ATSAM3S-EK Atmel, ATSAM3S-EK Datasheet - Page 1070
![no-image](/images/manufacturer_photos/0/0/78/atmel_sml.jpg)
ATSAM3S-EK
Manufacturer Part Number
ATSAM3S-EK
Description
KIT EVAL FOR ATSAM3S4C
Manufacturer
Atmel
Series
SAM3Sr
Type
MCUr
Specifications of ATSAM3S-EK
Contents
Board, Cables, Power Supply
Silicon Manufacturer
Atmel
Core Architecture
ARM
Core Sub-architecture
Cortex-M3
Kit Contents
Board
Features
TFT Colour LCD Display, SD/MMC Interface
Svhc
No SVHC (15-Dec-2010)
Rohs Compliant
Yes
For Use With/related Products
*
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
ATSAM3S-EK
Manufacturer:
Atmel
Quantity:
135
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41.11.3.1
1070
Master Write Mode
Master Read Mode
Slave Read Mode
Slave Write Mode
SAM3S Preliminary
Maximum SPI Frequency
Figure 41-16. SPI Slave Mode with (CPOL = NCPHA = 0) or (CPOL= NCPHA= 1)
The following formulas give maximum SPI frequency in Master read and write modes and in
Slave read and write modes.
NPCS0
SPCK
MISO
MOSI
The SPI is only sending data to a slave device such as an LCD, for example. The limit is
given by SPI
speed (see
pad.
T
DataFlash (AT45DB642D), T
In the formula above, F
In slave mode, SPCK is the input clock for the SPI. The max SPCK frequency is given by
setup and hold timings SPI
the pad limit, the limit in slave read mode is given by SPCK pad.
For 3.3V I/O domain and SPI6, F
before sampling data.
f
valid
SPCK
f
SPCK
is the slave time response to output data after detecting an SPCK edge. For Atmel SPI
Max
Max
Section 41.11.2 “I/O
=
2
=
(or SPI
SPI
--------------------------------------------------------
SPI
--------------------------------------------------------------------------------------- -
2x S ( PI
14
0
(
orSPI
5
) timing. Since it gives a maximum frequency above the maximum pad
6max
SPCK
1
3
SPI
(
)
Max = 33.0 MHz @ VDDIO = 3.3V.
7
orSPI
/SPI
+
valid
9
T
1
valid
Characteristics”), the max SPI frequency is the one from the
(or T
8
SPCK
(or SPI
9max
SPI
Max = 25 MHz. T
v
10
) is 12 ns Max.
)
+
10
T
/SPI
setup
11
SPI
)
). Since this gives a frequency well above
11
setup
is the setup time from the master
6500C–ATARM–8-Feb-11
SPI
15
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