JPS60112850U - Runaway detection circuit for microcomputer - Google Patents
Runaway detection circuit for microcomputerInfo
- Publication number
- JPS60112850U JPS60112850U JP20051883U JP20051883U JPS60112850U JP S60112850 U JPS60112850 U JP S60112850U JP 20051883 U JP20051883 U JP 20051883U JP 20051883 U JP20051883 U JP 20051883U JP S60112850 U JPS60112850 U JP S60112850U
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- output
- output signal
- microcomputer
- differentiating
- 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.)
- Granted
Links
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
第１図は本考案によるマイクロコンピュータ用暴走検出
回路の一実施例を示す回路図、第２図ａ〜ｈおよび第３
図ａ−ｈは第１図に示す回路の各動作波形図である。
１．４・・・微分回路、２，５・・・積分回路、３，６
・・・比較回路。FIG. 1 is a circuit diagram showing an embodiment of a runaway detection circuit for a microcomputer according to the present invention, FIGS.
Figures a to h are respective operation waveform diagrams of the circuit shown in Figure 1. 1.4...Differential circuit, 2,5...Integrator circuit, 3,6
...Comparison circuit.
Claims (1)
を微分することによりその前縁部分を微分したパルス出
力を発生する第１の微分回路と、この第１微分回路の出
力信号発生時にのみリセットされて電源出力を積分する
第１積分回路と、この第１積分回路の出力信号が第１の
基準値に達するまでの期間に於いてのみ出力を発生する
第１比較器と、この第１比較器の出力信号に対する前縁
部分を微分してパルス出力を発生する第２微分回路と、
前記第１微分回路の出力信号と前記第２微分回路の出力
信号との一致期間に於いてリセットされた後に電源出力
を積分する第２積分回路と、この第２積分回路の出力信
号が前記第１の基準値よりもレベルの高い第２の基準値
に達するとリセット出力を発生する第２の比較器とを設
けたことを特徴とするマイクロコンピュータ用暴走検出
回路。′A first differentiating circuit that differentiates a deadman pulse generated from a microcomputer to generate a pulse output obtained by differentiating its leading edge portion; and a first differentiating circuit that is reset only when an output signal of this first differentiating circuit is generated to integrate the power output. a first integrating circuit; a first comparator that generates an output only during a period until the output signal of the first integrating circuit reaches a first reference value; and a leading edge for the output signal of the first comparator. a second differentiator circuit that differentiates the portion and generates a pulse output;
a second integrating circuit that integrates the power supply output after being reset during a matching period between the output signal of the first differentiating circuit and the output signal of the second differentiating circuit; 1. A runaway detection circuit for a microcomputer, comprising a second comparator that generates a reset output when a second reference value, which is higher in level than the first reference value, is reached. ′
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20051883U JPS60112850U (en) | 1983-12-30 | 1983-12-30 | Runaway detection circuit for microcomputer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20051883U JPS60112850U (en) | 1983-12-30 | 1983-12-30 | Runaway detection circuit for microcomputer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60112850U true JPS60112850U (en) | 1985-07-31 |
| JPH0132138Y2 JPH0132138Y2 (en) | 1989-10-02 |
Family
ID=30761440
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP20051883U Granted JPS60112850U (en) | 1983-12-30 | 1983-12-30 | Runaway detection circuit for microcomputer |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60112850U (en) |
-
1983
- 1983-12-30 JP JP20051883U patent/JPS60112850U/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0132138Y2 (en) | 1989-10-02 |
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