JPS62199826U - - Google Patents
Info
- Publication number
- JPS62199826U JPS62199826U JP8693586U JP8693586U JPS62199826U JP S62199826 U JPS62199826 U JP S62199826U JP 8693586 U JP8693586 U JP 8693586U JP 8693586 U JP8693586 U JP 8693586U JP S62199826 U JPS62199826 U JP S62199826U
- Authority
- JP
- Japan
- Prior art keywords
- voltage
- power supply
- backup
- diode
- battery
- 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
- 239000004065 semiconductor Substances 0.000 claims description 3
- 239000003990 capacitor Substances 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 1
Landscapes
- Techniques For Improving Reliability Of Storages (AREA)
- Power Sources (AREA)
- Static Random-Access Memory (AREA)
Description
添付図面第１図は本考案のメモリバツクアツプ
回路の実施例を示す回路図である。
なお図面に用いた符号において、１……電源、
２……半導体メモリ、３……電源スイツチ、４…
…電源ライン、５……バツクアツプ回路、Ｂ……
一次電池、Ｃ……コンデンサ、Ｄ１，Ｄ２……ダ
イオード、１Ｅ……電源電圧、ＢＥ……一次電池
の電圧、である。
FIG. 1 of the accompanying drawings is a circuit diagram showing an embodiment of the memory backup circuit of the present invention. In addition, in the symbols used in the drawings, 1...power supply,
2...Semiconductor memory, 3...Power switch, 4...
...Power line, 5... Backup circuit, B...
Primary battery, C...capacitor, D1 , D2 ...diode, 1E...power supply voltage, BE...voltage of primary battery.
Claims (1)
介してバツクアツプ電圧を供給する電池と、 電源電圧によつて充電され、電源オフ時に第２
のダイオードを介して上記半導体メモリの電源端
子に放電電圧を供給するバツクアツプ用コンデン
サとを備え、 上記電池の電圧を上記電源電圧より低くしたこ
とを特徴とするメモリバツクアツプ回路。[Claims for Utility Model Registration] A battery that supplies a backup voltage to a power supply terminal of a semiconductor memory via a first diode;
A memory backup circuit comprising: a backup capacitor that supplies a discharge voltage to a power supply terminal of the semiconductor memory through a diode, the voltage of the battery being lower than the power supply voltage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8693586U JPS62199826U (en) | 1986-06-07 | 1986-06-07 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8693586U JPS62199826U (en) | 1986-06-07 | 1986-06-07 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62199826U true JPS62199826U (en) | 1987-12-19 |
Family
ID=30943695
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8693586U Pending JPS62199826U (en) | 1986-06-07 | 1986-06-07 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62199826U (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60249833A (en) * | 1984-05-25 | 1985-12-10 | 三菱電機株式会社 | Memory backup circuit |
-
1986
- 1986-06-07 JP JP8693586U patent/JPS62199826U/ja active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60249833A (en) * | 1984-05-25 | 1985-12-10 | 三菱電機株式会社 | Memory backup circuit |