
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
MITSUBISHI MICROCOMPUTERS
3825 Group
38
Fig. 35 LCD drive waveform (1/3 bias)
I
n
t
e
r
n
a
l
l
o
g
i
c
L
C
D
C
K
t
i
m
i
n
g
1
/
4
d
u
t
y
V
o
l
t
a
g
e
l
e
v
e
l
V
L
3
V
S
S
C
O
M
0
C
O
M
1
C
O
M
2
C
O
M
3
S
E
G
0
OFF ON OFF ON
COM
3
C
O
M
2
COM
1
C
O
M
0
COM
3
COM
2
C
O
M
1
C
O
M
0
1
/
3
d
u
t
y
OFFO
N O
NO
F
F O
NO
F
F
1/2 duty
COM
0
COM
1
C
O
M
2
SEG
0
C
O
M
0
COM
1
S
E
G
0
OFFO
N O
F
FO
N O
F
FO
N O
F
FON
V
L3
V
L2
V
SS
V
L1
V
L3
V
L2
V
SS
V
L1
V
L
3
V
SS
V
L3
V
L2
V
SS
V
L1
V
L3
V
SS
C
O
M
0
C
O
M
2
COM
1
C
O
M
0
C
O
M
2
COM
1
C
O
M
0
C
O
M
2
COM
1
COM
0
COM
1
C
O
M
0
COM
1
COM
0
COM
1
COM
0
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