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.)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Hitachi LtdfiledCriticalHitachi Ltd
Priority to JP5348979ApriorityCriticalpatent/JPS55146697A/ja
Publication of JPS55146697ApublicationCriticalpatent/JPS55146697A/ja
Publication of JPS615236B2publicationCriticalpatent/JPS615236B2/ja
G11C17/00—Read-only memories programmable only once; Semi-permanent stores, e.g. manually-replaceable information cards
G11C17/14—Read-only memories programmable only once; Semi-permanent stores, e.g. manually-replaceable information cards in which contents are determined by selectively establishing, breaking or modifying connecting links by permanently altering the state of coupling elements, e.g. PROM
G11C17/18—Auxiliary circuits, e.g. for writing into memory
Landscapes
Read Only Memory
(AREA)
JP5348979A1979-05-021979-05-02Writing circuit for junction destructive p-rom
GrantedJPS55146697A
(en)