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PM0223 データシート(PDF) 79 Page - STMicroelectronics

部品番号 PM0223
部品情報  This programming manual provides information for application and system-level software developers
PDF  110 Pages
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メーカー  STMICROELECTRONICS [STMicroelectronics]
ホームページ  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

PM0223 データシート(HTML) 79 Page - STMicroelectronics

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PM0223
The STM32L0 Cortex-M0+ Instruction Set
80
3.7.11
WFE
Wait For Event.
Syntax
WFE
Operation
If the event register is 0, WFE suspends execution until one of the following events occurs:
•
An exception, unless masked by the exception mask registers or the current priority
level.
•
An exception enters the Pending state, if SEVONPEND in the System Control Register is
set.
•
A Debug Entry request, if debug is enabled.
•
An event signaled by a peripheral or another processor in a multiprocessor system
using the SEV instruction.
If the event register is 1, WFE clears it to 0 and completes immediately.
For more information see 2.5: Power management on page 33.
Note:
WFE
is intended for power saving only. When writing software assume that WFE might
behave as NOP.
Restrictions
There are no restrictions.
Condition flags
This instruction does not change the flags.
Examples
WFE
; Wait for event



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