JPS5814174U - Power outage detection circuit for memory protection - Google Patents
Power outage detection circuit for memory protectionInfo
- Publication number
- JPS5814174U JPS5814174U JP10748381U JP10748381U JPS5814174U JP S5814174 U JPS5814174 U JP S5814174U JP 10748381 U JP10748381 U JP 10748381U JP 10748381 U JP10748381 U JP 10748381U JP S5814174 U JPS5814174 U JP S5814174U
- Authority
- JP
- Japan
- Prior art keywords
- detection circuit
- circuit
- memory protection
- power line
- power outage
- 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
Landscapes
- Measurement Of Current Or Voltage (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
第１図は本考案による好ましい一具体例の回路図、第２
図は第１図に示す回路の動作説明図である。
２・・・直流電源線、３・・・記憶装置、４・・・中央
処理装置、５・・・大容量コンデンサ、９・・・比較器
。FIG. 1 is a circuit diagram of a preferred embodiment of the present invention;
This figure is an explanatory diagram of the operation of the circuit shown in FIG. 1. 2... DC power supply line, 3... Storage device, 4... Central processing unit, 5... Large capacity capacitor, 9... Comparator.
Claims (1)
線と、直流電源線に並列に接続された大容量コンデンサ
と、直流電源線の所定値以下の電圧降下を検出する検出
回路と、検出回路からの信号により記憶装置を制御する
回路への割込信号と記憶装着への記憶保護信号とを発生
する回路とからなり、大容量コンデンサの容量は、記憶
保護信号により記憶装置が記憶保護状態に設定されるま
で、記憶装置を制御する回路が正常に動作するように直
流電源線の電圧が維持される値であることを特徴とする
記憶保護用停電検知回路。A DC power line that supplies operating power to the circuit that controls the storage device, a large capacitor connected in parallel to the DC power line, a detection circuit that detects a voltage drop below a predetermined value on the DC power line, and a detection circuit. It consists of a circuit that generates an interrupt signal to the circuit that controls the storage device and a memory protection signal to the storage device in response to a signal from the large capacitor. 1. A power outage detection circuit for memory protection, characterized in that the voltage of a DC power line is maintained at a value such that a circuit controlling a memory device operates normally until the voltage is set.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10748381U JPS5814174U (en) | 1981-07-20 | 1981-07-20 | Power outage detection circuit for memory protection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10748381U JPS5814174U (en) | 1981-07-20 | 1981-07-20 | Power outage detection circuit for memory protection |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5814174U true JPS5814174U (en) | 1983-01-28 |
Family
ID=29901915
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10748381U Pending JPS5814174U (en) | 1981-07-20 | 1981-07-20 | Power outage detection circuit for memory protection |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5814174U (en) |
-
1981
- 1981-07-20 JP JP10748381U patent/JPS5814174U/en active Pending
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