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MCU 与 BQ78350 通讯 ,发现MCU 在拉高,BQ78350在拉低,导致出现三角波?为什么?如图波形!

Genius 3755 points
Other Parts Discussed in Thread: BQ78350

MCU 与 BQ78350 通讯 ,发现MCU 在拉高,BQ78350在拉低,导致出现三角波?为什么?

我专门写一段程序测试;从机地址改为其他数据波形完全正常,改为BQ78350地址 (SendData(0x16);) ;数据波形就变成三角波了!

已确认:SMBUS  上拉电阻4.7K PCB 走线很近;电源很稳!