Document and Entity Information - shares	3 Months Ended
	Sep. 26, 2015	Oct. 26, 2015
Document and Entity Information [Abstract]
Entity Registrant Name	Pericom Semiconductor Corporation
Entity Central Index Key	0001001426
Document Type	10-Q
Document Period End Date	Sep. 26, 2015
Amendment Flag	false
Document Fiscal Year Focus	2016
Document Fiscal Period Focus	Q1
Current Fiscal Year End Date	--06-27
Entity Filer Category	Accelerated Filer
Entity Common Stock, Shares Outstanding		21,891,000