JPS59182741U - Microcomputer reset circuit - Google Patents
Microcomputer reset circuitInfo
- Publication number
- JPS59182741U JPS59182741U JP7764583U JP7764583U JPS59182741U JP S59182741 U JPS59182741 U JP S59182741U JP 7764583 U JP7764583 U JP 7764583U JP 7764583 U JP7764583 U JP 7764583U JP S59182741 U JPS59182741 U JP S59182741U
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- microcomputer
- constant voltage
- pass filter
- power supply
- 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
- Safety Devices In Control Systems (AREA)
- Electronic Switches (AREA)
- 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
図面は本考案における一実施例のマイコンリセット回路
図を示したものである。
Ａ・・・直流定電圧回路、Ｂ・・・波形整形回路、Ｃ・
・・低域ろ波回路、Ｄ・・・直流定電圧検出回路、Ｅ・
・・論理和回路。The drawing shows a microcomputer reset circuit diagram of an embodiment of the present invention. A: DC constant voltage circuit, B: Waveform shaping circuit, C:
・・Low-pass filter circuit, D・DC constant voltage detection circuit, E・
...Order circuit.
Claims (1)
用電源の周期に同期したパルスを用い、さらに商用電源
の周波数を自動的に判別するマイコンのリセット回路に
おいて、商用電源の周期に同期したパルスを発生させる
波形整形回路Ｂと前記同期パルスが正常か異常かを判別
する低域ろ波−回路Ｃさマイコン用の直流定電圧が正常
か異常かを判別する直流定電圧検出回路りと、遅延要素
を有する論理和回路Ｅとから成り、前記波形整形回路Ｂ
出力を前記低域ろ波回路Ｃに入力せしめ、さらに前記低
域ろ波回路Ｃと前記直流定電圧検出回路りの各出力を入
力とする論理和回路Ｅ出力をマイコンのリセット入力と
することを特徴としたマイコンのリセット回路。In addition to internally processing time and time, the reference time uses pulses synchronized with the cycle of the commercial power supply, and in the reset circuit of the microcomputer that automatically determines the frequency of the commercial power supply, the pulse synchronized with the cycle of the commercial power supply. A waveform shaping circuit B that generates the synchronization pulse, a low-pass filter circuit C that determines whether the synchronization pulse is normal or abnormal, a DC constant voltage detection circuit that determines whether the DC constant voltage for the microcomputer is normal or abnormal, and a delay. the waveform shaping circuit B;
The output is input to the low-pass filter circuit C, and the output of the OR circuit E, which inputs each output of the low-pass filter circuit C and the DC constant voltage detection circuit, is used as a reset input of the microcomputer. Featured microcontroller reset circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7764583U JPS59182741U (en) | 1983-05-24 | 1983-05-24 | Microcomputer reset circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7764583U JPS59182741U (en) | 1983-05-24 | 1983-05-24 | Microcomputer reset circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS59182741U true JPS59182741U (en) | 1984-12-05 |
| JPH021614Y2 JPH021614Y2 (en) | 1990-01-16 |
Family
ID=30207670
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7764583U Granted JPS59182741U (en) | 1983-05-24 | 1983-05-24 | Microcomputer reset circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59182741U (en) |
-
1983
- 1983-05-24 JP JP7764583U patent/JPS59182741U/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPH021614Y2 (en) | 1990-01-16 |
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