MITSUBISHI MICROCOMPUTERS
3822 Group
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
Internal logic
LCDCK timing
1/4 duty
Voltage level
V
V
V
L3
L2=VL1
SS
COM
COM
COM
COM
0
1
2
3
V
L3
SEG
0
VSS
OFF
ON
OFF
ON
COM
3
COM3
COM
2
COM
1
COM
0
COM
2
COM
1
COM0
1/3 duty
V
V
V
L3
L2=VL1
SS
COM
COM
COM
0
1
2
V
L3
SEG
0
VSS
ON
OFF
ON
OFF
ON
OFF
COM
0
COM
0
COM
2
COM
1
COM
2
COM
1
COM
0
COM2
1/2 duty
V
V
V
L3
L2=VL1
SS
COM
0
COM
1
V
L3
SEG
0
VSS
ON
OFF
ON
OFF
ON
OFF
ON
OFF
COM
0
COM
1
COM
0
COM
1
COM
1
COM
0
COM
1
COM0
Fig. 36 LCD drive waveform (1/2 bias)
38