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參數資料
| 型號： | LC74787 |
| 元件分類： | 畫面疊加 |
| 英文描述： | ON-SCREEN DISPLAY IC, PDIP24 |
| 封裝： | 0.300 INCH, PLASTIC, SDIP-24 |
| 文件頁數： | 3/23頁 |
| 文件大小： | 215K |
| 代理商： | LC74787 |
No. 5730-11/23
LC74787, 74787M, 74787JM
COMMAND2: Vertical display start position and vertical character size setup command
First byte
DA
Register
Contents
Notes
0 to 7
State
Function
7
—
1
6
—
0
Command 2 identification code.
5
—
1
Sets the vertical display start position and the vertical character size.
4
—
0
3
VS21
0
1
Second line vertical character size
2
VS20
0
1
VS11
0
1
First line vertical character size
0
VS10
0
1
VS20
0
1
VS21
0
1H/dot
2H/dot
1
3H/dot
1H/dot
The vertical display start position is set by the 6 bits
VP0 to VP5.
The weight of bit 1 is 2H.
Second byte
DA
Register
Contents
Notes
0 to 7
State
Function
7
—
0
Second byte identification bit
6
FS
0
Crystal oscillator frequency: 2fsc
1
Crystal oscillator frequency: 4fsc
5
VP5
0
If VS is the vertical display start position then:
(MSB)
1
VS =
α + H × (2Σ 2n VPn)
4
VP4
0
H: the horizontal synchronization pulse period
1
α = 20 H (in 525-line systems)
3
VP3
0
= 25 H (in 625-line systems)
1
2
VP2
0
1
VP1
0
1
0
VP0
0
(LSB)
1
Note: All registers are set to 0 when the LC74787/M/JM is reset by the RST pin.
5
n=0
VS10
0
1
VS11
0
1H/dot
2H/dot
1
3H/dot
1H/dot
Character
display area
相關PDF資料 |
PDF描述 |
|---|---|
| LC74787JM | ON-SCREEN DISPLAY IC, PDSO24 |
| LC74787M | ON-SCREEN DISPLAY IC, PDSO24 |
| LC74787 | ON-SCREEN DISPLAY IC, PDIP24 |
| LC74788 | ON-SCREEN DISPLAY IC, PDIP24 |
| LC74788 | ON-SCREEN DISPLAY IC, PDIP24 |
相關代理商/技術參數 |
參數描述 |
|---|---|
| LC74787JM | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:On-Screen Display Controller |
| LC74787JM-9607-E | 制造商:SANYO Semiconductor Co Ltd 功能描述: |
| LC74787M | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:On-Screen Display Controller |
| LC74788 | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:On-Screen Display Controller |
| LC74788JM | 制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:On-Screen Display Controller |
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