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參數(shù)資料
| 型號(hào)： | 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(dòng)器的256色 |
| 文件頁(yè)數(shù)： | 52/105頁(yè) |
| 文件大?。?/td> | 653K |
| 代理商： | HD66760 |
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HD66760
52
Write-data Mask Function
The HD66760 has a bit-wise write-data mask function that controls writing the two-byte data from the
microcomputer to the GRAM. Bits that are 0 in the write-data mask register (WM15-0) cause the
corresponding DB bit to be written to the GRAM. Bits that are 1 prevent writing to the corresponding GRAM
bit to the GRAM; the data in the GRAM is retained. This function can be used when only one-pixel data is
rewritten or the particular display color is selectively rewritten.
DB15
DB8
DB7
DB0
Upper byte
Lower byte
Write-data mask
WM15
WM8 WM7
WM0
i) SWP = "0":
DB15
R
02
R
01
R
00
G
02
G
01
G
00
B
02
B
01
DB8
DB7
DB0
Upper byte
Lower byte
ii) SWP = "1":
DB15
R
02
R
01
R
00
G
02
G
01
G
00
B
02
B
01
DB8
R
12
R
11
R
10
G
12
G
11
G
10
B
12
B
11
DB7
DB0
Upper byte
Lower byte
0
0
0
1
1
1
0
0
i) GRAM data
(SWP = "0"):
DB15
*
*
*
*
*
*
*
*
DB8
R
12
R
11
R
10
*
*
*
B
12
B
11
DB7
DB0
Upper byte
Lower byte
ii) GRAM data
(SWP = "1"):
DB15
R
02
R
01
R
00
*
*
*
B
02
B
01
DB8
*
*
*
*
*
*
*
*
DB7
DB0
Upper byte
Lower byte
Data written by
the microcomputer
R
02
R
01
R
00
G
02
G
01
G
00
B
02
B
01
R
12
R
11
R
10
G
12
G
11
G
10
B
12
B
11
R
12
R
11
R
10
G
12
G
11
G
10
B
12
B
11
1
1
1
1
1
1
1
1
Figure 33 Example of Write-data Mask Function Operation
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