SG165147A1 - Frequency determination circuit for a data processing unit - Google Patents

Frequency determination circuit for a data processing unit

Info

Publication number
SG165147A1
SG165147A1 SG200104731-5A SG2001047315A SG165147A1 SG 165147 A1 SG165147 A1 SG 165147A1 SG 2001047315 A SG2001047315 A SG 2001047315A SG 165147 A1 SG165147 A1 SG 165147A1
Authority
SG
Singapore
Prior art keywords
frequency
clock signal
determination circuit
processing unit
data processing
Prior art date
Application number
SG200104731-5A
Other languages
English (en)
Inventor
Hirofumi Saito
Original Assignee
Nec 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 Nec Corp filed Critical Nec Corp
Publication of SG165147A1 publication Critical patent/SG165147A1/en

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
    • G06F1/26—Power supply means, e.g. regulation thereof
    • G06F1/28—Supervision thereof, e.g. detecting power-supply failure by out of limits supervision
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R23/00—Arrangements for measuring frequencies; Arrangements for analysing frequency spectra
    • G01R23/02—Arrangements for measuring frequency, e.g. pulse repetition rate; Arrangements for measuring period of current or voltage
    • G01R23/15—Indicating that frequency of pulses is either above or below a predetermined value or within or outside a predetermined range of values, by making use of non-linear or digital elements (indicating that pulse width is above or below a certain limit)

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Dc-Dc Converters (AREA)
  • Manipulation Of Pulses (AREA)
  • Power Sources (AREA)
SG200104731-5A 2000-08-14 2001-08-07 Frequency determination circuit for a data processing unit SG165147A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2000245837A JP2002055130A (ja) 2000-08-14 2000-08-14 周波数判定回路、データ処理装置

Publications (1)

Publication Number Publication Date
SG165147A1 true SG165147A1 (en) 2010-10-28

Family

ID=18736283

Family Applications (1)

Application Number Title Priority Date Filing Date
SG200104731-5A SG165147A1 (en) 2000-08-14 2001-08-07 Frequency determination circuit for a data processing unit

Country Status (7)

Country Link
US (1) US20020017926A1 (fr)
EP (1) EP1180689A3 (fr)
JP (1) JP2002055130A (fr)
KR (1) KR20020013800A (fr)
CN (1) CN1340717A (fr)
HK (1) HK1040115A1 (fr)
SG (1) SG165147A1 (fr)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4100985B2 (ja) 2002-07-16 2008-06-11 Ｎｅｃエレクトロニクス株式会社 データ処理装置、半導体記憶装置及びクロック周波数検出方法
US7504865B2 (en) * 2004-03-09 2009-03-17 Panasonic Corporation Frequency sensor and semiconductor device
US7839697B2 (en) 2006-12-21 2010-11-23 Panasonic Corporation Semiconductor memory device
TWI382184B (zh) * 2009-02-27 2013-01-11 Realtek Semiconductor Corp 頻率偵測裝置與方法
TWI528700B (zh) * 2013-05-03 2016-04-01 瑞昱半導體股份有限公司 頻率偵側裝置
US9851416B2 (en) 2014-07-22 2017-12-26 Allegro Microsystems, Llc Systems and methods for magnetic field sensors with self-test
CN104122441B (zh) * 2014-07-23 2016-08-24 上海华虹宏力半导体制造有限公司 频率检测装置
KR102161821B1 (ko) 2014-08-26 2020-10-06 삼성전자주식회사 클록 모니터 및 이를 포함하는 시스템 온 칩
US10156461B2 (en) 2014-10-31 2018-12-18 Allegro Microsystems, Llc Methods and apparatus for error detection in a magnetic field sensor
KR20170111572A (ko) * 2016-03-29 2017-10-12 삼성전자주식회사 반도체 메모리 장치 및 이의 동작 방법
US11848682B2 (en) 2022-01-11 2023-12-19 Allegro Microsystems, Llc Diagnostic circuits and methods for analog-to-digital converters

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4672299A (en) * 1986-05-23 1987-06-09 American Telephone And Telegraph Co. Clock control circuit for phase control
JPS62294974A (ja) * 1986-05-27 1987-12-22 Toshiba Corp パルス周期検出回路
KR910004526B1 (ko) * 1988-03-31 1991-07-05 삼성전자 주식회사 워치독 타이머회로
US5180935A (en) * 1990-11-09 1993-01-19 Motorola, Inc. Digital timing discriminator
DE4332481A1 (de) * 1993-09-24 1995-03-30 Bosch Gmbh Robert Schaltungsanordnung zur Erzeugung von Impulsen
US5546025A (en) * 1994-03-11 1996-08-13 Mitel, Inc. Low frequency discrimator using upper and lower thresholds

Also Published As

Publication number Publication date
HK1040115A1 (zh) 2002-05-24
CN1340717A (zh) 2002-03-20
JP2002055130A (ja) 2002-02-20
KR20020013800A (ko) 2002-02-21
US20020017926A1 (en) 2002-02-14
EP1180689A3 (fr) 2003-07-02
EP1180689A2 (fr) 2002-02-20

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