參數(shù)資料
型號： M38503MXH
廠商： Mitsubishi Electric Corporation
英文描述： SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
中文描述： 單芯片8位CMOS微機
文件頁數(shù)： 41/86頁
文件大小： 1193K
代理商： M38503MXH
41
3850 Group (Spec. H)
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
MITSUBISHI MICROCOMPUTERS
Fig. 45 Flash memory control registers
Fig. 46 CPU rewrite mode set/reset flowchart
F
7
l
a
s
6
h
5
m
e
4
m
o
r
y
2
c
o
1
n
t
r
0
o
l
r
e
g
i
s
t
e
r
S
y
m
M
b
o
R
l
A
0
d
F
d
F
r
E
1
e
s
s
6
W
X
h
X
e
X
n
0
0
r
e
0
s
0
e
1
t
F
C
R
b
b
b
b
b
b
F
M
C
R
0
B
i
t
s
y
m
b
o
l
B
i
t
n
a
m
e
Function
RW
0: Busy (being written or erased)
1: Ready
0: Normal mode
(Software commands invalid)
1: CPU rewrite mode
(Software commands acceptable)
0: Normal mode
(Software commands invalid)
1: CPU rewrite mode
(Software commands acceptable)
C
s
P
e
U
e
r
t
e
b
w
i
r
i
(
t
N
e
o
m
t
o
d
1
e
)
l
c
t
e
F
M
C
R
1
C
e
P
n
U
r
y
r
f
e
l
a
w
g
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m
o
d
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t
F
(
l
N
a
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s
t
h
e
m
2
e
)
m
o
r
y
r
e
s
e
t
b
i
t
0: Normal operation
1: Reset
F
M
C
R
2
F
M
C
R
3
Notes 1:
For this bit to be set to
“
1
”
, the user needs to write a
“
0
”
and then a
“
1
”
to it in succession.
2:
Effective only when the CPU rewrite mode select bit = 1. Set this bit to
“
0
”
subsequently
after setting it to
“
1
”
(reset).
R
Y
/
B
Y
s
t
a
t
u
s
f
l
a
g
Nothing is assigned.
When write, set
“
0
”
. When read, values are indeterminate.
U
s
s
e
e
l
e
r
c
a
t
i
r
o
e
n
a
/
i
t
B
o
o
t
a
r
e
a
b
0: User ROM area
1: Boot ROM area
F
M
C
R
4
b3
b
E
n
d
S
t
a
r
t
E
m
w
x
e
m
i
t
i
c
u
o
g
t
r
e
y
“
1
r
b
”
e
y
a
a
d
s
n
a
t
r
i
t
r
n
h
a
g
e
y
n
f
c
l
a
“
o
s
0
m
h
”
m
m
i
n
a
e
s
n
m
u
c
d
o
c
o
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e
r
y
s
r
s
e
r
e
i
s
s
o
e
e
n
t
t
(
f
l
a
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s
t
o
h
(
t
e
r
e
d
t
b
N
b
e
y
n
)
2
)
S
i
n
g
l
e
-
c
h
i
p
m
o
d
e
,
o
r
b
o
o
t
m
o
d
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S
e
t
C
P
U
m
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d
e
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e
g
i
s
t
e
r
(
N
o
t
e
1
)
U
p
s
r
i
n
g
g
r
s
m
o
f
t
o
w
a
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p
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x
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e
r
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,
o
a
,
r
e
o
J
u
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m
b
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q
t
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t
r
n
a
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p
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r
r
r
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a
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a
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t
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r
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s
l
e
R
p
x
r
e
A
o
g
c
M
r
a
t
e
)
m
d
i
b
n
R
c
A
o
M
n
r
(
S
s
u
y
t
o
l
g
Transfer CPU rewrite mode control
program to internal RAM
Notes 1:
Set bit 6, 7 (Main clock division ratio selection bits ) at CPU mode register (003B
16
).
2:
Before exiting the CPU rewrite mode after completing erase or program operation, always be sure to
execute a read array command or reset the flash memory.
W
r
i
t
e
“
0
”
t
o
C
P
U
r
e
w
r
i
t
e
m
o
d
e
s
e
l
e
c
t
b
i
t
S
w
e
t
t
i
C
n
P
g
U
“
r
”
e
a
w
n
r
d
i
t
e
t
m
e
o
n
d
“
e
1
s
i
e
n
l
e
s
c
u
t
c
c
b
i
t
s
t
s
o
i
o
“
1
n
”
)
(
b
y
r
i
0
h
”
e
C
h
e
c
k
t
h
e
C
P
U
r
e
w
r
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t
e
m
o
d
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e
n
t
r
y
f
l
a
g
*
1
*
1
P
r
o
g
r
a
m
i
n
R
O
M
Program in RAM
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