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JPS61195104U - - Google Patents

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Publication number
JPS61195104U
JPS61195104UJP7453885UJP7453885UJPS61195104UJP S61195104 UJPS61195104 UJP S61195104UJP 7453885 UJP7453885 UJP 7453885UJP 7453885 UJP7453885 UJP 7453885UJP S61195104 UJPS61195104 UJP S61195104U
Authority
JP
Japan
Prior art keywords
oscillation circuit
inverter
output
mosfets
crystal
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
Application number
JP7453885U
Other languages
Japanese (ja)
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filedfiledCritical
Priority to JP7453885UpriorityCriticalpatent/JPS61195104U/ja
Publication of JPS61195104UpublicationCriticalpatent/JPS61195104U/ja
Pendinglegal-statusCriticalCurrent

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Description

Translated fromJapanese
【図面の簡単な説明】[Brief explanation of the drawing]

第１図は本考案の実施例を示す回路図、第２図
は従来例を示す回路図である。 主な図番の説明、１６，１７……外部端子、１
８……クリスタル発振回路、１９……ＣＲ発振回
路、２１，２６，３０，３１……ＭＯＳＦＥＴ。 FIG. 1 is a circuit diagram showing an embodiment of the present invention, and FIG. 2 is a circuit diagram showing a conventional example. Explanation of main drawing numbers, 16, 17...external terminals, 1
8...Crystal oscillation circuit, 19...CR oscillation circuit, 21, 26, 30, 31...MOSFET.

Claims (1)

Translated fromJapanese
【実用新案登録請求の範囲】[Scope of utility model registration request] セラミツク振動子あるいは水晶振動子を用いる
クリスタル発振回路と抵抗及びコンデンサを用い
るＣＲ発振回路を内蔵するＭＯＳ集積回路に於い
て、前記クリスタル発振回路はインバータと、該
インバータの入出力に並列接続され帰環抵抗とな
る第１のＭＯＳＦＥＴとから構成され、前記ＣＲ
発振回路は継続接続されたインバータあるいはバ
ツフアと、最終段の出力がゲートに印加された帰
環用のＭＯＳＦＥＴと、前記継続接続されたイン
バータあるいはバツフアの出力と所定電位間に接
続された第２のＭＯＳＦＥＴとから構成され、前
記第１及び第２のＭＯＳＦＥＴの各ゲートを所定
電位間に直列接続された第３及び第４のＭＯＳＦ
ＥＴの接続点に接続し、該第３及び第４のＭＯＳ
ＦＥＴの各々をエンハンスメント型とデフレツシ
ヨン型の一方に選択することによりクリスタル発
振回路とＣＲ発振回路が切り換えられることを特
徴とするＭＯＳ集積回路。 In a MOS integrated circuit that incorporates a crystal oscillation circuit using a ceramic resonator or crystal resonator and a CR oscillation circuit using a resistor and a capacitor, the crystal oscillation circuit is connected in parallel to an inverter and the input and output of the inverter, and is connected in parallel to the input and output of the inverter. The CR
The oscillation circuit includes a continuously connected inverter or buffer, a return MOSFET to which the output of the final stage is applied to the gate, and a second MOSFET connected between the output of the continuously connected inverter or buffer and a predetermined potential. MOSFETs, and third and fourth MOSFETs, each gate of the first and second MOSFETs being connected in series between a predetermined potential.
connected to the connection point of the ET, and the third and fourth MOS
A MOS integrated circuit characterized in that a crystal oscillation circuit and a CR oscillation circuit can be switched by selecting either an enhancement type or a deflation type for each FET.
JP7453885U1985-05-201985-05-20PendingJPS61195104U (en)

Priority Applications (1)

Application NumberPriority DateFiling DateTitle
JP7453885UJPS61195104U (en)1985-05-201985-05-20

Applications Claiming Priority (1)

Application NumberPriority DateFiling DateTitle
JP7453885UJPS61195104U (en)1985-05-201985-05-20

Publications (1)

Publication NumberPublication Date
JPS61195104Utrue JPS61195104U (en)1986-12-05

Family

ID=30614934

Family Applications (1)

Application NumberTitlePriority DateFiling Date
JP7453885UPendingJPS61195104U (en)1985-05-201985-05-20

Country Status (1)

CountryLink
JP (1)JPS61195104U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication numberPriority datePublication dateAssigneeTitle
JPH07202570A (en)*1993-12-281995-08-04Nippon Precision Circuits KkIntegrated circuit for oscillation and oscillation circuit

Cited By (1)

* Cited by examiner, † Cited by third party
Publication numberPriority datePublication dateAssigneeTitle
JPH07202570A (en)*1993-12-281995-08-04Nippon Precision Circuits KkIntegrated circuit for oscillation and oscillation circuit

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