DA

Register

Contents

Notes

0 to 7

State

Function

7

—

0

Second byte identification bit

6

LNA3

0

1

5

LNA2

0

1

4

LNA1

0

1

3

LNA0

0

1

2

LPA2

0

1

1

LPA1

0

1

0

LPA0

0

1

No. 5731-17/23

LC74788, 74788M, 74788JM

COMMAND8 (Display control setup command)

• First byte

DA

Register

Contents

Notes

0 to 7

State

Function

7

—

1

6

—

1

Command 8 identification code.

5

—

1

Display control setup.

4

—

1

3

—

0

Extended command 1 identification code

2

—

1

1

VSYSEL

0

Negative polarity

1

Positive polarity

0

HSYSEL

0

Negative polarity

1

Positive polarity

Only valid when CTL3 is high.

switching

Specifies the line whose background is to be

changed.

(If the same line is specified to have different

background colors with LNA*, LNB*, and LNC*, then

the setting specified by the last command issued will

be valid. The previously specified registers (LN* and

LP*) will all be reset to 0.)

Specifies the background color

• Second byte

Note: All registers are set to 0 when the LC74788/M/JM is reset by the RST pin.

LNA3

LNA2

LNA1

LNA0

Specified line

0

0

0

0

Do not change the line background

0

0

0

1

Line 1

0

0

1

0

Line 2

0

0

1

1

Line 3

0

1

0

0

Line 4

0

1

0

1

Line 5

0

1

1

0

Line 6

0

1

1

1

Line 7

1

0

0

0

Line 8

1

0

0

1

Line 9

1

0

1

0

Line 10

1

0

1

1

Line 11

1

1

—

—

Line 12

LPA2

LPA1

LPA0

Line background color (phase)

0

0

0

Cyan

0

0

1

Yellow

0

1

0

Red

0

1

1

Blue

1

0

0

Cyan blue

1

0

1

Green

1

1

0

Orange

1

1

1

Magenta