JPS647634A - Large-scale integrated circuit - Google Patents
Large-scale integrated circuitInfo
- Publication number
- JPS647634A JPS647634A JP62163130A JP16313087A JPS647634A JP S647634 A JPS647634 A JP S647634A JP 62163130 A JP62163130 A JP 62163130A JP 16313087 A JP16313087 A JP 16313087A JP S647634 A JPS647634 A JP S647634A
- Authority
- JP
- Japan
- Prior art keywords
- signal
- input
- circuit
- test
- outputting
- 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)
- Semiconductor Integrated Circuits (AREA)
Abstract
PURPOSE:To obtain a system LSI capable of reducing test sequence and capable of simply executing a test and debugging by installing an arithmetic circuit outputting a specified pattern signal when a test signal is input and a changeover circuit outputting an output signal from the arithmetic circuit to the outside when the test signal is input. CONSTITUTION:A glue circuit 3 connected to an external bus 9, an internal bus 7 connected to the glue circuit 3, a plurality of micro-cells 5 connected to the internal bus 7, an arithmetic circuit 11 being connected to the internal bus 7 and outputting a specified pattern signal when a predetermined test signal is input from the external bus 9, and a changeover circuit 13 outputting an output signal from the arithmetic circuit 11 to the outside when said test signal is input are formed onto the same substrate 1. When a test permission signal S7 is turned ON and the predetermined test signal is input to the external bus 9, the signal is input to the decoder 11 through the external bus 9, the glue circuit 3 and the internal bus 7. The decoder 11 outputs a corresponding decoding output to the test signal, and the decoding output is output to the outside through a selector 13.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62163130A JPS647634A (en) | 1987-06-30 | 1987-06-30 | Large-scale integrated circuit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62163130A JPS647634A (en) | 1987-06-30 | 1987-06-30 | Large-scale integrated circuit |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS647634A true JPS647634A (en) | 1989-01-11 |
Family
ID=15767764
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62163130A Pending JPS647634A (en) | 1987-06-30 | 1987-06-30 | Large-scale integrated circuit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS647634A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE112014000682B4 (en) | 2013-02-05 | 2021-11-11 | Denso Corporation | DEVICE FOR DETECTING A DESTINATION IN THE ENVIRONMENT OF A VEHICLE |
-
1987
- 1987-06-30 JP JP62163130A patent/JPS647634A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE112014000682B4 (en) | 2013-02-05 | 2021-11-11 | Denso Corporation | DEVICE FOR DETECTING A DESTINATION IN THE ENVIRONMENT OF A VEHICLE |
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