BU9728AKV_08 Datasheet, PDF (15/24 Pages) Rohm – For 128-140 Segment type LCD LCD Segment Driver

● Command Description (BU9795AKV/AFV/AGUW)
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.
○ Mode Set (MODE SET)
MSB
LSB
D7 D6 D5 D4 D3 D2 D1 D0
C1
0
* P3 P2 *
* (*:Don’t care)
Set display ON and OFF
Setting
Display OFF (DISPOFF)
Display ON (DISPON)
P3 ^{Reset initialize condition}
0
○
1
Set bias level
Setting
1/3 Bias
1/2 Bias
P2 ^{Reset initialize condition}
0
○
1
○ Address set (ADSET)
MSB
LSB
D7 D6 D5 D4 D3 D2 D1 D0
C 0 0 P4 P3 P2 P1 P0
Address data is specified in P[4:0] and P2 (ICSET command) as follows.
Internal register
Bit of each command
MSB
Address [5]
ICSET [P2]
Address [4]
ADSET [P4]
・・・
・・・
LSB
Address [0]
ADSET [P0]
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