40
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
3827 Group
MITSUBISHI MICROCOMPUTERS
Fig. 43 LCD drive waveform (1/3 bias)
Internal signal
LCDCK timing
1/4 duty
Voltage level
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
OFF
ON
ON
OFF
ON
OFF
1/2 duty
COM
0
COM
1
COM
2
SEG
0
COM
0
COM
1
SEG
0
OFF
ON
OFF
ON
OFF
ON
OFF
ON
V
L3
V
L2
V
SS
V
L1
V
L3
V
L2
V
SS
V
L1
V
L3
V
SS
V
L3
V
L2
V
SS
V
L1
V
L3
V
SS
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