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MCU(8051) 發送 SMBus 給 BQ40z50,沒有 ACK。

Other Parts Discussed in Thread: BQ40Z50

您好,請教一下

我從 MCU(8051) 發送 SMBus 給 BQ40z50,slaveadress:0x16, CMD:0x0D (RelativeStateOfCharge),第一個 slaveadress 0x16 有回 ACK,但是, CMD 0x0D 之後沒有 ACK。waveform 如附件,請問有甚麼要注意的嗎?