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TCA9548A: Accessing multiple channel slave data at time possible?

Sampat Kumar
Prodigy 80 points
Part Number: TCA9548A

Tool/software:

In TCA9548APWR there are total 8 I2C outputs channels are there. We configured channels with 

Channel-0 (CH0)  have 6 slaves
Channel-1 (CH1) have 6 slaves
Channel-2 (CH2) have 6 slaves
Channel-3 (CH3) have 6 slaves and same for all 8 channels

Is it possible to read the data of  all the slaves, which is connected in different channel of   CH0, CH1, CH2 and  CH3 at a time (simultaneously)??

  • 0
    TI__Genius 17745 points

    Hello Sampat,

    Yes, all the switches can be closed simultaneously and the data can be read. You do need to make sure that there are no address conflicts with the salves. 

    Also, having all the channels closed will spike up the capacitance. Standard I2C has a bus capacitance limit of 400pF.

    Thanks,

    Nir