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參數(shù)資料
| 型號： | HD66760 |
| 廠商： | Hitachi,Ltd. |
| 英文描述： | 104 X 80-dot Graphics LCD Controller/Driver for 256 Colors |
| 中文描述： | 104 × 80點(diǎn)圖形LCD控制器/驅(qū)動器的256色 |
| 文件頁數(shù)： | 62/105頁 |
| 文件大小： | 653K |
| 代理商： | HD66760 |
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HD66760
62
Grayscale Palette
The HD66760 incorporates a grayscale palette to simultaneously display 256 of the 4,096 possible colors.
The R and G grayscales consist of eight four-bit palettes, and the B grayscale consists of four four-bit palettes.
The 16-stage grayscale levels can be selected from the four-bit palette data.
For the display data of R and G, the three-bit data in the GRAM written from the microcomputer is used. For
the display data of B, the two-bit data in the GRAM is used.
In this palette, a curtailed frame grayscale system, which has low charging current in the LCD panel, is used.
Although the system is the same for each color, the curtailed frame timing is adjusted between adjacent dots
to reduce flickering.
R
2
R
1
R
0
G
2
G
1
G
0
B
1
B
0
Display data
MSB
LSB
Graphics RAM (GRAM)
RK
02
RK
01
RK
00
RK
12
RK
11
RK
10
RK
22
RK
21
RK
20
RK
32
RK
31
RK
30
RK
42
RK
41
RK
40
RK
52
RK
51
RK
50
RK
62
RK
61
RK
60
RK
72
RK
71
RK
70
"000"
"001"
"010"
"011"
"100"
"101"
"110"
"111"
Palette R
GK
02
GK
01
GK
00
GK
12
GK
11
GK
10
GK
22
GK
21
GK
20
GK
32
GK
31
GK
30
GK
42
GK
41
GK
40
GK
52
GK
51
GK
50
GK
62
GK
61
GK
60
GK
72
GK
71
GK
70
"000"
"001"
"010"
"011"
"100"
"101"
"110"
"111"
Palette G
BK
02
BK
01
BK
00
BK
12
BK
11
BK
10
BK
22
BK
21
BK
20
BK
32
BK
31
BK
30
"00"
"01"
"10"
"11"
Palette B
3
3
2
16-grayscale control
<R>
16-grayscale control
<G>
16-grayscale control
<B>
4
4
4
LCD driver
LCD driver
LCD driver
R
G
B
LCD
RK
03
RK
13
RK
23
RK
33
RK
43
RK
53
RK
63
RK
73
GK
03
GK
13
GK
23
GK
33
GK
43
GK
53
GK
63
GK
73
BK
03
BK
13
BK
23
BK
33
Figure 42 Grayscale Palette Control
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