Document and Entity Information	9 Months Ended
	Mar. 30, 2013	May 01, 2013
Document and Entity Information [Abstract]
Entity Registrant Name	PERICOM SEMICONDUCTOR CORP
Entity Central Index Key	0001001426
Amendment Flag	false
Current Fiscal Year End Date	--06-29
Document Type	10-Q
Document Period End Date	Mar. 30, 2013
Document Fiscal Year Focus	2013
Document Fiscal Period Focus	Q3
Entity Filer Category	Accelerated Filer
Entity Common Stock, Shares Outstanding		22,941,000