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  <xsd:element id="lscc_SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsAndNonoptionEquityInstrumentsVestedInPeriodNumberOfShares" name="SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsAndNonoptionEquityInstrumentsVestedInPeriodNumberOfShares" nillable="true" substitutionGroup="xbrli:item" type="xbrli:sharesItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="lscc_SingleReportableSegmentMember" name="SingleReportableSegmentMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="lscc_TechnologyCustomerRelationshipsTradeNamesAndTrademarksMember" name="TechnologyCustomerRelationshipsTradeNamesAndTrademarksMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="lscc_The2022CreditAgreementMember" name="The2022CreditAgreementMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="lscc_The2026CreditAgreementMember" name="The2026CreditAgreementMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="lscc_TsrRelativeToPhlxSemiconductorSectorIndex75thPercentileMember" name="TsrRelativeToPhlxSemiconductorSectorIndex75thPercentileMember" nillable="true" substitutionGroup="xbrli:item" type="dtr-types:domainItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="lscc_statement-statement-note-13-segment-reporting-segment-reporting-details" name="statement-statement-note-13-segment-reporting-segment-reporting-details" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="lscc_statement-statement-note-13-segment-reporting-tables" name="statement-statement-note-13-segment-reporting-tables" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="lscc_statement-statement-note-2-net-income-per-share-earnings-per-share-details" name="statement-statement-note-2-net-income-per-share-earnings-per-share-details" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="lscc_statement-statement-note-2-net-income-per-share-tables" name="statement-statement-note-2-net-income-per-share-tables" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="lscc_statement-statement-note-3-revenue-from-contracts-with-customers-contract-balance-details" name="statement-statement-note-3-revenue-from-contracts-with-customers-contract-balance-details" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="lscc_statement-statement-note-3-revenue-from-contracts-with-customers-disaggregation-of-revenue-details" name="statement-statement-note-3-revenue-from-contracts-with-customers-disaggregation-of-revenue-details" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="lscc_statement-statement-note-3-revenue-from-contracts-with-customers-tables" name="statement-statement-note-3-revenue-from-contracts-with-customers-tables" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="lscc_statement-statement-note-4-balance-sheet-components-accounts-receivable-details" name="statement-statement-note-4-balance-sheet-components-accounts-receivable-details" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="lscc_statement-statement-note-4-balance-sheet-components-accrued-liabilities-details" name="statement-statement-note-4-balance-sheet-components-accrued-liabilities-details" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="lscc_statement-statement-note-4-balance-sheet-components-accrued-liabilities-details-parentheticals" name="statement-statement-note-4-balance-sheet-components-accrued-liabilities-details-parentheticals" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="lscc_statement-statement-note-4-balance-sheet-components-inventories-details" name="statement-statement-note-4-balance-sheet-components-inventories-details" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="lscc_statement-statement-note-4-balance-sheet-components-other-longterm-liabilities-details" name="statement-statement-note-4-balance-sheet-components-other-longterm-liabilities-details" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="lscc_statement-statement-note-4-balance-sheet-components-property-plant-and-equipment-details" name="statement-statement-note-4-balance-sheet-components-property-plant-and-equipment-details" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="lscc_statement-statement-note-4-balance-sheet-components-tables" name="statement-statement-note-4-balance-sheet-components-tables" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="lscc_statement-statement-note-6-restructuring-activity-related-to-restructuring-plans-details" name="statement-statement-note-6-restructuring-activity-related-to-restructuring-plans-details" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="lscc_statement-statement-note-6-restructuring-tables" name="statement-statement-note-6-restructuring-tables" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="lscc_statement-statement-note-7-leases-lease-balance-classifications-within-the-consolidated-balance-sheets-and-lease-activity-details" name="statement-statement-note-7-leases-lease-balance-classifications-within-the-consolidated-balance-sheets-and-lease-activity-details" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="lscc_statement-statement-note-7-leases-maturities-of-operating-lease-liabilities-details" name="statement-statement-note-7-leases-maturities-of-operating-lease-liabilities-details" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="lscc_statement-statement-note-7-leases-tables" name="statement-statement-note-7-leases-tables" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="lscc_statement-statement-note-8-intangible-assets-amortization-expense-details" name="statement-statement-note-8-intangible-assets-amortization-expense-details" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="lscc_statement-statement-note-8-intangible-assets-tables" name="statement-statement-note-8-intangible-assets-tables" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="lscc_statement-statement-note-9-stockbased-compensation-share-based-compensation-performance-shares-award-market-condition-or-performance-condition-details" name="statement-statement-note-9-stockbased-compensation-share-based-compensation-performance-shares-award-market-condition-or-performance-condition-details" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="lscc_statement-statement-note-9-stockbased-compensation-stockbased-compensation-details" name="statement-statement-note-9-stockbased-compensation-stockbased-compensation-details" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="lscc_statement-statement-note-9-stockbased-compensation-tables" name="statement-statement-note-9-stockbased-compensation-tables" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
  <xsd:element abstract="true" id="lscc_statement-statement-significant-accounting-policies-policies" name="statement-statement-significant-accounting-policies-policies" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration"/>
</xsd:schema>
