JPS5661098A - Memory device possible for quick test - Google Patents
Memory device possible for quick testInfo
- Publication number
- JPS5661098A JPS5661098A JP13684479A JP13684479A JPS5661098A JP S5661098 A JPS5661098 A JP S5661098A JP 13684479 A JP13684479 A JP 13684479A JP 13684479 A JP13684479 A JP 13684479A JP S5661098 A JPS5661098 A JP S5661098A
- Authority
- JP
- Japan
- Prior art keywords
- block
- data
- buffer
- register
- blocks
- 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)
Abstract
PURPOSE: To quicken the check of memory array, by writing in the test data and reading out it through one time access for write-in and readout.
CONSTITUTION: The device provides a buffer 2 in which k-block data are sequentially written in by taking n-byte as 1 block, memory array 1 simultaneously writing in and reading out the data in nk-byte at the same time, buffer 5 tentatively storing the data for k blocks share read out, and readout register 7 sequentially transferred one by one block. At test, the test data for one block share are written in all the blocks of the buffer 2 with one time access with a block selection circuit 8 commonly, the content of k-bit at the same bit location is compared among the blocks in the data for k-block's share from the buffer 5 with a readout control circuit 12, and the result of comparison is written in the register 7. Further, the presence of error can be checked 14 from the content of the register 7.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13684479A JPS5661098A (en) | 1979-10-23 | 1979-10-23 | Memory device possible for quick test |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13684479A JPS5661098A (en) | 1979-10-23 | 1979-10-23 | Memory device possible for quick test |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5661098A true JPS5661098A (en) | 1981-05-26 |
Family
ID=15184819
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP13684479A Pending JPS5661098A (en) | 1979-10-23 | 1979-10-23 | Memory device possible for quick test |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5661098A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH03226684A (en) * | 1990-02-01 | 1991-10-07 | Nec Corp | Test circuit |
-
1979
- 1979-10-23 JP JP13684479A patent/JPS5661098A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH03226684A (en) * | 1990-02-01 | 1991-10-07 | Nec Corp | Test circuit |
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