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参数资料
| 型号： | LC74798M |
| 元件分类： | 画面叠加 |
| 英文描述： | ON-SCREEN DISPLAY IC, PDSO30 |
| 封装： | 0.375 INCH, MFP-30 |
| 文件页数： | 31/32页 |
| 文件大小： | 322K |
| 代理商： | LC74798M |
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Display Control Commands
Display control commands have an 8-bit format and are transferred using the serial input function. Commands consist of
a command identification code in the first byte and command data in the following bytes. The following commands are
supported.
1 COMMAND0: Display memory (VRAM) write address setup command
2 COMMAND1: Display character data write command
3 COMMAND2: Vertical display start position and vertical character size setup command
4 COMMAND3: Horizontal display start position and horizontal character size setup command
5 COMMAND4: Display control setup command
6 COMMAND5: Display control setup command
7 COMMAND6: Synchronizing signal detection setup command
8 COMMAND7 to COMMAND12: Display control setup commands
9 COMMAND13 to COMMAND17: VPS/PDC control commands
No. 5833-8/32
LC74798, 74798M
Display Control Command Table
First byte
Second byte
Command
Command identification code
Data
7654321076543210
COMMAND0
1000
V3
V2
V1
V0
000
H4
H3
H2
H1
H0
(Write address setup)
COMMAND1
10010000
at
c6
c5
c4
c3
c2
c1
c0
(Character write)
COMMAND2 (Vertical character size
1010
VS
0
FS
VP
and vertical display start position)
21
20
11
10
5
43210
COMMAND3 (Horizontal character size
1011
HS
00
HP
and horizontal display start position)
21
20
11
10
5
43210
COMMAND4
1100
TST
RAM
OSC
SYS
0
BLK
BK
RV
DSP
(Display control)
MOD
ERS
STP
RST
2
1
0
1
0
ON
COMMAND5
1101
NP1
NP0
NON
INT
0
RSH
HLF
BCL
CB
PH
(Display control)
LV2
INT
2
1
0
COMMAND6
1110
SEL
MOD
DIS
MUT
0
RN
SN
(Synchronizing signal detection)
0
LIN
2
1
03210
COMMAND7
111100000
CIN
VNP
VSP
MSK
EGL
(Display control)
SEL
CTL
SEL
ERS
SEL
COMMAND8
111100010
LNA
LPA
(Display control)
3210210
COMMAND9
111100100
LNB
LPB
(Display control)
3210210
COMMAND10
111100110
LNC
LPC
(Display control)
3210210
COMMAND11
1111010000
VSP
LNC
MOD
LNB
MOD
(Display control)
DCK
SLC
SEL
3
SEL
2
COMMAND12
111101010
VIN
SEL
HLF
SEL
CTL
(Display control)
NP
2
22
TON
2
1
3
COMMAND13
111101100
CPA
0
VPM
(VPS/PDC control)
10
3210
COMMAND14
111101110
VMW VMW
HBS
BMS
EMS
DCE
(VPS/PDC control)
SE2
SEL
2
1
COMMAND15
1111100000
ECV
(VPS/PDC control)
15
14
13
12
11
5
COMMAND16
111110010
ECP
(VPS/PDC control)
19
18
17
16
15
14
13
COMMAND17
1111101000
ECP
(VPS/PDC control)
25
24
23
22
21
20
Once written, a first byte command identification code is stored until the next first byte is written. However, when the display character data write command
(COMMAND1) is written, the LC74798/M locks into the display character data write mode, and another first byte cannot be written.
When the CS pin is set high, the LC74798/M is set to the COMMAND0 (display memory write address setup mode) state.
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