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參數(shù)資料
| 型號(hào)： | LC74770M |
| 廠商： | Sanyo Electric Co.,Ltd. |
| 英文描述： | On-Screen Display Controller LSI |
| 中文描述： | 屏幕顯示控制器芯片 |
| 文件頁數(shù)： | 5/11頁 |
| 文件大?。?/td> | 125K |
| 代理商： | LC74770M |
Display Control Command Table
Once written, the command identification code in the first byte is stored until the next first byte is written. However,
when the display character data write command (COMMAND1) is written, the LC74770M locks into the display
character data write mode, and another first byte cannot be written.
When a high level is input to the CS pin, the LC74770M is set to COMMAND0 (display memory write address setup
mode).
1
COMMAND 0 (Display memory write address setup command)
First byte
No. 4248-5/11
LC74770M
First byte
Second byte
Command
Command identification code
Data
Data
7
6
5
4
3
2
1
0
7
6
5
4
3
2
1
0
COMMAND 0
Write address
1
0
0
0
V3
V2
V1
V0
0
0
0
H4
H3
H2
H1
H0
COMMAND 1
Character write
1
0
0
1
0
0
0
0
at
c6
c5
c4
c3
c2
c1
c0
COMMAND 2
Vertical display position
start position
1
0
1
0
0
0
0
0
0
0
VP
5
VP
4
VP
3
VP
2
VP
1
VP
0
COMMAND 3
Horizontal display position
start position
1
0
1
1
0
0
0
0
0
0
HP
5
HP
4
HP
3
HP
2
HP
1
HP
0
COMMAND 4
Display control
1
1
0
0
TST
RCL
OSC
RST
0
MD1
MD0
EG
BK
1
BK
0
RV
DSP
COMMAND 5
BLK2 and CHA2 output control:
lines 1 to 6, and line size control
1
1
0
1
0
0
0
LS
0
0
LN
6
LN
5
LN
4
LN
3
LN
2
LN
1
COMMAND 6
BLK2 and CHA2 output control:
lines 7 to 12, and general-purpose
port control
1
1
1
0
P3
P2
P1
P0
0
0
LN
12
LN
11
LN
10
LN
9
LN
8
LN
7
Register content
DA0 to DA7
Register name
State
Function
Note
7
—
1
6
—
0
Command 0 identification code
Sets the display memory write address.
5
—
0
4
—
0
3
V3
0
1
2
V2
0
1
Display memory address (0 to B hexadecimal)
1
V1
0
1
0
V0
0
1
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