ATSAM3U-EK Atmel, ATSAM3U-EK Datasheet - Page 156

• Manufacturer Part Number: ATSAM3U-EK
• Description: KIT EVAL FOR AT91SAM3U CORTEX
• Manufacturer: Atmel
• Type: MCUr

Specifications of ATSAM3U-EK

• Contents: Board
• Processor To Be Evaluated: SAM3U
• Data Bus Width: 32 bit
• Interface Type: RS-232, USB
• Operating Supply Voltage: 3 V
• Silicon Manufacturer: Atmel
• Core Architecture: ARM
• Core Sub-architecture: Cortex - M3
• Silicon Core Number: SAM3U4E
• Silicon Family Name: SAM3U
• Kit Contents: Board CD Docs
• Rohs Compliant: Yes
• For Use With/related Products: AT91SAM3U
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

13.17.3
13.17.3.1
13.17.3.2
13.17.3.3
13.17.3.4
156
DMB
SAM3U Series
DMB
Syntax
Operation
Condition flags
Examples
; Data Memory Barrier
Data Memory Barrier.
where:
cond
DMB acts as a data memory barrier. It ensures that all explicit memory accesses that appear, in
program order, before the DMB instruction are completed before any explicit memory accesses
that appear, in program order, after the DMB instruction. DMB does not affect the ordering or
execution of instructions that do not access memory.
This instruction does not change the flags.
DMB{cond}
is an optional condition code, see
“Conditional execution” on page
6430D–ATARM–25-Mar-11
100.