JPS5564699A - Semiconductor integrated-circuit memory - Google Patents
Semiconductor integrated-circuit memoryInfo
- Publication number
- JPS5564699A JPS5564699A JP13852178A JP13852178A JPS5564699A JP S5564699 A JPS5564699 A JP S5564699A JP 13852178 A JP13852178 A JP 13852178A JP 13852178 A JP13852178 A JP 13852178A JP S5564699 A JPS5564699 A JP S5564699A
- Authority
- JP
- Japan
- Prior art keywords
- logic
- tests
- ram
- test
- write
- 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 make it possible to self-diagnose write and read pattern tests by forming a logic circuit unit for RAM logic operation tests on the same semiconductor chip.
CONSTITUTION: On the same semiconductor chip RAM part 3 and logic circuit units such a test logic part 7, multiplexers 2 and 6, etc., used for logic operation tests of RAM part 3 are formed when test assignement signal (d) of level L is inputted to test terminal 8, logic part 7, for example, is driven and clock signal (e) inputted from terminal 9 operates logic part 7 to generate word patterns for read and write tests of RAM, thereby executing pattern tests of memory part 3 via output signals (a) and (c). When dissidence is detected between write and read patterns, test result signal (f) of a chip defect can be obtained via terminal 10.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13852178A JPS5564699A (en) | 1978-11-09 | 1978-11-09 | Semiconductor integrated-circuit memory |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13852178A JPS5564699A (en) | 1978-11-09 | 1978-11-09 | Semiconductor integrated-circuit memory |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5564699A true JPS5564699A (en) | 1980-05-15 |
Family
ID=15224079
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP13852178A Pending JPS5564699A (en) | 1978-11-09 | 1978-11-09 | Semiconductor integrated-circuit memory |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5564699A (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS603082A (en) * | 1983-06-18 | 1985-01-09 | Dainippon Printing Co Ltd | Ic card |
JPS61296600A (en) * | 1985-06-24 | 1986-12-27 | Nec Ic Microcomput Syst Ltd | Storage device |
JPS6238600A (en) * | 1985-08-14 | 1987-02-19 | Fujitsu Ltd | Semiconductor memory device |
JPS6243897A (en) * | 1985-08-20 | 1987-02-25 | Nec Corp | Semiconductor memory |
JPS62293598A (en) * | 1986-06-12 | 1987-12-21 | Toshiba Corp | Semiconductor storage device |
-
1978
- 1978-11-09 JP JP13852178A patent/JPS5564699A/en active Pending
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS603082A (en) * | 1983-06-18 | 1985-01-09 | Dainippon Printing Co Ltd | Ic card |
JPH053634B2 (en) * | 1983-06-18 | 1993-01-18 | Dainippon Printing Co Ltd | |
JPS61296600A (en) * | 1985-06-24 | 1986-12-27 | Nec Ic Microcomput Syst Ltd | Storage device |
JPS6238600A (en) * | 1985-08-14 | 1987-02-19 | Fujitsu Ltd | Semiconductor memory device |
JPS6243897A (en) * | 1985-08-20 | 1987-02-25 | Nec Corp | Semiconductor memory |
JPS62293598A (en) * | 1986-06-12 | 1987-12-21 | Toshiba Corp | Semiconductor storage device |
JPH0468719B2 (en) * | 1986-06-12 | 1992-11-04 | Tokyo Shibaura Electric Co |
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