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Flip-Flop D Flip-Flop. Lecture Overview D Flip-Flops Logic Synchronization Types of D Flip Flops Sample Flip-Flop Applications.

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Presentation on theme: "Flip-Flop D Flip-Flop. Lecture Overview D Flip-Flops Logic Synchronization Types of D Flip Flops Sample Flip-Flop Applications."— Presentation transcript:

1 Flip-Flop D Flip-Flop

2 Lecture Overview D Flip-Flops Logic Synchronization Types of D Flip Flops Sample Flip-Flop Applications

3 D Flip-Flop CLK  Q n D01D01 D Q Q CLK D Q Positive Edge Triggered

4 Logic Synchronizing Data enters here at different times Data goes out at the same time on a clock pulse Example: Parallel Port

5 Types of D Flip-Flops D Q Q Positive Edge TriggeredNegative Edge Triggered D Q Q

6 D Q Q Negative Level Triggered D Q Q Positive Level Triggered Types of D Flip-Flops

7 Asynchronous Inputs D Flip-Flop w/ Preset D Q Q P-SET D Flip-Flop w/ Clear D Q Q CLR

8 D Flip-Flop w/ Preset & Clear D Q Q P-SET CLR Asynchronous Inputs

9 D Flip-Flop w/ Preset & Clear Q n+1 1 (preset) 0 (clear) ? (illegal) 0 1 CLK X  DXXX01DXXX01 CLR P-SET D Q Q P-SET CLR

10 Application of D Flip-Flops Data Storage Counters & State Machine Designs Logic Synchronizing Divide By Circuits

11 Divide By Circuit with D Flip-Flop

12 Divide By Circuit - Simulation


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