參數(shù)資料
型號(hào)： UPD16681
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(diǎn)陣顯示為JIS 1級(jí)和日標(biāo)平驅(qū)動(dòng)2漢字集
文件頁(yè)數(shù)： 21/56頁(yè)
文件大?。?/td> 906K
代理商： UPD16681
Data Sheet S13104EJ5V0DS00
21
μ
PD16681
7.1 LCD Display and DDRAM Addresses
The character code used in the
μ
PD16681 contains 16 bits (character code + character attribute code). When data
is stored to an address in DDRAM, a combination of full width (11 x 12 dots) and half width (5 x 12 dots) characters
can be displayed on the LCD.
The relation between the DDRAM’s character area and the actual LCD display when displaying a combination of full
width and half width characters is shown below.
Figure 7-1. The Relation between The DDRAM’s Character Area and The Actual LCD Display
LCD display:
"" : Half width(5 x 12 dots) space
DDRAM:
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.
7.2 Character Codes
The
μ
PD16681 is able to combine full width characters (11 x 12 dots) and half width characters (5 x 12 dots) in the
same display. The character data that is stored in DDRAM is displayed starting from the top left corner of the LCD
screen. A one-dot character interval is added to the left of each character font.
Both full width (11 x 12 dots) and half width (5 x 12 dots) characters are handled using 16-bit code lengths and are
stored in DDRAM. The 16-bit code format uses the low-order 13 bits as the character code. The remaining 3 bits are
the high-order 3 bits, which specify the character width (full or half) and the display attribute. The MSB is the select
bit indicating full width or half width character code: “0” specifies full width characters and “1” specifies half width
characters. The character attribute code is assigned to the next two bits, and can specify attributes such as blinking
for individual characters. (See the section
7.3 Display Attributes
.)
7.2.1 Code format
D15
D14
D13
D12
D11
D10
D9
D8
D7
D6
D5
D4
D3
D2
D1
D0
F/H
A1
A0
C12
C11
C10
C9
C8
C7
C6
C5
C4
C3
C2
C1
C0
Full width(11 x 12 dots) character/
Half width(5 x 12 dots) character specification
Display attribute codes
High-order character code
Low-order character code
相關(guān)PDF資料
PDF描述
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(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
UPD16681A 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
UPD16681A-001 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
UPD16681AP-001 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
UPD16681P-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
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
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