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CC2642R-Q1: 为什么复位脚被一直拉低?

Part Number: CC2642R-Q1
Other Parts Discussed in Thread: CC2640R2F, CC1352P, CC2642R

较多的产品在正常使用一段时间后(2个月左右),突然就不上传数据了,故障件返修时发现reset脚被拉低,断开周围器件,确认为CPU自己拉低(引脚根部断开);断开电源后重启,恢复正常;不知什么原因?