JPS60109146U - Runaway control circuit for microcomputer - Google Patents
Runaway control circuit for microcomputerInfo
- Publication number
- JPS60109146U JPS60109146U JP20054183U JP20054183U JPS60109146U JP S60109146 U JPS60109146 U JP S60109146U JP 20054183 U JP20054183 U JP 20054183U JP 20054183 U JP20054183 U JP 20054183U JP S60109146 U JPS60109146 U JP S60109146U
- Authority
- JP
- Japan
- Prior art keywords
- microcomputer
- reference value
- integrating circuit
- transistor
- output signal
- 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
Landscapes
- Debugging And Monitoring (AREA)
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制御
回路の一実施例を示す回路図、第２図ａ〜ｅは第１図に
示す回路の各部動作波形図である。
１・・・微分回路、６・・・積分回路、１１．１７・・
・トランジスタ、１２．１３．１５・・・抵抗、１４・
・・コ ′ンパレータ、１６・・・インバータ
。FIG. 1 is a circuit diagram showing an embodiment of a runaway control circuit for a microcomputer according to the present invention, and FIGS. 2 a to 2 e are operational waveform diagrams of each part of the circuit shown in FIG. 1. 1...Differential circuit, 6...Integrator circuit, 11.17...
・Transistor, 12.13.15... Resistor, 14.
... Comparator, 16... Inverter.
Claims (1)
た周期範囲の信号として発生されるデツトマンパルスの
前縁を微分して出力する微分回路と、電源出力を積分す
る積分回路と、前記微分回路の出力発生期間に於いての
みオンとなることにより前記積分回路を急速放電させる
トランジスタと、前記積分回路の積分出力信号が第１基
準値を越えた時にマイクロコンピュータに対するリセッ
゛ ト信号を発生するとともにこの出力発生時に基準値
を前記第１基準値よりも低い値の第２基準値に切替、ｉ
るコンパレータと、このコンパレータの出力信号により
オンとなって前記積分回路を所定時定数を有して放電さ
せるトランジスタとによって構成されることを特徴とす
るマイクロコンピュータ用暴走制御回路。A differentiating circuit that differentiates and outputs the leading edge of a dead man pulse, which is generated by a microcomputer as a signal with a predetermined cycle range during normal operation, an integrating circuit that integrates the power output, and a transistor that rapidly discharges the integrating circuit by turning on only when the integrated output signal exceeds a first reference value; and a transistor that generates a reset signal to the microcomputer when the integrated output signal of the integrating circuit exceeds a first reference value; is switched to a second reference value lower than the first reference value, i
1. A runaway control circuit for a microcomputer, comprising: a comparator; and a transistor that is turned on by an output signal of the comparator to discharge the integrating circuit with a predetermined time constant.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20054183U JPS60109146U (en) | 1983-12-27 | 1983-12-27 | Runaway control circuit for microcomputer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20054183U JPS60109146U (en) | 1983-12-27 | 1983-12-27 | Runaway control circuit for microcomputer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60109146U true JPS60109146U (en) | 1985-07-24 |
| JPH0132137Y2 JPH0132137Y2 (en) | 1989-10-02 |
Family
ID=30761486
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP20054183U Granted JPS60109146U (en) | 1983-12-27 | 1983-12-27 | Runaway control circuit for microcomputer |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60109146U (en) |
-
1983
- 1983-12-27 JP JP20054183U patent/JPS60109146U/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0132137Y2 (en) | 1989-10-02 |
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