JPS5387636A - Memory write unit - Google Patents

Memory write unit

Info

Publication number
JPS5387636A
JPS5387636A JP151877A JP151877A JPS5387636A JP S5387636 A JPS5387636 A JP S5387636A JP 151877 A JP151877 A JP 151877A JP 151877 A JP151877 A JP 151877A JP S5387636 A JPS5387636 A JP S5387636A
Authority
JP
Japan
Prior art keywords
memory write
write unit
data
initial state
write
Prior art date
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.)
Pending
Application number
JP151877A
Other languages
Japanese (ja)
Inventor
Hideji Tsubota
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 Ltd filed Critical Hitachi Ltd
Priority to JP151877A priority Critical patent/JPS5387636A/en
Publication of JPS5387636A publication Critical patent/JPS5387636A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11C—STATIC STORES
    • 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)
  • Static Random-Access Memory (AREA)

Abstract

PURPOSE:To shorten the write time by omitting the write of data which is equal to data in the initial state and writing only data which is different from data in the initial state.
JP151877A 1977-01-12 1977-01-12 Memory write unit Pending JPS5387636A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP151877A JPS5387636A (en) 1977-01-12 1977-01-12 Memory write unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP151877A JPS5387636A (en) 1977-01-12 1977-01-12 Memory write unit

Publications (1)

Publication Number Publication Date
JPS5387636A true JPS5387636A (en) 1978-08-02

Family

ID=11503705

Family Applications (1)

Application Number Title Priority Date Filing Date
JP151877A Pending JPS5387636A (en) 1977-01-12 1977-01-12 Memory write unit

Country Status (1)

Country Link
JP (1) JPS5387636A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006009069A1 (en) * 2004-07-21 2006-01-26 Matsushita Electric Industrial Co., Ltd. Semiconductor storage device, rewrite processing method, and program
JP2011134389A (en) * 2009-12-24 2011-07-07 Samsung Electronics Co Ltd Control device for nonvolatile memory and method of operating control device

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006009069A1 (en) * 2004-07-21 2006-01-26 Matsushita Electric Industrial Co., Ltd. Semiconductor storage device, rewrite processing method, and program
JPWO2006009069A1 (en) * 2004-07-21 2008-05-01 松下電器産業株式会社 Semiconductor memory device, rewrite processing method, and program
US7633816B2 (en) 2004-07-21 2009-12-15 Panasonic Corporation Semiconductor memory device, rewrite processing method therefor, and program thereof
JP4679521B2 (en) * 2004-07-21 2011-04-27 パナソニック株式会社 Semiconductor memory device, rewrite processing method, and program
JP2011134389A (en) * 2009-12-24 2011-07-07 Samsung Electronics Co Ltd Control device for nonvolatile memory and method of operating control device

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