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Priority to JP9891576ApriorityCriticalpatent/JPS5296831A/ja
Publication of JPS5296831ApublicationCriticalpatent/JPS5296831A/ja
Publication of JPS5652397B2publicationCriticalpatent/JPS5652397B2/ja
G11C11/00—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor
G11C11/21—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor using electric elements
G11C11/34—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor using electric elements using semiconductor devices
G11C11/40—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor using electric elements using semiconductor devices using transistors
G11C11/401—Digital stores characterised by the use of particular electric or magnetic storage elements; Storage elements therefor using electric elements using semiconductor devices using transistors forming cells needing refreshing or charge regeneration, i.e. dynamic cells
G11C11/4063—Auxiliary circuits, e.g. for addressing, decoding, driving, writing, sensing or timing
G11C11/407—Auxiliary circuits, e.g. for addressing, decoding, driving, writing, sensing or timing for memory cells of the field-effect type
G11C11/4078—Safety or protection circuits, e.g. for preventing inadvertent or unauthorised reading or writing; Status cells; Test cells