JPH0514187A - Oscillator - Google Patents
OscillatorInfo
- Publication number
- JPH0514187A JPH0514187A JP3165451A JP16545191A JPH0514187A JP H0514187 A JPH0514187 A JP H0514187A JP 3165451 A JP3165451 A JP 3165451A JP 16545191 A JP16545191 A JP 16545191A JP H0514187 A JPH0514187 A JP H0514187A
- Authority
- JP
- Japan
- Prior art keywords
- oscillation
- voltage
- circuit
- power supply
- switch
- 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
Landscapes
- Inductance-Capacitance Distribution Constants And Capacitance-Resistance Oscillators (AREA)
- Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
Abstract
(57)【要約】
【目的】 発振回路に昇圧回路と電圧切換えスイッチを
付加することにより、発振回路の発振開始を容易にし、
発振安定後は、装置の消費電流を低減する。
【構成】 発振回路１の発振開始時、スイッチ４を端子
６側に設定しておき、電源電圧以上に昇圧された電圧を
発振回路のＶＤＤ側電圧とする。そうすることにより発
振回路１は、発振開始電圧に対し、より高い電圧が発振
回路に供給されるので、容易に発振開始が行える。そし
て、発振安定後、スイッチ４を端子５側に接続すること
により、回路に供給される電圧幅を小さくし、装置の消
費電流の低減を実現できる。
(57) [Abstract] [Purpose] Adding a booster circuit and a voltage changeover switch to the oscillator circuit makes it easier to start oscillation.
After the oscillation stabilizes, the current consumption of the device is reduced. [Configuration] When the oscillation circuit 1 starts oscillation, the switch 4 is set to the terminal 6 side, and the voltage boosted to the power source voltage or more is used as the VDD side voltage of the oscillation circuit. By doing so, the oscillation circuit 1 is supplied with a voltage higher than the oscillation start voltage to the oscillation circuit, so that the oscillation can be easily started. Then, after the oscillation is stabilized, the width of the voltage supplied to the circuit can be reduced by connecting the switch 4 to the terminal 5 side, and the current consumption of the device can be reduced.
Description
【０００１】[0001]
【産業上の利用分野】本発明は、低電圧で動作するマイ
コンに関し、より具体的には、発振回路のＶＤＤ側電圧
を供給する回路を改良することにより、発振回路の開始
を容易にし、発振安定後の装置の消費電流の低減を実現
するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a microcomputer operating at a low voltage, and more specifically, by improving a circuit for supplying a VDD side voltage of an oscillation circuit, the oscillation circuit can be started easily and oscillation can be performed. The reduction of the current consumption of the device after stabilization is realized.
【０００２】[0002]
【従来の技術】従来の回路について説明する。2. Description of the Related Art A conventional circuit will be described.
【０００３】図２は従来の装置の構成を示すものであ
る。図２において、１は発振回路、２は直流電源であ
る。FIG. 2 shows the configuration of a conventional device. In FIG. 2, reference numeral 1 is an oscillator circuit, and 2 is a DC power supply.
【０００４】この発振装置では、図２に示すように、直
流電源２により発振回路１のＶＤＤ側電圧が供給され
る。In this oscillator, as shown in FIG. 2, the VDD side voltage of the oscillator circuit 1 is supplied from the DC power supply 2.
【０００５】[0005]
【発明が解決しようとする課題】しかしながら上記従来
の構成では、電源電圧が低電圧である場合、発振回路の
発振開始が困難となるといった欠点を有していた。However, the above-mentioned conventional configuration has a drawback that it is difficult to start oscillation of the oscillation circuit when the power supply voltage is low.
【０００６】本発明は上記従来の問題点を解決するもの
で、発振開始を容易にし、発振安定後の装置の消費電流
を抑えることを実現できる発振装置を提供することを目
的とする。An object of the present invention is to solve the above-mentioned conventional problems, and an object thereof is to provide an oscillation device capable of facilitating the start of oscillation and suppressing the current consumption of the device after the oscillation is stabilized.
【０００７】[0007]
【課題を解決するための手段】この目的を達成するため
に本発明の発振装置は、直流電源電圧を昇圧する昇圧回
路と、電源電圧レベルと昇圧回路の出力電圧レベルを切
り換えることの出来る電圧切換えスイッチを付与した回
路構成をとった。In order to achieve this object, an oscillating device of the present invention comprises a booster circuit for boosting a DC power supply voltage and a voltage switching capable of switching between the power supply voltage level and the output voltage level of the booster circuit. The circuit configuration with a switch is used.
【０００８】[0008]
【作用】この構成によって、発振回路の発振開始時のＶ
ＤＤ側電圧を高く設定することで発振の開始を容易にす
る。また、発振安定後はＶＤＤ側電圧を低く設定するこ
とで、入力電圧幅を小さくし、装置の低消費電流を実現
する。With this configuration, V when the oscillation circuit starts oscillating
Setting the DD side voltage high facilitates the start of oscillation. Further, after the oscillation is stabilized, the VDD side voltage is set to be low to reduce the input voltage width and realize low current consumption of the device.
【０００９】[0009]
【実施例】以下本発明の一実施例に、図面を参照しなが
ら説明する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.
【００１０】図１は本発明の実施例における発振装置の
実施例を示すものである。図１において、１は発振回
路、２は直流電源、３は昇圧回路、４は電圧切換えスイ
ッチ、５は直流電源の出力端子、６は昇圧回路の出力端
子である。FIG. 1 shows an embodiment of an oscillating device in an embodiment of the present invention. In FIG. 1, 1 is an oscillation circuit, 2 is a DC power supply, 3 is a booster circuit, 4 is a voltage changeover switch, 5 is an output terminal of the DC power supply, and 6 is an output terminal of the booster circuit.
【００１１】以上のように構成された発振装置につい
て、以下その動作を説明する。まず、発振回路１の発振
開始時、スイッチ４を端子６側に設定しておき、電源電
圧以上に昇圧された電圧を発振回路のＶＤＤ側電圧とす
る。そうすることにより発振回路１は、発振開始電圧に
対し、より高い電圧が発振回路に供給されているので、
容易に発振開始が行える。そして、発振安定後、スイッ
チ４を端子５側に接続することにより、回路に供給され
る電圧幅を小さくし、装置の消費電流の低減を実現でき
る。The operation of the oscillator constructed as above will be described below. First, when the oscillation circuit 1 starts to oscillate, the switch 4 is set on the terminal 6 side, and the voltage boosted to the power source voltage or higher is used as the VDD side voltage of the oscillation circuit. By doing so, the oscillation circuit 1 is supplied with a voltage higher than the oscillation start voltage,
Oscillation can be started easily. Then, after the oscillation is stabilized, the width of the voltage supplied to the circuit can be reduced by connecting the switch 4 to the terminal 5 side, and the current consumption of the device can be reduced.
【００１２】[0012]
【発明の効果】以上のように本発明は、従来の回路に昇
圧回路、電圧切換えスイッチを付与したことで、発振回
路の発振開始を容易にし、発振安定後の装置の消費電流
の低減し、マイコンなどの低電圧動作を実現できるもの
である。As described above, according to the present invention, by adding a booster circuit and a voltage changeover switch to the conventional circuit, it is easy to start the oscillation of the oscillation circuit and reduce the current consumption of the device after the oscillation is stabilized. It can realize low-voltage operation of microcomputers.
【図１】本発明の一実施例における発振装置の構成図FIG. 1 is a configuration diagram of an oscillator according to an embodiment of the present invention.
【図２】従来の発振装置の構成図FIG. 2 is a configuration diagram of a conventional oscillator.
１ 発振回路 ２ 直流電源 ３ 昇圧回路 ４ 電圧切換えスイッチ ５ 直流電源２の出力端子 ６ 昇圧回路３の出力端子 1 Oscillation Circuit 2 DC Power Supply 3 Booster Circuit 4 Voltage Changeover Switch 5 DC Power Supply 2 Output Terminal 6 Booster Circuit 3 Output Terminal
Claims (1)
電圧を得るための昇圧回路と、発振回路のＶＤＤ側電圧
を、前記直流電源電圧と前記昇圧回路で昇圧した電圧の
２レベルの電圧を切り換える電圧切換えスイッチと備え
た発振装置。Claims: 1. A step-up circuit for inputting a DC power supply voltage to obtain a voltage equal to or higher than the power supply voltage, and a VDD side voltage of an oscillation circuit are boosted by the DC power supply voltage and the step-up circuit. An oscillating device having a voltage selector switch for switching between two levels of voltage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3165451A JPH0514187A (en) | 1991-07-05 | 1991-07-05 | Oscillator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3165451A JPH0514187A (en) | 1991-07-05 | 1991-07-05 | Oscillator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0514187A true JPH0514187A (en) | 1993-01-22 |
Family
ID=15812673
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3165451A Pending JPH0514187A (en) | 1991-07-05 | 1991-07-05 | Oscillator |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0514187A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008099257A (en) * | 2006-09-13 | 2008-04-24 | Citizen Holdings Co Ltd | Oscillation circuit |
-
1991
- 1991-07-05 JP JP3165451A patent/JPH0514187A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008099257A (en) * | 2006-09-13 | 2008-04-24 | Citizen Holdings Co Ltd | Oscillation circuit |
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