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| 型號： | ML87V3104 |
| 廠商： | OKI ELECTRIC INDUSTRY CO LTD |
| 元件分類： | 顯示控制器 |
| 英文描述： | 2048 X 1024 DOTS DOT MAT LCD DSPL CTLR, PQFP100 |
| 封裝： | PLASTIC, TQFP-100 |
| 文件頁數(shù)： | 7/69頁 |
| 文件大?。?/td> | 474K |
| 代理商： | ML87V3104 |
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FEDL87V3104-02
OKI Semiconductor
ML87V3104
15/69
2.6
Gray level control
In the case of an STN type LCD panel, the FRC (Frame Rate Control) method is used for the multiple gray level
display. By controlling the blinking pattern of the dot, it is possible to express intermediate gray levels in a quasi
manner.
Taking 16 frames as one period, it is possible to express up to 16 gray levels.
The dot blinking pattern is set in the 16-word x 16-bit FRC table. The 4-bit table address corresponds to the gray
levels from 0 to 15. The 16-bit table data expresses the dot blinking patterns corresponding to the different gray
levels, and the dot display is switched for each frame sequentially from the MSB to the LSB, with the operation
being repeated at a period of 16 frames.
In the case of a color STN panel, the FRC pattern is the same for all colors.
Control registers:
FRCTBA [#15h; bit3-0]:
FRC table address
FRCTBD [#17h, #16h]:
FRC table data
Table F2.6 The FRC table (initial value)
FRC table (displayed in the sequence 15, 14, ..., 1, 0)
Table
address
(gradation) 15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
1
0
1
0
2
0
1
0
1
0
3
0
1
0
1
0
1
0
4
0
1
0
1
0
1
0
1
5
0
1
0
1
0
1
0
1
0
1
0
6
0
1
0
1
0
1
0
1
0
1
0
1
7
1
0
1
0
1
0
1
0
1
0
1
0
1
0
8
0
1
0
1
0
1
0
1
0
1
0
1
0
1
9
1
0
1
0
1
0
1
0
1
0
1
0
10
1
0
1
0
1
0
1
0
1
0
1
11
1
0
1
0
1
0
1
0
12
1
0
1
0
1
0
1
13
1
0
1
0
1
14
1
0
1
15
1
Note:
This table shows the initial value set after a reset, and is not one assuming
any specific LCD panel specifications. Set the values in this table to suit
the characteristics of the LCD panel being used.
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