BU9728AKV_08 Datasheet, PDF (16/24 Pages) Rohm – For 128-140 Segment type LCD LCD Segment Driver

○ Display control (DISCTL)
MSB
LSB
D7 D6 D5 D4 D3 D2 D1 D0
C 0 1 P4 P3 P2 P1 P0
Set Frame frequency
Setting
80Hz
71Hz
64Hz
53Hz
P4
P3 Reset initialize condition
0
0
○
0
1
1
0
1
1
Set LCD drive waveform
Setting
P2
Line inversion
0
Frame inversion
1
Reset initialize condition
○
Set Power save mode
Setting
P1 P0 Reset initialize condition
Power save mode 1 0 0
Power save mode 2 0 1
Normal mode
10
○
High power mode
11
＊ VDD-VLCD>=3.0V is required for High power mode.
○ Set IC Operation (ICSET)
MSB
LSB
D7 D6 D5 D4 D3 D2 D1 D0
C 1 1 0 1 P2 P1 P0
P2: MSB data of DDRAM address. Please refer to “ADSET” command.
Setting
Address MSB‘0’
Address MSB‘1’
P2 Reset initialize condition
0
○
1
Set Software Reset condition
Setting
P1
No operation
0
Software Reset
1
Switch between internal clock and external clock.
Setting
P0 Reset initialize condition
Internal clock
0
○
External clock input
1
16/23