JPS6413758A - Integrated circuit device - Google Patents
Integrated circuit deviceInfo
- Publication number
- JPS6413758A JPS6413758A JP62170002A JP17000287A JPS6413758A JP S6413758 A JPS6413758 A JP S6413758A JP 62170002 A JP62170002 A JP 62170002A JP 17000287 A JP17000287 A JP 17000287A JP S6413758 A JPS6413758 A JP S6413758A
- Authority
- JP
- Japan
- Prior art keywords
- output
- input
- functional block
- outputs
- tri
- 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 enable tests at every functional block by simple circuitry having few addition circuits and wirings by bringing all of outputs from each division circuit to tri-state outputs and connecting input/outputs not connected to primary input/output pins in the input/outputs of the division circuits to the primary input/output pins not connected to the division circuits through tri-state elements. CONSTITUTION:An external input 101 and an output 106 from a functional block 2 are input to a functional block 1, and the functional block 1 outputs an output 102 and an output 105. An input 103 and the output 105 are input to the functional block 2, and the functional block 2 outputs an output 104 and the output 106. The external output 101 is output to the output 105 through a tri-state element 25 and further to the output 104 through an element 26 from the output 105, and the input 103 is output to the output 106 through an element 28 and further to the output 102 through an element 27 from the output 106. Elements 21-24 are turned ON on actual operation, the elements 25-28 are turned OFF, the output 105 is input to the functional block 2, and the output 106 is input to the functional block 1. Accordingly, tests are enabled at every division circuit from the outside while simplifying circuitry.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62170002A JPS6413758A (en) | 1987-07-08 | 1987-07-08 | Integrated circuit device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62170002A JPS6413758A (en) | 1987-07-08 | 1987-07-08 | Integrated circuit device |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6413758A true JPS6413758A (en) | 1989-01-18 |
Family
ID=15896770
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62170002A Pending JPS6413758A (en) | 1987-07-08 | 1987-07-08 | Integrated circuit device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6413758A (en) |
-
1987
- 1987-07-08 JP JP62170002A patent/JPS6413758A/en active Pending
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