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
Links
- 239000003990 capacitor Substances 0.000 claims description 4
- 238000007599 discharging Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 1
Description
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)
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.
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)
| 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 |
-
1988
- 1988-06-16 JP JP7890388U patent/JPH022734U/ja active Pending
Cited By (3)
| 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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