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数据搜索系统，热门电子元器件搜索 |
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数据搜索系统，热门电子元器件搜索 |
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L99PM72GXP 数据表(PDF) 27 Page - STMicroelectronics |
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L99PM72GXP 数据表(HTML) 27 Page - STMicroelectronics |
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27 / 129 page  DocID024767 Rev 4 27/129 L99PM72GXP Detailed description 128 Figure 13. Change watchdog timing within long open window Figure 14. Change watchdog timing within window mode If the device is in Fail_safe mode, the Control Registers are locked for writing. To change the watchdog timing out of Fail_safe mode, first the Fail_safe condition must be solved, respective confirmed from the microcontroller. Afterwards the new watchdog timing can be programmed using the sequence from Figure 15. Since the actions to remove, a Fail_safe condition can differ from the root cause of the fail safe the following diagram shows the general procedure how to change the watchdog timing out of Fail_safe mode. Figure 16 shows the procedure to change watchdog timing with a previous watchdog failure, since this is a special Fail_safe scenario. |
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