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PCA9548A: PCA9548A Address change

Evan Wang
Expert 4670 points
Part Number: PCA9548A

Hi all,

Since the address of PCA9548A is hardware decided.

Our customer is asking that could they change the address dynamically after power on or reset?

Will it have any problem?

 

Thank you for your help.

  • 0
    Guru 243820 points

    Section 8.5.1 of the datasheet says:

    The address inputs (A0–A2) of the slave device must not be changed between the start and the stop conditions.

    This implies that you can change them when there is no active I²C transaction.