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参数资料
| 型号： | LC74794M |
| 元件分类： | 画面叠加 |
| 英文描述： | ON-SCREEN DISPLAY IC, PDSO30 |
| 封装： | MFP30S |
| 文件页数： | 4/30页 |
| 文件大小： | 320K |
| 代理商： | LC74794M |
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No. 5557-12/30
LC74794, 74794M
COMMAND4 (Display control setup command)
First byte
DA
Register
Contents
Notes
0 to 7
State
Function
7—
1
6—
1
5—
0
4—
0
3
TSTMOD
0
Normal operating mode
This bit must be set to 0.
1
Test mode
2
RAMERS
0
1
Erase display RAM. (Set the RAM data to 7F hexadecimal.)
1
OSCSTP
0
Do not stop the crystal and LC oscillators.
1
Stop the crystal and LC oscillators.
0
SYSRST
0
1
Reset all registers and turn display off.
Command 4 identification code
Display control setup
Second byte
Note: All registers are set to 0 when the LC74794/M is reset by the RST pin.
DA
Register
Contents
Notes
0 to 7
State
Function
7—
0
Second byte identification bit
6
BLK2
0
Character display area
Specifies the size for complete fill-in
1
Video display area
5
BLK1
0
1
Changes the blanking size
4
BLK0
0
1
3
BK1
0
Blinking period: About 0.5 s
Switches the blinking period
1
Blinking period: About 1.0 s
2
BK0
0
Blinking off
1
Blinking on
1RV
0
Reverse video off
1
Reverse video on
0
DSPON
0
Character display off
1
Character display on
Blinking in reverse video mode switches the
display between normal character display and
reverse video display.
Erasing RAM takes about 500 s. (This operation
must be executed in the DSPOFF state.)
Valid in external synchronization mode when
character display is off.
The registers are reset when the CS1 pin is low,
and the reset state is cleared when CS1 is set high.
BLK0
01
BLK1
0
Blanking off
Character size
1
Border size
Complete fill in
相关PDF资料 |
PDF描述 |
|---|---|
| LC74794 | ON-SCREEN DISPLAY IC, PDIP30 |
| LC74795M | ON-SCREEN DISPLAY IC, PDSO30 |
| LC74795 | ON-SCREEN DISPLAY IC, PDIP30 |
| LC74799 | ON-SCREEN DISPLAY IC, PDIP30 |
| LC74799M | ON-SCREEN DISPLAY IC, PDSO30 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| LC74795 | 制造商:SANYO 制造商全称:Sanyo Semicon Device 功能描述:On-Screen Display Controller LSI |
| LC74795M | 制造商:SANYO 制造商全称:Sanyo Semicon Device 功能描述:On-Screen Display Controller LSI |
| LC74798 | 制造商:SANYO 制造商全称:Sanyo Semicon Device 功能描述:On-Screen Display Controller IC |
| LC74798M | 制造商:SANYO 制造商全称:Sanyo Semicon Device 功能描述:On-Screen Display Controller IC |
| LC74799 | 制造商:SANYO 制造商全称:Sanyo Semicon Device 功能描述:On-Screen Display Controller IC |
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