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LCD Controller Operation
18-15LCD Controller
18.2.9 4-Mux Mode
In 4-mux mode, each MSP430 segment pin drives four LCD segments and all
four common lines, COM0, COM1, COM2, and COM3 are used. Figure 18−9
shows some example 4-mux waveforms.
Figure 18−9. Example 4-Mux Waveforms
f
frame
V1
V2
V4
V5
V1
0 V
−V1
V1
0 V
−V1
COM0
COM1
COM2
COM3
SP1
SP2
COM3
COM2
COM1
COM0
SP2
SP1
Resulting Voltage for
Segment e (COM1−SP1)
Segment Is Off.
Resulting Voltage for
Segment c (COM1−SP2)
Segment Is On.
SP = Segment Pin
c
e
V1
V2
V4
V5
V1
V2
V4
V5
V1
V2
V4
V5
V1
V2
V4
V5
V1
V2
V4
V5