JPH0433U - - Google Patents
Info
- Publication number
- JPH0433U JPH0433U JP4087290U JP4087290U JPH0433U JP H0433 U JPH0433 U JP H0433U JP 4087290 U JP4087290 U JP 4087290U JP 4087290 U JP4087290 U JP 4087290U JP H0433 U JPH0433 U JP H0433U
- Authority
- JP
- Japan
- Prior art keywords
- memory
- power supply
- backup power
- electronic device
- backup
- 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
- 238000010586 diagram Methods 0.000 description 3
Landscapes
- Power Sources (AREA)
Description
第１図は本考案に係る電子機器の一実施例の構
成図、第２図は第１図のバツクアツプ電源制御部
の具体例を示す図、第３図は第１図、第２図に示
す電子機器の処理流れを示すフローチヤート、第
４図ａ乃至ｃは第１図、第２図に示す電子機器に
おけるメモリのバツクアツプ動作例を説明するた
めの図である。
１……プロセツサ、２……ＲＯＭ、３……メモ
リ（ＲＡＭ）、１０……バツクアツプ電源、１１
……バツクアツプ電源制御部、２１……フリツプ
フロツプ、ＴＲ１乃至ＴＲｎ……トランジスタ、
ＡＲ１乃至ＡＲｎ……メモリの分割されたエリア
、ＳＥＬ（Ｌ１乃至Ｌｎ）……選択データ、Ｌ１
′乃至Ｌｎ′……ラツチ出力。
FIG. 1 is a block diagram of an embodiment of an electronic device according to the present invention, FIG. 2 is a diagram showing a specific example of the backup power supply control section shown in FIG. 1, and FIG. Flowcharts illustrating the processing flow of the electronic device, FIGS. 4a to 4c are diagrams for explaining an example of a memory backup operation in the electronic device shown in FIGS. 1 and 2. 1...Processor, 2...ROM, 3...Memory (RAM), 10...Backup power supply, 11
...backup power supply control unit, 21...flip-flop, TR1 to TRn ...transistor,
AR 1 to AR n ...Divided areas of memory, SEL (L 1 to L n )... Selection data, L 1
' to L n '...Latch output.
Claims (1)
モリをバツクアツプするためのバツクアツプ電源
と、前記メモリの複数のエリアのうちどのエリア
をバツクアツプするかを決定選択し、選択された
エリアのみを前記アツクアツプ電源によつてバツ
クアツプするよう制御する制御手段とを備えてい
ることを特徴とする電子機器。 A memory that is divided into a plurality of areas, a backup power supply for backing up the memory, a decision and selection which area of the memory is to be backed up, and a backup power supply for only the selected area. 1. An electronic device comprising: control means for controlling backup according to the method of the invention.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4087290U JPH0433U (en) | 1990-04-17 | 1990-04-17 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4087290U JPH0433U (en) | 1990-04-17 | 1990-04-17 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0433U true JPH0433U (en) | 1992-01-06 |
Family
ID=31551045
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4087290U Pending JPH0433U (en) | 1990-04-17 | 1990-04-17 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0433U (en) |
-
1990
- 1990-04-17 JP JP4087290U patent/JPH0433U/ja active Pending