Obligation cycle of clock

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Obligation cycle of clock

Obligation cycle of clock

Obligation cycle of clock

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Obligation cycle of clock

2020-05-12 |

Duty cycle: Duty cycle of the clock is described since the portion of the time period of clock through which the clock is in active condition. Duty cycle of the clock is normally expressed to be a share. For instance, determine below exhibits a clock having an lively state of '1' stays very low for two ns during its period of 10 ns. It really is, as a result, explained to obtain a responsibility cycle of 20%.How duty cycle impacts timing: Obligation cycle of clock plays a major function in timing closure of patterns. We must take into consideration next aspects related to duty cycle variation though timing.

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50 percent cycle timing paths: If you will find the two positive and adverse edge-triggered flip-flops in the style and design, obligation cycle in the clock matters a great deal. By way of example, if we've a clock of 100 MHz with 20% obligation cycle; For any timing route from optimistic edge-triggered flip-flop to adverse edge-triggered flip-flop, we get only two ns for setup timing for positive-to-negative path and 8 ns for negative-to-positive route when compared to ten ns for any full cycle route. However, in the event the same clock experienced obligation cycle of 50%, we'd have gotten five ns for your exact fifty percent cycle timng path.

Bare minimum pulse width prerequisites: At large frequencies, duty cycle matters lots. For instance, every single sequential component has need of minimum pulse width that should achieve it. If your duty cycle of your clock will not be close to 50%, we have been minimal in delivering superior frequency even when we've been capable of meeting timing at even increased frequencies. Enable us just take an illustration. In case the bare minimum pulse width necessity of the flip-flop is five hundred ps, then with 50% obligation cycle clock, we can easily make use of a clock of one GHz (one ns clock time period). But when we use a clock of duty cycle of 20%, we can not utilize a clock greater than four hundred MHz.

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Obligation cycle of clock