ES2115319T3 - Aparato contador reversible. - Google Patents

Aparato contador reversible.

Info

Publication number
ES2115319T3
ES2115319T3 ES95303748T ES95303748T ES2115319T3 ES 2115319 T3 ES2115319 T3 ES 2115319T3 ES 95303748 T ES95303748 T ES 95303748T ES 95303748 T ES95303748 T ES 95303748T ES 2115319 T3 ES2115319 T3 ES 2115319T3
Authority
ES
Spain
Prior art keywords
counter cell
cell circuit
output
significant
toggle
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.)
Expired - Lifetime
Application number
ES95303748T
Other languages
English (en)
Inventor
Imran Bagai
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.)
Advanced Micro Devices Inc
Original Assignee
Advanced Micro Devices Inc
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 Advanced Micro Devices Inc filed Critical Advanced Micro Devices Inc
Application granted granted Critical
Publication of ES2115319T3 publication Critical patent/ES2115319T3/es
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • H03K23/40—Gating or clocking signals applied to all stages, i.e. synchronous counters
    • H03K23/50—Gating or clocking signals applied to all stages, i.e. synchronous counters using bi-stable regenerative trigger circuits
    • H03K23/56—Reversible counters
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K23/00—Pulse counters comprising counting chains; Frequency dividers comprising counting chains
    • H03K23/004—Counters counting in a non-natural counting order, e.g. random counters
    • H03K23/005—Counters counting in a non-natural counting order, e.g. random counters using minimum change code, e.g. Gray Code

Landscapes

  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Ultra Sonic Daignosis Equipment (AREA)
  • Electrophonic Musical Instruments (AREA)
  • Selective Calling Equipment (AREA)
  • Measuring Frequencies, Analyzing Spectra (AREA)
  • Processing Of Color Television Signals (AREA)
  • Electronic Switches (AREA)

Abstract

UN APARATO PARA CONTAR EVENTOS DE UNA ENTRADA PARTICULAR DURANTE UNA PLURALIDAD DE PERIODOS SUCESIVOS. EL APARATO COMPRENDE UN TERMINAL DE ENTRADA (18) PARA RECIBIR LA ENTRADA,UN CIRCUITO GENERADOR DE SEÑAL DE DISPARO (12) PARA GENERAR UNA SEÑAL DE DISPARO PARA MARCAR LA PLURALIDAD DE PERIODOS, Y UNA PLURALIDAD DE N CIRCUITOS DE CELULAS CONTADORAS (16{SUB,0},....16{SUB,N}) PARA EFECTUAR EL RECUENTO EN N BITS. CADA CIRCUITO DE CELULAS CONTADORAS GENERA AL MENOS UNA SALIDA DE BITS (Q{SUB,I}), UNA SALIDA DE DISPARO RESPECTIVA (T{SUB,I}), Y SALIDA PORTADORA RESPECTIVA (C{SUB,I}). LOS CIRCUITOS DE CELULA CONTADORA (16{SUB,O),....16{SUB,N}) ESTAN DISPUESTOS EN ORDEN JERARQUICO A PARTIR DE UN CIRCUITO DE CELULA CONTADOR MENOS SIGNIFICANTE (16{SUB,0}) A AL MENOS UN CIRCUITO DE CELULA CONTADORA MAS SIGNIFICANTE (16{SUB,N}). CADA UNO DE LOS CIRCUITOS DE CELULA CONTADORA RESPECTIVOS SE ACOPLA AL SIGUIENTE CIRCUITO DE CELULA CONTADORA MAS SIGNIFICANTE Y PREVE LA SALIDA DE DISPARO RESPECTIVA AL SIGUIENTE CIRCUITO DE CELULA CONTADORA DE SALIDA DE DISPARO MAS SIGNIFICANTE COMO UNA ENTRADA DE DISPARO RESPECTIVO, PREVE LA SALIDA PORTADORA RESPECTIVA AL SIGUIENTE CIRCUITO DE CELULA CONTADORA MAS SIGNIFICANTE COMO LA ENTRADA PORTADORA RESPECTIVA, SALVO QUE EL CIRCUITO DE CELULA CONTADORA MAS SIGNIFICANTE (16{SUB,N}) RECIBE LA ENTRADA DE DISPARO RESPECTIVA (T{SUB, N}) DE LA SALIDA PORTADORA RESPECTIVA (C[SUB, N-1}) DEL CIRCUITO DE CELULA CONTADORA DOS VECES MENOS SIGNIFICANTES (16{SUB,N-2}).
ES95303748T 1994-06-09 1995-06-01 Aparato contador reversible. Expired - Lifetime ES2115319T3 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US08/257,543 US5428654A (en) 1994-06-09 1994-06-09 Up/down counter apparatus

Publications (1)

Publication Number Publication Date
ES2115319T3 true ES2115319T3 (es) 1998-06-16

Family

ID=22976718

Family Applications (1)

Application Number Title Priority Date Filing Date
ES95303748T Expired - Lifetime ES2115319T3 (es) 1994-06-09 1995-06-01 Aparato contador reversible.

Country Status (5)

Country Link
US (1) US5428654A (es)
EP (1) EP0691744B1 (es)
AT (1) ATE165697T1 (es)
DE (1) DE69502243D1 (es)
ES (1) ES2115319T3 (es)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3657191B2 (ja) 2000-12-07 2005-06-08 シャープ株式会社 アップ／ダウングレーコードカウンタおよびこれを備えた固体撮像装置
US6826249B1 (en) * 2002-10-10 2004-11-30 Xilinx, Inc. High-speed synchronous counters with reduced logic complexity
US7194500B2 (en) * 2003-07-11 2007-03-20 Sony Corporation Scalable gray code counter
US7702061B2 (en) * 2007-12-17 2010-04-20 Integrated Device Technology, Inc. High speed hybrid structure counter having synchronous timing and asynchronous counter cells
DE102010013683B4 (de) * 2010-04-01 2012-10-31 Siemens Aktiengesellschaft EMI Reduktion mit spezieller Codierung von Counter-Signalen
KR20130015460A (ko) * 2011-08-03 2013-02-14 에스케이하이닉스 주식회사 반도체 장치의 카운팅 회로 및 이를 이용한 반도체 장치의 듀티 보정 회로
US9621169B2 (en) * 2014-02-26 2017-04-11 Taiwan Semiconductor Manufacturing Company Limited Gray code counter
CN114553240A (zh) * 2020-11-25 2022-05-27 夏普半导体创新株式会社 多位格雷码生成电路

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH422061A (de) * 1964-10-07 1966-10-15 Hasler Ag Elektronische Zählkette
JPS59181831A (ja) * 1983-03-31 1984-10-16 Toshiba Corp 可変分周器
US4618849A (en) * 1984-10-31 1986-10-21 Rca Corporation Gray code counter
US4780894A (en) * 1987-04-17 1988-10-25 Lsi Logic Corporation N-bit gray code counter
US5020082A (en) * 1988-06-15 1991-05-28 Seiko Epson Corporation Asynchronous counter
US4937845A (en) * 1988-08-01 1990-06-26 Plessey Electronic Systems Corp. Fast library element gray code generators without feedback and feedforward networks
US5062126A (en) * 1990-03-26 1991-10-29 Hughes Aircraft Company High speed synchronous counter system and process with look-ahead carry generating circuit
US5097491A (en) * 1990-05-31 1992-03-17 National Semiconductor Corporation Modular gray code counter
US5164968A (en) * 1991-10-15 1992-11-17 Loral Aerospace Corp. Nine bit Gray code generator
US5355396A (en) * 1991-12-30 1994-10-11 Texas Instruments Incorporated Circuitry and method for modularized single transition counting

Also Published As

Publication number Publication date
EP0691744B1 (en) 1998-04-29
US5428654A (en) 1995-06-27
EP0691744A1 (en) 1996-01-10
DE69502243D1 (de) 1998-06-04
ATE165697T1 (de) 1998-05-15

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