AT32UC3C1512C Automotive Atmel Corporation, AT32UC3C1512C Automotive Datasheet - Page 1269

• Manufacturer Part Number: AT32UC3C1512C Automotive
• Manufacturer: Atmel Corporation

40.9.3.2
9166C–AVR-08/11
Slave mode
Maximum SPI Frequency, Master Output
The maximum SPI master output frequency is given by the following formula:
Where
the maximum frequency of the SPI pins. Please refer to the I/O Pin Characteristics section for
the maximum frequency of the pins.
to the SPI chapter for a description of this clock.
Maximum SPI Frequency, Master Input
The maximum SPI master input frequency is given by the following formula:
Where
on CPOL and NCPHA.
datasheet for
chapter for a description of this clock.
Figure 40-8. USART in SPI Slave Mode With (CPOL= 0 and CPHA= 1) or (CPOL= 1 and
SPIn
SPIn
is the MOSI delay, USPI2 or USPI5 depending on CPOL and NCPHA.
T
CPHA= 0)
is the MISO setup and hold time, USPI0 + USPI1 or USPI3 + USPI4 depending
VALID
SPCK
MISO
MOSI
.
f
CLKSPI
T
VALID
f
f
SPCKMAX
SPCKMAX
is the maximum frequency of the CLK_SPI. Refer to the SPI
is the SPI slave response time. Please refer to the SPI slave
USPI6
=
=
f
CLKSPI
MIN f
MIN
USPI7
(
(
----------------------------------- -
SPIn
PINMAX
is the maximum frequency of the CLK_SPI. Refer
+
1
t
USPI8
,
VALID
----------- -
SPIn
1
,
,
f
---------------------------- -
f
---------------------------- -
CLKSPI
CLKSPI
9
9
×
×
2
2
)
)
AT32UC3C
f
PINMAX
1269
is