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BQ40Z50-R1: 有没有固定的寄存器值可以用来做芯片识别的

Part Number: BQ40Z50-R1

请问一下 BQ40Z50-R1 这个IC有哪个寄存器是只读寄存器,值只是只读的且不会变化,类似芯片ID的.