ATSAM3S-EK Atmel, ATSAM3S-EK Datasheet - Page 55
![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
- Current page: 55 of 1118
- Download datasheet (24Mb)
10.5.1.1
10.5.1.2
10.5.1.3
10.5.1.4
10.5.1.5
10.5.2
6500C–ATARM–8-Feb-11
Memory system ordering of memory accesses
Normal
Device
Strongly-ordered
Shareable
Execute Never (XN)
The processor can re-order transactions for efficiency, or perform speculative reads.
The processor preserves transaction order relative to other transactions to Device or Strongly-
ordered memory.
The processor preserves transaction order relative to all other transactions.
The different ordering requirements for Device and Strongly-ordered memory mean that the
memory system can buffer a write to Device memory, but must not buffer a write to Strongly-
ordered memory.
The additional memory attributes include.
For a shareable memory region, the memory system provides data synchronization between
bus masters in a system with multiple bus masters, for example, a processor with a DMA
controller.
Strongly-ordered memory is always shareable.
If multiple bus masters can access a non-shareable memory region, software must ensure data
coherency between the bus masters.
Means the processor prevents instruction accesses. Any attempt to fetch an instruction from an
XN region causes a memory management fault exception.
For most memory accesses caused by explicit memory access instructions, the memory system
does not guarantee that the order in which the accesses complete matches the program order of
the instructions, providing this does not affect the behavior of the instruction sequence. Nor-
mally, if correct program execution depends on two memory accesses completing in program
order, software must insert a memory barrier instruction between the memory access instruc-
tions, see
However, the memory system does guarantee some ordering of accesses to Device and
Strongly-ordered memory. For two memory access instructions A1 and A2, if A1 occurs before
A2 in program order, the ordering of the memory accesses caused by two instructions is:
Where:
- Means that the memory system does not guarantee the ordering of the accesses.
Device access, non-shareable
A1
Device access, shareable
Strongly-ordered access
“Software ordering of memory accesses” on page
Normal access
A2
Normal
access
-
-
-
-
Non-shareable
Device access
<
<
-
-
Shareable
SAM3S Preliminary
<
<
-
-
57.
Strongly-
ordered
access
<
<
<
-
55
Related parts for ATSAM3S-EK
Image
Part Number
Description
Manufacturer
Datasheet
Request
R
![ATSAM3S-EK2](/images/manufacturer_photos/0/0/78/atmel_tmb.jpg)
Part Number:
Description:
Development Boards & Kits - ARM EVAL KIT SAM3S8 & SAM3SD8 series
Manufacturer:
Atmel
Datasheet:
![ATSAM3S](/images/no-image3.png)
Part Number:
Description:
AT91 ARM Cortex M3-based Processor
Manufacturer:
ATMEL [ATMEL Corporation]
Datasheet:
![ATSTK600](/photos/9/20/92038/atstk600_tmb.jpg)
Part Number:
Description:
DEV KIT FOR AVR/AVR32
Manufacturer:
Atmel
Datasheet:
![U641B](/images/manufacturer_photos/0/0/79/atmel_corporation_tmb.jpg)
Part Number:
Description:
INTERVAL AND WIPE/WASH WIPER CONTROL IC WITH DELAY
Manufacturer:
ATMEL Corporation
Datasheet:
![U4082B](/images/manufacturer_photos/0/0/79/atmel_corporation_tmb.jpg)
Part Number:
Description:
Low-Voltage Voice-Switched IC for Hands-Free Operation
Manufacturer:
ATMEL Corporation
Datasheet:
![U4089B](/images/manufacturer_photos/0/0/79/atmel_corporation_tmb.jpg)
Part Number:
Description:
MONOLITHIC INTEGRATED FEATUREPHONE CIRCUIT
Manufacturer:
ATMEL Corporation
Datasheet:
![U4255BM-M](/images/manufacturer_photos/0/0/79/atmel_corporation_tmb.jpg)
Part Number:
Description:
AM-FM Receiver IC U4255BM-M
Manufacturer:
ATMEL Corporation
Datasheet:
![U4089B-P](/images/manufacturer_photos/0/0/79/atmel_corporation_tmb.jpg)
Part Number:
Description:
Monolithic Integrated Feature Phone Circuit
Manufacturer:
ATMEL Corporation
Datasheet:
![TDA4470](/images/manufacturer_photos/0/0/79/atmel_corporation_tmb.jpg)
Part Number:
Description:
Multistandard Video-IF and Quasi Parallel Sound Processing
Manufacturer:
ATMEL Corporation
Datasheet:
![ATF22V10B-25PC](/images/manufacturer_photos/0/0/79/atmel_corporation_tmb.jpg)
Part Number:
Description:
High-performance EE PLD
Manufacturer:
ATMEL Corporation
Datasheet:
![AT89C51ED2-IM](/images/manufacturer_photos/0/0/79/atmel_corporation_tmb.jpg)
Part Number:
Description:
8-bit Flash Microcontroller
Manufacturer:
ATMEL Corporation
Datasheet:
![AT24C01](/images/manufacturer_photos/0/0/79/atmel_corporation_tmb.jpg)
Part Number:
Description:
2-Wire Serial EEPROM
Manufacturer:
ATMEL Corporation
Datasheet: