SEMICONDUCTOR CIRCUIT, VOLTAGE DETECTION CIRCUIT AND VOLTAGE DETERMINATION CIRCUIT

PROBLEM TO BE SOLVED: To provide a semiconductor circuit, voltage detection circuit and voltage determination circuit capable of setting different power-on reset threshold voltages in a rise state and a fall state of a power supply while avoiding increase in circuit scale and current consumption.SOL...

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Bibliographic Details
Main Author TAKEMURA TAKASHI
Format Patent
LanguageEnglish
Japanese
Published 26.05.2016
Subjects
BASIC ELECTRONIC CIRCUITRY
ELECTRICITY
PULSE TECHNIQUE
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Summary:PROBLEM TO BE SOLVED: To provide a semiconductor circuit, voltage detection circuit and voltage determination circuit capable of setting different power-on reset threshold voltages in a rise state and a fall state of a power supply while avoiding increase in circuit scale and current consumption.SOLUTION: A power-on reset circuit 10 includes: a p-type MOS transistor P11; a first N-type MOS transistor N11; an output circuit O1 which outputs a first output signal and a second output signal according to a potential of a junction between a first drain P11D and a second drain N11D; a second N-type MOS transistor N12; and a third N-type MOS transistor.SELECTED DRAWING: Figure 1 【課題】回路規模及び消費電流の増大を抑制して、電源の立ち上がり状態と立下り状態とで、異なるパワーオンリセット閾値電圧を設定することができる、半導体回路、電圧検出回路、及び電圧判定回路を提供する。【解決手段】パワーオンリセット回路１０は、Ｐ型ＭＯＳトランジスタＰ１１と、第１のＮ型ＭＯＳトランジスタＮ１１と、第１のドレインＰ１１Ｄと第２のドレインＮ１１Ｄとの接続点の電位に応じて、第１の出力信号を出力すると共に、第２の出力信号を出力する出力回路Ｏ１と、第２のＮ型ＭＯＳトランジスタＮ１２と、第３のＮ型ＭＯＳトランジスタとを備えている。【選択図】図１
Bibliography:Application Number: JP20150058521