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LCD_A Controller Operation
19-12 LCD_A Controller
19.2.7 2-Mux Mode
In 2-mux mode, each MSP430 segment pin drives two LCD segments and two
common lines, COM0 and COM1, are used. Figure 19−6 shows some
example 2-mux, 1/2 bias waveforms.
Figure 19−6. Example 2-Mux Waveforms
COM1
COM0
COM0
COM1
SP1
SP2
SP1
SP2
SP3
SP4
V1
V3
V5
V1
V5
V1
V5
V1
V3
0 V
−V3
−V1
V1
V3
0 V
−V3
−V5
f
frame
Resulting Voltage for
Segment h (COM0−SP2)
Segment Is On.
Resulting Voltage for
Segment b (COM1−SP2)
Segment Is Off.
SP = Segment Pin
b
h
V1
V3
V5