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MCP3204-CI/P 数据表(PDF) 18 Page - Microchip Technology

部件名 MCP3204-CI/P
功能描述  2.7V 4-Channel/8-Channel 12-Bit A/D Converters with SPI??Serial Interface
PDF  34 Pages
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制造商  MICROCHIP [Microchip Technology]
网页  http://www.microchip.com
标志 MICROCHIP - Microchip Technology

MCP3204-CI/P 数据表(HTML) 18 Page - Microchip Technology

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MCP3204/3208
DS21298D-page 18
© 2007 Microchip Technology Inc.
FIGURE 6-1:
SPI Communication using 8-bit segments (Mode 0,0: SCLK idles low).
FIGURE 6-2:
SPI Communication using 8-bit segments (Mode 1,1: SCLK idles high).
1
2
3
4
5
6
7
8
9
10
11
12
13 14
15
16
CS
SCLK
DIN
X = “Don’t Care” Bits
17
18
19
20
21
22
23
24
DOUT
NULL
BIT B11 B10 B9 B8
B7
B6 B5 B4 B3
B2
B1 B0
HI-Z
MCU latches data from A/D
Data is clocked out of A/D
converter on falling edges
converter on rising edges of SCLK
DO
Don’t Care
SGL/
DIFF
D1
D2
Start
00
0
0
0
1
XX
X
X
X
DO
XXX
X
X
XX
X
B7
B6
B5
B4
B3
B2
B1
B0
B11 B10 B9
B8
0
???
?????
??
?
D1
D2
SGL/
DIFF
Start
Bit
(Null)
MCU Transmitted Data
(Aligned with falling
edge of clock)
MCU Received Data
(Aligned with rising
edge of clock)
X
Data stored into MCU receive
register after transmission of first
8 bits
Data stored into MCU receive
register
after
transmission
of
second 8 bits
Data stored into MCU receive
register after transmission of last
8 bits
Don’t Care
00
0
0
0
1
XX
X
X
X
DO
XXX
X
X
XX
X
B7 B6 B5
B4 B3 B2 B1 B0
B11 B10 B9 B8
0
???
?????
??
?
D1
D2
SGL/
DIFF
(Null)
X
23
B1
X
1
2
3
4
5
6
7
8
9
10
111213
14
15
16
CS
SCLK
DIN
X = “Don’t Care” Bits
17
18
19
20
21
22
23
24
DOUT
DO
Don’t Care
NULL
BIT B11 B10 B9
B8
B6 B5 B4 B3
B2 B1 B0
HI-Z
000
001
XXXX
X
DO
SGL/
DIFF
XXX
XXXXX
B7 B6 B5 B4 B3 B2 B1 B0
B11 B10 B9 B8
0
?????
???
???
MCU latches data from A/D converter
on rising edges of SCLK
Data is clocked out of A/D
converter on falling edges
D1
D2
SGL/
DIFF
Start
Bit
(Null)
D1
D2
Start
MCU Transmitted Data
(Aligned with falling
edge of clock)
MCU Received Data
(Aligned with rising
edge of clock)
B7
X
Data stored into MCU receive
register after transmission of first
8 bits
Data stored into MCU receive
register after transmission of
second 8 bits
Data stored into MCU receive
register after transmission of last
8 bits
DO



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