JPS5674900A - Semiconductor storage device - Google Patents
Semiconductor storage deviceInfo
- Publication number
- JPS5674900A JPS5674900A JP15103379A JP15103379A JPS5674900A JP S5674900 A JPS5674900 A JP S5674900A JP 15103379 A JP15103379 A JP 15103379A JP 15103379 A JP15103379 A JP 15103379A JP S5674900 A JPS5674900 A JP S5674900A
- Authority
- JP
- Japan
- Prior art keywords
- address
- storage
- cell
- defective
- signal
- 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: To make it possible to use a cell array as a good semiconductor storage device even when there are defective cells on the cell array, by installing an increased storage cell.
CONSTITUTION: When any defective cell is detected in storage cell array 5 by inspection, the storage instruction signal is generated from the inspection device to control terminal 16, and X address information of the defective cell is stored at bad address storage section 10. When this X address of defective cell is accessed, the address signal from X address terminal 1 and the address signal from bad address storage section 10 are compared to each other, and the address coincidence signal is output to output terminal 11 of coincidence circuit 9. This coincidence signal controlls X decoder 3 and does not select any of both X addresses but selects increased storage section 15. Since the increased storage storage cell is selected forcibly even when any defective cell exists as mentioned above, the cell array can be used as a good semiconductor storage.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15103379A JPS5674900A (en) | 1979-11-20 | 1979-11-20 | Semiconductor storage device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15103379A JPS5674900A (en) | 1979-11-20 | 1979-11-20 | Semiconductor storage device |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5674900A true JPS5674900A (en) | 1981-06-20 |
Family
ID=15509826
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP15103379A Pending JPS5674900A (en) | 1979-11-20 | 1979-11-20 | Semiconductor storage device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5674900A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61198348A (en) * | 1985-02-28 | 1986-09-02 | Nec Corp | Memory package |
JPS6425264A (en) * | 1987-07-22 | 1989-01-27 | Hitachi Ltd | Multi chip memory module |
-
1979
- 1979-11-20 JP JP15103379A patent/JPS5674900A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61198348A (en) * | 1985-02-28 | 1986-09-02 | Nec Corp | Memory package |
JPS6425264A (en) * | 1987-07-22 | 1989-01-27 | Hitachi Ltd | Multi chip memory module |
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