參數(shù)資料
型號: M38503M2H-XXXFP
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(jī)
文件頁數(shù): 45/99頁
文件大?。?/td> 1384K
代理商: M38503M2H-XXXFP
45
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
MITSUBISHI MICROCOMPUTERS
3850 Group (Spec. H/A)
RESET CIRCUIT
To reset the microcomputer, RESET pin must be held at an
L
level for 20 cycles or more of X
IN
. Then the RESET pin is returned
to an
H
level (the power source voltage must be between 2.7 V
and 5.5 V, and the oscillation must be stable), reset is released.
After the reset is completed, the program starts from the address
contained in address FFFD
16
(high-order byte) and address
FFFC
16
(low-order byte). Make sure that the reset input voltage is
less than 0.54 V for V
CC
of 2.7 V.
Fig. 49 Reset sequence
Fig. 48 Reset circuit example
(Note)
0
.
2
V
C
C
0V
0V
P
o
w
e
r
o
n
V
C
C
R
E
S
E
T
V
C
C
R
E
S
E
T
P
c
v
o
i
w
l
t
c
e
g
i
r
s
o
d
u
e
r
t
c
e
e
c
i
a
u
e
t
o
n
r
t
P
v
o
o
w
l
t
e
g
r
s
o
u
r
c
e
a
e
R
v
e
o
s
t
e
a
t
e
i
n
p
u
t
l
g
N
o
t
e
:
R
e
s
e
t
r
e
l
e
a
s
e
v
o
l
t
a
g
e
;
V
c
c
=
2
.
7
V
R
E
S
E
T
D
a
t
a
φ
A
d
d
r
e
s
s
S
Y
N
C
X
I
N
:
8
t
o
1
3
c
l
o
c
k
c
y
c
l
e
s
X
I
N
FFFC
F
F
D
A
D
H
,
L
A
D
L
AD
H
1
2
3
:
:
:
T
T
A
h
h
l
l
e
e
s
f
q
i
g
r
e
u
n
q
e
a
u
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l
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t
i
s
n
o
e
c
n
x
y
m
c
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r
e
a
p
l
a
k
X
I
t
s
i
o
(
N
n
a
)
o
n
f
n
d
f
d
R
(
X
I
i
c
E
N
)
a
S
a
a
T
n
n
a
d
r
f
n
e
(
φ
)
d
i
n
i
f
s
i
r
f
e
n
(
X
I
d
a
l
N
)
s
s
.
a
=
t
2
t
h
f
(
φ
)
a
t
.
e
r
t
i
t
e
E
u
e
t
n
t
e
d
p
e
n
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o
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h
e
p
r
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v
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s
s
t
a
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.
e
R
e
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r
o
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a
b
l
e
.
N
o
t
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s
R
E
S
E
T
O
U
T
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