JPS5584099A - Memory device - Google Patents

Memory device

Info

Publication number
JPS5584099A
JPS5584099A JP15628078A JP15628078A JPS5584099A JP S5584099 A JPS5584099 A JP S5584099A JP 15628078 A JP15628078 A JP 15628078A JP 15628078 A JP15628078 A JP 15628078A JP S5584099 A JPS5584099 A JP S5584099A
Authority
JP
Japan
Prior art keywords
selector
error detection
devices
memory device
memory devices
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
JP15628078A
Other languages
Japanese (ja)
Inventor
Noriyuki Toyoki
Kaoru Aizawa
Takashi Sakai
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.)
Fujitsu Ltd
Original Assignee
Fujitsu 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 Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP15628078A priority Critical patent/JPS5584099A/en
Publication of JPS5584099A publication Critical patent/JPS5584099A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To enhance the reliability and durability of the memory device by selecting one of the duplicated memory devices in the state under which the selection latch of the selector is switched according to the error detection and then connected to the selector.
CONSTITUTION: When the same data after duplication is written into memory devices 11-A and 11-B each, the write data of either one of the two devices is applied to register 13 via selector 12. And when the error of the reading data is detected at error detection part 14 to the writing data, the latching output delivered from selection latch circuit 15 consisting of exclusive OR circuit 16 and FF17 switches with every error detection to give the control to the selection latch of selector 12. Accordingly, the alternative selection is given to devices 11-A and 11-B while being connected to selector 12, and the reading is carried out continuously with no cut-off between these two memory devices via the error detection of once. As a result, both the reliability and the duarability can be enhanced for the memory device.
COPYRIGHT: (C)1980,JPO&Japio
JP15628078A 1978-12-20 1978-12-20 Memory device Pending JPS5584099A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15628078A JPS5584099A (en) 1978-12-20 1978-12-20 Memory device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15628078A JPS5584099A (en) 1978-12-20 1978-12-20 Memory device

Publications (1)

Publication Number Publication Date
JPS5584099A true JPS5584099A (en) 1980-06-24

Family

ID=15624361

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15628078A Pending JPS5584099A (en) 1978-12-20 1978-12-20 Memory device

Country Status (1)

Country Link
JP (1) JPS5584099A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5883396A (en) * 1981-11-11 1983-05-19 Toshiba Corp Data processor
JPS59177796A (en) * 1983-03-25 1984-10-08 Fuji Electric Co Ltd Duplication control system of memory
JPS60179860A (en) * 1984-02-27 1985-09-13 Fuji Electric Co Ltd Switching control system of storage device
CN105788638A (en) * 2011-03-04 2016-07-20 瑞萨电子株式会社 Semiconductor device

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5883396A (en) * 1981-11-11 1983-05-19 Toshiba Corp Data processor
JPS59177796A (en) * 1983-03-25 1984-10-08 Fuji Electric Co Ltd Duplication control system of memory
JPH0238969B2 (en) * 1983-03-25 1990-09-03 Fuji Denki Kk
JPS60179860A (en) * 1984-02-27 1985-09-13 Fuji Electric Co Ltd Switching control system of storage device
JPH0315213B2 (en) * 1984-02-27 1991-02-28 Fuji Denki Kk
CN105788638A (en) * 2011-03-04 2016-07-20 瑞萨电子株式会社 Semiconductor device

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