JPS641198A - Semiconductor memory - Google Patents
Semiconductor memoryInfo
- Publication number
- JPS641198A JPS641198A JP62155838A JP15583887A JPS641198A JP S641198 A JPS641198 A JP S641198A JP 62155838 A JP62155838 A JP 62155838A JP 15583887 A JP15583887 A JP 15583887A JP S641198 A JPS641198 A JP S641198A
- Authority
- JP
- Japan
- Prior art keywords
- data
- bit
- test
- time
- function
- 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)
- For Increasing The Reliability Of Semiconductor Memories (AREA)
- Dram (AREA)
Abstract
PURPOSE: To shorten the time of a functional test of a memory system by reading the inverted data of 1-bit or 2-bit stored data at each time as a test function in reading operation.
CONSTITUTION: When stored data are read, the inverted data of 1-bit or 2-bit stored data are read out at each time as the function test. Namely, erroneous data can be generated when reading is performed through an external terminal without rewriting write data. Further, which cycle and which bit data is wrong in are easily recognized by predetermining the algorithm of the generation of an error generated through an error generation terminal, and an error correcting function is easily tested in the memory system. Consequently, the test time of the function test of the memory system can be shortened.
COPYRIGHT: (C)1989,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62-155838A JPH011198A (en) | 1987-06-23 | semiconductor memory |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62-155838A JPH011198A (en) | 1987-06-23 | semiconductor memory |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS641198A true JPS641198A (en) | 1989-01-05 |
JPH011198A JPH011198A (en) | 1989-01-05 |
Family
ID=
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2012008620A (en) * | 2010-06-22 | 2012-01-12 | Fujitsu Ltd | Error correction test method |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2012008620A (en) * | 2010-06-22 | 2012-01-12 | Fujitsu Ltd | Error correction test method |
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