參數(shù)資料
型號(hào)： M37281MAH-XXXSP
廠商： Renesas Technology Corp.
英文描述： SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER with CLOSED CAPTION DECODER and ON-SCREEN DISPLAY CONTROLLER
中文描述： 單芯片8位CMOS微機(jī)隱蔽字幕解碼器和屏幕顯示控制器
文件頁數(shù)： 12/172頁
文件大小： 1319K
代理商： M37281MAH-XXXSP
M37281MAH
–
XXXSP,M37281MFH
–
XXXSP,M37281MKH
–
XXXSP, M37281EKSP
Rev.1.01 2003.07.16 page 12 of 170
8.2 MEMORY
8.2.1 Special Function Register (SFR) Area
The special function register (SFR) area in the zero page contains
control registers such as I/O ports and timers.
8.2.2 RAM
RAM is used for data storage and for stack area of subroutine calls
and interrupts.
8.2.3 ROM
The M37281MAH-XXXSP has 40K-byte program area and
M37281MFH-XXXSP has 60K-byte program area. The M37281MKH
-XXXSP has 56K-byte program area and 24K-byte data-dedicated
area. For the M37281EKSP, the two area (60K, 24K + 56K) can be
swithed each other by setting the bank control register.
8.2.4 OSD RAM
RAM for display is used for specifying the character codes and col-
ors to display.
8.2.5 OSD ROM
ROM for display is used for storing character data.
8.2.6 Interrupt Vector Area
The interrupt vector area contains reset and interrupt vectors.
8.2.7 Zero Page
The 256 bytes from addresses 0000
16
to 00FF
16
are called the zero
page area. The internal RAM and the special function registers (SFR)
are allocated to this area.
The zero page addressing mode can be used to specify memory and
register addresses in the zero page area. Access to this area with
only 2 bytes is possible in the zero page addressing mode.
8.2.8 Special Page
The 256 bytes from addresses FF00
16
to FFFF
16
are called the spe-
cial page area. The special page addressing mode can be used to
specify memory addresses in the special page area. Access to this
area with only 2 bytes is possible in the special page addressing
mode.
8.2.9 ROM Correction Vector
This is used as the program jump destination addresses for ROM
correction.
Fig. 8.2.1 Memory Map (M37281MKH-XXXSP, M37281EKSP)
0
0
0
1
6
0
0
0
1
C
F
0
0
1
F
1
0
1
6
6
6
0
1
F
0
F
0
F
1
0
1
6
6
F
F
F
1
6
F
D
E
1
6
F
0
0
1
6
0
8
0
0
1
6
1
0
8
0
0
1
6
1
F
F
F
F
1
6
ROM
(60K bytes)
O
S
D
(
R
1
A
5
(
M
3
N
t
(
b
e
C
y
h
t
2
a
e
)
r
a
)
c
t
e
r
)
6
o
s
0
2
2
0
0
1
6
0
5
8
1
6
1
5
7
F
F
1
6
1
8
0
0
0
1
6
1
0
0
0
0
1
6
S
F
R
1
a
r
e
a
S
F
R
2
a
r
e
a
N
o
t
e
s
1
2
:
:
R
T
e
a
f
e
l
r
s
t
o
8
T
.
1
a
1
b
.
l
e
a
8
n
.
1
d
1
8
.
6
.
1
1
O
.
S
5
D
O
R
S
A
D
M
R
A
(
S
M
P
R
(
C
I
T
h
E
a
)
r
.
b
e
4
a
c
t
e
r
)
.
0
2
2
C
0
1
6
0
E
0
1
6
0
B
F
1
6
0
7
7
0
0
1
6
0
A
7
1
6
O
S
D
(
R
1
(
A
2
N
M
0
o
(
y
S
t
1
P
e
)
R
s
)
I
T
E
)
b
t
e
1
A
C
F
F
1
6
0
6
F
F
1
6
RAM
(1536 bytes)
1
B
0
0
0
1
6
1C000
16
1
D
0
0
0
1
6
1
E
0
0
0
1
6
1
F
0
0
0
1
6
2
0
0
0
1
6
I
M37281MKH-XXXSP, M37281EKSP
N
o
t
u
s
e
d
N
o
t
u
s
e
d
Zero page
E
x
t
r
a
a
r
e
a
I
n
t
e
r
r
u
p
t
v
e
c
t
o
r
a
r
e
a
Special page
R
V
V
O
e
e
M
c
t
c
t
c
r
r
o
1
2
r
:
:
r
e
a
a
c
d
d
t
d
d
i
o
r
r
n
e
e
f
s
s
u
n
0
0
c
2
2
t
C
E
i
o
n
o
o
s
s
0
1
0
1
6
6
OSD ROM
(Character font)
(20400 bytes)
Not used
Not used
OSD ROM
(Color dot font)
(9672 bytes)
Not used
Expansion ROM
(20K bytes)
Bank 11
B
a
n
k
1
2
B
a
n
k
1
3
B
a
n
k
1
4
B
a
n
k
1
5
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