参数资料
型号: MCP3421A3T-E/CH
厂商: Microchip Technology
文件页数: 13/42页
文件大小: 0K
描述: IC ADC 18BIT 3.75SPS 1CH SOT23-6
产品培训模块: MCP3901 Analog Front End
标准包装: 1
位数: 18
采样率(每秒): 3.75
数据接口: I²C,串行
转换器数目: 1
电压电源: 单电源
工作温度: -40°C ~ 125°C
安装类型: 表面贴装
封装/外壳: SOT-23-6
供应商设备封装: SOT-23-6
包装: 标准包装
输入数目和类型: 2 个单端,双极;1 个差分,单极
产品目录页面: 672 (CN2011-ZH PDF)
其它名称: MCP3421A3T-E/CHDKR
MCP3421
DS22003E-page 20
2009 Microchip Technology Inc.
FIGURE 5-3:
iming Diagram For Reading From The MCP3421 With 18-Bit Mode.
9
1
9
1
9
1
9
1
9
1
9
1
11
0
1
A
2
A1
A0
D
RDY
O
/C
AC
K
b
y
MCP34
2
1
R/
W
St
a
rt
B
it
b
y
Mast
er
Re
peat
of
D17
(MSB
)
2n
d
B
y
te
Upper
Dat
a
Byte
(Dat
a
on
Clocks
1-
6th
can
be
igno
red)
ACK
by
Mast
er
AC
K
b
y
Mast
er
AC
K
by
Maste
r
T
o
con
tin
ue:
A
C
K
b
y
Mast
er
17
D
16
D
15
D
14
D
13
D
12
D
11
D
10
D
9
D
8
D
7
D
6
D
5
D
4
D
3
D
2
D
1
D
0
C
1
C
0
S
1
S
0
G
1
G
0
1
s
tB
y
te
MCP34
21
Addr
ess
Byt
e
3rd
Byt
e
Mi
ddle
Dat
a
B
y
te
4t
h
Byte
Lo
w
e
rDa
ta
Byte
5t
h
Byte
Con
fig
uration
B
y
te
(Op
tio
nal)
C
1
C
0
S
1
S
0
G
1
G
0
NAK
by
Master
St
o
p
B
it
b
y
Mast
er
(Op
tio
nal)
Nt
h
Repea
te
d
B
y
te
:
Con
fig
uration
Byte
Note:
MCP3
421
de
vice
code
is
1101
.
Se
e
for
det
a
ils
in
Address
Byte.
S
top
bi
tor
NAK
b
it
can
b
e
issued
an
y
time
duri
ng
readi
ng.
Dat
a
b
it
s
on
clo
cks
1
-
6th
in
2nd
byte
are
repe
ated
MSB
an
d
ca
n
be
ign
o
red.
Configu
ration
byte
repea
ts
as
lon
g
a
s
clo
ck
is
provi
ded
af
ter
the
5
th
byte.
SC
L
SD
A
RDY
O
/C
T
o
e
nd:
NAK
b
y
Mast
er
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