JPS55162155A - Interrupting circuit of microcomputer - Google Patents
Interrupting circuit of microcomputerInfo
- Publication number
- JPS55162155A JPS55162155A JP7101979A JP7101979A JPS55162155A JP S55162155 A JPS55162155 A JP S55162155A JP 7101979 A JP7101979 A JP 7101979A JP 7101979 A JP7101979 A JP 7101979A JP S55162155 A JPS55162155 A JP S55162155A
- Authority
- JP
- Japan
- Prior art keywords
- signal
- interruption
- counter
- active
- processing part
- 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
Abstract
PURPOSE: To obtain an interrupting circuit with the large performance of removing noises by accepting as a real insterruption only an interruption signal which becomes active while its time width exceeding set one.
CONSTITUTION: Once master reset signal 10 of the microcomputer is activated, interruption processing part 8 activates reset signal 9 to reset FF5. Consequently, interruption control signal 7 becomes inactive and processing part 8 is ready to accept the interruption. Output 6 of FF5 is also inactive and interruption signal 12 is inverted by gate 11 and added to reset signal 4 of counter 1. Then, when signal 12 is activated, counter 1 starts counting clocks 2 and after signal 12 stays active until carry signal 3 becomes active, signal 3 sets FF5 and output signal 6 interrupts the counting of counter 1 to activate signal 7, starting processing part 8. When the time when signal 12 is active is shorter than set width, signal 3 never becomes active and FF5 is not set, so that the interruption will never be accepted.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7101979A JPS55162155A (en) | 1979-06-05 | 1979-06-05 | Interrupting circuit of microcomputer |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7101979A JPS55162155A (en) | 1979-06-05 | 1979-06-05 | Interrupting circuit of microcomputer |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS55162155A true JPS55162155A (en) | 1980-12-17 |
Family
ID=13448379
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP7101979A Pending JPS55162155A (en) | 1979-06-05 | 1979-06-05 | Interrupting circuit of microcomputer |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS55162155A (en) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61110242A (en) * | 1984-11-02 | 1986-05-28 | Sanyo Electric Co Ltd | Method for detecting interrupt signal of microcomputer |
JPS62219030A (en) * | 1985-12-13 | 1987-09-26 | ロ−ベルト・ボツシユ・ゲゼルシヤフト・ミツト・ベシユレンクテル・ハフツング | Computer having interrupt program |
JPS62255280A (en) * | 1986-04-30 | 1987-11-07 | Komatsu Ltd | Steering gear |
JPS62183251U (en) * | 1986-05-12 | 1987-11-20 | ||
JPS62269240A (en) * | 1986-05-16 | 1987-11-21 | Sharp Corp | Noise eliminating device |
JPS63236136A (en) * | 1987-03-24 | 1988-10-03 | Fujitsu Ten Ltd | Input filter |
US7584381B2 (en) | 2005-03-25 | 2009-09-01 | Seiko Epson Corporation | Semiconductor integrated circuit device, debug system, microcomputer, and electronic apparatus |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS51112239A (en) * | 1975-03-28 | 1976-10-04 | Hitachi Ltd | Noise elimination circuit |
JPS5486244A (en) * | 1977-12-21 | 1979-07-09 | Nec Corp | Information processor |
-
1979
- 1979-06-05 JP JP7101979A patent/JPS55162155A/en active Pending
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS51112239A (en) * | 1975-03-28 | 1976-10-04 | Hitachi Ltd | Noise elimination circuit |
JPS5486244A (en) * | 1977-12-21 | 1979-07-09 | Nec Corp | Information processor |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61110242A (en) * | 1984-11-02 | 1986-05-28 | Sanyo Electric Co Ltd | Method for detecting interrupt signal of microcomputer |
JPS62219030A (en) * | 1985-12-13 | 1987-09-26 | ロ−ベルト・ボツシユ・ゲゼルシヤフト・ミツト・ベシユレンクテル・ハフツング | Computer having interrupt program |
JPS62255280A (en) * | 1986-04-30 | 1987-11-07 | Komatsu Ltd | Steering gear |
JPS62183251U (en) * | 1986-05-12 | 1987-11-20 | ||
JPS62269240A (en) * | 1986-05-16 | 1987-11-21 | Sharp Corp | Noise eliminating device |
JPH0467216B2 (en) * | 1986-05-16 | 1992-10-27 | Sharp Kk | |
JPS63236136A (en) * | 1987-03-24 | 1988-10-03 | Fujitsu Ten Ltd | Input filter |
US7584381B2 (en) | 2005-03-25 | 2009-09-01 | Seiko Epson Corporation | Semiconductor integrated circuit device, debug system, microcomputer, and electronic apparatus |
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