JPS6356426U - - Google Patents
Info
- Publication number
- JPS6356426U JPS6356426U JP15038186U JP15038186U JPS6356426U JP S6356426 U JPS6356426 U JP S6356426U JP 15038186 U JP15038186 U JP 15038186U JP 15038186 U JP15038186 U JP 15038186U JP S6356426 U JPS6356426 U JP S6356426U
- Authority
- JP
- Japan
- Prior art keywords
- main power
- power supply
- battery
- memory
- warning
- 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
Links
- 230000014759 maintenance of location Effects 0.000 claims 1
- 238000012544 monitoring process Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
Landscapes
- Power Sources (AREA)
- Static Random-Access Memory (AREA)
- Techniques For Improving Reliability Of Storages (AREA)
Description
第１図は本考案の一実施例の構成を示すブロツ
ク図、第２図は従来のメモリ回路の構成の一例を
示すブロツク図である。
１……マイクロプロセツサ、２……（プログラ
ム記憶用）メモリ素子、３……（回路情報記憶用
）メモリ素子、４……（ＲＳ―２３２Ｃ用）通信
制御ＬＳＩ、５……インターフエイスドライバ／
レシーバ、６……（ＬＡＮ―ＢＵＳ用）通信制御
ＬＳＩ、８……リチウム電池、９，１９……電源
回路、１０，１５……主電源スイツチ、１１……
低電圧ダイオード、１２……可変抵抗器、１３…
…比較回路、１６……制御回路。
FIG. 1 is a block diagram showing the configuration of an embodiment of the present invention, and FIG. 2 is a block diagram showing an example of the configuration of a conventional memory circuit. 1...Microprocessor, 2...Memory element (for program storage), 3...Memory element (for circuit information storage), 4...Communication control LSI (for RS-232C), 5...Interface driver/
Receiver, 6... (for LAN-BUS) communication control LSI, 8... Lithium battery, 9, 19... Power supply circuit, 10, 15... Main power switch, 11...
Low voltage diode, 12... Variable resistor, 13...
...Comparison circuit, 16...Control circuit.
Claims (1)
る期間における記憶保持動作に補助電源が必要な
メモリと、前記主電源が遮断状態になつたとき前
記メモリに補助電源を供給するバツテリと、前記
バツテリの出力電圧が基準電圧を下回つたとき警
告信号を出力するバツテリ出力電圧監視回路と、
前記警告信号が出力されている期間は前記主電源
スイツチによる主電源の遮断動作を無効化して前
記主電源の投入状態を継続させる電源制御回路と
を備えてなることを特徴とするメモリ回路。 (2) 警告信号が出力されたとき、バツテリの交
換を促す警告動作をする警告発生手段を備えてい
る実用新案登録請求の範囲第１項記載のメモリ回
路。[Claims for Utility Model Registration] (1) A main power switch, a memory that requires an auxiliary power supply for memory retention operation while the main power is on, and a a battery that supplies auxiliary power; a battery output voltage monitoring circuit that outputs a warning signal when the output voltage of the battery falls below a reference voltage;
A memory circuit comprising: a power supply control circuit that disables the main power supply cutoff operation by the main power switch and continues the main power supply during a period in which the warning signal is outputted. (2) The memory circuit according to claim 1, which is provided with a warning generating means that performs a warning operation to prompt battery replacement when a warning signal is output.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1986150381U JPH054025Y2 (en) | 1986-09-30 | 1986-09-30 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1986150381U JPH054025Y2 (en) | 1986-09-30 | 1986-09-30 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6356426U true JPS6356426U (en) | 1988-04-15 |
| JPH054025Y2 JPH054025Y2 (en) | 1993-02-01 |
Family
ID=31066473
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1986150381U Expired - Lifetime JPH054025Y2 (en) | 1986-09-30 | 1986-09-30 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH054025Y2 (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59129352U (en) * | 1983-02-18 | 1984-08-30 | 三洋電機株式会社 | Electronic device power supply |
| JPS60158361A (en) * | 1984-01-30 | 1985-08-19 | Matsushita Electric Ind Co Ltd | Power source backup apparatus for electronic appliance |
-
1986
- 1986-09-30 JP JP1986150381U patent/JPH054025Y2/ja not_active Expired - Lifetime
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59129352U (en) * | 1983-02-18 | 1984-08-30 | 三洋電機株式会社 | Electronic device power supply |
| JPS60158361A (en) * | 1984-01-30 | 1985-08-19 | Matsushita Electric Ind Co Ltd | Power source backup apparatus for electronic appliance |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH054025Y2 (en) | 1993-02-01 |