JPS55115119A - Stop and start system of microprocessor - Google Patents
Stop and start system of microprocessorInfo
- Publication number
- JPS55115119A JPS55115119A JP2289679A JP2289679A JPS55115119A JP S55115119 A JPS55115119 A JP S55115119A JP 2289679 A JP2289679 A JP 2289679A JP 2289679 A JP2289679 A JP 2289679A JP S55115119 A JPS55115119 A JP S55115119A
- Authority
- JP
- Japan
- Prior art keywords
- power failure
- circuit
- interruption signal
- reset pulse
- microprocessor
- 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
Abstract
PURPOSE: To ensure to stop and restart this processor, by giving the trap interruption signal from the switch circuit at power failure and the output reset pulse of the OR circuit to the microprocessor at the restoration of power failure.
CONSTITUTION: In the unit using the microprocessor 1, DC voltage is obtained by rectifying AC power input. When the power input is in failure, the switch circuit 3 produces the trap interruption signal, and when the power failure is restored, the level pulse conversion circuit 4 produces the first reset pulse with the level change in the trap interruption signal, the circuit power supply leading detection circuit 5 produces the second reset pulse, logical sum 6 is taken for the first and second reset pulses and the result is given to the processor 1. Thus, on power failure, the processor 1 can surely be stopped and restarted with the trap interruption signal on power failure and with the output reset pulse of the OR circuit 6 on the restoration of power failure.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP54022896A JPS5826047B2 (en) | 1979-02-27 | 1979-02-27 | Microprocessor stop and start method |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP54022896A JPS5826047B2 (en) | 1979-02-27 | 1979-02-27 | Microprocessor stop and start method |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS55115119A true JPS55115119A (en) | 1980-09-04 |
JPS5826047B2 JPS5826047B2 (en) | 1983-05-31 |
Family
ID=12095405
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP54022896A Expired JPS5826047B2 (en) | 1979-02-27 | 1979-02-27 | Microprocessor stop and start method |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5826047B2 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH02242312A (en) * | 1989-03-15 | 1990-09-26 | Matsushita Electric Ind Co Ltd | Reset control circuit for microcomputer |
CN107707233A (en) * | 2017-11-03 | 2018-02-16 | 中国电子科技集团公司第五十四研究所 | A kind of reset circuit for preventing instant power-down from causing secondary reset |
-
1979
- 1979-02-27 JP JP54022896A patent/JPS5826047B2/en not_active Expired
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH02242312A (en) * | 1989-03-15 | 1990-09-26 | Matsushita Electric Ind Co Ltd | Reset control circuit for microcomputer |
CN107707233A (en) * | 2017-11-03 | 2018-02-16 | 中国电子科技集团公司第五十四研究所 | A kind of reset circuit for preventing instant power-down from causing secondary reset |
CN107707233B (en) * | 2017-11-03 | 2020-09-01 | 中国电子科技集团公司第五十四研究所 | Reset circuit for preventing instantaneous power failure from causing secondary reset |
Also Published As
Publication number | Publication date |
---|---|
JPS5826047B2 (en) | 1983-05-31 |
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