The translation table must be changed, if necessary, before sending
256 colour data. For the red and green pixel 8 from the available 16 grey scales can be selected. For the blue pixel 4
from the 16 grey scales can be selected. The default or reset state of the colour mapping can be found in Table 32.
If the 256-to-4 kbyte colour mapping needs to be changed, the whole table must be sent. The mapping of colours is done
when writing data into the RAM, through the application of the Look-Up Table (LUT).
Table 32 Colour set register bits
6.2.23
The Partial area command (PTLAR) sets the partial display area and displays the RAM content of this area. In the partial
Display mode the drive voltage can be reduced.
Table 33 Partial area register bits
2003 Feb 14
STN RGB - 132
D/C
0
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
D/C
0
1
1
C
P
ARTIAL AREA
OLOUR SET
D7
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
0
AA1S
AA1E
7
0
7
7
D6
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
0
AA1S
AA1E
6
0
132
D5
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
1
6
6
AA1S
AA1E
D4
3 driver
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
X
0
5
1
5
5
G3
G3
G3
G3
G3
G3
G3
G3
D3
R3
R3
R3
R3
R3
R3
R3
R3
B3
B3
B3
B3
1
AA1S
AA1E
4
1
4
4
G2
G2
G2
G2
G2
G2
G2
G2
D2
R2
R2
R2
R2
R2
R2
R2
R2
B2
B2
B2
B2
1
28
AA1S
AA1E
3
0
G1
G1
G1
G1
G1
G1
G1
G1
D1
R1
R1
R1
R1
R1
R1
R1
R1
B1
B1
B1
B1
0
3
3
AA1S
AA1E
D0
R0
R0
R0
R0
R0
R0
R0
R0
G0
G0
G0
G0
G0
G0
G0
G0
B0
B0
B0
B0
1
2
0
2
2
DEFAULT
AA1S
AA1E
2DH
0BH
0DH
0BH
0DH
0BH
00H
02H
04H
06H
09H
0FH
00H
02H
04H
06H
09H
0FH
00H
04H
0FH
1
0
1
1
Objective specification
AA1S
AA1E
0
0
red tone 000
red tone 001
red tone 010
red tone 011
red tone 100
red tone 101
red tone 110
red tone 111
green tone 000
green tone 001
green tone 010
green tone 011
green tone 100
green tone 101
green tone 110
green tone 111
blue tone 00
blue tone 01
blue tone 10
blue tone 11
DESCRIPTION
PCF8833
0
0
DEFAULT
30H
tbf
tbf
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