JPS55102031A - Control circuit for microprocessor - Google Patents

Control circuit for microprocessor

Info

Publication number
JPS55102031A
JPS55102031A JP983779A JP983779A JPS55102031A JP S55102031 A JPS55102031 A JP S55102031A JP 983779 A JP983779 A JP 983779A JP 983779 A JP983779 A JP 983779A JP S55102031 A JPS55102031 A JP S55102031A
Authority
JP
Japan
Prior art keywords
voltage
power supply
μpcu
dropped
time
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
JP983779A
Other languages
Japanese (ja)
Inventor
Osamu Takahashi
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 JP983779A priority Critical patent/JPS55102031A/en
Publication of JPS55102031A publication Critical patent/JPS55102031A/en
Pending legal-status Critical Current

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Abstract

PURPOSE: To enable initializing of μPCU completely, by charging the capacitor C via the diode through DC power supply in the control circuit of microprocessor μPCU and discharging the charge of C when the power supply is dropped than the set value.
CONSTITUTION: When the AC power supply 1 is closed at time t0, the emitter voltage C of the transistor Tr13 is lower than the base voltage due to the voltage drop of the diode D12, Tr13 is OFF and μPC8 is initialized and also C6, C10 are charged. When the power supply 1 is interrupted at time t1, the voltage A of the DC power supply 5 is gradually decreased. But, when the voltage A is dropped than the voltage C by the threshold value of Tr13, Tr13 is ON and the charge of C6 is rapidly discharged. When the power supply is restored at time t2, the voltage A, C are increased to V3, Tr13 is OFF, C6 is again charged, and the initial input terminal voltage B is dropped. In this case, during the period exceeding the set voltage V1, it is kept by T1, and μPCU is initialized.
COPYRIGHT: (C)1980,JPO&Japio
JP983779A 1979-01-31 1979-01-31 Control circuit for microprocessor Pending JPS55102031A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP983779A JPS55102031A (en) 1979-01-31 1979-01-31 Control circuit for microprocessor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP983779A JPS55102031A (en) 1979-01-31 1979-01-31 Control circuit for microprocessor

Publications (1)

Publication Number Publication Date
JPS55102031A true JPS55102031A (en) 1980-08-04

Family

ID=11731233

Family Applications (1)

Application Number Title Priority Date Filing Date
JP983779A Pending JPS55102031A (en) 1979-01-31 1979-01-31 Control circuit for microprocessor

Country Status (1)

Country Link
JP (1) JPS55102031A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6022027U (en) * 1983-07-20 1985-02-15 カルソニックカンセイ株式会社 reset circuit
JPS6439861A (en) * 1987-08-05 1989-02-10 Tensho Electric Ind Co Hit detecting device for telephone line
US20140193244A1 (en) * 2011-08-16 2014-07-10 Borgwarner Inc. Bearing housing of an exhaust-gas turbocharger

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6022027U (en) * 1983-07-20 1985-02-15 カルソニックカンセイ株式会社 reset circuit
JPS6439861A (en) * 1987-08-05 1989-02-10 Tensho Electric Ind Co Hit detecting device for telephone line
US20140193244A1 (en) * 2011-08-16 2014-07-10 Borgwarner Inc. Bearing housing of an exhaust-gas turbocharger

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