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ADS1299: How do I know how many clock cycle in one second?

Yap JiunnHuei
Prodigy 80 points
Other Parts Discussed in Thread: ADS1299

Hi TI,

Referring to the ADS1299 datasheet (p35), we need to delay 4 tclk (master clock cycle) for each of the SPI command send.

I am using an external fclk = 2.048MHz for the ADS1299.

But, how can I get to know the actual number of clock cycle for the master clock within 1 second? 

Regards,

JH

  • 0
    TI__Guru 66346 points

    Hi JiunnHeui,

    I'm not sure if I understand what you are asking by "clock cycles within 1 second." The timing requirement that you found is the minimum amount of time to wait following a WAKEUP or START command. This time is equal to 4 master clock cycles (i.e. periods).

    For a master clock of 2.048MHz, the period is 488.3 ns and 4*tCLK = 4*(488.3 ns) = 1.953 us.

    Please let me know if this is not what you were asking.

    Best Regards,