參數(shù)資料
型號(hào)： M38869M8A-XXXHP
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)： 32/110頁
文件大?。?/td> 1601K
代理商： M38869M8A-XXXHP
32
3886 Group
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
MITSUBISHI MICROCOMPUTERS
PULSE WIDTH MODULATION (PWM)
OUTPUT CIRCUIT
The 3886 group has two PWM output circuits, PWM0 and PWM1,
with 14-bit resolution respectively. These can operate indepen-
dently. When the oscillation frequency X
IN
is 10 MHz, the
minimum resolution bit width is 200 ns and the cycle period is
3276.8
μ
s. The PWM timing generator supplies a PWM control
signal based on a signal that is the frequency of the X
IN
clock.
Fig. 29 PWM block diagram (PWM0)
The following explanation assumes f(X
IN
) = 8 MHz.
1
4
1
M
/
2
H
P
W
M
0
e
n
a
b
l
e
b
i
t
P
3
0
l
a
t
c
h
P
3
0
/
P
W
M
0
0
P
W
M
0
L
i
r
e
g
i
s
t
e
r
(
a
d
d
r
e
s
s
0
0
3
1
1
6
)
P
(
a
W
M
d
0
e
H
s
r
e
0
g
0
i
s
0
1
t
e
r
d
r
s
3
6
)
b
i
t
7
b
t
0
b
i
t
5
M
S
B
L
S
B
P
W
M
0
b
i
t
7
b
i
t
0
P
t
i
g
W
m
e
M
n
e
0
i
g
r
n
a
t
o
r
(6
4
μ
s
p
e
r
i
o
d
)
(4
0
9
6
μ
s
p
e
r
i
o
d
)
P
W
M
0
l
a
t
c
h
(
1
4
b
i
t
s
)
S
a
e
t
t
w
t
r
o
i
e
“
1
”
t
D
a
t
a
B
u
s
f
8
(
X
I
M
N
)
H
(
z
)
1
4
-
b
i
t
P
W
M
0
c
i
r
c
u
i
t
P
5
6
d
i
r
e
c
t
i
o
n
r
e
g
i
s
t
e
r
P
W
M
0
e
n
a
b
l
e
b
i
t
P
W
M
0
e
n
a
b
l
e
b
i
t
P
5
6
l
a
t
c
h
P
5
6
/
D
A
1
/
P
W
M
0
1
P
W
M
0
o
u
t
p
u
t
s
e
l
e
c
t
i
o
n
b
i
t
P
3
0
d
i
r
e
c
t
i
o
n
r
e
g
i
s
t
e
r
(4
z
)
P
W
M
0
e
n
a
b
l
e
b
i
t
P
W
M
0
o
u
t
p
u
t
s
e
l
e
c
t
i
o
n
b
i
t
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