JPS6076448U - Interrupt input circuit - Google Patents
Interrupt input circuitInfo
- Publication number
- JPS6076448U JPS6076448U JP16578583U JP16578583U JPS6076448U JP S6076448 U JPS6076448 U JP S6076448U JP 16578583 U JP16578583 U JP 16578583U JP 16578583 U JP16578583 U JP 16578583U JP S6076448 U JPS6076448 U JP S6076448U
- Authority
- JP
- Japan
- Prior art keywords
- input circuit
- flip
- interrupt
- interrupt input
- flops
- 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
- Bus Control (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
第１図は本考案の＝実施例に係る割込み入力回路を示す
回路図、第２図は同変形例の回路図である。
なお図面に用いた符号において、１〜８・・・データ入
力端子、１０・・・ＣＰＵ、 １１〜１８・・・フリ
ップフロップ、１９・・・バッファ、２０・・・バツフ
ァア・ンプ、２１〜２８・・・スイッチ、２９．３２・
・・ＮＯＲゲート、３０・・・割込み用コントロール信
号入力ポート、３１・・・チップセレクト端子、３３・
・・リセット用フリップフロップである。FIG. 1 is a circuit diagram showing an interrupt input circuit according to an embodiment of the present invention, and FIG. 2 is a circuit diagram of a modification of the same. In the symbols used in the drawings, 1-8...data input terminal, 10...CPU, 11-18...flip-flop, 19...buffer, 20...buffer amplifier, 21-28 ...Switch, 29.32・
...NOR gate, 30...Interrupt control signal input port, 31...chip select terminal, 33.
...This is a reset flip-flop.
Claims (1)
プフロップを介して割込み信号源と接続するとともに、
前記複数のフリップフロップの出力側をＯＲゲートまた
はＮＯＲゲートを介して前記ＣＰＵの割込み用コントロ
ール信号入力ポートに接続し、しかも前記ＣＰＵがデー
タの読込みを行なった後に出力の状態が変化する端子を
リセット用フリップフロップを介して前記複数のフリッ
プフロップのリセット端子に接続するようにしたことを
特徴とする割込み入力回路。 ２ 前記ＣＰＵがデータの読込みを行なった後に出力の
状態が変化する端子としてチップセレクト端子が用いら
れることを特徴とする実用新案登録請求の範囲第１項に
記載の割込み入力回路。[Claims for Utility Model Registration] I Connecting a plurality of data input terminals of the CPU to an interrupt signal source via flip-flops,
The output sides of the plurality of flip-flops are connected to the interrupt control signal input port of the CPU via an OR gate or a NOR gate, and the terminal whose output state changes after the CPU reads data is reset. An interrupt input circuit characterized in that the interrupt input circuit is connected to reset terminals of the plurality of flip-flops via a flip-flop. 2. The interrupt input circuit according to claim 1, wherein a chip select terminal is used as the terminal whose output state changes after the CPU reads data.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16578583U JPS6076448U (en) | 1983-10-26 | 1983-10-26 | Interrupt input circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16578583U JPS6076448U (en) | 1983-10-26 | 1983-10-26 | Interrupt input circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6076448U true JPS6076448U (en) | 1985-05-28 |
Family
ID=30363120
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16578583U Pending JPS6076448U (en) | 1983-10-26 | 1983-10-26 | Interrupt input circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6076448U (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5138941A (en) * | 1974-09-30 | 1976-03-31 | Hitachi Ltd | |
| JPS53102643A (en) * | 1977-02-21 | 1978-09-07 | Hitachi Ltd | Interrupt processing system for computer |
| JPS56145412A (en) * | 1980-04-14 | 1981-11-12 | Hitachi Ltd | Interruption signal receiving circuit |
| JPS5844634B2 (en) * | 1981-06-17 | 1983-10-04 | 品川白煉瓦株式会社 | heat resistant composition |
-
1983
- 1983-10-26 JP JP16578583U patent/JPS6076448U/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5138941A (en) * | 1974-09-30 | 1976-03-31 | Hitachi Ltd | |
| JPS53102643A (en) * | 1977-02-21 | 1978-09-07 | Hitachi Ltd | Interrupt processing system for computer |
| JPS56145412A (en) * | 1980-04-14 | 1981-11-12 | Hitachi Ltd | Interruption signal receiving circuit |
| JPS5844634B2 (en) * | 1981-06-17 | 1983-10-04 | 品川白煉瓦株式会社 | heat resistant composition |
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