JPS58190742U - Battery voltage monitoring circuit - Google Patents

Battery voltage monitoring circuit

Info

Publication number
JPS58190742U
JPS58190742U JP8805082U JP8805082U JPS58190742U JP S58190742 U JPS58190742 U JP S58190742U JP 8805082 U JP8805082 U JP 8805082U JP 8805082 U JP8805082 U JP 8805082U JP S58190742 U JPS58190742 U JP S58190742U
Authority
JP
Japan
Prior art keywords
battery voltage
monitoring circuit
voltage monitoring
microcomputer
voltage
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
Application number
JP8805082U
Other languages
Japanese (ja)
Inventor
和雄 田村
Original Assignee
東北金属工業株式会社
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 東北金属工業株式会社 filed Critical 東北金属工業株式会社
Priority to JP8805082U priority Critical patent/JPS58190742U/en
Publication of JPS58190742U publication Critical patent/JPS58190742U/en
Pending legal-status Critical Current

Links

Landscapes

  • Stand-By Power Supply Arrangements (AREA)
  • Electronic Switches (AREA)
  • Measurement Of Current Or Voltage (AREA)
  • Power Sources (AREA)
  • Techniques For Improving Reliability Of Storages (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) [Abstract] 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ｃｉ従来の電池電圧監視回路の構成を示した回路
図、第２図は本考案による電池電圧監視回路の一実施例
の構成を示した回路図、第３図は本考案の動作を説明す
るための波形図である。 記号の説明＝Ｄ□、Ｄ１ｏは逆流防止ダイオード、Ｒ工
。 Ｒ２，Ｒ１０，Ｒ１１，Ｒ１２，Ｒ，は抵抗、ＢＡＴは
充電式−電池、ＳＷはスイッチ、Ｄ２はツェナーダイオ
ード、Ｔｒはトランジスタ、Ｄ１□は放電用ダイオード
、ｖ。 は電源電圧、ＶＢは電池電圧、ＳＩＧは電池電圧異常信
号、ＣＰＵはマイクロコンピュータをそれぞれあられし
ている。FIG. 1 is a circuit diagram showing the configuration of a conventional battery voltage monitoring circuit, FIG. 2 is a circuit diagram showing the configuration of an embodiment of the battery voltage monitoring circuit according to the present invention, and FIG. 3 is a circuit diagram showing the operation of the present invention. FIG. 3 is a waveform diagram for explanation. Explanation of symbols = D□, D1o are backflow prevention diodes, R construction. R2, R10, R11, R12, R are resistors, BAT is a rechargeable battery, SW is a switch, D2 is a Zener diode, Tr is a transistor, D1□ is a discharge diode, v. is the power supply voltage, VB is the battery voltage, SIG is the battery voltage abnormality signal, and CPU is the microcomputer.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 停電時にメモリの記憶情報を保護する充電式電池を備え
ているマイクロコンピュータにおいて、電源端子とアー
ス間の前記充電式電池の設けられたパスに挿入されて、
−電源が投入された時、前記充電式電池の電圧が前記マ
イクロコンピュータのメモリの記憶情報を保護し得ない
電圧まで低下している場合に制御信号を発する手段と、
該制御信号を受けると前記マイクロコンピュータを初期
状態に復帰させる電池電圧異常信号を発する手段とを有
する電池電圧監視回路。In a microcomputer equipped with a rechargeable battery that protects information stored in memory during a power outage, the rechargeable battery is inserted into a path between a power supply terminal and ground,
- means for issuing a control signal if, when the power is turned on, the voltage of the rechargeable battery has dropped to a voltage that cannot protect the information stored in the memory of the microcomputer;
A battery voltage monitoring circuit comprising means for generating a battery voltage abnormality signal for returning the microcomputer to an initial state upon receiving the control signal.
JP8805082U 1982-06-15 1982-06-15 Battery voltage monitoring circuit Pending JPS58190742U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8805082U JPS58190742U (en) 1982-06-15 1982-06-15 Battery voltage monitoring circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8805082U JPS58190742U (en) 1982-06-15 1982-06-15 Battery voltage monitoring circuit

Publications (1)

Publication Number Publication Date
JPS58190742U true JPS58190742U (en) 1983-12-19

Family

ID=30096740

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8805082U Pending JPS58190742U (en) 1982-06-15 1982-06-15 Battery voltage monitoring circuit

Country Status (1)

Country Link
JP (1) JPS58190742U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01128113A (en) * 1987-11-12 1989-05-19 Kyushu Hitachi Maxell Ltd Compact electrical equipment

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55153007A (en) * 1979-05-17 1980-11-28 Omron Tateisi Electronics Co Sequence controller
JPS56111195A (en) * 1980-02-01 1981-09-02 Toshiba Corp Memory system
JPS5742430B2 (en) * 1975-02-20 1982-09-08

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5742430B2 (en) * 1975-02-20 1982-09-08
JPS55153007A (en) * 1979-05-17 1980-11-28 Omron Tateisi Electronics Co Sequence controller
JPS56111195A (en) * 1980-02-01 1981-09-02 Toshiba Corp Memory system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01128113A (en) * 1987-11-12 1989-05-19 Kyushu Hitachi Maxell Ltd Compact electrical equipment

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