JPS5715536A - Rectangular wave output circuit - Google Patents

Rectangular wave output circuit

Info

Publication number
JPS5715536A
JPS5715536A JP9021380A JP9021380A JPS5715536A JP S5715536 A JPS5715536 A JP S5715536A JP 9021380 A JP9021380 A JP 9021380A JP 9021380 A JP9021380 A JP 9021380A JP S5715536 A JPS5715536 A JP S5715536A
Authority
JP
Japan
Prior art keywords
output
comparator
counter
rectangular wave
output circuit
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.)
Granted
Application number
JP9021380A
Other languages
Japanese (ja)
Other versions
JPH0213484B2 (en
Inventor
Shigetatsu Katori
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.)
NEC Corp
Original Assignee
NEC Corp
Nippon Electric Co Ltd
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, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP9021380A priority Critical patent/JPS5715536A/en
Publication of JPS5715536A publication Critical patent/JPS5715536A/en
Publication of JPH0213484B2 publication Critical patent/JPH0213484B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K23/00—Pulse counters comprising counting chains; Frequency dividers comprising counting chains
    • H03K23/64—Pulse counters comprising counting chains; Frequency dividers comprising counting chains with a base or radix other than a power of two
    • H03K23/66—Pulse counters comprising counting chains; Frequency dividers comprising counting chains with a base or radix other than a power of two with a variable counting base, e.g. by presetting or by adding or suppressing pulses

Abstract

PURPOSE:To obtain a number of output channels with less number of components, by using a comparator in time division and enabling to connect an arbitrary number of comparison registers to one set of counter and comparator. CONSTITUTION:A reference clock 4-1 produced from a reference clock generating circuit 3-2 is counted at an up-counter 3-1 and outputted to a comparator 3-5. On the other hand, data which designate the rectanguar wave duty and frequency by program are respectively stored in comparison registers 3-3 and 3-4, the output of which is outputted with a multiplexer 3-18 in time division and the coincidence with the output of the up-counter 3-1 is outptted from a comparator 3-5. A prescribed rectangular wave output is obtained at the output of RS-SS 3-8 inverted with the output from this coincidence signal.
JP9021380A 1980-07-02 1980-07-02 Rectangular wave output circuit Granted JPS5715536A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9021380A JPS5715536A (en) 1980-07-02 1980-07-02 Rectangular wave output circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9021380A JPS5715536A (en) 1980-07-02 1980-07-02 Rectangular wave output circuit

Publications (2)

Publication Number Publication Date
JPS5715536A true JPS5715536A (en) 1982-01-26
JPH0213484B2 JPH0213484B2 (en) 1990-04-04

Family

ID=13992196

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9021380A Granted JPS5715536A (en) 1980-07-02 1980-07-02 Rectangular wave output circuit

Country Status (1)

Country Link
JP (1) JPS5715536A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04240919A (en) * 1991-01-25 1992-08-28 Fujitsu Denso Ltd Frequency dividing circuit
WO2000008761A1 (en) * 1998-08-06 2000-02-17 Siemens Aktiengesellschaft Rational frequency divider
JP2020036203A (en) * 2018-08-30 2020-03-05 ラピスセミコンダクタ株式会社 Phase synchronization circuit

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53112651A (en) * 1977-03-12 1978-10-02 Nec Corp Variable frequency demultiplier

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53112651A (en) * 1977-03-12 1978-10-02 Nec Corp Variable frequency demultiplier

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04240919A (en) * 1991-01-25 1992-08-28 Fujitsu Denso Ltd Frequency dividing circuit
WO2000008761A1 (en) * 1998-08-06 2000-02-17 Siemens Aktiengesellschaft Rational frequency divider
US6445227B1 (en) 1998-08-06 2002-09-03 Siemens Aktiengesellaschaft Rational frequency divider
JP2020036203A (en) * 2018-08-30 2020-03-05 ラピスセミコンダクタ株式会社 Phase synchronization circuit

Also Published As

Publication number Publication date
JPH0213484B2 (en) 1990-04-04

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