JPS5532198A - Power source circuit - Google Patents

Power source circuit

Info

Publication number
JPS5532198A
JPS5532198A JP10602178A JP10602178A JPS5532198A JP S5532198 A JPS5532198 A JP S5532198A JP 10602178 A JP10602178 A JP 10602178A JP 10602178 A JP10602178 A JP 10602178A JP S5532198 A JPS5532198 A JP S5532198A
Authority
JP
Japan
Prior art keywords
control portion
terminal
changed
circuit
protecting
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
JP10602178A
Other languages
Japanese (ja)
Inventor
Shinichi Imoo
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
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 by Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP10602178A priority Critical patent/JPS5532198A/en
Publication of JPS5532198A publication Critical patent/JPS5532198A/en
Pending legal-status Critical Current

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Abstract

PURPOSE: To inform the direct control portion of the instantaneous detecting signal when the alternating current input is interrupted, and interrupt the process of the control portion, thereby to make the generation of the protecting signal faster and protect the memory effectively.
CONSTITUTION: When the alternating current is applied to the alternating current terminal 1, it is rectified in the rectifying circuit 2 and supplied to the circuit system power source terminal 7. If the alternating input is broken, the instantaneously shutting circuit 3 is operated and the instantaneously shutting detecting output terminal 8 is changed from H to L. The change in signal if the terminal 8 is detected by the control portion. Then, in the control portion, the program processing is interrupted and the instantaneously shutting program is performed and thereafter, the protecting circuit input terminal 9 is changed from H to L and the operation of the control portion is stopped. When the terminal 9 is changed to L, the protecting signal generation circuit 4 is operated, the protecting signal output terminal is changed from H to L and the writing in and reading out of access are prevented. When the power source is recovered and reaches a predetermined potential, the control portion restarts from the address during the performance of the interrupted process program.
COPYRIGHT: (C)1980,JPO&Japio
JP10602178A 1978-08-29 1978-08-29 Power source circuit Pending JPS5532198A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10602178A JPS5532198A (en) 1978-08-29 1978-08-29 Power source circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10602178A JPS5532198A (en) 1978-08-29 1978-08-29 Power source circuit

Publications (1)

Publication Number Publication Date
JPS5532198A true JPS5532198A (en) 1980-03-06

Family

ID=14422988

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10602178A Pending JPS5532198A (en) 1978-08-29 1978-08-29 Power source circuit

Country Status (1)

Country Link
JP (1) JPS5532198A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57157322A (en) * 1981-03-23 1982-09-28 Akai Electric Co Ltd Microcomputer device
JPS58137020A (en) * 1982-02-05 1983-08-15 Sharp Corp Electronic equipment driven by battery
JPS6224483U (en) * 1985-07-25 1987-02-14

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57157322A (en) * 1981-03-23 1982-09-28 Akai Electric Co Ltd Microcomputer device
JPS58137020A (en) * 1982-02-05 1983-08-15 Sharp Corp Electronic equipment driven by battery
JPS6224483U (en) * 1985-07-25 1987-02-14

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