JPS5528501A - Test system for memory device - Google Patents
Test system for memory deviceInfo
- Publication number
- JPS5528501A JPS5528501A JP9705778A JP9705778A JPS5528501A JP S5528501 A JPS5528501 A JP S5528501A JP 9705778 A JP9705778 A JP 9705778A JP 9705778 A JP9705778 A JP 9705778A JP S5528501 A JPS5528501 A JP S5528501A
- Authority
- JP
- Japan
- Prior art keywords
- test
- writing
- memory device
- error test
- action
- 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
Landscapes
- Techniques For Improving Reliability Of Storages (AREA)
Abstract
PURPOSE: To shorten the test time of the memory device without lowering the fault detecting capacity by applying the error test mechanism the normal memory device features for the partial writing action also to the full writing action of the test time.
CONSTITUTION: When the full writing action is given to the fixed memory unit via processor 1 and memory device 2, the error test information is added to the writing data. Thus a test is given based on the added error test information for reading when the data is read out of the memory unit. For the partial writing, the data is rewritten partially after giving the reading action in accordance with the error test, and the error test information is added to the new data to the error test for writing. With supply of the test mode signal from processor 1, the error test mechanism for the normal partial writing is applied also to the full writing action. Thus the test time can be shortened.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9705778A JPS5528501A (en) | 1978-08-08 | 1978-08-08 | Test system for memory device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9705778A JPS5528501A (en) | 1978-08-08 | 1978-08-08 | Test system for memory device |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5528501A true JPS5528501A (en) | 1980-02-29 |
Family
ID=14182018
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP9705778A Pending JPS5528501A (en) | 1978-08-08 | 1978-08-08 | Test system for memory device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5528501A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH02234251A (en) * | 1989-03-08 | 1990-09-17 | Nec Corp | Control system for extended storage |
-
1978
- 1978-08-08 JP JP9705778A patent/JPS5528501A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH02234251A (en) * | 1989-03-08 | 1990-09-17 | Nec Corp | Control system for extended storage |
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