Document and Entity Information	3 Months Ended
	Sep. 28, 2013	Oct. 29, 2013
Document and Entity Information [Abstract]
Entity Registrant Name	PERICOM SEMICONDUCTOR CORP
Entity Central Index Key	0001001426
Document Type	10-Q
Document Period End Date	Sep. 28, 2013
Amendment Flag	false
Document Fiscal Year Focus	2014
Document Fiscal Period Focus	Q1
Current Fiscal Year End Date	--06-29
Entity Filer Category	Accelerated Filer
Entity Common Stock, Shares Outstanding		22,767,000