参数资料
型号: MCP3421DM-WS
厂商: Microchip Technology
文件页数: 14/42页
文件大小: 0K
描述: BOARD DEMO MCP3421 WEIGHT SCALE
标准包装: 1
主要目的: 参考设计,称量台
嵌入式: 是,MCU,8 位
已用 IC / 零件: MCP3421,MCP6V07,PIC18F4550
主要属性: 2Kg测压元件,灵敏度为1 mV/V
已供物品: 板,线缆,CD,电源
2009 Microchip Technology Inc.
DS22003E-page 21
MCP3421
FIGURE 5-4:
Timing Diagram For Reading From The MCP3421 With 12-Bit to 16-Bit Modes.
1
0
1
A2
A1
A0
ACK
by
M
C
P
3421
St
a
rt
B
it
b
y
Maste
r
2nd
Byt
e
U
p
per
Dat
a
B
y
te
AC
K
b
y
Mast
er
AC
K
by
Maste
r
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
1st
B
y
te
MCP342
1
A
ddre
s
Byte
3rd
B
y
te
Lower
Dat
a
B
y
te
4t
h
Byt
e
C
o
nf
igura
tio
n
Byte
(O
pt
ional
)
C
1
C
0
S
1
S
0
G
1
G
0
NAK
b
y
Maste
r
S
top
Bi
tby
Master
(O
pti
onal)
Nth
Repe
ate
d
Byte
:
Co
nfi
gura
tio
n
B
y
te
Note:
MCP3
421
de
vice
code
is
1101
.
Se
e
for
det
a
ils
in
Addr
ess
Byte.
S
top
bi
tor
NAK
b
it
can
b
e
issued
an
y
time
duri
ng
readi
ng.
In
14
-bit
mo
de:
D15
an
d
D
14
are
repe
ated
MSB
an
d
ca
n
be
ign
o
red
.
In
12
-bit
mo
de:
D15
-
D12
are
repe
ated
MSB
an
d
can
be
ign
o
red
.
Configu
ration
byte
repe
at
s
as
lon
g
a
s
clo
ck
is
provi
ded
af
ter
the
4
th
byte.
9
1
99
1
9
1
9
1
SCL
SDA
9
1
RD
Y
O
/C
R/W
RDY
O
/C
T
o
cont
inue
:ACK
by
Maste
r
T
o
en
d:
NAK
by
Maste
r
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