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參數資料
型號: LC74735NW
元件分類: 畫面疊加
英文描述: ON-SCREEN DISPLAY IC, PQFP80
封裝: SQFP-80
文件頁數: 9/52頁
文件大小: 300K
代理商: LC74735NW
No. 7545-17/52
LC74735NW
Command 20 (System control setting command)
First byte
Second byte
DA0 to 7
Register
Content
Notes
State
Function
7
1
6
0
Command 2 identification code
5
1
System control settings
4
0
3
0
2
0
Sub-identification code 0
1
0
DA0 to 7
Register
Content
Notes
State
Function
7
TSTMD2
0
Normal operation
1
Test mode 2
6
TSTMD1
0
Normal operation
1
Test mode 1
5
Q/W2
0
Normal mode
1
Independent mode
Specified by COM24.
4
Q/W1
0
QVGA mode
D/A converter on, 40 characters
× 13 lines
1
WVGA mode
D/A converter off, 33 characters
× 15 lines
3
SYSRST
0
1
Reset all registers (All bits set to 0.)
2
CTERS
0
1
Erase the color table. (Sets all values to 00.)
0
1
SRMERS
1
Erase main RAM. (Sets all values to 00.)
Wallpaper
0
MRMERS
1
Erase sub-RAM. (Sets all values to 00.)
Main screen
Do not use test mode. This bit must always be set
to 0.
Do not use test mode. This bit must always be set
to 0.
Normal / Independent
QVGA / WVGA
The registers are reset when the CS pin is low.
The reset state is cleared when the CS pin goes high.
Applications must provide a wait time of about 1ms.
Use DSPOFF to execute this operation.
Applications must provide a wait time of about 1ms.
Use DSPOFF to execute this operation.
Applications must provide a wait time of about 1ms.
Use DSPOFF to execute this operation.
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