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參數資料
| 型號： | UPD16681P-011 |
| 廠商： | NEC Corp. |
| 英文描述： | LCD CONTROLLER/DRIVER FOR DOT MATRIX DISPLAY OF JIS LEVEL 1 AND JIS LEVEL 2 KANJI SETS |
| 中文描述： | LCD控制器/的點陣顯示為JIS 1級和日標平驅動2漢字集 |
| 文件頁數： | 31/56頁 |
| 文件大?。?/td> | 906K |
| 代理商： | UPD16681P-011 |
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Data Sheet S13104EJ5V0DS00
31
μ
PD16681
8.4 Scrolling
Character scrolling is controlled by inputting scroll control commands (8 bits) plus scroll dot count data (8 bits). The
line to be scrolled is specified by the scroll control command and the scroll dot count data sets the number of dots to
be scrolled. When this command is input, the characters on the specified line are shifted leftward by the specified
number of dots.
The number of dots that can be scrolled differs according to the contents of the data stored in DDRAM (see
8.4.1
Scrollable number of dots
and
8.4.2 Display and scroll amounts
). Consequently, if scrolling is specified for an
amount of data that exceeds the scrollable data, the character data, only the scrollable data is shifted and
overwritten, and scrolling must be performed again.
Cautions 1. For character scrolling, be sure to input a scroll control command (8 bits) plus the amount of
scrolled data (8 bits).
2. If the characters on a scrolled line have various character attributes (normal/blink/reverse/
reverse/blink), the character display may become garbled after scrolling. This problem does not
occur when all of the characters on the line have the same character attribute.
8.4.1 Scrollable number of dots
Scroll amount = (12 dots x number of non-displayed full width characters that are stored in DDRAM)
+ (6 dots x number of non-displayed half width characters that are stored in DDRAM)
8.4.2 Display and scroll amounts
LCD display:
DDRAM status :
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
1st line
00H
01H
02H
03H
04H
05H
06H
07H
08H
09H
0AH 0BH 0CH 0DH 0EH
0FH
10H
11H
2nd line
12H
13H
14H
15H
16H
17H
18H
19H
1AH 1BH 1CH 1DH 1EH
1FH
20H
21H
22H
23H
3rd line
24H
25H
26H
27H
28H
29H
2AH 2BH 2CH 2DH 2EH
2FH
30H
31H
32H
33H
34H
35H
4th line
36H
37H
38H
39H
3AH 3BH 3CH 3DH 3EH
3FH
40H
41H
42H
43H
44H
45H
46H
47H
Remark
Shaded areas indicate addresses.
Address characters that are not displayed are used as data for character scrolling.
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| UPD16681 | LCD CONTROLLER/DRIVER FOR DOT MATRIX DISPLAY OF JIS LEVEL 1 AND JIS LEVEL 2 KANJI SETS |
| UPD16681W-011 | LCD CONTROLLER/DRIVER FOR DOT MATRIX DISPLAY OF JIS LEVEL 1 AND JIS LEVEL 2 KANJI SETS |
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相關代理商/技術參數 |
參數描述 |
|---|---|
| UPD16681W-011 | 制造商:NEC 制造商全稱:NEC 功能描述:LCD CONTROLLER/DRIVER FOR DOT MATRIX DISPLAY OF JIS LEVEL 1 AND JIS LEVEL 2 KANJI SETS |
| UPD16682 | 制造商:NEC 制造商全稱:NEC 功能描述:1/65 DUTY LCD CONTROLLER/DRIVER WITH ON-CHIP RAM |
| UPD16682A | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:UPD16682A Data Sheet | Data Sheet[02/2001] |
| UPD16682AP | 制造商:NEC 制造商全稱:NEC 功能描述:1/65 DUTY LCD CONTROLLER/DRIVER WITH ON-CHIP RAM |
| UPD16682AW | 制造商:NEC 制造商全稱:NEC 功能描述:1/65 DUTY LCD CONTROLLER/DRIVER WITH ON-CHIP RAM |
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