JPS5484436A - Refresh device for nonvolatile memory - Google Patents

Refresh device for nonvolatile memory

Info

Publication number
JPS5484436A
JPS5484436A JP15263877A JP15263877A JPS5484436A JP S5484436 A JPS5484436 A JP S5484436A JP 15263877 A JP15263877 A JP 15263877A JP 15263877 A JP15263877 A JP 15263877A JP S5484436 A JPS5484436 A JP S5484436A
Authority
JP
Japan
Prior art keywords
contents
refresh
memory
address
designation
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.)
Granted
Application number
JP15263877A
Other languages
Japanese (ja)
Other versions
JPS5740594B2 (en
Inventor
Katsumi Matsumoto
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric Co 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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP15263877A priority Critical patent/JPS5484436A/en
Publication of JPS5484436A publication Critical patent/JPS5484436A/en
Publication of JPS5740594B2 publication Critical patent/JPS5740594B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Channel Selection Circuits, Automatic Tuning Circuits (AREA)
  • Read Only Memory (AREA)

Abstract

PURPOSE: To enhance the quality of the refresh memory contents by giving the sequential comparison between the fixed address of the refresh memory and each designation contents of other addresses and writing again the register contents into the refresh memory when no coincidence is obtained in the above comparison.
CONSTITUTION: Nonvolatile memory 14 sets up the contents for the refresh designation use at part of the contents of each address, and the set address information is stored in register 15. Then sequential comparison 24 is carried out by the refresh start signal between the refresh designation contents at the fixed address of memory 14 and the refresh designation contents of other address. And in case no coincidence is obtained through the above comparison, the contents of register 15 is written again into memory 14, and at the same time the contents for the refresh designation use among the writing contents is inverted through FF28 to be written. Thus, the refresh frequencies become uniform to each address to hold the assured contents, ensuring the quality betterment for the contents of memory 14 as well as the enhanced reliability.
COPYRIGHT: (C)1979,JPO&Japio
JP15263877A 1977-12-19 1977-12-19 Refresh device for nonvolatile memory Granted JPS5484436A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15263877A JPS5484436A (en) 1977-12-19 1977-12-19 Refresh device for nonvolatile memory

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15263877A JPS5484436A (en) 1977-12-19 1977-12-19 Refresh device for nonvolatile memory

Publications (2)

Publication Number Publication Date
JPS5484436A true JPS5484436A (en) 1979-07-05
JPS5740594B2 JPS5740594B2 (en) 1982-08-28

Family

ID=15544764

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15263877A Granted JPS5484436A (en) 1977-12-19 1977-12-19 Refresh device for nonvolatile memory

Country Status (1)

Country Link
JP (1) JPS5484436A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1983003888A1 (en) * 1982-05-04 1983-11-10 Matsushita Electric Industrial Co., Ltd. Cooking device

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5148943A (en) * 1974-07-15 1976-04-27 Sperry Rand Corp

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5148943A (en) * 1974-07-15 1976-04-27 Sperry Rand Corp

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1983003888A1 (en) * 1982-05-04 1983-11-10 Matsushita Electric Industrial Co., Ltd. Cooking device
US4686356A (en) * 1982-05-04 1987-08-11 Matsushita Electric Industrial Co., Ltd. Heating appliance with internal non-volatile memory

Also Published As

Publication number Publication date
JPS5740594B2 (en) 1982-08-28

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