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L9908 Datasheet(PDF) 134 Page - STMicroelectronics

Part # L9908
Description  Automotive 3-Phase motor gate driver unit
PDF  153 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

L9908 Datasheet(HTML) 134 Page - STMicroelectronics

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Figure 88. WDT Operation – Word sequence failure
In case of failure (WDT_OVF_fail =1 or WDT_DATA_fail =1) the WDT can be reset by setting to10 the SPI
register command WDT_RESET.
Table 150. Watchdog RESET bits
WDT_RST1
WDT_RST0
Description
0
0
NO Reset
0
1
NO Reset (Default)
1
0
Reset
1
1
NO Reset
Note:
This command is processed by the logic only if a failure is detected (WDT_OVF_fail = 1 or WDT_DATA_fail = 1).
The WDT_RESET doesn’t reset the WDT_EN bit but only the error flag: µC needs to refresh the WDT properly
afterwards.
L9908
Window Watchdog Timer (WTD)
DS13546 - Rev 3
page 134/153



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