10
3886 Group
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
MITSUBISHI MICROCOMPUTERS
MEMORY
Special Function Register (SFR) Area
The Special Function Register area in the zero page contains con-
trol registers such as I/O ports and timers.
RAM
RAM is used for data storage and for stack area of subroutine
calls and interrupts.
ROM
The first 128 bytes and the last 2 bytes of ROM are reserved for
device testing and the rest is user area for storing programs. Pro-
gram/Erase of the reserved ROM area is possible in the EPROM
version and the flash memory version
Interrupt Vector Area
The interrupt vector area contains reset and interrupt vectors.
Zero Page
Access to this area with only 2 bytes is possible in the zero page
addressing mode.
Special Page
Access to this area with only 2 bytes is possible in the special
page addressing mode.
Fig. 8 Memory map diagram
0
1
0
0
1
6
0
0
0
0
1
6
0
0
4
0
1
6
F
F
0
0
1
6
F
F
D
C
1
6
F
F
F
E
1
6
F
F
F
F
1
6
1
9
2
2
5
6
3
8
4
5
1
2
6
4
0
7
6
8
8
9
6
1
0
2
4
1
5
3
6
2
0
4
8
X
X
X
X
1
6
0
0
F
F
1
6
0
1
3
F
1
6
0
1
B
F
1
6
0
2
3
F
1
6
0
2
B
F
1
6
0
3
3
F
1
6
0
3
B
F
1
6
0
4
3
F
1
6
0
6
3
F
1
6
0
8
3
F
1
6
4
0
9
6
8
1
9
2
1
2
2
8
8
1
6
3
8
4
2
0
4
8
0
2
4
5
7
6
2
8
6
7
2
3
2
7
6
8
3
6
8
6
4
4
0
9
6
0
4
5
0
5
6
4
9
1
5
2
5
3
2
4
8
5
7
3
4
4
6
1
4
4
0
F
0
0
0
1
6
E
0
0
0
1
6
D
0
0
0
1
6
C
0
0
0
1
6
B
0
0
0
1
6
A
0
0
0
1
6
9
0
0
0
1
6
8
0
0
0
1
6
7
0
0
0
1
6
6
0
0
0
1
6
5
0
0
0
1
6
4
0
0
0
1
6
3
0
0
0
1
6
2
0
0
0
1
6
1
0
0
0
1
6
F
0
8
0
1
6
E
0
8
0
1
6
D
0
8
0
1
6
C
0
8
0
1
6
B
0
8
0
1
6
A
0
8
0
1
6
9
0
8
0
1
6
8
0
8
0
1
6
7
0
8
0
1
6
6
0
8
0
1
6
5
0
8
0
1
6
4
0
8
0
1
6
3
0
8
0
1
6
2
0
8
0
1
6
1
0
8
0
1
6
Y
Y
Y
Y
1
6
Z
Z
Z
Z
1
6
R
A
M
R
O
M
0
F
F
E
1
6
0
F
F
F
1
6
S
F
R
a
r
e
a
N
o
t
u
s
e
d
I
n
t
e
r
r
u
p
t
v
e
c
t
o
r
a
r
e
a
R
O
M
a
r
e
a
R
e
s
e
r
v
e
d
R
O
M
a
r
e
a
(
N
o
t
e
2
)
(
1
2
8
b
y
t
e
s
)
Z
e
r
o
p
a
g
e
S
p
e
c
i
a
l
p
a
g
e
R
A
M
a
r
e
a
R
A
M
s
i
z
e
(
b
y
t
e
s
)
A
d
d
r
e
s
s
X
X
X
X
1
6
R
O
M
s
i
z
e
(
b
y
t
e
s
)
A
d
d
r
e
s
s
Y
Y
Y
Y
1
6
R
e
s
e
r
v
e
d
R
O
M
a
r
e
(
N
o
t
e
2
)
A
d
d
r
e
s
s
Z
Z
Z
Z
1
6
S
F
R
a
r
e
a
(
N
o
t
e
1
N
o
t
e
s
1
:
T
h
i
s
a
r
e
a
i
s
S
F
R
i
n
M
3
8
8
6
9
F
F
A
.
T
h
i
s
a
r
e
a
i
s
R
e
s
e
r
v
e
d
i
n
M
3
8
8
6
9
M
F
A
/
M
C
A
/
M
8
A
.
T
h
i
s
a
r
e
a
i
s
n
o
t
u
s
e
d
i
n
M
3
8
8
6
7
M
8
A
/
E
8
A
.
2
:
T
h
i
s
a
r
e
a
i
s
u
sa
b
l
e
i
n
E
P
R
O
M
v
e
r
s
i
o
n
a
n
d
f
l
a
s
h
m
e
m
o
r
y
v
e
r
s
i
o
n
.
Manymanuals.com
Manymanuals.de
Manymanuals.fr
Manymanuals.it
Manymanuals.pl
Manymanuals.cz
Manymanuals.es
Manymanuals-pt.com
Kommentare zu diesen Handbüchern