Hello, This timing requirement describes the high and low time of one square clock pulse. It ensures that the clock signal is a flow of equal square shapes, eliminating any arbitrary set of high or low pulses. It is consistent across all clock frequencies. As the max and min are given in the datasheet, we strongly suggest staying with them as anything outside the limits is not guaranteed. The device could possibly not clock the falling edge of the clock and data can be missed. Regards, Cynthia
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