Texas Instruments MSP430x4xx - Manual (Page 343)

LCD Controller Operation
18-12 LCD Controller
18.2.8 3-Mux Mode
In 3-mux mode, each MSP430 segment pin drives three LCD segments and
three common lines, COM0, COM1 and COM2 are used. Figure 18−7 shows
some example 3-mux waveforms.
Figure 18−7. Example 3- Mux Waveforms
COM0
COM1
COM2
COM0
COM2
SP1
SP2
SP3
SP3
SP2
SP1
f
frame
V1
V
2
V4
V5
V1
V5
V1
0 V
−V1
V1
0 V
−V1
COM1
Resulting Voltage for
Segment e (COM0−SP1)
Segment Is Off.
Resulting Voltage for
Segment d (COM0−SP2)
Segment Is On.
SP = Segment Pin
d
e
V1
V
2
V4
V5
V1
V
2
V4
V5
V1
V
2
V4
V5
V1
V
2
V4
V5