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參數資料
| 型號： | LC74770M |
| 元件分類： | 畫面疊加 |
| 英文描述： | ON-SCREEN DISPLAY IC, PDSO24 |
| 封裝： | MFP-24 |
| 文件頁數： | 7/11頁 |
| 文件大小： | 252K |
| 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
7654321076543210
COMMAND 0
1000
V3
V2
V1
V0
000
H4
H3
H2
H1
H0
Write address
COMMAND 1
10010000
at
c6
c5
c4
c3
c2
c1
c0
Character write
COMMAND 2
1010000000
VP
Vertical display position
543210
start position
COMMAND 3
1011000000
HP
Horizontal display position
543210
start position
COMMAND 4
1100
TST
RCL
OSC
RST
0
MD1
MD0
EG
BK
RV
DSP
Display control
10
COMMAND 5
1101000
LS
00
LN
BLK2 and CHA2 output control:
654321
lines 1 to 6, and line size control
COMMAND 6
BLK2 and CHA2 output control:
1110
P3
P2
P1
P0
00
LN
lines 7 to 12, and general-purpose
12
11
10
9
8
7
port control
Register content
DA0 to DA7
Register name
State
Function
Note
7—
1
6—
0
Command 0 identification code
5—
0
Sets the display memory write address.
4—
0
3V3
0
1
2V2
0
1
Display memory address (0 to B hexadecimal)
1V1
0
1
0V0
0
1
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