39
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
MITSUBISHI MICROCOMPUTERS
3827 Group
Fig. 42 LCD drive waveform (1/2 bias)
Internal signal
LCDCK timing
1/4 duty
Voltage level
V
L3
V
L2
=V
L1
V
SS
V
L3
V
SS
COM
0
COM
1
COM
2
COM
3
SEG
0
OFF
ON
OFF
ON
COM
3
COM
2
COM
1
COM
0
COM
3
COM
2
COM
1
COM
0
1/3 duty
V
L3
V
L2
=V
L1
V
SS
V
L3
V
SS
OFF
ON
ON
OFF
ON
OFF
1/2 duty
COM
0
COM
1
COM
2
SEG
0
COM
0
COM
1
SEG
0
V
L3
V
L2
=V
L1
V
SS
V
L3
V
SS
OFF
ON
OFF
ON
OFF
ON
OFF
ON
COM
0
COM
2
COM
1
COM
0
COM
2
COM
1
COM
0
COM
2
COM
1
COM
0
COM
1
COM
0
COM
1
COM
0
COM
1
COM
0