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BQ40Z80: When switch from BQ34Z100 to BQ40Z80, any modification need to be implemented to the communication?

Jayden Li
Expert 3285 points
Part Number: BQ40Z80
Other Parts Discussed in Thread: BQ34Z100,

Hi team,

My customer is considering to switch from BQ34Z100 to BQ40Z80, but they don't want to change anything about the communication, including the hardware and software. I noticed the interface is different, one is SMBus and another is I2C, so I think it is impossible, but no sure, please help give me your comments, thanks!

Sincerely,

Jayden Li

  • 0
    TI__Guru 57697 points

    Hello Jayden,

    The communication interface is I2C on BQ34Z100. BQ40Z80 uses SMBus. Both protocols are similar and most I2C hardware can support SMBus.

    However, the software will need to change to support SMBus. The commands are also different.