JPS57138089A - Check system for dynamic memory - Google Patents

Check system for dynamic memory

Info

Publication number
JPS57138089A
JPS57138089A JP56021493A JP2149381A JPS57138089A JP S57138089 A JPS57138089 A JP S57138089A JP 56021493 A JP56021493 A JP 56021493A JP 2149381 A JP2149381 A JP 2149381A JP S57138089 A JPS57138089 A JP S57138089A
Authority
JP
Japan
Prior art keywords
memory
data
time
unit
refresh
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
JP56021493A
Other languages
Japanese (ja)
Inventor
Yasufumi Tanimoto
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 JP56021493A priority Critical patent/JPS57138089A/en
Publication of JPS57138089A publication Critical patent/JPS57138089A/en
Pending legal-status Critical Current

Links

Landscapes

  • Debugging And Monitoring (AREA)
  • Techniques For Improving Reliability Of Storages (AREA)

Abstract

PURPOSE: To surely detect failures in refresh circuit sogether with the memory itself, by reading out the memory after a data storing time via a timer.
CONSTITUTION: When a check data is written in a dynamic RAM unit 23 providing a refresh memory via an ROM22 storing a process program and a CPU20, it is immediately read out and the presence of failure of the RAM23 is detected. The data written in the unit 23 with the CPU20 via a timer 27 the time of which is set more than the data storage time of the dynamic memory section of the unit 23 and which is set at the same time of the write-in, is read out, allowing to surely detect failures in the refresh memory.
COPYRIGHT: (C)1982,JPO&Japio
JP56021493A 1981-02-18 1981-02-18 Check system for dynamic memory Pending JPS57138089A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56021493A JPS57138089A (en) 1981-02-18 1981-02-18 Check system for dynamic memory

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56021493A JPS57138089A (en) 1981-02-18 1981-02-18 Check system for dynamic memory

Publications (1)

Publication Number Publication Date
JPS57138089A true JPS57138089A (en) 1982-08-26

Family

ID=12056491

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56021493A Pending JPS57138089A (en) 1981-02-18 1981-02-18 Check system for dynamic memory

Country Status (1)

Country Link
JP (1) JPS57138089A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010157276A (en) * 2008-12-26 2010-07-15 Fujitsu Ltd Device and method for detecting lifetime of memory

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010157276A (en) * 2008-12-26 2010-07-15 Fujitsu Ltd Device and method for detecting lifetime of memory

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