lc74776m Sanyo Semiconductor Corporation, lc74776m Datasheet - Page 9

• Manufacturer Part Number: lc74776m
• Description: Vps/pdc Video On-screen Display
• Manufacturer: Sanyo Semiconductor Corporation

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.
COMMAND0: Display memory (VRAM) write address setup command
COMMAND1: Display character data write command
COMMAND2: Vertical display start position and vertical character size setup command
COMMAND3: Horizontal display start position and horizontal character size setup command
COMMAND4: Display control setup command
COMMAND5: Display control setup command
COMMAND6: Synchronizing signal detection setup command
COMMAND7 to COMMAND12 and COMMAND18: Display control setup commands
COMMAND13 to COMMAND17: VPS/PDC control commands. These commands can only be written with the I
Display Control Command Table
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 LC74776/M locks into the display character data
write mode, and another first byte cannot be written.
When the CS pin is set high, the LC74776/M is set to the COMMAND0 (display memory write address setup mode) state.
COMMAND0
(Write address setup)
COMMAND1
(Character write)
COMMAND2 (Vertical character size and
vertical display start position)
COMMAND3 (Horizontal character size and
horizontal display start position)
COMMAND4
(Display control)
COMMAND5
(Display control)
COMMAND6
(Synchronizing signal detection)
COMMAND7
(Display control)
COMMAND8
(Display control)
COMMAND9
(Display control)
COMMAND10
(Display control)
COMMAND11
(Display control)
COMMAND12
(Display control)
COMMAND18
(Display control)
COMMAND13
(VPS/PDC control)
COMMAND14
(VPS/PDC control)
COMMAND15
(VPS/PDC control)
COMMAND16
(VPS/PDC control)
COMMAND17
(VPS/PDC control)
Command
(the SCL and SDA pins).
Command identification code
7
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
6
0
0
0
0
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
5
0
0
1
1
0
0
1
1
1
1
1
1
1
1
1
1
1
1
1
LC74776, 74776M
First byte
4
0
1
0
1
0
1
0
1
1
1
1
1
1
1
1
1
1
1
1
MOD ERS STP RST
TST RAM OSC SYS
SEL MOD DIS
VS
HS
NP
V3
21
21
3
0
1
0
0
0
0
0
0
0
1
0
0
0
1
1
VS
HS
NP
V2
20
20
2
0
0
0
0
0
0
0
1
1
0
1
1
1
0
0
Data
NON
LIN
HS
V1
VS
11
11
1
0
0
0
1
1
0
0
1
0
1
1
0
0
MUT
INT
HS
V0
VS
10
10
0
0
0
1
0
1
0
1
1
1
0
1
0
1
at
7
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
VMW VMW HBS
RSH HLF
LNA LNA
LNB LNB
LNC LNC
CPA CPA
ECP ECP
BLK
LV2
SEL
SE2
CIN
RN
FS
LC
19
c6
6
0
2
2
3
3
3
0
0
0
2
0
0
DCK
OTD OTD
RNE
ECV
ECP
BLK
CTL
VSP
SEL
CIN
INT
HP
RN
VP
S1
c5
15
18
25
5
0
5
5
1
1
2
2
2
0
1
Second byte
VNP
LNC
VSP
CPA
ECV
ECP
ECP
BLK
BCL
SEL
LNA
LNB
SLC
SJN
VP
HP
RN
H4
S0
c4
14
17
24
4
4
4
0
0
1
1
1
3
0
2
Data
VPM VPM VPM VPM
HBS BMS EMS DCE
ECV ECV ECV ECV
ECP ECP ECP ECP
ECP ECP ECP ECP
VSP MSK MSK EGL
SEL ERS
LNA LPA
LNB LPB
LNC LPC
LNC MOD LNB MOD
SEL
HLF SEL
SJN SJN
INT
HP
CB
SN
H3
VP
BK
13
16
23
c3
3
3
3
1
3
0
0
0
2
3
1
H2
VP
HP
BK
PH
SN
12
15
22
c2
2
2
2
0
2
2
2
2
2
3
2
1
2
No. 6018-9/35
OTH
SEL
LPA
LPB
LPC LPC
SEL
SJC
VP
HP
RV
PH
SN
H1
c1
11
14
21
1
1
1
1
1
1
1
1
1
1
2
C bus
DSP
LPA
LPB
SJC
IND
ON
VP
HP
PH
SN
H0
c0
13
20
0
0
0
0
0
0
0
0
2
0
0
5