ATSAM3S-EK Atmel, ATSAM3S-EK Datasheet - Page 102

• 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

10.12.9
10.12.9.1
10.12.9.2
10.12.9.3
10.12.9.4
102
CLREX
SAM3S Preliminary
CLREX
Syntax
Operation
Condition flags
Examples
Clear Exclusive.
where:
cond
Use CLREX to make the next STREX, STREXB, or STREXH instruction write 1 to its destination
register and fail to perform the store. It is useful in exception handler code to force the failure of
the store exclusive if the exception occurs between a load exclusive instruction and the match-
ing store exclusive instruction in a synchronization operation.
See
These instructions do not change the flags.
CLREX{cond}
“Synchronization primitives” on page 61
is an optional condition code, see
for more information.
“Conditional execution” on page
6500C–ATARM–8-Feb-11
84.