JPS6488729A - System clock supply device - Google Patents
System clock supply deviceInfo
- Publication number
- JPS6488729A JPS6488729A JP62243907A JP24390787A JPS6488729A JP S6488729 A JPS6488729 A JP S6488729A JP 62243907 A JP62243907 A JP 62243907A JP 24390787 A JP24390787 A JP 24390787A JP S6488729 A JPS6488729 A JP S6488729A
- Authority
- JP
- Japan
- Prior art keywords
- system clock
- circuit
- electronic circuit
- frequency
- supply device
- 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
Abstract
PURPOSE:To secure the maximum working capacity of a digital electronic circuit by deciding an optimum working frequency from the ambient temperature of said electronic circuit for production of a system clock. CONSTITUTION:The ambient temperature of a digital electronic circuit 1 is detected by a sensor 2 and this detecting result is converted into the digital signals by an A/D converter 3. Then these digital signals are supplied to a PROM 5 and the information on the optimum working frequency of the circuit 1 is sent to an oscillator OSC8 from the PROM 5 via a D/A converter 7. Thus a system clock is produced from the OSC8 in a frequency in response to the frequency information. This system clock is sent to the circuit 1 and the circuit 1 is actuated by the system clock. Thus the maximum working capacity is secured for a digital electronic circuit.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62243907A JPS6488729A (en) | 1987-09-30 | 1987-09-30 | System clock supply device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62243907A JPS6488729A (en) | 1987-09-30 | 1987-09-30 | System clock supply device |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6488729A true JPS6488729A (en) | 1989-04-03 |
Family
ID=17110777
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62243907A Pending JPS6488729A (en) | 1987-09-30 | 1987-09-30 | System clock supply device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6488729A (en) |
-
1987
- 1987-09-30 JP JP62243907A patent/JPS6488729A/en active Pending
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JPS5695738A (en) | Method and apparatus for indicating and disposing of abnormal condition | |
DE68927397T2 (en) | SENSOR AND CONVERTER DEVICE | |
DE68922079D1 (en) | Electronic wake-up signal generator. | |
ES2002948A6 (en) | Low-powered remote sensor and telephone line transmitter. | |
CH629061GA3 (en) | ||
EP0763825A3 (en) | Data detection apparatus | |
EP0282202A3 (en) | Preamble search and synchronizer circuit | |
DE3768068D1 (en) | CIRCUIT ARRANGEMENT FOR GENERATING AN OUTPUT SIGNAL NOT DEPENDING ON THE TEMPERATURE. | |
JPS6488729A (en) | System clock supply device | |
FR2604573B1 (en) | ELECTRONIC DEVICE GENERATING CONSISTENT OSCILLATIONS | |
EP0321575A4 (en) | Plc apparatus | |
JPS6483181A (en) | Seismic sensor | |
JPS55166088A (en) | Electronic watch with alarm and illuminator | |
JPS53104276A (en) | Electronic watch | |
JPS556609A (en) | Data input system | |
JPS5533640A (en) | Electronic watch with alarm | |
DE3060712D1 (en) | Phase-locked oscillator circuit and system for generating a clock signal using this circuit | |
CA2000756A1 (en) | Method of making a crystal oscillator desensitized to acceleration fields | |
JPS5238261A (en) | Electronic watch | |
GB1539712A (en) | Monolithic integrated circuit for battery-operated alarm clocks | |
JPS5454082A (en) | Automatic tester for microwave oscillator | |
FR2410808B1 (en) | DEVICE AND METHOD FOR PRODUCING A DIGITAL SIGNAL AT THE OUTPUT OF A DISPLACEMENT TRANSDUCER | |
JPS56119992A (en) | Dynamic type fixed memory device | |
JPS554679A (en) | Constitution control system | |
JPS6463829A (en) | Temperature measuring apparatus |