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BQ20Z45应用问题

Other Parts Discussed in Thread: BQ20Z45

BQ20Z45 UNSEAL时,写的过程是:写0X16、写0x00、写1st UNSEALKEY、PEC;写0X16、写0x00、写2st UNSEALKEY、PEC。还是写0X16、写0x00、写1st UNSEALKEY、2st UNSEALKEY、PEC?

  • 这个写入过程的理解你可以完全按照SMBUS通信协议的格式来理解,因为BQ20Z45本身通信方式就是SMBUS的。你写入过程就是个写Word带PEC的过程,写完低高字节后在给PEC,然后是ACK及P。PEC产生是有BQ20Z45里的HPE位来控制。