AT32UC3C1512C-AZR Atmel, AT32UC3C1512C-AZR Datasheet - Page 74

• Manufacturer Part Number: AT32UC3C1512C-AZR
• Description: Microcontrollers (MCU) 512KB FL,-40/125oC AUTO
• Manufacturer: Atmel

Specifications of AT32UC3C1512C-AZR

• Lead Free Status / Rohs Status: Details

7.9.4
7.9.4.1
9166BS–AVR-02/11
SPI Timing
Master mode
Maximum SPI Frequency, Slave Input Mode
The maximum SPI slave input frequency is given by the following formula:
Where
on CPOL and NCPHA.
chapter for a description of this clock.
Maximum SPI Frequency, Slave Output Mode
The maximum SPI slave output frequency is given by the following formula:
Where
the SPI master setup time. Please refer to the SPI masterdatasheet for
maximum frequency of the CLK_SPI. Refer to the SPI chapter for a description of this
clock.
tics section for the maximum frequency of the pins.
Figure 7-11. SPI Master Mode With (CPOL= NCPHA= 0) or (CPOL= NCPHA= 1)
f
PINMAX
SPIn
SPIn
SPCK
MISO
MOSI
is the MOSI setup and hold time, USPI7 + USPI8 or USPI10 + USPI11 depending
is the maximum frequency of the SPI pins. Please refer to the I/O Pin Characteris-
is the MISO delay, USPI6 or USPI9 depending on CPOL and NCPHA.
f
SPCKMAX
f
CLKSPI
f
SPCKMAX
SPI2
=
is the maximum frequency of the CLK_SPI. Refer to the SPI
MIN
(
f
---------------------------- - f
CLKSPI
=
MIN
9
SPI0
×
(
f
---------------------------- -
2
CLKSPI
,
PINMAX
9
×
2
,
,
----------- -
SPIn
------------------------------------
SPIn
SPI1
1
)
+
1
t
SETUP
T
SETUP
)
AT32UC3C
.
f
CLKSPI
T
SETUP
is the
is
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