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【求助】bq34z100单片机通讯没有ack

Other Parts Discussed in Thread: BQ34Z100, EV2400

如图所示,这是我用逻辑分析仪得到的波形,我用单片机LPC1114做I2C通讯,bq34z100总是得不到ack,我先发0xab,没有ack,在发0x08也没有。

硬件检测Vreg=3.6V, Vreg25=2.5V,上拉电阻为10k,貌似硬件好像也没有什么错误。

手头上也没有ev2300或ev2400,请问各位究竟是什么原因?