at75c220 ATMEL Corporation, at75c220 Datasheet - Page 126
at75c220
Manufacturer Part Number
at75c220
Description
Smart Internet Appliance Processor Siap
Manufacturer
ATMEL Corporation
Datasheet
1.AT75C220.pdf
(144 pages)
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Data Transfer
Figure 31, Figure 32 and Figure 33 show examples of data transfers.
Figure 31. SPI Transfer Format (NPCHA Equals One, Eight Bits per Transfer)
Figure 32. SPI Transfer Format (NCPHA Equals Zero, Eight Bits per Transfer)
126
SPCK Cycle (for reference)
SPCK Cycle (for reference)
NPCSS (to slave)
NPCSS (to slave)
(from master)
(from master)
(from slave)
(from slave)
(CPOL=0)
(CPOL=1)
(CPOL=0)
(CPOL=1)
SPCK
SPCK
SPCK
SPCK
MOSI
MISO
MOSI
MISO
X
AT75C220
MSB
1
1
MSB
MSB
MSB
2
2
6
6
6
6
3
3
5
5
5
5
4
4
4
4
4
4
5
5
3
3
3
3
6
6
6
6
2
2
2
2
7
7
1
1
1
1
8
8
LSB
LSB
LSB
LSB
X
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