JPS6459089A - Lsi with test circuit - Google Patents
Lsi with test circuitInfo
- Publication number
- JPS6459089A JPS6459089A JP62215609A JP21560987A JPS6459089A JP S6459089 A JPS6459089 A JP S6459089A JP 62215609 A JP62215609 A JP 62215609A JP 21560987 A JP21560987 A JP 21560987A JP S6459089 A JPS6459089 A JP S6459089A
- Authority
- JP
- Japan
- Prior art keywords
- signal
- lsi
- test
- circuits
- function block
- 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
- Tests Of Electronic Circuits (AREA)
- Testing Or Measuring Of Semiconductors Or The Like (AREA)
Abstract
PURPOSE:To test a LSI in a short time by putting plural equal-function block circuits that the LSI has in parallel operation and thus testing the LSI. CONSTITUTION:A test control circuit 5 receives a test signal S3 and generates a test control signal for setting N equal-function block circuits 5-1, 5-2,...5-N a test state wherein simultaneous parallel operation is performed. An output circuit 7 sends out a signal from an internal bus 6 as an output signal S4. A comparing circuit 8 receives respective outputs when the circuits 5-1, 5-2,-5-N perform processing operation by receiving the same pattern and compares them with the signal from the internal bus 6, thereby outputting a comparison signal S5 as the comparison result indicating whether or not they are coincident. The signals S4 and S5 are observed to know whether the circuits 5-1, 5-2,...5-N7 are normal or abnormal.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62215609A JPS6459089A (en) | 1987-08-28 | 1987-08-28 | Lsi with test circuit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62215609A JPS6459089A (en) | 1987-08-28 | 1987-08-28 | Lsi with test circuit |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6459089A true JPS6459089A (en) | 1989-03-06 |
Family
ID=16675256
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62215609A Pending JPS6459089A (en) | 1987-08-28 | 1987-08-28 | Lsi with test circuit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6459089A (en) |
-
1987
- 1987-08-28 JP JP62215609A patent/JPS6459089A/en active Pending
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