參數(shù)資料
型號(hào)： M38856F9-HP
廠商： Renesas Technology Corp.
英文描述： SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
中文描述： 單芯片8位CMOS微機(jī)
文件頁(yè)數(shù)： 12/103頁(yè)
文件大?。?/td> 1580K
代理商： M38856F9-HP
3885 Group
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
MITSUBISHI MICROCOMPUTERS
11
MEMORY
RAM
RAM is used for data storage and for stack area of subroutine
calls and interrupts.
ROM
ROM is used for program code and data table storage.
The first 128 bytes and the last 2 bytes of ROM are reserved for
device testing code and the rest is user area. Programming/Eras-
ing of the reserved ROM area is possible in the flash memory
version.
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.
Interrupt Vector Area
The interrupt vector area contains reset and interrupt vectors.
Special Function Register (SFR) Area
The special function register area contains the control registers
such as I/O ports, timers, serial I/O, etc.
Fig. 8 Memory map diagram
0100
16
0000
16
0040
16
FF00
16
FFDC
16
FFFE
16
FFFF
16
XXXX
16
3
4
6
2
9
1
7
1
4
6
5
4
8
2
0
8
4
1
0
0
0
0
0
0
0
1
0
1
0
1
6
6
6
8
4
1
0
0
0
8
8
8
0
1
0
1
0
1
6
6
6
Y
Y
Y
1
6
ZZZZ
16
R
A
M
ROM
1
1
2
0
2
3
4
4
6
8
5
0
0
0
0
4
6
8
3
3
3
F
1
F
1
F
1
6
6
6
0FF0
16
0
F
F
F
1
6
S
F
R
a
r
e
a
Not used
I
n
t
e
r
r
u
p
t
v
e
c
t
o
r
a
r
e
a
R
e
(
s
N
e
o
r
v
t
e
e
)
d
(
1
R
2
O
8
M
b
t
a
e
r
s
e
)
a
y
Z
e
r
o
p
a
g
e
Special page
R
A
M
a
r
e
a
R
A
(
b
M
y
e
s
i
z
)
e
t
s
A
X
d
X
d
X
r
e
X
1
s
s
6
Reserved ROM area
(Note)
R
O
M
a
r
e
a
R
O
(
b
M
y
e
s
i
z
)
e
t
s
A
Y
d
Y
d
Y
r
e
Y
1
s
s
6
A
Z
d
Z
d
Z
r
e
Z
1
s
s
6
SFR area
Notes:
This area is reserved in the mask ROM version.
This area is usable in flash memory version.
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