參數(shù)資料
型號(hào)： LC74798
廠商： Sanyo Electric Co.,Ltd.
英文描述： On-Screen Display Controller IC(屏幕顯示控制器芯片)
中文描述： 屏幕顯示控制器IC（屏幕顯示控制器芯片）
文件頁(yè)數(shù)： 10/32頁(yè)
文件大?。?/td> 271K
代理商： LC74798
No. 5833-10/32
LC74798, 74798M
Second byte
Note: All registers are set to 0 when the LC74798/M is reset by the RST pin.
DA
Register
Contents
Notes
0 to 7
State
Function
7
at
0
Character attribute off
1
Character attribute on
6
c6
0
1
5
c5
0
1
4
c4
0
1
3
c3
0
1
2
c2
0
1
1
c1
0
1
0
c0
0
1
Character code (00 to 7F hexadecimal)
Note: All registers are set to 0 when the LC74798/M is reset by the RST pin.
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
5
—
1
4
—
0
3
VS21
0
1
2
VS20
0
1
1
VS11
0
1
0
VS10
0
1
Command 2 identification code.
Sets the vertical display start position and the vertical character size.
Second line vertical character size
First line vertical character size
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
If VS is the vertical display start position then:
5
VS = H
×
2
2
n
VP
n
H: the horizontal synchronization pulse period
5
VP5
0
(MSB)
1
4
VP4
0
1
3
VP3
0
1
2
VP2
0
1
1
VP1
0
1
0
VP0
0
(LSB)
1
The vertical display start position is set by the 6
bits VP0 to VP5.
The weight of bit 1 is 2H.
Character
display area
0
1
0
1H/dot
2H/dot
1
3H/dot
1H/dot
VS21
VS20
0
1
0
1H/dot
2H/dot
1
3H/dot
1H/dot
VS11
VS10
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參數(shù)描述
LC74798M 制造商:SANYO 制造商全稱(chēng):Sanyo Semicon Device 功能描述:On-Screen Display Controller IC
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