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麻烦TI员工帮忙回答一下问题

Other Parts Discussed in Thread: BQ25120A, BQ25120

都是关于BQ25120A的:

1. MR这个引脚直接作为复位按钮使用吗?用它来触发RESET信号输出有什么作用?具体的应用场景是怎样的?发送RESET信号最短只能为4s吗?

2. 在外部电源接入时(如USB插入并供电),从BQ25120能否获取该信息?是否能够通过INT引脚以中断的形式获得?