<SEC-DOCUMENT>0001437749-21-013787-index.html : 20210601
<SEC-HEADER>0001437749-21-013787.hdr.sgml : 20210601
<ACCEPTANCE-DATETIME>20210601073020
ACCESSION NUMBER:		0001437749-21-013787
CONFORMED SUBMISSION TYPE:	SD
PUBLIC DOCUMENT COUNT:		4
<RULE>
<RULE-NAME>13p-1
<ITEM>
<ITEM-NUMBER>1.01
<ITEM-PERIOD>20201231
</ITEM>
<ITEM>
<ITEM-NUMBER>1.02
<ITEM-PERIOD>20201231
</ITEM>
</RULE>
FILED AS OF DATE:		20210601
DATE AS OF CHANGE:		20210601

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			LATTICE SEMICONDUCTOR CORP
		CENTRAL INDEX KEY:			0000855658
		STANDARD INDUSTRIAL CLASSIFICATION:	SEMICONDUCTORS & RELATED DEVICES [3674]
		IRS NUMBER:				930835214
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			0101

	FILING VALUES:
		FORM TYPE:		SD
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-18032
		FILM NUMBER:		21982999

	BUSINESS ADDRESS:	
		STREET 1:		5555 NE MOORE CT
		CITY:			HILLSBORO
		STATE:			OR
		ZIP:			97124
		BUSINESS PHONE:		5032688000

	MAIL ADDRESS:	
		STREET 1:		5555 NE MOORE CT
		CITY:			HILLSBORO
		STATE:			OR
		ZIP:			97124
</SEC-HEADER>
<DOCUMENT>
<TYPE>SD
<SEQUENCE>1
<FILENAME>lscc20210527_sd.htm
<DESCRIPTION>FORM SD
<TEXT>
Document 1 - file: lscc20210527_sd.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-1.01
<SEQUENCE>2
<FILENAME>ex_253980.htm
<DESCRIPTION>EXHIBIT 1.01
<TEXT>
Document 2 - file: ex_253980.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>3
<FILENAME>latticelogo2.jpg
<TEXT>
Document 3 - file: latticelogo2.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>4
<FILENAME>latticelogo.jpg
<TEXT>
Document 4 - file: latticelogo.jpg

</DOCUMENT>
</SEC-DOCUMENT>