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Proc-Type: 2001,MIC-CLEAR
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<SEC-DOCUMENT>0001183962-05-000001.txt : 20050811
<SEC-HEADER>0001183962-05-000001.hdr.sgml : 20050811
<ACCEPTANCE-DATETIME>20050811113959
ACCESSION NUMBER:		0001183962-05-000001
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20050810
FILED AS OF DATE:		20050811
DATE AS OF CHANGE:		20050811

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			CYPRESS SEMICONDUCTOR CORP /DE/
		CENTRAL INDEX KEY:			0000791915
		STANDARD INDUSTRIAL CLASSIFICATION:	SEMICONDUCTORS & RELATED DEVICES [3674]
		IRS NUMBER:				942885898
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			0621

	BUSINESS ADDRESS:	
		STREET 1:		198 CHAMPION COURT
		CITY:			SAN JOSE
		STATE:			CA
		ZIP:			95134
		BUSINESS PHONE:		4089432600

	MAIL ADDRESS:	
		STREET 1:		198 CHAMPION COURT
		CITY:			SAN JOSE
		STATE:			CA
		ZIP:			95134

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			ALVAREZ ANTONIO R
		CENTRAL INDEX KEY:			0001183962

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-10079
		FILM NUMBER:		051015613

	BUSINESS ADDRESS:	
		STREET 1:		3901 N FIRST ST
		CITY:			SAN JOSE
		STATE:			CA
		ZIP:			95134
		BUSINESS PHONE:		4089432772

	MAIL ADDRESS:	
		STREET 1:		3901 N. FIRST ST.
		CITY:			SAN JOSE
		STATE:			CA
		ZIP:			95134
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>primary_doc.xml
<DESCRIPTION>PRIMARY DOCUMENT
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0202</schemaVersion>

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    <periodOfReport>2005-08-10</periodOfReport>

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        <issuerName>CYPRESS SEMICONDUCTOR CORP /DE/</issuerName>
        <issuerTradingSymbol>CY</issuerTradingSymbol>
    </issuer>

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            <rptOwnerName>ALVAREZ ANTONIO R</rptOwnerName>
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            <rptOwnerStreet1>3901 N. FIRST ST.</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>SAN JOSE</rptOwnerCity>
            <rptOwnerState>CA</rptOwnerState>
            <rptOwnerZipCode>95134</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
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        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>V.P., Memory Products Div.</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

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                <value>2005-08-10</value>
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            <transactionTimeliness>
                <value></value>
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            <transactionAmounts>
                <transactionShares>
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                <transactionPricePerShare>
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                <underlyingSecurityTitle>
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                    <value>84500</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>755252</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeTransaction>
    </derivativeTable>

    <ownerSignature>
        <signatureName>Antonio R. Alvarez</signatureName>
        <signatureDate>2005-08-10</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
-----END PRIVACY-ENHANCED MESSAGE-----