JPS645516U - - Google Patents
Info
- Publication number
- JPS645516U JPS645516U JP9810387U JP9810387U JPS645516U JP S645516 U JPS645516 U JP S645516U JP 9810387 U JP9810387 U JP 9810387U JP 9810387 U JP9810387 U JP 9810387U JP S645516 U JPS645516 U JP S645516U
- Authority
- JP
- Japan
- Prior art keywords
- transistors
- setting
- crystal resonator
- oscillation frequency
- circuit
- 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
- 230000010355 oscillation Effects 0.000 claims description 5
- 239000013078 crystal Substances 0.000 claims description 3
- 239000003990 capacitor Substances 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Oscillators With Electromechanical Resonators (AREA)
Description
第１図及び第２図は本考案の一実施例を示すも
ので、第１図は時計回路のブロツク図、第２図は
発振回路の詳細回路図である。
１……発振回路、２……分周回路、３……計時
回路、６……水晶振動子、９〜１１……ラツチ回
路、Ｃ１〜Ｃ６……コンデンサ、Ｔ１〜Ｔ６……
トランジスタ。
1 and 2 show an embodiment of the present invention, FIG. 1 is a block diagram of a clock circuit, and FIG. 2 is a detailed circuit diagram of an oscillation circuit. DESCRIPTION OF SYMBOLS 1... Oscillation circuit, 2... Frequency division circuit, 3... Timing circuit, 6... Crystal resonator, 9-11... Latch circuit, C1 - C6 ... Capacitor, T1 - T6 ...
transistor.
Claims (1)
トランジスタを介して接続された複数のコンデン
サと、発振周波数の可変量を設定するための複数
の設定端子と、この複数の設定端子の設定状態に
応じて前記複数のトランジスタのうち２以上の特
定数のトランジスタを選択してＯＮ動作する制御
回路を具備してなる発振回路の発振周波数制御装
置。 A crystal resonator, multiple capacitors connected to one end of the crystal resonator via multiple transistors, multiple setting terminals for setting the variable amount of the oscillation frequency, and setting states of the multiple setting terminals. An oscillation frequency control device for an oscillation circuit, comprising a control circuit that selects and turns on two or more specified number of transistors from among the plurality of transistors in accordance with the above.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9810387U JPS645516U (en) | 1987-06-26 | 1987-06-26 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9810387U JPS645516U (en) | 1987-06-26 | 1987-06-26 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS645516U true JPS645516U (en) | 1989-01-12 |
Family
ID=31324067
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9810387U Pending JPS645516U (en) | 1987-06-26 | 1987-06-26 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS645516U (en) |
-
1987
- 1987-06-26 JP JP9810387U patent/JPS645516U/ja active Pending
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