參數(shù)資料
型號(hào)： HD66740WTB0
廠(chǎng)商： Hitachi,Ltd.
英文描述： 112 x 80-dot Graphics LCD Controller/Driver
中文描述： 112 × 80點(diǎn)圖形LCD控制器/驅(qū)動(dòng)器
文件頁(yè)數(shù)： 24/95頁(yè)
文件大小： 856K
代理商： HD66740WTB0
HD66740
24
Display Line Control
NL3-0:
Set NL2–NL0 bits when SW = 0, and the NL3 bit when SW = 1 to specify the display lines.
Display lines change the liquid crystal display drive duty ratio. CGRAM address mapping does not
depend on the number of display lines.
R/W RS DB7
DB0
0
0
DB6 DB5 DB4 DB3 DB2 DB1
0
0
1
1
1
NL1 NL0
CN0 NL3
NL2
CN1
(SW = 0)
(SW = 1)
Figure 8 Display-line Control Instruction
Table 9
NL Bits and Display Lines
NL3
NL2
NL1
NL0
Graphics
Display
LCD Drive
Duty
Common
Driver Used
0
0
0
0
112 x 8 dots
1/8 Duty
COM1–COM8
0
0
0
1
112 x 16 dots
1/16 Duty
COM1–COM16
0
0
1
0
112 x 24 dots
1/24 Duty
COM1–COM24
0
0
1
1
112 x 32 dots
1/32 Duty
COM1–COM32
0
1
0
0
112 x 40 dots
1/40 Duty
COM1–COM40
0
1
0
1
112 x 48 dots
1/48 Duty
COM1–COM48
0
1
1
0
112 x 56 dots
1/56 Duty
COM1–COM56
0
1
1
1
112 x 64 dots
1/64 Duty
COM1–COM64
1
0
0
0
112 x 72 dots
1/72 Duty
COM1–COM72
1
0
0
1
112 x 80 dots
1/80 Duty
COM1–COM80
CN1–CN0:
Set CN1–CN0 bits when SW = 1. When CN1–0 = 01, the display position is shifted by 16
dots below and display starts from COM17. When the liquid crystal is driven at low duty in the system
wait state, it can display partially at the center of the screen. For details, see the Partial-display-on
Function section.
When CN1–CN0 = 10, the display position is shifted by 8 dots above and second-line display starts from
COM1. The 8 dots of the first line are moved to the lowest edge of the display screen. The output
position of the lowest edge depends on the drive duty setting. In vertical smooth scrolling, PS1–PS0
bits can selectively fixed-display only the first to the third lines. Combining these functions enables the
fixed display of one line of the lowest edge. For details, see the Partial Smooth Scroll Display Function
section.
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HD66751S 制造商:未知廠(chǎng)家 制造商全稱(chēng):未知廠(chǎng)家 功能描述:
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