AT32UC3C2512C Automotive Atmel Corporation, AT32UC3C2512C Automotive Datasheet - Page 75

• Manufacturer Part Number: AT32UC3C2512C Automotive
• Manufacturer: Atmel Corporation

Table 7-48.
Note:
9166CS–AVR-08/11
Symbol
SPI0
SPI1
SPI2
SPI3
SPI4
SPI5
1. These values are based on simulation and characterization of other AVR microcontrollers manufactured in the same pro-
cess technology. These values are not covered by test limits in production.
SPI Timing, Master Mode
Parameter
MISO setup time before SPCK rises
MISO hold time after SPCK rises
SPCK rising to MOSI delay
MISO setup time before SPCK falls
MISO hold time after SPCK falls
SPCK falling to MOSI delay
Figure 7-12. SPI Master Mode With (CPOL= 0 and NCPHA= 1) or (CPOL= 1 and NCPHA= 0)
Maximum SPI Frequency, Master Output
The maximum SPI master output frequency is given by the following formula:
Where
maximum frequency of the SPI pins. Please refer to the I/O Pin Characteristics section for the
maximum frequency of the pins.
Maximum SPI Frequency, Master Input
The maximum SPI master input frequency is given by the following formula:
Where
CPOL and NCPHA.
datasheet for
SPIn
SPIn
SPCK
MISO
MOSI
(1)
is the MOSI delay, SPI2 or SPI5 depending on CPOL and NCPHA.
is the MISO setup and hold time, SPI0 + SPI1 or SPI3 + SPI4 depending on
t
VALID
.
t
VALID
SPI5
is the SPI slave response time. Please refer to the SPI slave
f
SPCKMAX
f
SPCKMAX
Conditions
capacitor =
external
40pF
=
MIN f
SPI3
=
----------------------------------- -
SPIn
(
PINMAX
30.5 + (t
30.5+ (t
+
1
t
VALID
,
Min
----------- -
SPIn
CLK_SPI
0
0
CLK_SPI
SPI4
1
)
)/2
)/2
AT32UC3C
Max
11.5
11.5
f
PINMAX
Units
ns
ns
ns
ns
ns
ns
is the
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