JPS57203338A - Oscillating device - Google Patents
Oscillating deviceInfo
- Publication number
- JPS57203338A JPS57203338A JP56088986A JP8898681A JPS57203338A JP S57203338 A JPS57203338 A JP S57203338A JP 56088986 A JP56088986 A JP 56088986A JP 8898681 A JP8898681 A JP 8898681A JP S57203338 A JPS57203338 A JP S57203338A
- Authority
- JP
- Japan
- Prior art keywords
- signal
- oscillator
- clock
- detects
- rise
- 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.)
- Granted
Links
- 230000010355 oscillation Effects 0.000 abstract 2
- 230000005540 biological transmission Effects 0.000 abstract 1
- 239000010453 quartz Substances 0.000 abstract 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 abstract 1
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03L—AUTOMATIC CONTROL, STARTING, SYNCHRONISATION OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
- H03L7/00—Automatic control of frequency or phase; Synchronisation
Landscapes
- Oscillators With Electromechanical Resonators (AREA)
- Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
Abstract
PURPOSE:To prevent the output of a clock signal when an oscillation is unstable, by controlling the generation of the clock signal from an oscillator by means of a detecting circuit that detects both the rise and fall of an external input signal and then driving a microprocessor. CONSTITUTION:An oscillator 2 has the oscillation with the driving of a quartz oscillator 1 and generates a clock signal 11 having a prescribed frequency necessary for a microprocessor 10. At the same time, the oscillator 2 receives the clock start signal from a rise detecting circuit 4 that detects the rise of an external input signal and then starts the generation of the signal 11. After this, a transmission control circuit 8 supplies the signal 11 given from the oscillator 2 to the processor 10 in the form of a working clock signal 9 for a period during which a clock supply signal 7 is fed from a fall detecting circuit 5 that detects the fall of the external input.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP56088986A JPS57203338A (en) | 1981-06-10 | 1981-06-10 | Oscillating device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP56088986A JPS57203338A (en) | 1981-06-10 | 1981-06-10 | Oscillating device |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS57203338A true JPS57203338A (en) | 1982-12-13 |
JPH0230210B2 JPH0230210B2 (en) | 1990-07-05 |
Family
ID=13958117
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP56088986A Granted JPS57203338A (en) | 1981-06-10 | 1981-06-10 | Oscillating device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS57203338A (en) |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5176066A (en) * | 1974-12-26 | 1976-07-01 | Omron Tateisi Electronics Co | |
JPS52143744A (en) * | 1976-05-26 | 1977-11-30 | Hitachi Ltd | Pulse operation circuit |
JPS5662428A (en) * | 1979-10-29 | 1981-05-28 | Nec Corp | Oscillator |
-
1981
- 1981-06-10 JP JP56088986A patent/JPS57203338A/en active Granted
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5176066A (en) * | 1974-12-26 | 1976-07-01 | Omron Tateisi Electronics Co | |
JPS52143744A (en) * | 1976-05-26 | 1977-11-30 | Hitachi Ltd | Pulse operation circuit |
JPS5662428A (en) * | 1979-10-29 | 1981-05-28 | Nec Corp | Oscillator |
Also Published As
Publication number | Publication date |
---|---|
JPH0230210B2 (en) | 1990-07-05 |
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