JPS5480660A - Frequency demultiplication circuit - Google Patents

Frequency demultiplication circuit

Info

Publication number
JPS5480660A
JPS5480660A JP14774177A JP14774177A JPS5480660A JP S5480660 A JPS5480660 A JP S5480660A JP 14774177 A JP14774177 A JP 14774177A JP 14774177 A JP14774177 A JP 14774177A JP S5480660 A JPS5480660 A JP S5480660A
Authority
JP
Japan
Prior art keywords
output
circuit
counter
preset
stage
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
JP14774177A
Other languages
Japanese (ja)
Other versions
JPS6123896B2 (en
Inventor
Kenji Ichida
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 JP14774177A priority Critical patent/JPS5480660A/en
Publication of JPS5480660A publication Critical patent/JPS5480660A/en
Publication of JPS6123896B2 publication Critical patent/JPS6123896B2/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
    • H03K23/665—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 by presetting

Landscapes

  • Manipulation Of Pulses (AREA)
  • Electric Clocks (AREA)

Abstract

PURPOSE:To establish the frequency demultiplication circuit which is enabled to be small chips even with the CMOS integrated circuit having high speed operation used. CONSTITUTION:The frequency demultiplication system uses the expandor preset system, and when ''202'' is preset and the counters at post stage are all at ''0'', the output of the carrier out circuit 14 is ''1'', the output of the first memory circuit 14 is also ''1'' and ''200'' is preset with the output ''1'' of the first memory circui 15 with the post stage counter. Thus, the output of the counter of ''200'' is ''1'' and the output of the circuit 14 is ''0''. Assuming that all the flip flop circuits are operated at leading, the output of the first memory circuit 15 memorizes ''1''. Succeedingly, the counter 1 of the first stage is ''1'' with the input clock signals (8 signals) fed, and the output of the first stage carry out circuit 16 is ''1''. As a result, the output of the memory circuit 17 is also ''1'', ''2'' is preset for the counter 1 and the circuit 15 is reset, the output of the circuit 16 is ''0'', initiating normal count down.
JP14774177A 1977-12-10 1977-12-10 Frequency demultiplication circuit Granted JPS5480660A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14774177A JPS5480660A (en) 1977-12-10 1977-12-10 Frequency demultiplication circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14774177A JPS5480660A (en) 1977-12-10 1977-12-10 Frequency demultiplication circuit

Publications (2)

Publication Number Publication Date
JPS5480660A true JPS5480660A (en) 1979-06-27
JPS6123896B2 JPS6123896B2 (en) 1986-06-07

Family

ID=15437085

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14774177A Granted JPS5480660A (en) 1977-12-10 1977-12-10 Frequency demultiplication circuit

Country Status (1)

Country Link
JP (1) JPS5480660A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5726931A (en) * 1980-07-24 1982-02-13 Nec Corp Programmable counter

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4287430A4 (en) * 2021-01-27 2024-11-06 Sansha Electric Manufacturing Co., Ltd. POWER SUPPLY SYSTEM AND POWER SUPPLY UNIT

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5726931A (en) * 1980-07-24 1982-02-13 Nec Corp Programmable counter

Also Published As

Publication number Publication date
JPS6123896B2 (en) 1986-06-07

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