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Digital Integrated Circuits© Prentice Hall 1995 Sequential Logic SEQUENTIAL LOGIC.

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Presentation on theme: "Digital Integrated Circuits© Prentice Hall 1995 Sequential Logic SEQUENTIAL LOGIC."— Presentation transcript:

1 Digital Integrated Circuits© Prentice Hall 1995 Sequential Logic SEQUENTIAL LOGIC

2 Digital Integrated Circuits© Prentice Hall 1995 Sequential Logic

3 Digital Integrated Circuits© Prentice Hall 1995 Sequential Logic Positive Feedback: Bi-Stability

4 Digital Integrated Circuits© Prentice Hall 1995 Sequential Logic Meta-Stability Gain should be larger than 1 in the transition region

5 Digital Integrated Circuits© Prentice Hall 1995 Sequential Logic SR-Flip Flop Q S R Q S R Q Q 1 0 1 0 1 1 0 0 Q 1 0 1 Q 0 1 1 Q Q

6 Digital Integrated Circuits© Prentice Hall 1995 Sequential Logic JK- Flip Flop

7 Digital Integrated Circuits© Prentice Hall 1995 Sequential Logic Other Flip-Flops

8 Digital Integrated Circuits© Prentice Hall 1995 Sequential Logic Race Problem

9 Digital Integrated Circuits© Prentice Hall 1995 Sequential Logic Master-Slave Flip-Flop

10 Digital Integrated Circuits© Prentice Hall 1995 Sequential Logic Propagation Delay Based Edge-Triggered

11 Digital Integrated Circuits© Prentice Hall 1995 Sequential Logic Edge Triggered Flip-Flop

12 Digital Integrated Circuits© Prentice Hall 1995 Sequential Logic Flip-Flop: Timing Definitions

13 Digital Integrated Circuits© Prentice Hall 1995 Sequential Logic Maximum Clock Frequency

14 Digital Integrated Circuits© Prentice Hall 1995 Sequential Logic CMOS Clocked SR- FlipFlop

15 Digital Integrated Circuits© Prentice Hall 1995 Sequential Logic Flip-Flop: Transistor Sizing

16 Digital Integrated Circuits© Prentice Hall 1995 Sequential Logic 6 Transistor CMOS SR-Flip Flop

17 Digital Integrated Circuits© Prentice Hall 1995 Sequential Logic Charge-Based Storage

18 Digital Integrated Circuits© Prentice Hall 1995 Sequential Logic Master-Slave Flip-Flop

19 Digital Integrated Circuits© Prentice Hall 1995 Sequential Logic 2 phase non-overlapping clocks

20 Digital Integrated Circuits© Prentice Hall 1995 Sequential Logic 2-phase dynamic flip-flop

21 Digital Integrated Circuits© Prentice Hall 1995 Sequential Logic Flip-flop insensitive to clock overlap

22 Digital Integrated Circuits© Prentice Hall 1995 Sequential Logic C 2 MOS avoids Race Conditions

23 Digital Integrated Circuits© Prentice Hall 1995 Sequential Logic Pipelining

24 Digital Integrated Circuits© Prentice Hall 1995 Sequential Logic Pipelined Logic using C 2 MOS

25 Digital Integrated Circuits© Prentice Hall 1995 Sequential Logic Example

26 Digital Integrated Circuits© Prentice Hall 1995 Sequential Logic NORA CMOS Modules

27 Digital Integrated Circuits© Prentice Hall 1995 Sequential Logic Doubled C 2 MOS Latches

28 Digital Integrated Circuits© Prentice Hall 1995 Sequential Logic TSPC - True Single Phase Clock Logic

29 Digital Integrated Circuits© Prentice Hall 1995 Sequential Logic Master-Slave Flip-flops


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