參數(shù)資料
型號(hào)： HCD44780UA00
廠商： Hitachi,Ltd.
英文描述： 320 x 240 pixel format, CFL backlight available with power harness
中文描述： 點(diǎn)陣式液晶顯示控制器/驅(qū)動(dòng)器
文件頁(yè)數(shù)： 15/59頁(yè)
文件大小： 316K
代理商： HCD44780UA00
HD44780U
15
Programming character patterns
This section explains the correspondence between addresses and data used to program character patterns
in EPROM. The HD44780U character generator ROM can generate 208 5
×
8 dot character patterns and
32 5
×
10 dot character patterns for a total of 240 different character patterns.
Character patterns
EPROM address data and character pattern data correspond with each other to form a 5
×
8 or 5
×
10 dot character pattern (Tables 2 and 3).
Table 2
Example of Correspondence between EPROM Address Data and Character Pattern
(5
×
8 Dots)
Data
O4 O3 O2 O1 O0
0 0 0 1
0 0 1 0
0 0 1 1
0 1 0 0
0 1 1 0 0 0 1 0
EPROM Address
Character code
Line
position
LSB
0 1 0 1
0 1 1 0
0 1 1 1
1 0 0 0
0 0 0 0
1 0 0 1
1 0 1 0
1 0 1 1
1 1 0 0
1 1 0 1
1 1 1 0
1 1 1 1
1 1 0 0 1
1 0 0 0 1
1 0 0 0 1
1 1 1 1 0
0 0 0 0 0
1 0 0 0 0
1 0 0 0 0
1 0 1 1 0
Cursor position
0 0 0 0 0
0 0 0 0 0
0 0 0 0 0
0 0 0 0 0
0 0 0 0 0
0 0 0 0 0
0 0 0 0 0
0 0 0 0 0
A10 A9 A8 A7 A6 A5 A4 A3 A2 A1 A0
A11
Notes: 1. EPROM addresses A11 to A4 correspond to a character code.
2. EPROM addresses A3 to A0 specify a line position of the character pattern.
3. EPROM data O4 to O0 correspond to character pattern data.
4. EPROM data O5 to O7 must be specified as 0.
5. A lit display position (black) corresponds to a 1.
6. Line 9 and the following lines must be blanked with 0s for a 5
×
8 dot character fonts.
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