AT32UC3L064_11 ATMEL [ATMEL Corporation], AT32UC3L064_11 Datasheet - Page 70
AT32UC3L064_11
Manufacturer Part Number
AT32UC3L064_11
Description
32-bit Atmel AVR Microcontroller
Manufacturer
ATMEL [ATMEL Corporation]
Datasheet
1.AT32UC3L064_11.pdf
(111 pages)
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7.9.5
Table 7-42.
32099HS–12/2011
t
t
t
t
t
t
r
f
HD-STA
SU-STA
SU-STO
HD-DAT
Symbol
TWIM/TWIS Timing
TWCK and TWD rise time
TWCK and TWD fall time
(Repeated) START hold time
(Repeated) START set-up time
STOP set-up time
Data hold time
TWI-Bus Timing Requirements
Parameter
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 master datasheet for
imum frequency of the SPI pins. Please refer to the I/O Pin Characteristics section for the
maximum frequency of the pins.
Figure 7-42
them. Some of these requirements (t
vention. Compliance with the other requirements (t
TWI
TWIM and TWIS user interface registers. Please refer to the TWIM and TWIS sections for more
information.
, t
HIGH
SPIn
SPIn
, and f
shows the TWI-bus timing requirements and the compliance of the device with
Standard
Fast
Standard
Fast
Standard
Fast
Standard
Fast
Standard
Fast
Standard
Fast
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
Mode
(1)
) requires user intervention through appropriate programming of the relevant
f
CLKSPI
(1)
Requirement
f
SPCKMAX
is the maximum frequency of the CLK_SPI. Refer to the SPI chap-
0.3
0.6
4.7
0.6
4.0
0.6
f
4
SPCKMAX
(2)
20 + 0.1C
20 + 0.1C
Minimum
r
=
and t
MIN f
-
-
=
f
) are met by the device without requiring user inter-
b
b
(
MIN f
Device
PINMAX
4t
2t
t
t
clkpb
clkpb
clkpb
clkpb
(
HD-STA
CLKSPI
,
------------------------------------
SPIn
, t
AT32UC3L016/32/64
,
SU-STA
----------- -
SPIn
Requirement
+
1
1
t
SETUP
3.45
)
0.9
, t
SU-STO
()
()
)
Maximum
t
SETUP
1000
, t
300
300
300
-
-
-
HD-DAT
15t
.
f
prescaled
PINMAX
Device
, t
SU-DAT-TWI
t
SETUP
+ t
is the max-
clkpb
, t
is the
Unit
LOW-
μs
μs
μs
μs
ns
ns
70
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