JPS62183251U - - Google Patents

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Publication number
JPS62183251U
JPS62183251U JP7142186U JP7142186U JPS62183251U JP S62183251 U JPS62183251 U JP S62183251U JP 7142186 U JP7142186 U JP 7142186U JP 7142186 U JP7142186 U JP 7142186U JP S62183251 U JPS62183251 U JP S62183251U
Authority
JP
Japan
Prior art keywords
circuit
signal input
interrupt
edge
pulses
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
JP7142186U
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 filed filed Critical
Priority to JP7142186U priority Critical patent/JPS62183251U/ja
Publication of JPS62183251U publication Critical patent/JPS62183251U/ja
Pending legal-status Critical Current

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  • Debugging And Monitoring (AREA)
  • Bus Control (AREA)

Description

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

第１図は本考案に従うマイクロコンピユータが
備える割り込み要求信号入力回路の構成を示すブ
ロツク図である。 （主な参照番号）、１……割り込み要求信号入
力外部端子、２……エツジ検出回路、３……シス
テム・クロツク信号、４……カウンタ・リセツト
信号、５……保持時間指示レジスタ、６……カウ
ンタ回路、７……割り込み要求信号。 FIG. 1 is a block diagram showing the configuration of an interrupt request signal input circuit included in a microcomputer according to the present invention. (Main reference numbers), 1...Interrupt request signal input external terminal, 2...Edge detection circuit, 3...System clock signal, 4...Counter reset signal, 5...Holding time instruction register, 6... ...Counter circuit, 7...Interrupt request signal.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 外部から入力される割り込み信号のエツジを検
出する回路と、該検出回路により検出されたエツ
ジ信号によりリセツトされ、システムクロツクパ
ルスを計数するカウンタ回路と、該カウンタ回路
が計数すべきパルス数を任意に設定できるレジス
タとを備えて、割り込み信号の検出動作の為の電
圧レベル保持時間を任意に設定することのできる
割り込み要求信号入力回路を備えることを特徴と
するマイクロコンピユータ。 A circuit that detects the edge of an interrupt signal input from the outside, a counter circuit that is reset by the edge signal detected by the detection circuit and counts system clock pulses, and an arbitrary number of pulses to be counted by the counter circuit. 1. A microcomputer comprising an interrupt request signal input circuit that can arbitrarily set a voltage level holding time for detecting an interrupt signal.
JP7142186U 1986-05-12 1986-05-12 Pending JPS62183251U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7142186U JPS62183251U (en) 1986-05-12 1986-05-12

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7142186U JPS62183251U (en) 1986-05-12 1986-05-12

Publications (1)

Publication Number Publication Date
JPS62183251U true JPS62183251U (en) 1987-11-20

Family

ID=30913957

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7142186U Pending JPS62183251U (en) 1986-05-12 1986-05-12

Country Status (1)

Country Link
JP (1) JPS62183251U (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51112239A (en) * 1975-03-28 1976-10-04 Hitachi Ltd Noise elimination circuit
JPS55162155A (en) * 1979-06-05 1980-12-17 Matsushita Electric Ind Co Ltd Interrupting circuit of microcomputer

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51112239A (en) * 1975-03-28 1976-10-04 Hitachi Ltd Noise elimination circuit
JPS55162155A (en) * 1979-06-05 1980-12-17 Matsushita Electric Ind Co Ltd Interrupting circuit of microcomputer

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