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STM8S 데이터시트(PDF) 76 Page - STMicroelectronics

부품명 STM8S
상세설명  STM8S Series and STM8AF Series 8-bit microcontrollers
PDF  467 Pages
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제조업체  STMICROELECTRONICS [STMicroelectronics]
홈페이지  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

STM8S 데이터시트(HTML) 76 Page - STMicroelectronics

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Reset (RST)
RM0016
76/467
DocID14587 Rev 14
8.3.3
Software reset
The application software can trigger reset by clearing bit T6 in the WWDG_CR register.
Refer to Section 15: Window watchdog (WWDG).
8.3.4
SWIM reset
An external device connected to the SWIM interface can request the SWIM block to
generate an MCU reset.
8.3.5
Illegal opcode reset
In order to provide enhanced robustness to the device against unexpected behavior, a
system of illegal opcode detection is implemented. If a code to be executed does not
correspond to any opcode or prebyte value, a reset is generated. This, combined with the
Watchdog, allows recovery from an unexpected fault or interference.
Note:
A valid prebyte associated with a valid opcode forming an unauthorized combination does
not generate a reset.
8.3.6
EMC reset
To protect the application against spurious write access or system hang-up, possibly caused
by electromagnetic disturbance, the most critical registers are implemented as two bitfields
that must contain complementary values. Mismatches are automatically detected by this
mechanism, triggering an EMC reset and allowing the application to cleanly recover normal
operations.



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