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L9908 датащи(PDF) 133 Page - STMicroelectronics

номер детали L9908
подробное описание детали  Automotive 3-Phase motor gate driver unit
PDF  153 Pages
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производитель  STMICROELECTRONICS [STMicroelectronics]
домашняя страница  http://www.st.com
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L9908 датащи(HTML) 133 Page - STMicroelectronics

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Figure 87. Watchdog command order sequence
In case of a wrong WDT data command (command different from the expected sequence order), the watchdog
word fail counter is incremented by 1. With the next valid watchdog data command the fail counter is decreased
by 1. If the failure counter reaches the failure limit defined in the SPI register WDT_FAIL_COUNT_CFG the
watchdog fail flag WDT_DATA_fail is set and L9908 is sent to safe state.
The fail counter limit can be programmed by the following SPI bit set:
Table 149. Watchdog configuration table for WDT data fail counter
WDT_FAIL_COUNT_CFG1
WDT_FAIL_COUNT_CFG0
Description
0
0
1
0
1
1
1
0
2
1
1
3 (Default)
The information about the number of encountered WDT data failures is stored in the dedicated SPI register
WDT_FAIL_COUNT_STATUS.
L9908
Window Watchdog Timer (WTD)
DS13546 - Rev 3
page 133/153



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