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ST72325AR7-Auto bảng dữ liệu(PDF) 53 Page - STMicroelectronics

tên linh kiện ST72325AR7-Auto
Giải thích chi tiết về linh kiện  SCI asynchronous serial interface
PDF  243 Pages
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nhà sản xuất  STMICROELECTRONICS [STMicroelectronics]
Trang chủ  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

ST72325AR7-Auto bảng dữ liệu(HTML) 53 Page - STMicroelectronics

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Obsolete
Product(s)
- Obsolete
Product(s)
ST72325xxx-Auto
Supply, reset and clock management
Doc ID 13770 Rev 3
53/243
Application notes
The LVDRF flag is not cleared when another RESET type occurs (external or watchdog); the
LVDRF flag remains set to keep trace of the original failure.
In this case, software can detect a watchdog reset but cannot detect an external reset.
Caution:
When the LVD is not activated with the associated option byte, the WDGRF flag cannot be
used in the application.
0
WDGRF
Watchdog reset flag
This bit indicates that the last Reset was generated by the Watchdog peripheral. It
is set by hardware (watchdog reset) and cleared by software (writing zero) or an
LVD Reset (to ensure a stable cleared state of the WDGRF flag when CPU starts).
Combined with the LVDRF flag information, the flag description is given in
Table 15.
Table 15.
Reset source flags
Reset sources
LVDRF
WDGRF
External RESET pin
0
0
Watchdog
0
1
LVD
1
X
Table 14.
SICSR description (continued)
Bit
Name
Function



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