Upload File

latches and flip flops

25
Latches and Flip-Flops

Upload: abdullah1345

Post on 12-Nov-2015

67 views

Category:

Documents


3 download

Report

DESCRIPTION

Latches and Flipflops

TRANSCRIPT

  • Latches and Flip-Flops

  • Combinational logic

    Memory elements

    A sequential circuit consists of a feedback path, and employs some memory elements.

    Combinationaloutputs Memory outputs

    External inputs

    Sequential circuit = Combinational logic + Memory Elements

    Sequential Circuit

  • Latches

    S - R (Set-Reset) latch

    Gated S - R latch

    Gated D latch

  • S R Latch

  • S R Latch

  • Gated S R Latch

  • Gated D Latch

  • Edge -Triggered Flip-Flops

    Edge-triggered S-R flip-flop

    Edge-triggered D flip-flop

    Edge-triggered J-K flip-flop

  • Edge-Triggered Flip-flops

    S-R, D and J-K edge-triggered flip-flops. Note the > symbol at the clock input.

    S C R

    Q

    SC

    R

    Q

    Q' Q'

    Positive edge-triggered flip-flops

    Q' Q'

    Negative edge-triggered flip-flops

    D C

    Q

    DC

    Q

    JC

    K

    Q

    Q'

    JC

    K

    Q

    Q'

  • Edge -Triggered Flip-Flops

    Waveforms

  • Edge -Triggered S-R Flip-Flop

  • Edge -Triggered D Flip-Flop

    Waveforms

  • Edge -Triggered D Flip-Flop

  • Waveforms

    Edge -Triggered J-K Flip-Flop

  • Edge -Triggered J-K Flip-Flop

  • Flip-Flop Applications

    Parallel data storage

    Frequency division

    Counting

  • Parallel Data Storage

  • Frequency Division

  • Counting

  • References

    Digital Fundamentals FLOYD

    9th Edition

  • QUESTIONS

    Slide Number 1Slide Number 2Slide Number 3Slide Number 4Slide Number 5Slide Number 6Slide Number 7Slide Number 8Slide Number 9Slide Number 10Slide Number 11Slide Number 12Slide Number 13Slide Number 14Slide Number 15Slide Number 16Slide Number 17Slide Number 18Slide Number 19Slide Number 20Slide Number 21Slide Number 22Slide Number 23Slide Number 24QUESTIONS


Latches e Flip-Flopslgr2/Aulas Sistemas Digitais...Latches e Flip-Flops são componentes primitivos de memória — Latches – São componentes cuja saída responde apenas à mudança

3 Flip-Flops - Griffith School of Engineering Flip-Flops Flip-flops and latches are digital memory circuits that can remain in the state in which they were set even after the input

Capítulo 7 Circuitos sequenciais: latches, flip- flops ...1 IC-UNICAMP MC602 –Mario Côrtes –IC / Unicamp Capítulo 7 Circuitos sequenciais: latches, flip-flops, registradores,

Latches, Flip-flops, Registers, Memorycs240/f19/slides/registers.pdfC.8 Memory Elements: Flip-Flops, Latches, and Registers C-55 FIGURE C.8.7 A register fi le with two read ports

LATCHES, FLIP-FLOPS Y TEMPORIZADORESsolano.orgfree.com/DISE%D1O%20DIGITAL%20CON%20VHDL/LATCHES_FLIP... · TEMPORIZADORES CONTENIDO DEL CAPÍTULO 7.1 Latches 7.2 Flip-flops disparados

FIGURES FOR CHAPTER 11 LATCHES AND FLIP-FLOPS

1. 2 Figure 2.1 Latches, flip-flops, and registers. 2.1 Latches, Flip-Flops, and Registers

Latches and Flip-Flops Discussion D7.1. Latches and Flip-Flops Latches –SR Latch –D Latch Flip-Flops –D Flip-Flop –JK Flip-Flop –T Flip-Flop

Sequential logic •Latches •Flip-flops •Counters

Chp1 - Latches and Flip-flops

Digital Design: Sequential logic, Latches and Flip-Flops Part - II

Flip-Flops - University of Pittsburghkmram/0132/lectures/latches+flip-flops.pdfElec 326 1 Flip-Flops Flip-Flops Objectives This section is the first dealing with sequential circuits

LATCHES e FLIP-FLOPs Aula 15 · Latches e FlipLatches e Flip--Flops Flops rn-1 rn-2 rn-3 rn-4 r0 célula { 0,1} = 1 bit de informação Registrador de n bits Componente de memória

Adders, multiplexers, latches, flip-flops · –Latches + clock = flip-flop –Examples: SR latch, D flip-flop, JK flip-flop, T flip-flop 21 . Title: CSCI 255: Introduction to Embedded

Comparative Analysis Of Master-Slave Latches And Flip-flops ...vlsiweb.stanford.edu/~vlada/vlada/Papers/JSSC_0499.pdfSTOJANOVIC AND OKLOBDZIJA: MASTER–SLAVE AND FLIP-FLOP LATCHES

06a Latches, Flip Flops

Sequential logic circuits. 2 Outline Sequential Circuit Models –Asynchronous –Synchronous Latches Flip-Flops

Latches, Flip-Flops, and Timers - WordPress.com · 2016-11-25 · 388 Latches, Flip-Flops, and Timers 7–1 Latches The latch is a type of temporary storage device that has two stable

Latches and Flip-Flops

Latches, Flip-flops, and Registerscs240/f18/slides/registers.pdfLatches, Flip-flops, and Registers Sequential logic: fundamental elements to store values Output depends on inputs and

Lecture #11: Sequential Logic: Latches and Flip-flops€¦ · Lecture 11: Sequential Logic Latches & Flip-flops Introduction Memory Elements Pulse-Triggered Latch S-R Latch Gated

Flip-Flops & Latches

Latches and flip flops

Flip-Flops - computing.ece.vt.eduLiaB/Microelectronic Systems/Lectures...• to explain the operation of the common latches and flip-flops – SR or set–reset latch, which may also

Company LOGO DKT 122/3 DIGITAL SYSTEM 1 WEEK #12 LATCHES & FLIP-FLOPS

Evolution of Latches and Flip-Flops-1

Flip Flops 3.1 Latches and Flip-Flops 3 ©Paul Godin Created September 2007 Last Edit Aug 2013

TEKNIK DIGITAL (A) (TI 2104) - ee.unud.ac.id · 1 TEKNIK DIGITAL (A) (TI 2104) Materi Kuliah ke-9 FLIP-FLOPS Continue Flip-flops 2 Flip-Flops • Last time, we saw how latches can

12-Latches and Flip Flops 2

5: Sequential Logic Latches & Flip-flops · 1 5: Sequential Logic Latches & Flip-flops Introduction Memory Elements Pulse-Triggered Latch S-R Latch Gated S-R Latch Gated D Latch Edge-Triggered

Outline - homepages.math.uic.eduhomepages.math.uic.edu/~jan/mcs260/latches.pdf · Flip-Flops one bit memory Flip-Flops (and latches) are the simplest circuits to store one bit. D

Flip Flops, Registers Today: First Hour: Types of Latches, Flip Flips

DigDesO5_eng.pdf Latches and clocked Flip-flops

Latches and Flip-Flops - Docceptor.net•Storage elements in clocked sequential circuits are called flip-flops, which is a binary storage device storing one bit. •Flip-flop updates

Comparative Analysis Of Master-Slave Latches And Flip ... · PDF fileComparative Analysis of Master–Slave Latches and Flip-Flops for ... Abstract— In this paper, ... The problem