BU9728AKV Datasheet, PDF (9/10 Pages) Rohm – LCD driver for segment-type LCDs

Standard ICs
•^{LCD drive waveforms}
VDD
V1
COM0
V2
V3
VDD
V1
COM1
V2
V3
VDD
V1
COM2
V2
V3
VDD
V1
COM3
V2
V3
Frame cycle
SEG0
SEG31
VDD
V1
V2
V3
VDD
V1
V2
V3
VDD
V1
V2
V3
VDD
V1
V2
V3
VDD
V1
V2
V3
BU9728AKV
COM0 COM1 COM2 COM3
0
0
0
0
Display none of the segments COM0 to 3.
1
0
0
0
Display segment which
applies to COM0.
0
1
0
0
Display segment which
applies to COM1.
0
1
0
1
Display segments which
apply to COM1 and COM3.
1
1
1
1
Display segments which
apply to COM0 to COM3.
9