JPS6385369A - Power source voltage detection circuit - Google Patents

Power source voltage detection circuit

Info

Publication number
JPS6385369A
JPS6385369A JP61231878A JP23187886A JPS6385369A JP S6385369 A JPS6385369 A JP S6385369A JP 61231878 A JP61231878 A JP 61231878A JP 23187886 A JP23187886 A JP 23187886A JP S6385369 A JPS6385369 A JP S6385369A
Authority
JP
Japan
Prior art keywords
power source
voltages
alternative way
voltage
source voltage
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.)
Withdrawn
Application number
JP61231878A
Other languages
Japanese (ja)
Other versions
JPH0668521B2 (en
Inventor
Nobutaka Kitagawa
Makoto Ito
Original Assignee
Toshiba 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 Toshiba Corp filed Critical Toshiba Corp
Priority to JP61231878A priority Critical patent/JPH0668521B2/en
Priority claimed from KR1019870002955A external-priority patent/KR910001293B1/en
Publication of JPS6385369A publication Critical patent/JPS6385369A/en
Publication of JPH0668521B2 publication Critical patent/JPH0668521B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Abstract

PURPOSE: To reduce not only the area of a circuit pattern but also current consumption and to detect a multivalue power source level in an alternative way, by outputting a plurality of reference voltages or a plurality of divided voltages of power source voltage in an alternative way.
CONSTITUTION: When a control circuit 7 applies ON-control to switch circuits 41, 42... in an alternative way, reference voltage circuits 31, 32... goes into an operation state in an alternative way the corresponding reference voltages are generated in an alternative way to be inputted to a voltage comparator 6 through a selection gate 5. A power source voltage dividing circuit 1 generates divided voltage Vdiv according to control by the control circuit 7 to input the same to the voltage comparator 6. When power source voltage VDD changes by any cause, the magnitude relation of one selected set of reference voltages and divided output voltages changes and this change is detected by the voltage comparator 6 to be outputted from the control circuit 7.
COPYRIGHT: (C)1988,JPO&Japio
JP61231878A 1986-09-30 1986-09-30 Power supply voltage detection circuit Expired - Fee Related JPH0668521B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP61231878A JPH0668521B2 (en) 1986-09-30 1986-09-30 Power supply voltage detection circuit

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
JP61231878A JPH0668521B2 (en) 1986-09-30 1986-09-30 Power supply voltage detection circuit
KR1019870002955A KR910001293B1 (en) 1986-03-31 1987-03-30 Power source voltage detector device incorporated in lsi circuit
EP87104745A EP0239989B1 (en) 1986-03-31 1987-03-31 Power source voltage regulator device incorporated in lsi circuit
DE8787104745T DE3778953D1 (en) 1986-03-31 1987-03-31 VOLTAGE CONTROL DEVICE FOR AN ENERGY SOURCE, BUILT IN A LSI CIRCUIT.
US07/032,244 US4792749A (en) 1986-03-31 1987-03-31 Power source voltage detector device incorporated in LSI circuit

Publications (2)

Publication Number Publication Date
JPS6385369A true JPS6385369A (en) 1988-04-15
JPH0668521B2 JPH0668521B2 (en) 1994-08-31

Family

ID=16930439

Family Applications (1)

Application Number Title Priority Date Filing Date
JP61231878A Expired - Fee Related JPH0668521B2 (en) 1986-09-30 1986-09-30 Power supply voltage detection circuit

Country Status (1)

Country Link
JP (1) JPH0668521B2 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011043505A (en) * 2005-11-21 2011-03-03 Renesas Electronics Corp Battery voltage measuring device
JP2012531825A (en) * 2009-06-26 2012-12-10 ザ リージェンツ オブ ユニバーシティー オブ ミシガン Two-transistor reference voltage generator
US10715128B2 (en) 2018-02-27 2020-07-14 Seiko Epson Corporation Power supply voltage detection circuit, semiconductor apparatus and electronic device

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5252674A (en) * 1975-10-27 1977-04-27 Victor Co Of Japan Ltd Level detecting system
JPS5415782A (en) * 1977-06-17 1979-02-05 Seiko Epson Corp Voltage detecting circuit
JPS56141566A (en) * 1980-04-04 1981-11-05 Seiko Instr & Electronics Ltd Voltage detecting circuit
JPS56155861A (en) * 1980-10-20 1981-12-02 Toshiba Corp Battery checker
JPS58135466A (en) * 1982-02-08 1983-08-12 Toshiba Corp Detecting circuit of power supply voltage

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5252674A (en) * 1975-10-27 1977-04-27 Victor Co Of Japan Ltd Level detecting system
JPS5415782A (en) * 1977-06-17 1979-02-05 Seiko Epson Corp Voltage detecting circuit
JPS56141566A (en) * 1980-04-04 1981-11-05 Seiko Instr & Electronics Ltd Voltage detecting circuit
JPS56155861A (en) * 1980-10-20 1981-12-02 Toshiba Corp Battery checker
JPS58135466A (en) * 1982-02-08 1983-08-12 Toshiba Corp Detecting circuit of power supply voltage

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011043505A (en) * 2005-11-21 2011-03-03 Renesas Electronics Corp Battery voltage measuring device
JP2012531825A (en) * 2009-06-26 2012-12-10 ザ リージェンツ オブ ユニバーシティー オブ ミシガン Two-transistor reference voltage generator
US10715128B2 (en) 2018-02-27 2020-07-14 Seiko Epson Corporation Power supply voltage detection circuit, semiconductor apparatus and electronic device

Also Published As

Publication number Publication date
JPH0668521B2 (en) 1994-08-31

Similar Documents

Publication Publication Date Title
JPS60124124A (en) Input circuit
JPH01173913A (en) Voltage comparing circuit with hysteresis
JPS6385369A (en) Power source voltage detection circuit
JPS6481082A (en) Arithmetic circuit
JPS6238374A (en) Evaluation system for electronic circuit
JPS63184074A (en) Voltage detecting circuit
JPS62109114A (en) Voltage regulator
JPH0248720A (en) One chip microcomputer and its operation control method
JPS621194A (en) Semiconductor device
JPS62248309A (en) Amplifier circuit
JPH033660A (en) Switching power circuit
JPH03108194A (en) Semiconductor integrated circuit
JPH047868A (en) Semiconductor device
JPS62180682A (en) Switching circuit
JPH01272985A (en) Diagnosing device for non-power type majority decision circuit
JPH03142385A (en) Semiconductor integrated circuit
JPH02206831A (en) Full adder circuit
JPH04160520A (en) Semiconductor integrated circuit
JPS62280919A (en) Graphic input device
JPS6235937A (en) Pen input detecting circuit for coordinate input device
JPH04183142A (en) Signal detecting circuit
JPH01311722A (en) Configurable combination logic circuit
JPH02142360A (en) Protective device for inverter circuit
JPH02231757A (en) Semiconductor input protective circuit
JPS63307367A (en) Power-off signal generating circuit

Legal Events

Date Code Title Description
LAPS Cancellation because of no payment of annual fees