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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： | 29/30页 |
| 文件大小： | 320K |
| 代理商： | LC74794M |
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No. 5557-8/30
LC74794, 74794M
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 commands
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 LC74794/M locks into the display
character data write mode, and another first byte cannot be written.
When the CS1 pin is set high, the LC74794/M is set to the COMMAND0 (display memory write address setup mode)
state.
First byte
Second byte
Command
Command identification code
Data
7654321076543210
COMMAND0
1
0
V3
V2
V1
V0
0
H4
H3
H2
H1
H0
Write address setup
COMMAND1
10010000
at
c6
c5
c4
c3
c2
c1
c0
Character write
COMMAND2
1
0
1
0
VS
0
FS
VP
Vertical character size and
21
20
11
10
5
43210
vertical display start position
COMMAND3
1011
HS
0
HP
Horizontal character size and
21
20
11
10
5
4
3
2
1
0
horizontal display start position
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
00
HLF
BCL
CB
PH
Display control
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
111101000000
LNC
MOD
LNB
MOD
Display control
SEL
3
SEL
2
COMMAND12
1111010100000
SEL
CTL
Display control
213
COMMAND13
111101100
CPA
0
VPM
VPS/PDC control
10
3210
COMMAND14
1
0111000
HBS
BMS
EMS
DCE
VPS/PDC control
21
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
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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