JPS6434025A - Electronic equipment - Google Patents
Electronic equipmentInfo
- Publication number
- JPS6434025A JPS6434025A JP62189956A JP18995687A JPS6434025A JP S6434025 A JPS6434025 A JP S6434025A JP 62189956 A JP62189956 A JP 62189956A JP 18995687 A JP18995687 A JP 18995687A JP S6434025 A JPS6434025 A JP S6434025A
- Authority
- JP
- Japan
- Prior art keywords
- control circuit
- microcomputer
- data
- external memory
- power source
- 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
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Landscapes
- Mobile Radio Communication Systems (AREA)
Abstract
PURPOSE:To exactly hold a stored content without being affected by the ON/ OFF switching of a power source, by setting a state where no change of a data signal on a data bus on a control means side affects on the stored content of a storage means at the time of stopping the power supply to the control means. CONSTITUTION:A power source control circuit 27, at the time of detecting the turning OFF of a switch 26, informs the fact to a microcomputer 22. The microcomputer 22 holds it by itself, and sends required data to an external memory 21 via an interface control circuit 24 hereafter, and stores the data in the external memory 21, The power source control circuit 27 sets the interface control circuit 24 at the state where no change of the data signal on the data bus on the microcomputer 22 side affects on the stored content of the external memory 21. After that, the power source control circuit 27 stops the the power supply to the microcomputer 22. In such a way, it is possible to prevent the data held in the external memory 21 once from being erased.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62189956A JPS6434025A (en) | 1987-07-29 | 1987-07-29 | Electronic equipment |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62189956A JPS6434025A (en) | 1987-07-29 | 1987-07-29 | Electronic equipment |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6434025A true JPS6434025A (en) | 1989-02-03 |
Family
ID=16250005
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62189956A Pending JPS6434025A (en) | 1987-07-29 | 1987-07-29 | Electronic equipment |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6434025A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0629902A (en) * | 1992-07-13 | 1994-02-04 | Fujitsu Ltd | Mobile radio equipment power supply on/off control circuit |
-
1987
- 1987-07-29 JP JP62189956A patent/JPS6434025A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0629902A (en) * | 1992-07-13 | 1994-02-04 | Fujitsu Ltd | Mobile radio equipment power supply on/off control circuit |
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