Technical information

SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
MITSUBISHI MICROCOMPUTERS
3825 Group
3
FUNCTIONAL BLOCK DIAGRAM (Package : 100P6S-A)
Fig. 3 Functional block diagram
A D T
C
N
T
R0,
C
N
T
R1
TO
U
T
C
P
U
A
X
Y
S
P
C
H
P
CL
P
S
R
O
M
S
I
/
O
(
8
)
VL
1
VL
2
VL
3
C
O
M0
C
O
M1
C
O
M2
C
O
M3
3
8
φ
L
C
D
d
r
i
v
e
c
o
n
t
r
o
l
c
i
r
c
u
i
t
R
A
M
L
C
D
d
i
s
p
l
a
y
R
A
M
(
2
0
b
y
t
e
s
)
T
i
m
e
r
X
(
1
6
)
T
i
m
e
r
Y
(
1
6
)
T
i
m
e
r
1
(
8
)T
i
m
e
r
2
(
8
)
T
i
m
e
r
3
(
8
)
D
a
t
a
b
u
s
C
l
o
c
k
g
e
n
e
r
a
t
i
n
g
c
i
r
c
u
i
t
C
l
o
c
k
i
n
p
u
t
X
I
N
C
l
o
c
k
o
u
t
p
u
t
X
O
U
T
XC
O
U
T
S
u
b
-
c
l
o
c
k
o
u
t
p
u
t
X
C
I
N
S
u
b
-
c
l
o
c
k
i
n
p
u
t
V
C
C
R
e
s
e
t
i
n
p
u
t
(
5
V
)
R
E
S
E
T
K e y - o n w a k e u p
R e a l t i m e p o r t f u n c t i o n
I N T0, I N T1
A
-
D
c
o
n
v
e
r
t
e
r
(
8
)
R
T
P0,
R
T
P1
3
9
3
5 9
1
4
0
VS
S
(
0
V
)
9
9
9
8
9
7
9
6
9
5
9
4
9
0
8
9
8
8
8
7
8
6
8
5
8
4
8
3
8
2
8
1
8
0
7
9
S
E
G1
1
S
E
G1
S
E
G2
S
E
G3
S
E
G4
S
E
G5
S
E
G6
S
E
G7
S
E
G8
S
E
G9
S
E
G1
0
S
E
G0
5
76
4
O
u
t
p
u
t
p
o
r
t
P
0
P
0
(
8
)
6
36
26
16
0
5
95
8
4
95
6
O
u
t
p
u
t
p
o
r
t
P
1
P
1
(
8
)
5
55
45
35
25
15
0
4
14
8
I
/
O
p
o
r
t
P
2
P
2
(
8
)
4
74
64
54
4
4
34
2
P
4
(
8
)
1
92
6
I
/
O
p
o
r
t
P
4
2
52
42
32
2
2
12
0
1
11
8
I
/
O
p
o
r
t
P
5
P
5
(
8
)
1
71
61
51
4
1
31
2
I N T2 , I N T3
9
39
2
VR
E
F
A
VS
S
(
0
V
)
P
6
(
8
)
3
1
0
I
/
O
p
o
r
t
P
6
9876
54
P
8
(
2
)
XC
I
N
XC
O
U
T
3
73
6
I
/
O
p
o
r
t
P
8
1
2
1
0
0
C1 C2
7
8
7
7
7
6
7
5
7
4
7
3
S
E
G1
7
S
E
G1
2
S
E
G1
3
S
E
G1
4
S
E
G1
5
S
E
G1
6
O
u
t
p
u
t
p
o
r
t
P
3
P
3
(
8
)
6
57
27
17
06
96
86
76
6
P
7
(
8
)
2
73
4
I
/
O
p
o
r
t
P
7
3
33
23
13
02
92
8