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| 型號(hào)： | M38867M8A-A11HP |
| 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(yè)數(shù)： | 53/110頁(yè) |
| 文件大?。?/td> | 1601K |
| 代理商： | M38867M8A-A11HP |
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53
3886 Group
SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER
MITSUBISHI MICROCOMPUTERS
D-A CONVERTER
The 3886 group has two internal D-A converters (DA
1
and DA
2
)
with 8-bit resolution.
The D-A converter is performed by setting the value in each D-A
conversion register. The result of D-A conversion is output from
the DA
1
or DA
2
pin by setting the DA output enable bit to “1”.
When using the D-A converter, the corresponding port direction
register bit (P5
6
/DA
1
/PWM
01
or P5
7
/DA
2
/PWM
11
) must be set to
“0” (input status).
The output analog voltage V is determined by the value n (decimal
notation) in the D-A conversion register as follows:
V = V
REF
n/256 (n = 0 to 255)
Where V
REF
is the reference voltage.
At reset, the D-A conversion registers are cleared to “00
16
”, the
DA output enable bits are cleared to “0”, and the P5
6
/DA
1
/PWM
01
and P5
7
/DA
2
/PWM
11
pins become high impedance.
The DA output does not have buffers. Accordingly, connect an ex-
ternal buffer when driving a low-impedance load.
Set V
CC
to 4.0 V or more when using the D-A converter.
Fig. 50 Block diagram of D-A converter
Fig. 51 Equivalent connection circuit of D-A converter (DA1)
P
5
6
/
D
A
1
/
P
W
M
0
1
D
-
A
1
c
o
n
v
e
r
s
i
o
n
r
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g
i
s
t
A
1
e
r
(
8
)
R
-
2
R
r
e
s
i
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o
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a
d
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e
r
D
o
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P
5
7
/
D
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/
P
W
M
1
1
D
-
A
2
c
o
n
v
e
r
s
i
o
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r
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g
i
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t
A
2
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(
8
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-
2
R
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t
o
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a
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d
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D
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b
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a
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s
A
V
S
S
V
R
E
F
“0
”
“1
”
M
S
“0
B
”
“1
”
R
2
R
R
2
R
R
2
R
R
2
R
R
2
R
R
2
R
R
2
R
2
R
S
L
B
2
R
P
5
6
/
D
A
1
/
P
W
M
0
1
D
-
A
1
c
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v
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| M38867M8A-XXXHP | 制造商:MITSUBISHI 制造商全稱:Mitsubishi Electric Semiconductor 功能描述:SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER |
| M38867M8-XXXHP | 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER |
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| M38867MB-XXXHP | 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:SINGLE-CHIP 8-BIT CMOS MICROCOMPUTER |
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