BU9796FS Datasheet, PDF (4/12 Pages) Rohm – LCD Segment Driver series 80-segment Drivers (20SEG×4COM)

BU9796FS
● 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
LSB
D7 D6 D5 D4 D3 D2 D1 D0
C
0
1 P4 P3 P2 P1 P0
Set Power save mode FR
Setup
Normal mode
Power save mode1
Power save mode2
Power save mode3
P4
P3 Reset initialize condition
0
0
○
0
1
1
0
1
1
Set LCD drive waveform
Setup
Line inversion
Frame inversion
P2 Reset initialize condition
0
○
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
LSB
D7 D6 D5 D4 D3 D2 D1 D0
C
1
0
*
P3 P2
*
*
(*: Don’t Care)
Set display ON and OFF
Setup
P3
Display OFF
0
Display ON
1
Reset initialize condition
○
Set bias level
Setup
1/3 Bias
1/2 Bias
P3 Reset initialize condition
0
○
1
Technical Note
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4/11
2009.05 - Rev.A