JPS54162417A - Low voltage detector circuit - Google Patents
Low voltage detector circuitInfo
- Publication number
- JPS54162417A JPS54162417A JP7093478A JP7093478A JPS54162417A JP S54162417 A JPS54162417 A JP S54162417A JP 7093478 A JP7093478 A JP 7093478A JP 7093478 A JP7093478 A JP 7093478A JP S54162417 A JPS54162417 A JP S54162417A
- Authority
- JP
- Japan
- Prior art keywords
- voltage
- vth
- output
- comparator
- noise
- 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
Links
Abstract
PURPOSE: To make it possible to make the response speed higher and lower for high-frequency noise, etc., and an input break time respectively by taking OR between the output of a high-response speed detection means and the output of a low-response speed detection means as a low voltage detection output.
CONSTITUTION: OR gate 11 is proviede which operates OR between the output of voltage comparator 6 (comparison voltage VTH1) and the output of voltage comparator 10 (comparison voltage VTH2, VTH1>VTH2). In respect to the response for the noise voltage at time t1, if VTH2 is set lower than the voltage drop dependent upon allowable noise, comparators 6 and 10 are not operated to output no low voltage detection output. Next, at time t2, though comparator 6 is operated at response time Td2,comparator 10 is operated immediately when the input voltage becomes below VTH2 because the input voltage passes through no integrating circuit, and the output of rapider one of voltage comparators is transmitted to power source 7 and unit 8 by gate 11. That is, the circuit does not cause malfunction at the allowable voltage drop by noise by setting VTH1>VTH2, and an extreme voltage drop can be detected surely even if this voltage drop is temporary.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7093478A JPS54162417A (en) | 1978-06-14 | 1978-06-14 | Low voltage detector circuit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7093478A JPS54162417A (en) | 1978-06-14 | 1978-06-14 | Low voltage detector circuit |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS54162417A true JPS54162417A (en) | 1979-12-24 |
Family
ID=13445825
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP7093478A Pending JPS54162417A (en) | 1978-06-14 | 1978-06-14 | Low voltage detector circuit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS54162417A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH03284132A (en) * | 1990-03-29 | 1991-12-13 | Toshiba Corp | Power unit |
JPH1172585A (en) * | 1997-06-17 | 1999-03-16 | Seiko Epson Corp | Power generation detection circuit, semiconductor device, electronic instrument, timepiece, power generation detection method and electric power consumption control method |
JP2020187810A (en) * | 2019-05-13 | 2020-11-19 | ウィンボンド エレクトロニクス コーポレーション | Semiconductor memory device |
JP2020187808A (en) * | 2019-05-13 | 2020-11-19 | ウィンボンド エレクトロニクス コーポレーション | Semiconductor memory device |
-
1978
- 1978-06-14 JP JP7093478A patent/JPS54162417A/en active Pending
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH03284132A (en) * | 1990-03-29 | 1991-12-13 | Toshiba Corp | Power unit |
JPH1172585A (en) * | 1997-06-17 | 1999-03-16 | Seiko Epson Corp | Power generation detection circuit, semiconductor device, electronic instrument, timepiece, power generation detection method and electric power consumption control method |
JP2020187810A (en) * | 2019-05-13 | 2020-11-19 | ウィンボンド エレクトロニクス コーポレーション | Semiconductor memory device |
JP2020187808A (en) * | 2019-05-13 | 2020-11-19 | ウィンボンド エレクトロニクス コーポレーション | Semiconductor memory device |
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