JPH022734U - - Google Patents

Info

Publication number
JPH022734U
JPH022734U JP7890388U JP7890388U JPH022734U JP H022734 U JPH022734 U JP H022734U JP 7890388 U JP7890388 U JP 7890388U JP 7890388 U JP7890388 U JP 7890388U JP H022734 U JPH022734 U JP H022734U
Authority
JP
Japan
Prior art keywords
power supply
supply line
volatile memory
capacitor
board
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
JP7890388U
Other languages
Japanese (ja)
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 filed Critical
Priority to JP7890388U priority Critical patent/JPH022734U/ja
Publication of JPH022734U publication Critical patent/JPH022734U/ja
Pending legal-status Critical Current

Links

Description

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

第1図は本考案に係わる強制クリア回路が適用
されたマイクロコントローラシステムの構成を示
す説明図、第2図は従来の強制クリア回路が起用
されたマイクロコントローラシステムの構成を示
す説明図である。 1……制御用カード、3……電源カード、4…
…バツテリ、101……通常電源ライン、102
……バツテリ電源ライン、104,109……リ
ツプル除去用コンデンサ、105,106……逆
流阻止ダイオード、107……共通給電ライン、
108……RAM、112……リレー常閉接点、
113……リレーコイル。
FIG. 1 is an explanatory diagram showing the configuration of a microcontroller system to which a forced clear circuit according to the present invention is applied, and FIG. 2 is an explanatory diagram showing the configuration of a microcontroller system to which a conventional forced clear circuit is applied. 1... Control card, 3... Power supply card, 4...
... Battery, 101 ... Normal power line, 102
... Battery power supply line, 104, 109 ... Ripple removal capacitor, 105, 106 ... Reverse current blocking diode, 107 ... Common power supply line,
108...RAM, 112...Relay normally closed contact,
113...Relay coil.

Claims (1)

【実用新案登録請求の範囲】 コネクタを介して基板外より給電される通常電
源ライン及びバツテリ電源ラインと、前記両電源
ラインからそれぞれ逆流素子ダイオードを介して
並列に給電される揮発性メモリと、前記揮発性メ
モリへの共通給電ラインに介挿されたリツプル除
去等のためのコンデンサと、を有する揮発性メモ
リ搭載基板において、 前記共通給電ラインとアース間に前記コンデン
サの放電路を形成するリレーの常閉接点を介挿す
るとともに、該リレーのコイルを前記バツテリ電
源ラインに直結し、 前記コネクタを介して基板を抜取ると同時に、
前記常閉接点の復帰によりコンデンサを瞬時に放
電させて、前記揮発性メモリを強制的にクリアす
ること、 を特徴とする揮発性メモリ搭載基板におけるメモ
リ強制クリア回路。
[Claims for Utility Model Registration] A normal power supply line and a battery power supply line that are supplied with power from outside the board via a connector, a volatile memory that is supplied with power in parallel from both of the power supply lines through reverse current element diodes, and the aforementioned In a volatile memory mounting board having a capacitor for ripple removal etc. inserted in a common power supply line to the volatile memory, a relay that forms a discharge path for the capacitor between the common power supply line and the ground While inserting a closing contact, the coil of the relay is directly connected to the battery power supply line, and at the same time, the board is removed via the connector,
A memory forced clear circuit in a volatile memory mounting board, characterized in that the volatile memory is forcibly cleared by instantly discharging the capacitor upon return of the normally closed contact.
JP7890388U 1988-06-16 1988-06-16 Pending JPH022734U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7890388U JPH022734U (en) 1988-06-16 1988-06-16

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7890388U JPH022734U (en) 1988-06-16 1988-06-16

Publications (1)

Publication Number Publication Date
JPH022734U true JPH022734U (en) 1990-01-10

Family

ID=31303794

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7890388U Pending JPH022734U (en) 1988-06-16 1988-06-16

Country Status (1)

Country Link
JP (1) JPH022734U (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52930U (en) * 1975-06-21 1977-01-06
JPS6280931U (en) * 1985-11-11 1987-05-23
JPH0571104A (en) * 1991-04-10 1993-03-23 Nippon Mentetsuku Kk Overcoat protective tube of laid cable

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52930U (en) * 1975-06-21 1977-01-06
JPS6280931U (en) * 1985-11-11 1987-05-23
JPH0571104A (en) * 1991-04-10 1993-03-23 Nippon Mentetsuku Kk Overcoat protective tube of laid cable

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