JPS56128024A - Frequency divider - Google Patents

Frequency divider

Info

Publication number
JPS56128024A
JPS56128024A JP3110580A JP3110580A JPS56128024A JP S56128024 A JPS56128024 A JP S56128024A JP 3110580 A JP3110580 A JP 3110580A JP 3110580 A JP3110580 A JP 3110580A JP S56128024 A JPS56128024 A JP S56128024A
Authority
JP
Japan
Prior art keywords
frequency dividing
data
level
output
state
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
JP3110580A
Other languages
Japanese (ja)
Other versions
JPS6250006B2 (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 JP3110580A priority Critical patent/JPS56128024A/en
Publication of JPS56128024A publication Critical patent/JPS56128024A/en
Publication of JPS6250006B2 publication Critical patent/JPS6250006B2/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 obtain a high-speed characteristic by means of a simple circuit configuration, by correcting so that a frequency dividing circuit outputs a data which is equal to a frequency dividing value data, in case when an output data of the frequency dividing circuit to which the frequency dividing data is provided is different from the frequency dividing data. CONSTITUTION:In case when the frequency dividing circuits 20-80 of the second stage and thereafter are set to a state ''1'', when the output of the inverter 33 is in ''1'' level, that is to say, when it is inhibited to input a preset data, an input signal which rises to ''1'' level is applied to the frequency dividing circuit 20. When a state of the frequency divider is 10,000,000, the output of the inverter 33 becomes ''0'' level, therefore, when a preset signal is inputted at that time, the contents of only a counter in which a preset data is positioned at ''0'' are corrected to ''0'', and as a result, a normal preset data N value is set. In this way, since only a frequency dividing circuit which is in a down-counted state is corrected, a high speed characteristic can be obtained.
JP3110580A 1980-03-12 1980-03-12 Frequency divider Granted JPS56128024A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3110580A JPS56128024A (en) 1980-03-12 1980-03-12 Frequency divider

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3110580A JPS56128024A (en) 1980-03-12 1980-03-12 Frequency divider

Publications (2)

Publication Number Publication Date
JPS56128024A true JPS56128024A (en) 1981-10-07
JPS6250006B2 JPS6250006B2 (en) 1987-10-22

Family

ID=12322115

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3110580A Granted JPS56128024A (en) 1980-03-12 1980-03-12 Frequency divider

Country Status (1)

Country Link
JP (1) JPS56128024A (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52146162A (en) * 1976-05-29 1977-12-05 Toshiba Corp Programmable counter
JPS5359350A (en) * 1976-11-09 1978-05-29 Nec Corp Variable frequency dividing circuit
JPS5448475A (en) * 1977-09-26 1979-04-17 Toshiba Corp Programmable counter

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52146162A (en) * 1976-05-29 1977-12-05 Toshiba Corp Programmable counter
JPS5359350A (en) * 1976-11-09 1978-05-29 Nec Corp Variable frequency dividing circuit
JPS5448475A (en) * 1977-09-26 1979-04-17 Toshiba Corp Programmable counter

Also Published As

Publication number Publication date
JPS6250006B2 (en) 1987-10-22

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