Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Toshiba Corp
Original Assignee
Toshiba Corp
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Filing date
Publication date
Application filed by Toshiba CorpfiledCriticalToshiba Corp
Priority to JP15559785ApriorityCriticalpatent/JPS6216722A/ja
Publication of JPS6216722ApublicationCriticalpatent/JPS6216722A/ja
Publication of JPH0559724B2publicationCriticalpatent/JPH0559724B2/ja
Refresh period automatic detecting device for semiconductor memory device, method of automatically detecting refresh period, and refresh period output device