JPS57201923A - Reset circuit - Google Patents

Reset circuit

Info

Publication number
JPS57201923A
JPS57201923A JP56087790A JP8779081A JPS57201923A JP S57201923 A JPS57201923 A JP S57201923A JP 56087790 A JP56087790 A JP 56087790A JP 8779081 A JP8779081 A JP 8779081A JP S57201923 A JPS57201923 A JP S57201923A
Authority
JP
Japan
Prior art keywords
output
reset
circuit
fet9
flop
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
JP56087790A
Other languages
Japanese (ja)
Inventor
Koichi Fujita
Shozo Shirota
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 JP56087790A priority Critical patent/JPS57201923A/en
Publication of JPS57201923A publication Critical patent/JPS57201923A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/24—Resetting means

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Electronic Switches (AREA)

Abstract

PURPOSE:To precisely operate an electronic device to be driven by providing a circuit with trigger and delay functions to an output part of a reset circuit driving part. CONSTITUTION:A serially connected elements consisting of a Zener diode 7 and a resistance 8 constitutes a circuit detecting the voltage drop of an electric power source terminal 2. When the voltage of the electric power source terminal 2 drops temporally, an RS flip-flop 6 is set up by the output change of a power voltage drop detecting circuit, the output A is turned to the low level and enhancement type FET9 is connected, so that the electric charge of a capacitor C is dischared through the connected FET9, the output voltage of an output terminal 5 drops to threshold voltage level of below and a microcomputer is reset. Simultaneously, the RS flip-flop is reset, the enhancement type FET9 is interrupted and th capacitor 3 is charged again through a depression type FET1. When the output voltage exceeds the threshold voltage level, the reset of the RS flip-flop is released.
JP56087790A 1981-06-05 1981-06-05 Reset circuit Pending JPS57201923A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56087790A JPS57201923A (en) 1981-06-05 1981-06-05 Reset circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56087790A JPS57201923A (en) 1981-06-05 1981-06-05 Reset circuit

Publications (1)

Publication Number Publication Date
JPS57201923A true JPS57201923A (en) 1982-12-10

Family

ID=13924770

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56087790A Pending JPS57201923A (en) 1981-06-05 1981-06-05 Reset circuit

Country Status (1)

Country Link
JP (1) JPS57201923A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6195614A (en) * 1984-10-16 1986-05-14 Sanyo Electric Co Ltd Reset signal generating circuit

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6195614A (en) * 1984-10-16 1986-05-14 Sanyo Electric Co Ltd Reset signal generating circuit

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