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MCT8329A: Time to write register setting on registers

Shunsuke Yamamoto
Expert 7651 points
Part Number: MCT8329A

Hi team,

How long does it take to write the register setting on registers of MCT8329A?

Best regards,

Shunsuke Yamamoto

  • 0
    TI__Mastermind 18981 points

    Hi Yamamoto-san, 

    Today is a US holiday, so many of our team members are out of office currently, returning later this week - please anticipate a delayed response 

    Best Regards, 
    Andrew 

  • +1
    TI__Intellectual 1240 points

    Hi Yamamoto-san,

    Assuming you use the fastest specified I2C SCL frequency of 400 kHz, writing to a register follows the following sequence from the datasheet:

    The whole data word, without CRC, is 8 bytes, each followed by an ACK bit, totaling 72 bits, which corresponds to 72 clock cycles. For a 400 kHz clock, this comes out to 0.18 ms to write. However, there will most likely be other delays, so each transaction might be more like ~0.3 ms.

    All of the information about I2C for this device can be found in Section 7.6.2 of the datasheet.

    Best,

    Hong