JPS6486708A - Oscillating circuit - Google Patents
Oscillating circuitInfo
- Publication number
- JPS6486708A JPS6486708A JP62244931A JP24493187A JPS6486708A JP S6486708 A JPS6486708 A JP S6486708A JP 62244931 A JP62244931 A JP 62244931A JP 24493187 A JP24493187 A JP 24493187A JP S6486708 A JPS6486708 A JP S6486708A
- Authority
- JP
- Japan
- Prior art keywords
- time constant
- time
- integrating
- circuit
- output
- 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 correct the oscillation frequency after production by using a time constant switching means to set the time constant of an integrating circuit connected between inverters based on information of the time constant stored and held in a storage means. CONSTITUTION:When transfer control signals S1-S4 and the inverse of S1-S4 are inputted to TRSs 21-24 of integrating circuits 5, 6, and 7, resistance values and capacity values of integrating circuits 5, 6, and 7 are determined and time constants are determined. Meanwhile, the output of an inverter 1 is delayed by a time based on the time constant of the integrating circuit 5 and is outputted from an inverter 2 and is delayed furthermore by a time based on the time constant of the integrating circuit 6. The output of the circuit 6 is delayed furthermore by a time based on the time constant of the integrating circuit 7 and is outputted from inverters 1 and 4. Consequently, the output of a clock output terminal 8 is a clock signal having the frequency determined by the numbers of stages of inverters and integrating circuits and time constants of integrating circuits. Information written in the memory cell of a time constant control circuit is changed to adjust the oscillation frequency of an oscillating circuit.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62244931A JPS6486708A (en) | 1987-09-29 | 1987-09-29 | Oscillating circuit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62244931A JPS6486708A (en) | 1987-09-29 | 1987-09-29 | Oscillating circuit |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6486708A true JPS6486708A (en) | 1989-03-31 |
Family
ID=17126096
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62244931A Pending JPS6486708A (en) | 1987-09-29 | 1987-09-29 | Oscillating circuit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6486708A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH02235428A (en) * | 1989-03-09 | 1990-09-18 | Ricoh Co Ltd | Voltage controlled oscillator |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60226021A (en) * | 1984-04-25 | 1985-11-11 | Atsushi Kitamura | Magnetic recording medium |
JPS62107A (en) * | 1985-06-26 | 1987-01-06 | Mitsubishi Electric Corp | Semiconductor device |
-
1987
- 1987-09-29 JP JP62244931A patent/JPS6486708A/en active Pending
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60226021A (en) * | 1984-04-25 | 1985-11-11 | Atsushi Kitamura | Magnetic recording medium |
JPS62107A (en) * | 1985-06-26 | 1987-01-06 | Mitsubishi Electric Corp | Semiconductor device |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH02235428A (en) * | 1989-03-09 | 1990-09-18 | Ricoh Co Ltd | Voltage controlled oscillator |
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