AT32UC3C1512C Automotive Atmel Corporation, AT32UC3C1512C Automotive Datasheet - Page 1274

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

Table 40-49. SPI Timing, Slave Mode
Note:
40.9.5
9166C–AVR-08/11
Symbol
SPI6
SPI7
SPI8
SPI9
SPI10
SPI11
SPI12
SPI13
SPI14
SPI15
1. These values are based on simulation and characterization of other AVR microcontrollers manufactured in the same pro-
TWIM/TWIS Timing
cess technology. These values are not covered by test limits in production.
Parameter
SPCK falling to MISO delay
MOSI setup time before SPCK rises
MOSI hold time after SPCK rises
SPCK rising to MISO delay
MOSI setup time before SPCK falls
MOSI hold time after SPCK falls
NPCS setup time before SPCK rises
NPCS hold time after SPCK falls
NPCS setup time before SPCK falls
NPCS hold time after SPCK rises
Maximum SPI Frequency, Slave Input Mode
The maximum SPI slave input frequency is given by the following formula:
Where
CPOL and NCPHA.
ter 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
SPI master setup time. Please refer to the SPI masterdatasheet for
mum frequency of the SPI pins. Please refer to the I/O Pin Characteristics section for the
maximum frequency of the pins.
Figure 40-50
them. Some of these requirements (t
vention. Compliance with the other requirements (t
I2C
, t
HIGH
, and f
SPIn
SPIn
(1)
shows the TWI-bus timing requirements and the compliance of the device with
is the MISO delay, SPI6 or SPI9 depending on CPOL and NCPHA.
is the MOSI setup and hold time, SPI7 + SPI8 or SPI10 + SPI11 depending on
TWCK
) requires user intervention through appropriate programming of the relevant
f
CLKSPI
f
SPCKMAX
is the maximum frequency of the CLK_SPI. Refer to the SPI chap-
f
SPCKMAX
Conditions
capacitor =
r
=
external
and t
40pF
MIN f
=
f
) are met by the device without requiring user inter-
(
MIN f
PINMAX
(
HD-STA
CLKSPI
,
------------------------------------
SPIn
, t
,
SU-STA
Min
----------- -
SPIn
1.5
2.5
3.5
2.5
0
7
5
4
+
1
1
t
SETUP
)
, t
SU-STO
)
t
SETUP
, t
HD-DAT
AT32UC3C
.
Max
f
PINMAX
31
32
, t
SU-DAT-I2C
t
SETUP
is the maxi-
Units
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
, t
is the
1274
LOW-