JPS63163007U - - Google Patents
Info
- Publication number
- JPS63163007U JPS63163007U JP5341387U JP5341387U JPS63163007U JP S63163007 U JPS63163007 U JP S63163007U JP 5341387 U JP5341387 U JP 5341387U JP 5341387 U JP5341387 U JP 5341387U JP S63163007 U JPS63163007 U JP S63163007U
- Authority
- JP
- Japan
- Prior art keywords
- oscillation
- frequency
- output
- circuit
- output port
- 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 claims description 15
- 239000013078 crystal Substances 0.000 claims description 3
- 239000003990 capacitor Substances 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 3
Landscapes
- Oscillators With Electromechanical Resonators (AREA)
Description
第１図および第２図は、この考案に係る基準発
振周波数調整装置の実施例を示すものであつて、
第１図はブロツク図、第２図はフローチヤート図
である。第３図は従来例を示すブロツク図である
。第４図は、この考案の出願人が先に提案した基
準発振周波数調整装置のブロツク図である。
１：マイクロコンピユータ、２：水晶発振子、
３：トリマコンデンサ、４：出力ポート、５：テ
ストポイント、６：周波数カウンタ、１１：基準
周波数発振回路、１２：分周回路、１３：出力バ
ツフア、１４：判別回路。
1 and 2 show an embodiment of the reference oscillation frequency adjusting device according to the invention,
FIG. 1 is a block diagram, and FIG. 2 is a flowchart. FIG. 3 is a block diagram showing a conventional example. FIG. 4 is a block diagram of a reference oscillation frequency adjusting device previously proposed by the applicant of this invention. 1: Microcomputer, 2: Crystal oscillator,
3: Trimmer capacitor, 4: Output port, 5: Test point, 6: Frequency counter, 11: Reference frequency oscillation circuit, 12: Frequency dividing circuit, 13: Output buffer, 14: Discrimination circuit.
Claims (1)
波数発振回路と、この基準周波数発振回路に外部
接続された水晶発振子および水晶発振周波数を調
整するためのトリマコンデンサと、基準周波数発
振回路の出力を分周する分周回路とを備え、前記
基準周波数発振回路の発振周波数信号を出力ポー
トに出力するように構成されている基準発振周波
数調整装置であつて、 メイン電源がオフ状態でかつマイクロコンピユ
ータのバツクアツプ電源がバツクアツプ動作中で
あるか否かを判別する判別手段と、この判別手段
の出力情報に基づいて出力ポートへの発振周波数
信号の供給を禁止する供給禁止手段とを備え、マ
イクロコンピユータのバツクアツプ中にのみ出力
ポートへ発振周波数信号の供給をするように構成
したことを特徴とする基準発振周波数調整装置。[Claims for Utility Model Registration] A reference frequency oscillation circuit formed inside a microcomputer, a crystal oscillator externally connected to this reference frequency oscillation circuit, a trimmer capacitor for adjusting the crystal oscillation frequency, and a reference frequency oscillation circuit. A reference oscillation frequency adjustment device comprising a frequency dividing circuit that divides the output of the circuit, and configured to output an oscillation frequency signal of the reference frequency oscillation circuit to an output port, the device being configured to output an oscillation frequency signal of the reference frequency oscillation circuit to an output port, the device being configured to and a determination means for determining whether or not a backup power supply of the microcomputer is in backup operation, and a supply prohibition means for prohibiting the supply of an oscillation frequency signal to the output port based on output information of the determination means, A reference oscillation frequency adjustment device characterized in that it is configured to supply an oscillation frequency signal to an output port only during backup of a microcomputer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5341387U JPH054328Y2 (en) | 1987-04-10 | 1987-04-10 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5341387U JPH054328Y2 (en) | 1987-04-10 | 1987-04-10 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63163007U true JPS63163007U (en) | 1988-10-25 |
| JPH054328Y2 JPH054328Y2 (en) | 1993-02-03 |
Family
ID=30879454
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5341387U Expired - Lifetime JPH054328Y2 (en) | 1987-04-10 | 1987-04-10 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH054328Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5460903B1 (en) * | 2013-03-08 | 2014-04-02 | 株式会社ダイシン | Vibrating transfer device |
-
1987
- 1987-04-10 JP JP5341387U patent/JPH054328Y2/ja not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH054328Y2 (en) | 1993-02-03 |
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