JPS5881637U - Microcomputer reset circuit - Google Patents

Microcomputer reset circuit

Info

Publication number
JPS5881637U
JPS5881637U JP17728281U JP17728281U JPS5881637U JP S5881637 U JPS5881637 U JP S5881637U JP 17728281 U JP17728281 U JP 17728281U JP 17728281 U JP17728281 U JP 17728281U JP S5881637 U JPS5881637 U JP S5881637U
Authority
JP
Japan
Prior art keywords
voltage
reset circuit
circuit
microcomputer
reset
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
Application number
JP17728281U
Other languages
Japanese (ja)
Other versions
JPS6243391Y2 (en
Inventor
吉川　伸善
Original Assignee
日本精機株式会社
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 日本精機株式会社 filed Critical 日本精機株式会社
Priority to JP17728281U priority Critical patent/JPS5881637U/en
Publication of JPS5881637U publication Critical patent/JPS5881637U/en
Application granted granted Critical
Publication of JPS6243391Y2 publication Critical patent/JPS6243391Y2/ja
Granted legal-status Critical Current

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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

【図面の簡単な説明】[Brief explanation of the drawing]

第１図はマイクロコンピュータのリセット回路の従来例
を示す回路構成図、第２図は同回路におけるリセット電
圧の変動幅を示す比較電圧説明図、第３図は本考案に係
るリセット回路の一実施例を示す回路構成図、第４図は
同回路におけるリセット電圧の変動幅を示す比較電圧説
明図である。 １・・・・・・電源、３・・・・・・定電圧回路、４・
・・・・・マイクロコンピュータ、５・・−・・・・電
圧検出回路、６・・・・・・時限回路、７．８・・・・
・・分圧抵抗、１０・・・・・・ツェナーダイオード、
１１・・・・・・コンパレータ、１４・・・・・・ＤＣ
−ＤＣコンバータ。Fig. 1 is a circuit configuration diagram showing a conventional example of a reset circuit for a microcomputer, Fig. 2 is a comparative voltage explanatory diagram showing the fluctuation range of the reset voltage in the same circuit, and Fig. 3 is an implementation of the reset circuit according to the present invention. A circuit configuration diagram showing an example, and FIG. 4 are comparative voltage explanatory diagrams showing the fluctuation range of the reset voltage in the same circuit. 1... Power supply, 3... Constant voltage circuit, 4.
...Microcomputer, 5...Voltage detection circuit, 6...Time limit circuit, 7.8...
...Voltage dividing resistor, 10... Zener diode,
11...Comparator, 14...DC
-DC converter.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 電源」＝直列接続される抵抗分圧回路の分圧レベルと、
抵抗および定電圧素子からなる基準電圧回路の基準電圧
レベルとを比較入力とした比較器からなる電圧検出回路
の出力をマイクロコンピュータのリセット端子に接続し
たリセット回路において、上記定電圧素子の負側に電源
電圧を負電圧に、　　変換するＤＣ−ＤＣコンバータを
接続したことを特徴トスるマイクロコンピュータのリセ
ット回路。"Power supply" = voltage division level of the resistor voltage divider circuit connected in series,
In a reset circuit in which the output of a voltage detection circuit consisting of a comparator whose comparison input is the reference voltage level of a reference voltage circuit consisting of a resistor and a constant voltage element is connected to the reset terminal of a microcomputer, a voltage is applied to the negative side of the constant voltage element. A microcomputer reset circuit characterized by connecting a DC-DC converter that converts the power supply voltage to a negative voltage.
JP17728281U 1981-11-28 1981-11-28 Microcomputer reset circuit Granted JPS5881637U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP17728281U JPS5881637U (en) 1981-11-28 1981-11-28 Microcomputer reset circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP17728281U JPS5881637U (en) 1981-11-28 1981-11-28 Microcomputer reset circuit

Publications (2)

Publication Number Publication Date
JPS5881637U true JPS5881637U (en) 1983-06-02
JPS6243391Y2 JPS6243391Y2 (en) 1987-11-11

Family

ID=29971021

Family Applications (1)

Application Number Title Priority Date Filing Date
JP17728281U Granted JPS5881637U (en) 1981-11-28 1981-11-28 Microcomputer reset circuit

Country Status (1)

Country Link
JP (1) JPS5881637U (en)

Also Published As

Publication number Publication date
JPS6243391Y2 (en) 1987-11-11

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