JPH0454099U - - Google Patents
Info
- Publication number
- JPH0454099U JPH0454099U JP9541890U JP9541890U JPH0454099U JP H0454099 U JPH0454099 U JP H0454099U JP 9541890 U JP9541890 U JP 9541890U JP 9541890 U JP9541890 U JP 9541890U JP H0454099 U JPH0454099 U JP H0454099U
- Authority
- JP
- Japan
- Prior art keywords
- backup
- circuit board
- printed circuit
- battery
- sram
- 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
- Static Random-Access Memory (AREA)
Description
第１図、第２図はこの考案の一実施例による揮
発性メモリバツクアツプを説明する図、第３図は
従来の揮発性メモリ搭載プリント基板を示す図、
第４図は従来のＲＡＭカセツト型プリント基板を
示す図である。
図において、１はプリント基板、２はＳＲＡＭ
、３はＳＲＡＭバツクアツプ用電気二重層コンデ
ンサ、４はコネクタ、５はメモリバツクアツプ用
小型プリント基板、６はＮｉ−Ｃｄバツテリーで
ある。なお、図中、同一符号は同一、または相当
部分を示す。
FIGS. 1 and 2 are diagrams illustrating volatile memory backup according to an embodiment of the invention, and FIG. 3 is a diagram showing a conventional volatile memory-mounted printed circuit board.
FIG. 4 is a diagram showing a conventional RAM cassette type printed circuit board. In the figure, 1 is a printed circuit board, 2 is an SRAM
, 3 is an electric double layer capacitor for SRAM backup, 4 is a connector, 5 is a small printed circuit board for memory backup, and 6 is a Ni-Cd battery. In addition, in the figures, the same reference numerals indicate the same or equivalent parts.
Claims (1)
タテイツクランダムアクセスメモリＳＲＡＭと、
ＳＲＡＭバツクアツプ用の電気二重層コンデンサ
を実装したプリント基板にＮｉ−Ｃｄバツテリー
の様な二次電池を実装したメモリバツクアツプ用
小型プリント基板を接続することにより、長期間
のメモリバツクアツプが可能なことを特徴とする
揮発性メモリバツクアツプ用プリント基板。 A static random access memory SRAM capable of battery backup with low current consumption;
Long-term memory backup is possible by connecting a small printed circuit board for memory backup equipped with a secondary battery such as a Ni-Cd battery to a printed circuit board mounted with an electric double layer capacitor for SRAM backup. A printed circuit board for volatile memory backup featuring:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9541890U JPH0454099U (en) | 1990-09-11 | 1990-09-11 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9541890U JPH0454099U (en) | 1990-09-11 | 1990-09-11 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0454099U true JPH0454099U (en) | 1992-05-08 |
Family
ID=31834125
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9541890U Pending JPH0454099U (en) | 1990-09-11 | 1990-09-11 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0454099U (en) |
-
1990
- 1990-09-11 JP JP9541890U patent/JPH0454099U/ja active Pending
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