JPS5819330U - Volatile memory power supply circuit - Google Patents
Volatile memory power supply circuitInfo
- Publication number
- JPS5819330U JPS5819330U JP11335981U JP11335981U JPS5819330U JP S5819330 U JPS5819330 U JP S5819330U JP 11335981 U JP11335981 U JP 11335981U JP 11335981 U JP11335981 U JP 11335981U JP S5819330 U JPS5819330 U JP S5819330U
- Authority
- JP
- Japan
- Prior art keywords
- power supply
- volatile memory
- supply circuit
- memory power
- memory
- 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 description 1
- 238000010586 diagram Methods 0.000 description 1
Landscapes
- Techniques For Improving Reliability Of Storages (AREA)
- Stand-By Power Supply Arrangements (AREA)
- Power Sources (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ｉ、 ２． ３図は、従来のバッテリーバックアッ
プによるメモリ用電源回路を示し、第４，５゜６図は本
考案の実施例を示す回路図である。
図中１はシステム電源、２はバッテリー電源、３〜７は
トランジスタ、８〜１６は抵抗、１７は電解コンデンサ
ー、１８〜・・２０はダイオード、２１は揮発性メモリ
である。Part i, 2. FIG. 3 shows a conventional memory power supply circuit using battery backup, and FIGS. 4, 5, and 6 are circuit diagrams showing an embodiment of the present invention. In the figure, 1 is a system power supply, 2 is a battery power supply, 3 to 7 are transistors, 8 to 16 are resistors, 17 is an electrolytic capacitor, 18 to 20 are diodes, and 21 is a volatile memory.
Claims (1)
たメモリシステムにおいて、メモリー電源としてのシス
テム電源とバックアップ用電源との切換を差動増幅器を
介在させて構成したことを特徴とする揮発性メモリ用電
源回路。A power supply for volatile memory, in a memory system aimed at retaining data in volatile memory using CMO3, etc., characterized in that switching between a system power supply as a memory power supply and a backup power supply is configured by interposing a differential amplifier. circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11335981U JPS5819330U (en) | 1981-07-30 | 1981-07-30 | Volatile memory power supply circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11335981U JPS5819330U (en) | 1981-07-30 | 1981-07-30 | Volatile memory power supply circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5819330U true JPS5819330U (en) | 1983-02-05 |
Family
ID=29907663
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11335981U Pending JPS5819330U (en) | 1981-07-30 | 1981-07-30 | Volatile memory power supply circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5819330U (en) |
-
1981
- 1981-07-30 JP JP11335981U patent/JPS5819330U/en active Pending
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