No. 6526-10/38
LC74731W,74732W
Display Control Commands
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.
First byte
Second byte
Command
Command identification code
Data
Data
7
6
5
4
3
2
1
0
7
6
5
4
3
2
1
0
COMMAND0
(Write address setup)
1
0
0
0
V3
V2
V1
V0
0
0
0
H4
H3
H2
H1
H0
at2
at1
CB2
CB1
CB0
CC2
CC1
CC0
COMMAND1 (Character write)
1
0
0
1
IR
SD2
SD1
SD0
0
0
0
C12
C11
C10
C9
C8
C7
C6
C5
C4
C3
C2
C1
C0
COMMAND20
(Vertical display start position)
1
0
1
0
0
0
RRM1 RRM0
0
VP6
VP5
VP4
VP3
VP2
VP1
VP0
COMMAND21
(Horizontal display start position)
1
0
1
0
0
1
0
0
0
HP6
HP5
HP4
HP3
HP2
HP1
HP0
COMMAND22
(Character size)
1
0
1
0
1
0
0
SRM
0
0
0
0
VS1
VS0
HS1
HS0
COMMAND23
(Character size - in line units)
1
0
1
0
1
1
0
LSZUD
0
0
LSZB5 LSZA4
LSZ93
LSZ82
LSZ71
LSZ60
COMMAND3
(Display control)
1
0
1
1
TSTMOD RAMERS OSCSTP SYSRST
0
LCSOFF
XN53S
BLKSEL
LC
FS
BK
DSPON
COMMAND4
(Display control)
1
1
0
0
NP2
NP1
NP0
I/N
0
HLFINT
BCL1 BCL0
CB
PH2
PH1
PH0
COMMAND50
(Sync signal detection 1)
1
1
0
1
0
0
DISLIN
I/E
0
RN2
RN1
RN0
SN3
SN2
SN1
SN0
COMMAND51
(Sync signal detection 2)
1
1
0
1
0
1
MUT1 MUT0
0
O
RNE0 SJN3 SJN2 SJN1 SJC1 SJC0
COMMAND52
(Display control)
1
1
0
1
1
0
EVEBSS LSPSS
0
CINSEL
CINCTL
VNPSEL
VSPSEL
MSKERS
MSKSEL
EGLSEL
COMMAND53
(Display control)
1
1
0
1
1
1
RSLG1 RSLG0
0
0
CTL3
SPOSEL PALAL4
IHSEL
VSSEL
HSSEL
COMMAND60
(Outlining setting)
1
1
1
0
0
0
0
BRM
0
BXBLV1 BXBLV0 BXWLV1 BXWLV0
ATSEL
BLK1
BLK0
COOMAND61
(Outlining setting - in line units)
1
1
1
0
0
1
0
LFCUD
0
0
LFCB5
LFCA4
LFC93
LFC82
LFC71
LFC60
COMMAND62
(Line spacing)
1
1
1
0
1
0
0
GRM
0
O
BXC1
GS1
GS0
GY2
GY1
GY0
COMMAND63
(Line spacing - in line units)
1
1
1
0
1
1
0
LGYUD
0
0
LGYB5
LGYA4
LGY93
LGY82
LGY71
LGY60
COMMAND70
(Display level)
1
1
1
1
0
0
0
LRM
0
0
BKLC1
BKLC0
CHLC1 CHLC0
RSLC1
RSLC0
COMMAND71
(Display level - in line units)
1
1
1
1
0
1
0
LCLUD
0
0
LCLB5
LCLA4
LCL93
LCL82
LCL71
LCL60
COMMAND72
(Halftone - in line units)
1
1
1
1
1
0
LHTDAT LHTUD
0
0
LHTB5 LHTA4 LHT93 LHT82 LHT71 LHT60
COMMAND73
(RGB control)
1
1
1
1
1
1
0
0
0
DASSS
GBSEL
OUTSEL HSPSW
XONSS
BLK01
BLK00
Note that when the display character data write command (COMMAND1) is written, tthese ICs lock into the display character data write mode, and another
first byte cannot be written.
When the CS pin is set high, the these ICs are set to the COMMAND0 (display memory write address setup mode) state.