AT91SAM9G45-EKES Atmel, AT91SAM9G45-EKES Datasheet - Page 426

• Manufacturer Part Number: AT91SAM9G45-EKES
• Description: KIT EVAL FOR AT91SAM9G45
• Manufacturer: Atmel
• Series: AT91SAM Smart ARMr
• Type: MCUr

Specifications of AT91SAM9G45-EKES

• Contents: Board
• Processor To Be Evaluated: SAM9G45
• Data Bus Width: 32 bit
• Interface Type: I2C, SPI, UART
• Maximum Operating Temperature: + 50 C
• Minimum Operating Temperature: - 10 C
• Operating Supply Voltage: 1.8 V to 3.3 V
• For Use With/related Products: AT91SAM9G45
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: Q4626953

Table 29-4.
Figure 29-4. SPI Transfer Format (NCPHA = 1, 8 bits per transfer)
426
SPCK cycle (for reference)
(from master)
SPI Mode
(from slave)
(CPOL = 0)
(CPOL = 1)
(to slave)
AT91SAM9G45
0
1
2
3
SPCK
SPCK
MOSI
MISO
NSS
SPI Bus Protocol Mode
* Not defined, but normally MSB of previous character received.
CPOL
Table 29-4
Figure 29-4
0
0
1
1
MSB
1
MSB
NCPHA
shows the four modes and corresponding parameter settings.
and
1
0
1
0
2
Figure 29-5
6
6
3
Shift SPCK Edge
5
5
show examples of data transfers.
Falling
Rising
Rising
Falling
4
4
4
5
3
3
Capture SPCK Edge
6
6
2
2
Rising
Falling
Falling
Rising
7
1
1
8
LSB
LSB
SPCK Inactive Level
6438F–ATARM–21-Jun-10
High
High
Low
Low
*