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TPS3823: TPS3823-33DBVR 监控和复位芯片

Part Number: TPS3823
Other Parts Discussed in Thread: TPS3828, TPS3820, TPS3824

请问一下TPS3823-33DBVR监控和复位芯片的看门狗检测引脚WDI,当不需要看门狗检测复位功能时,这个WDI引脚是悬空?还是通过一个1K的电阻到地? 目前只需要检测VDD跟手动复位的功能。