mcp3208t-ci-sl Microchip Technology Inc., mcp3208t-ci-sl Datasheet - Page 18

• Manufacturer Part Number: mcp3208t-ci-sl
• Description: 2.7v 4-channel/8-channel 12-bit A/d Converters With Spi Serial Interface
• Manufacturer: Microchip Technology Inc.

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