Technical Note

4/11

BU9796FS

www.rohm.com

2009.05 - Rev.A

© 2009 ROHM Co., Ltd. All rights reserved.

● Command Description

D7 (MSB) is bit for command or data judgment.

Refer to Command and data transfer method.

C： 0： Next byte is RAM write data.

1： Next byte is command.

○ Display control (DISCTL)

MSB

D7

D6

D5

D4

D3

D2

D1

LSB

D0

C

0

1

P4

P3

P2

P1

P0

Set Power save mode FR

Setup

P4

P3

Reset initialize condition

Normal mode

0

0

○

Power save mode1

0

1

Power save mode2

1

0

Power save mode3

1

1

Set LCD drive waveform

Setup

P2

Reset initialize condition

Line inversion

0

○

Frame inversion

1

Set Power save mode SR

Setup

P1

P0

Reset initialize condition

Power save mode1

0

0

Power save mode2

0

1

Normal mode

1

0

○

High power mode

1

1

* Please keep condition VDD-VLCD≧3.0V in High power mode.

○ Mode Set (MODE SET)

MSB

D7

D6

D5

D4

D3

D2

D1

LSB

D0

C

1

0

*

P3

P2

*

*

(*: Don’t Care)

Set display ON and OFF

Setup

P3

Reset initialize condition

Display OFF

0

○

Display ON

1

Set bias level

Setup

P3

Reset initialize condition

1/3 Bias

0

○

1/2 Bias

1