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參數(shù)資料
| 型號： | LC7982A |
| 廠商： | Sanyo Electric Co.,Ltd. |
| 英文描述： | LCD Dot Matrix Graphics Display Controller(LCD點陣圖象顯示控制器) |
| 中文描述： | 液晶點陣圖形顯示控制器（液晶點陣圖象顯示控制器） |
| 文件頁數(shù)： | 12/18頁 |
| 文件大?。?/td> | 264K |
| 代理商： | LC7982A |
Busy flag readout
When the LC7982A is set to readout mode when RS is 1, the state of the busy flag will be output from DB7. The busy
flag will be 1 during the execution of any of the above thirteen instructions, and will be 0 when instruction execution
has completed and the LC7982A can accept the next instruction. When the busy flag is 1, the LC7982A cannot accept
instructions. Therefore, applications must check the busy flag and verify that it is 0 before executing an instruction or
writing data to the LC7982A. However, after a data read instruction or a data write instruction, the microcontroller
may execute the next instruction without checking the busy flag after the maximum value of the read cycle or write
cycle, respectively. The busy flag is not changed by writes to the instruction register when RS is 1. Therefore, it is not
necessary to check the busy flag immediately after writing the instruction register.
It is not necessary to issue any instruction register commands to read out the busy flag.
Relationship between HP, H
N
, VP, CP, and N
X
and the LCD Panel
No. 5946-12/18
LC7982A
Register
R/W
RS
DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0
Busy flag
1
1
1/0
*
H
N
(Character positions)
Symbol
Function
Description
Value
HP
Horizontal character pitch
Character pitch in the horizontal direction
6 to 8 dots
H
N
Horizontal characters
Number of characters per line in the horizontal direction or number of words per line
(in graphics mode)
An even number
in the range 2 to 256
VP
Vertical character pitch
Character pitch in the vertical direction
1 to 16 dots
CP
Cursor position
Number of the line where the cursor will be displayed
1 to 16 lines
N
X
Vertical lines
Display duty
1 to 256 lines
Note: If m is the number of dots in the vertical direction on the screen, and n is the number of dots in the horizontal direction, then the following relationships
will be held:
1/m = 1/N
X
= Display duty
n = HP
×
H
N
m/VP = Number of lines displayed
CP
≤
VP
相關PDF資料 |
PDF描述 |
|---|---|
| LC7985 | LCD Controller/Driver |
| LC7985NA | LCD Controller/Driver |
| LC7985ND | LCD Controller/Driver |
| LC7986 | LCD Controller/Driver |
| LC7986C | LCD Controller/Driver |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| LC7985 | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:LCD Controller/Driver |
| LC7985NA | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:LCD Controller/Driver |
| LC7985ND | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:LCD Controller/Driver |
| LC7985ND-8733-E | 制造商:ON Semiconductor 功能描述:STN-LCD CONTROLLER DRIVER - Trays 制造商:ON Semiconductor 功能描述:FTRAY / STN-LCD CONTROLLER DRIVER |
| LC7986 | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:LCD Controller/Driver |
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