參數(shù)資料
型號: LC74751
元件分類: 畫面疊加
英文描述: ON-SCREEN DISPLAY IC, PDIP22
封裝: SDIP-22
文件頁數(shù): 14/15頁
文件大小: 540K
代理商: LC74751
No. 5396-8/15
LC74751
Address 189 (0BD hexadecimal)
DA
Register
Contents
Notes
0 to C
State
Function
0
VP0
0
If VS is the vertical display start position then:
The 6 bits VP5:0 specify the vertical display
(LSB)
1
start position.
1
VP1
0
The weight of the low order bit is 4H.
1
H: the horizontal synchronization pulse period
2
VP2
0
1
3
VP3
0
1
4
VP4
0
1
5
VP5
0
(MSB)
1
6
VSZ10
0
The vertical character size for line 1
1
7
VSZ11
0
1
8
VSZ20
0
The vertical character size for line 2
1
9
VSZ21
0
1
A
VSZ30
0
The vertical character size for lines 3 through 12
1
B
VSZ31
0
1
5
VS = H × (4 Σ 2n VPn)
n = 0
VSZ10
01
VSZ11
01 H/dot
2 H/dot
13 H/dot
4 H/dot
VSZ30
01
VSZ31
01 H/dot
2 H/dot
13 H/dot
4 H/dot
VSZ20
01
VSZ21
01 H/dot
2 H/dot
13 H/dot
4 H/dot
Note: The states of all registers are set to zero when the IC is reset by the RST pin.
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