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Digital Fundamentals

This chapter delves into the foundational elements of digital electronics, focusing on latches, flip-flops, and timers. We explore S-R (Set-Reset) latches, gated versions, and edge-triggered flip-flops, detailing their operations, characteristics, and applications, including parallel data storage, counting, and frequency division. Additionally, the chapter highlights the 555 Timer's functions in monostable and astable modes. This comprehensive guide is essential for understanding timing and storage mechanisms in digital systems.

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Digital Fundamentals

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  1. Digital Fundamentals CHAPTER 7Latches, Flip-Flops and Timers

  2. Latches

  3. Latches • S-R (Set-Reset) latch • Gated S-R latch • Gated D latch

  4. Latches • S-R latch

  5. S-R latch Latches

  6. Latches • Gated S-R latch

  7. Latches • Gated D latch

  8. Edge-Triggered Flip-Flops

  9. Edge-Triggered Flip-Flops • Edge-triggered S-R flip-flop • Edge-triggered D flip-flop • Edge-triggered J-K flip-flop

  10. Waveforms Edge-Triggered Flip-Flops • Edge-triggered S-R flip-flop

  11. Edge-Triggered Flip-Flops • Edge-triggered S-R flip-flop

  12. Waveforms Edge-Triggered Flip-Flops • Edge-triggered D flip-flop

  13. Edge-Triggered Flip-Flops • Edge-triggered D flip-flop

  14. Waveforms Edge-Triggered Flip-Flops • Edge-triggered J-K flip-flop

  15. Edge-Triggered Flip-Flops • Edge-triggered J-K flip-flop

  16. Flip-Flop Operating Characteristics

  17. Flip-Flop Operating Characteristics • Propagation delay times • Set-up time • Hold time • Maximum clock frequency • Pulse widths • Power dissipation

  18. Flip-Flop Applications

  19. Flip-Flop Applications • Parallel data storage • Frequency division • Counting

  20. Flip-Flop Applications • Parallel data storage

  21. Flip-Flop Applications • Frequency division

  22. Flip-Flop Applications • Counting

  23. One-Shots

  24. One-Shots • Nonretriggerable one-shot • Regriggerable one-shot

  25. One-Shots • Nonretriggerable one-shot

  26. One-Shots • Nonretriggerable one-shot

  27. One-Shots • Regriggerable one-shot

  28. One-Shots • Regriggerable one-shot

  29. The 555 Timer

  30. The 555 Timer • Monostable (one-shot) operation • Astable operation

  31. tw=1.1R1C1 The 555 Timer • Monostable (one-shot) operation

  32. The 555 Timer • Astable operation

  33. CPLD Macrocells (Altera or Xilinx)

  34. CPLD Macrocells (Altera or Xilinx) • The Altera MAX 7000 macrocell • The Xilinx CoolRunner-II macrocell

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