lecture13 - Lecture 13: Sequential Elements EECS 312...

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10/23/03 EECS 312 1 Lecture 13: Sequential Elements EECS 312 Reading: 7.1.1, 7.2-7.3.1 Exclude 7.2.4
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Last Time 10/23/03 EECS 312 2 • Static power consumption – Caused by reduced Vdd and Vth (full scaling) – High static power can be tolerated in high switching activity applications – In these cases, reduce both Vdd and Vth as much as possible to limit dynamic power • Sequential element introduction – Store data based on positive feedback or capacitive charge storage – Register and latch definitions
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Lecture Overview 10/23/03 EECS 312 3 • Topologies for: – Static Latches – Edge-triggered registers • Two ways to overwrite data being held in a static sequential circuit – Static sequential circuit uses positive feedback to hold state Cut the feedback loop Overpower the feedback loop
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Sequential Logic 10/23/03 EECS 312 4 COMBINATIONAL LOGIC Registers Outputs Next state CLK QD Current State Inputs 2 storage mechanisms Static Dynamic • positive feedback • charge-based
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Types of Sequential Elements
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This note was uploaded on 04/01/2008 for the course EECS 312 taught by Professor Maharbiz during the Fall '07 term at University of Michigan.

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lecture13 - Lecture 13: Sequential Elements EECS 312...

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