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MCP3302 датащи(PDF) 26 Page - Microchip Technology

номер детали MCP3302
подробное описание детали  13-Bit Differential Input, Low Power A/D Converter with SPI Serial Interface
PDF  40 Pages
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производитель  MICROCHIP [Microchip Technology]
домашняя страница  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

MCP3302 датащи(HTML) 26 Page - Microchip Technology

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MCP3302/04
DS21697B-page 26
 2002 Microchip Technology Inc.
FIGURE 7-4:
SPI Communication with the MCP3302/04 using 8-bit segments (Mode 0,0: SCLK
idles low).
FIGURE 7-5:
SPI Communication with the MCP3302/04 using 8-bit segments (Mode 1,1: SCLK
idles high).
1
2
3
4
5
6
7
8
9
10
11
121314
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 Converter
Data is clocked out of
A/D Converter on falling edges
on rising edges of SCLK
Don’t Care
SGL/
DIFF
D0
D1
Start
00
001
X
X
XX
X
DO
XX
XX
XXX
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
X
SB
SB
D2
? = Unknown Bits
? = Unknown Bits
123
4
56
7
8
9
10
11
12
13
14
15
16
CS
SCLK
DIN
17
18
19
20
21
22
23
24
DOUT
Don’t Care
NULL
BIT
B11 B10 B9
B8
B6 B5
B4
B3 B2
B1 B0
HI-Z
000
01
X
X
X
X
X
DO
SGL/
DIFF
X
X
X
XXX
XX
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)
D0
D1
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
SB
X
SB
D2
Don’t Care
X = Don’t Care Bits
? = Unknown Bits



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