Adaptation/GUID-4AFDA3FF-38D1-5EFE-B18A-E3EAAA52EB75.dita
author Graeme Price <GRAEME.PRICE@NOKIA.COM>
Fri, 15 Oct 2010 14:32:18 +0100
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<?xml version="1.0" encoding="utf-8"?>
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<!-- Copyright (c) 2007-2010 Nokia Corporation and/or its subsidiary(-ies) All rights reserved. -->
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<!-- This component and the accompanying materials are made available under the terms of the License 
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"Eclipse Public License v1.0" which accompanies this distribution, 
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and is available at the URL "http://www.eclipse.org/legal/epl-v10.html". -->
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<!-- Initial Contributors:
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    Nokia Corporation - initial contribution.
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Contributors: 
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-->
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<!DOCTYPE concept
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  PUBLIC "-//OASIS//DTD DITA Concept//EN" "concept.dtd">
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<concept id="GUID-4AFDA3FF-38D1-5EFE-B18A-E3EAAA52EB75" xml:lang="en"><title>Flash
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Guide</title><shortdesc> Flash memory is a class of memory that can retain its contents
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even after the power has been switched off.</shortdesc><prolog><metadata><keywords/></metadata></prolog><conbody>
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<section id="GUID-71F0C83A-D03C-5CF7-9395-C7BD746B25A8"><title>Introduction</title> <p>Unlike
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ROM, the data in Flash memory can be changed by an application. </p> </section>
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<section id="GUID-97937125-353C-4043-B430-0327E214C87B"><title>Flash memory features</title> <p>  Features of Flash memory
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are:</p><ul>
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<li><p> Writing and erasing of memory has to be undertaken in blocks of memory</p></li>
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<li><p> Memory contents are retained until erased (regardless of whether the
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power has been turned on/off). </p></li>
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</ul></section>
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<section id="GUID-70642797-8164-462D-9542-05E8CB343629"><title>Flash memory limitations</title> <p>The following are limitations
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of FLASH memory: </p><ul>
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<li><p>There are a finite number of erase-write cycles (usually 100,000).</p></li>
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<li><p>NAND Flash cannot be executed in place. Instead the contents have to
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be loaded into RAM and then executed. </p></li>
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</ul></section>
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</conbody></concept>