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LC74731W, LC74732W

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

7654321076543210

COMMAND0

1000

V3

V2

V1

V0

000

H4

H3

H2

H1

H0

(Write address setup)

at2

at1

CB2

CB1

CB0

CC2

CC1

CC0

COMMAND1 (Character write)

1001

IR

SD2

SD1

SD0

000

C12

C11

C10

C9

C8

C7

C6

C5

C4

C3

C2

C1

C0

COMMAND20

101000

RRM1 RRM0

0

VP6

VP5

VP4

VP3

VP2

VP1

VP0

(Vertical display start position)

COMMAND21

101001000

HP6

HP5

HP4

HP3

HP2

HP1

HP0

(Horizontal display start position)

COMMAND22

1010100

SRM

0000

VS1

VS0

HS1

HS0

(Character size)

COMMAND23

1010110

LSZUD

00

LSZB5 LSZA4 LSZ93 LSZ82 LSZ71 LSZ60

(Character size - in line units)

COMMAND3

1011

TSTMOD RAMERS OSCSTP SYSRST

0

LCSOFF

XN53S

BLKSEL

LC

FS

BK

DSPON

(Display control)

COMMAND4

1100

NP2

NP1

NP0

I/N

0

HLFINT BCL1 BCL0

CB

PH2

PH1

PH0

(Display control)

COMMAND50

110100

DISLIN

I/E

0

RN2

RN1

RN0

SN3

SN2

SN1

SN0

(Sync signal detection 1)

COMMAND51

110101

MUT1 MUT0

0

O

RNE0 SJN3 SJN2 SJN1 SJC1 SJC0

(Sync signal detection 2)

COMMAND52

110110

EVEBSS LSPSS

0

CINSEL

CINCTL

VNPSEL

VSPSEL

MSKERS MSKSEL

EGLSEL

(Display control)

COMMAND53

110111

RSLG1 RSLG0

00

CTL3

SPOSEL PALAL4

IHSEL

VSSEL

HSSEL

(Display control)

COMMAND60

1110000

BRM

0

BXBLV1 BXBLV0 BXWLV1 BXWLV0 ATSEL

BLK1

BLK0

(Outlining setting)

COOMAND61

1110010

LFCUD

00

LFCB5

LFCA4

LFC93

LFC82

LFC71

LFC60

(Outlining setting - in line units)

COMMAND62

1110100

GRM

0

O

BXC1

GS1

GS0

GY2

GY1

GY0

(Line spacing)

COMMAND63

1110110

LGYUD

00

LGYB5

LGYA4

LGY93

LGY82

LGY71

LGY60

(Line spacing - in line units)

COMMAND70

1111000

LRM

00

BKLC1

BKLC0 CHLC1 CHLC0 RSLC1 RSLC0

(Display level)

COMMAND71

1111010

LCLUD

00

LCLB5

LCLA4

LCL93

LCL82

LCL71

LCL60

(Display level - in line units)

COMMAND72

111110

LHTDAT LHTUD

00

LHTB5 LHTA4 LHT93 LHT82 LHT71 LHT60

(Halftone - in line units)

COMMAND73

111111000

DASSS

GBSEL OUTSEL HSPSW XONSS

BLK01

BLK00

(RGB control)

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.