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PM0223 bảng dữ liệu(PDF) 79 Page - STMicroelectronics

tên linh kiện PM0223
Giải thích chi tiết về linh kiện  This programming manual provides information for application and system-level software developers
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nhà sản xuất  STMICROELECTRONICS [STMicroelectronics]
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PM0223 bảng dữ liệu(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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