lc74761m Sanyo Semiconductor Corporation, lc74761m Datasheet - Page 6

• Manufacturer Part Number: lc74761m
• Description: On-screen Display Lsi
• Manufacturer: Sanyo Semiconductor Corporation

Display Control Commands
Display control commands are input in an 8-bit serial format. Commands consist of a command identification code in the
first byte and data in the second and following bytes. The following commands are supported.
1 COMMAND0: Display memory (VRAM) write address setting command
2 COMMAND1: Display character data write command
3 COMMAND2: Vertical display start position and character size (lines 1 and 2) setting command
4 COMMAND3: Horizontal display start position and character size (lines 9 and 11) setting command
5 COMMAND4: Display control setting command 1
6 COMMAND5: Display control setting command 2
7 COMMAND6: Display control setting command 3
8 COMMAND7: Display control setting command 4
Display Control Command Table
Once the command identification code in the first bite is written, it is stored internally until the first byte of the following
command is written. However, when the display character data write command (COMMAND1) is written, the system
becomes locked in display character data write mode, and the first byte cannot be overwritten.
When the CS pin is set high the command state is set to COMMAND0, i.e., display memory write address setting mode.
COMMAND0
Write address
COMMAND1
Character write
COMMAND2
Vertical display start position
COMMAND3
Horizontal display start position
COMMAND4
Display control 1
COMMAND5
Display control 2
COMMAND6
Display control 3
COMMAND70
Display control 4
COMMAND71
Display control 5
COMMAND72
Display control 6
COMMAND73
Display control 7
Command
Command identification code
7
1
1
1
1
1
1
1
1
1
1
1
6
0
0
0
0
1
1
1
1
1
1
1
5
0
0
1
1
0
0
1
1
1
1
1
First byte
4
0
1
0
1
0
1
0
1
1
1
1
LC74761, 74761M
MOD MOD MOD MOD
RST
V3
SZ
SZ
PH
21
B1
3
0
2
3
0
0
1
1
RAM
V2
SZ
SZ
PH
20
B0
2
0
1
2
0
1
0
1
Data
OSC
at2
V1
SZ
SZ
PH
11
91
1
0
1
0
0
0
0
LINS
LINS
RND
LINS
LINS
at1
V0
SZ
SZ
I/E
10
90
0
0
c7
7
0
0
0
0
0
0
0
0
0
0
VCOS
TST CHAL BLK
HFI
EG
I/N
c6
6
0
0
0
1
2
0
0
M30S SMS
BLK
LIN
VP
HP
PS
c5
5
0
5
5
1
5
2
0
0
Second byte
BLK
LIN
VP
HP
H4
PS
c4
4
4
4
0
4
1
0
0
Data
VCOS SOUT VOUT HOUT
MOD MOD MOD MOD
VMN SVIS
RSL
IOS
LIN
H3
VP
HP
BK
c3
3
3
3
1
1
3
3
2
ATS
RSL
BCL
LIN
H2
VP
HP
c2
2
2
2
0
1
2
2
No. 4846-6/20
CVM
VNS
BCL
LIN
H1
VP
HP
c1
1
1
1
0
0
1
1
DSP
XTS
VSS
LIN
H0
VP
HP
CB
c0
0
0
0
0
0