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Tag: clock to Q delay

Sequential Circuits

Q7: Maximum Frequency

Q- Find the maximum clock frequency of the following circuit and specifications of the flip-flop are as T (setup) = 5ns T (hold time) = 8ns T (CLK to Q) = 2ns and delay of other components is T (buf) = 2ns,   T (AND) = 4 ns, T (OR) = 4 ns,     T (NOT) = […]

Posted on June 27, 2022June 27, 2022 Author admin Comments(5,941)
Sequential Circuits

Q6: Maximum Frequency

Q- Find the maximum clock frequency of the following circuit and specifications of the flip-flop are as T (setup) = 5ns T (hold time) = 4ns             T (CLK to Q) = 9ns and maximum delay of the combinational circuit is T (c-delay) = 13 ns and delay of buffer is T (buf) = 2ns. Delay of […]

Posted on June 27, 2022June 27, 2022 Author admin Comments(5,901)
Sequential Circuits

Q5: Maximum Frequency

Q- Find the maximum clock frequency of the following circuit and specifications of the different flip-flop are as T1 (setup) = 5ns T1 (hold time) = 4ns T1 (CLK to Q) = 9ns, T2 (setup) = 4ns T2 (hold time) = 3ns T2 (CLK to Q) = 7ns  T3 (setup) = 4ns T3 (hold time) […]

Posted on June 27, 2022June 27, 2022 Author admin Comments(6,864)
Sequential Circuits

Q2: Maximum Frequency

Q- Find the maximum clock frequency of the following circuit if specifications of the different flip-flop are as T1 (setup) = 5ns T1 (hold time) = 4ns T1 (CLK to Q) = 9ns, T2 (setup) = 4ns T2 (hold time) = 3ns T2 (CLK to Q) = 7ns  T3 (setup) = 4ns T3 (hold time) […]

Posted on June 27, 2022June 27, 2022 Author admin Comments(3,330)
Sequential Circuits

Q1: Maximum Frequency

Q- Find the maximum clock frequency of the above circuit if specifications of the flip-flop are as T (setup) = 5ns     T (hold time) = 4ns             T (CLK to Q) = 9ns and maximum delay of the combinational circuit is T (c-delay) = 13 ns. There is a clock skew of +3ns for 2nd FF in […]

Posted on June 27, 2022June 27, 2022 Author admin Comments(3,494)
Sequential Circuits

Q4: Maximum Frequency

Q- Find the maximum clock frequency of the following circuit and specifications of the different flip-flop are as T1 (setup) = 5ns T1 (hold time) = 4ns T1 (CLK to Q) = 9ns, T2 (setup) = 4ns T2 (hold time) = 3ns T2 (CLK to Q) = 7ns  T3 (setup) = 4ns T3 (hold time) […]

Posted on June 27, 2022June 27, 2022 Author admin Comments(3,140)
Sequential Circuits

Q3: Maximum Frequency

Q- Find the maximum clock frequency of the following circuit and specifications of the flip-flop are as T (setup) = 5ns T (hold time) = 4ns             T (CLK to Q) = 9ns and maximum delay of the combinational circuit is T (c-delay) = 13 ns and delay of buffer is T (buf) = 2ns. Ans: There is […]

Posted on June 27, 2022June 27, 2022 Author admin Comments(2,908)
Sequential Circuits

Q2: Maximum frequency

Q- Find the maximum clock frequency of the following circuit and specifications of the flip-flop are as T (setup) = 5ns T (hold time) = 4ns             T (CLK to Q) = 9ns and maximum delay of the combinational circuit is T (c-delay) = 13 ns Ans:  As input to first flip-flop is directly available and […]

Posted on June 27, 2022June 27, 2022 Author admin Comments(3,353)
Sequential Circuits

Q1: Timing Diagram

Q- We are given a D FF which is used as a divide by 2 circuit and specifications of the flip-flop are as: T (setup) = 5ns  T (hold time) = 4ns          T (CLK to Q) = 9ns and circuit is as: Find Maximum frequency. Ans: I’ll recommend drawing the 1st edge of clock and then to […]

Posted on June 27, 2022June 27, 2022 Author admin Comments(3,001)
Sequential Circuits

Maximum Frequency of the clock signal

To achieve the maximum frequency of the clock signal we can assume to start SETUP time immediately after the CLK to Q delay is finished.               This would mean that we can have the next positive edge (CLK to Q delay + SETUP time) after the previous positive edge. And with 50% duty cycle, falling edge […]

Posted on June 27, 2022June 27, 2022 Author admin Comments(2,809)

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