JPS5261933A - Memory unit - Google Patents
Memory unitInfo
- Publication number
- JPS5261933A JPS5261933A JP50138979A JP13897975A JPS5261933A JP S5261933 A JPS5261933 A JP S5261933A JP 50138979 A JP50138979 A JP 50138979A JP 13897975 A JP13897975 A JP 13897975A JP S5261933 A JPS5261933 A JP S5261933A
- Authority
- JP
- Japan
- Prior art keywords
- memory unit
- memory cells
- yield
- added
- improved
- 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
Links
Abstract
PURPOSE: In case very small number of faulty memory exists among many memory cells functioning correctly, auxiliary memory cells are added. As a result, the yield of LSI chip can be improved.
COPYRIGHT: (C)1977,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP50138979A JPS5261933A (en) | 1975-11-18 | 1975-11-18 | Memory unit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP50138979A JPS5261933A (en) | 1975-11-18 | 1975-11-18 | Memory unit |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5261933A true JPS5261933A (en) | 1977-05-21 |
Family
ID=15234631
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP50138979A Pending JPS5261933A (en) | 1975-11-18 | 1975-11-18 | Memory unit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5261933A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1980002889A1 (en) * | 1979-06-15 | 1980-12-24 | Fujitsu Ltd | Semiconductor memory device |
WO1981000027A1 (en) * | 1979-06-25 | 1981-01-08 | Fujitsu Ltd | Semiconductor memory device |
DE3906897A1 (en) * | 1988-03-04 | 1989-09-07 | Mitsubishi Electric Corp | Semiconductor memory device with improved redundancy circuit |
JPH05135599A (en) * | 1992-05-18 | 1993-06-01 | Toshiba Corp | Semiconductor memory device |
-
1975
- 1975-11-18 JP JP50138979A patent/JPS5261933A/en active Pending
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1980002889A1 (en) * | 1979-06-15 | 1980-12-24 | Fujitsu Ltd | Semiconductor memory device |
US4473895A (en) * | 1979-06-15 | 1984-09-25 | Fujitsu Limited | Semiconductor memory device |
WO1981000027A1 (en) * | 1979-06-25 | 1981-01-08 | Fujitsu Ltd | Semiconductor memory device |
DE3906897A1 (en) * | 1988-03-04 | 1989-09-07 | Mitsubishi Electric Corp | Semiconductor memory device with improved redundancy circuit |
JPH05135599A (en) * | 1992-05-18 | 1993-06-01 | Toshiba Corp | Semiconductor memory device |
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