JPS6453624A - Clock interruption detecting circuit - Google Patents
Clock interruption detecting circuitInfo
- Publication number
- JPS6453624A JPS6453624A JP62210980A JP21098087A JPS6453624A JP S6453624 A JPS6453624 A JP S6453624A JP 62210980 A JP62210980 A JP 62210980A JP 21098087 A JP21098087 A JP 21098087A JP S6453624 A JPS6453624 A JP S6453624A
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- clock
- output signal
- exclusive
- delaying
- 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
Abstract
PURPOSE:To eliminate externally fitted parts and to miniaturize the circuit by detecting the interruption of a clock only by a delaying element, an exclusive OR circuit and the logical circuit of FF. CONSTITUTION:When a clock 6 is inputted to be observed to a data input terminal 4 at a time (t0), an output signal 7 delayed only by one period is outputted from a delaying circuit 2. Then, the output signal 7 of the clock 6 and the delaying circuit 2 is inputted to an exclusive OR circuit 3, both signals are of the same phase and clock width, and therefore, an output signal 8 of the exclusive OR circuit 3 is a low level and an output signal 9 of a TFF1 is a low level. When the clock 6 to be observed at a time (t1) is stopped, the output signal 8 of the exclusive OR circuit 3 becomes a high level and the output signal 9 of the TFF1 is changed to the high level. Consequently, the clock interruption can be detected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62210980A JPS6453624A (en) | 1987-08-24 | 1987-08-24 | Clock interruption detecting circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62210980A JPS6453624A (en) | 1987-08-24 | 1987-08-24 | Clock interruption detecting circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6453624A true JPS6453624A (en) | 1989-03-01 |
Family
ID=16598313
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62210980A Pending JPS6453624A (en) | 1987-08-24 | 1987-08-24 | Clock interruption detecting circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6453624A (en) |
-
1987
- 1987-08-24 JP JP62210980A patent/JPS6453624A/en active Pending
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