JPS60158233U - reset circuit - Google Patents
reset circuitInfo
- Publication number
- JPS60158233U JPS60158233U JP4331384U JP4331384U JPS60158233U JP S60158233 U JPS60158233 U JP S60158233U JP 4331384 U JP4331384 U JP 4331384U JP 4331384 U JP4331384 U JP 4331384U JP S60158233 U JPS60158233 U JP S60158233U
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- voltage
- microcomputer
- resistor
- switch circuit
- 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
(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図は従来のリセット信号発生回路図、第２図は本考
案の実施例の同上回路図である。８：マイクロコンピュ
ータ、９：計数器、１０：フリップフロップ、１１：電
圧比較器、１２：基準電圧発生回路、１６：周辺回路。FIG. 1 is a conventional reset signal generation circuit diagram, and FIG. 2 is a circuit diagram of an embodiment of the present invention. 8: Microcomputer, 9: Counter, 10: Flip-flop, 11: Voltage comparator, 12: Reference voltage generation circuit, 16: Peripheral circuit.
Claims (1)
、該抵抗器の他端と接地の間に接続されたスイッチ回路
と、前記抵抗器とスイッチ回路との接続点の電圧と基準
電圧とを比較する電圧比較器と、前記マイクロコンピュ
ータから出力される− バス信号同期クロックパルス
を計数する計数器と、この計数の結果を保持するフリッ
プフロップ回路とから構成され、電源の投入、一時的な
電源電圧低下からの復旧、もしくは前記スイッチ回路の
開放によって、前記電圧比較器の入力信号電圧が基準電
圧に達した時から計数回路とフリップフロップ回路の動
昨を開始させ、ある一定計数の時間幅のリセット信号を
マイクロコンピュータ及び周辺回路に出力することを特
徴とするリセット回路。A resistor connected to a power supply terminal of the microcomputer, a switch circuit connected between the other end of the resistor and ground, and a voltage at a connection point between the resistor and the switch circuit are compared with a reference voltage. It consists of a voltage comparator, a counter that counts bus signal synchronized clock pulses output from the microcomputer, and a flip-flop circuit that holds the counting results. When the input signal voltage of the voltage comparator reaches the reference voltage due to recovery from the above or opening of the switch circuit, the counting circuit and the flip-flop circuit start operating, and a reset signal with a certain count time width is generated. A reset circuit characterized in that it outputs to a microcomputer and peripheral circuits.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4331384U JPS60158233U (en) | 1984-03-28 | 1984-03-28 | reset circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4331384U JPS60158233U (en) | 1984-03-28 | 1984-03-28 | reset circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS60158233U true JPS60158233U (en) | 1985-10-21 |
Family
ID=30554862
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4331384U Pending JPS60158233U (en) | 1984-03-28 | 1984-03-28 | reset circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60158233U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004019473A1 (en) * | 2002-08-21 | 2004-03-04 | Sanken Electric Co., Ltd. | Power source device having time creating circuit |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5756267U (en) * | 1980-09-20 | 1982-04-02 | ||
| JPS57197626A (en) * | 1981-04-15 | 1982-12-03 | Fujitsu Ltd | Reset circuit |
-
1984
- 1984-03-28 JP JP4331384U patent/JPS60158233U/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5756267U (en) * | 1980-09-20 | 1982-04-02 | ||
| JPS57197626A (en) * | 1981-04-15 | 1982-12-03 | Fujitsu Ltd | Reset circuit |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004019473A1 (en) * | 2002-08-21 | 2004-03-04 | Sanken Electric Co., Ltd. | Power source device having time creating circuit |
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