Logic & Flip Flops-SN74LVC74APWR

Flip-FlopnaLatchni ibikoresho bya elegitoroniki bisanzwe hamwe na leta ebyiri zihamye zishobora b e kubika amakuru, hamwe na flip-flop cyangwa latch irashobora kubika 1 biti yamakuru.

Flip-Flop (Amagambo ahinnye yitwa FF), azwi kandi nk'irembo rinini, rizwi kandi nka flip-flop, ni umuyoboro wa logique ushobora gukorera muri leta ebyiri.Flip-flops iguma muri leta kugeza igihe yakiriye pulse yinjiza, izwi kandi nka trigger.Iyo kwinjiza pulse byakiriwe, flip-flop ibisohoka bihindura leta ukurikije amategeko hanyuma bikaguma muri iyo leta kugeza indi mbarutso yakiriwe.

Latch, yunvikana kurwego rwa pulse, ihindura leta munsi yurwego rwisaha yisaha, latch ni urwego-rwashizweho nububiko, kandi ibikorwa byo kubika amakuru biterwa nurwego rwagaciro rwibimenyetso byinjira, gusa iyo latch iri muri gushoboza leta, ibisohoka bizahinduka hamwe namakuru yinjiye.Latch iratandukanye na flip-flop, ntabwo irekuye amakuru, ibimenyetso kubisohoka bihinduka hamwe nibimenyetso byinjira, kimwe nikimenyetso kinyura muri buffer;ibimenyetso bimaze kumera nkibikoresho, amakuru arafunzwe kandi ibimenyetso byinjira ntibikora.Ikibaho nacyo cyitwa icyuma kibonerana, bivuze ko ibisohoka bibonerana kubyinjira mugihe bidatinze.

Itandukaniro riri hagati ya latch na flip-flop
Latch na flip-flop nibikoresho bibiri byo kubika hamwe nibikorwa byo kwibuka, nimwe mubikoresho byibanze byo guhimba ibihe bitandukanye bya logique.Itandukaniro ni: latch ifitanye isano nibimenyetso byayo byose byinjira, mugihe ibimenyetso byinjira bihinduye latch ihinduka, ntamasaha yisaha;flip-flop iyobowe nisaha, gusa iyo isaha itangijwe kugirango yerekane ibyinjijwe, kubyara umusaruro.Birumvikana, kubera ko byombi na flip-flop ari igihe cyumvikana, ibisohoka ntabwo bifitanye isano ninjiza gusa, ahubwo bifitanye isano nibisohoka mbere.

1. latch iterwa nurwego, ntabwo igenzura.DFF iterwa nisaha yisaha hamwe no kugenzura.

2 、 latch yunvikana kurwego rwo kwinjiza kandi igaterwa no gutinda kwinsinga, biragoye rero kwemeza ko ibisohoka bidatanga burrs;DFF ntabwo ishobora kubyara burrs.

3.Kubwibyo, guhuriza hamwe gukoresha latch muri ASIC birarenze DFF, ariko ibinyuranye nukuri muri FPGA, kubera ko muri FPGA nta gice gisanzwe gihari, ariko hariho DFF, kandi LATCH ikeneye LE irenze imwe kugirango igerweho.latch ni urwego rukurura, bihwanye no kugira iherezo rishoboka, kandi nyuma yo gukora (mugihe cyo gukora urwego) bihwanye numuyoboro, uhinduka hamwe nibisohoka biratandukanye nibisohoka.Muri leta idashoboye ni ukubungabunga ibimenyetso byumwimerere, bishobora kugaragara no gutandukanya flip-flop, mubyukuri, inshuro nyinshi latch ntabwo isimbura ff.

4, ibishishwa bizahinduka bigoye cyane isesengura ryigihe.

5, kuri ubu, latch ikoreshwa gusa murwego rwohejuru cyane, nka Intel ya P4 CPU.FPGA ifite ibice, ibice byiyandikisha birashobora gushyirwaho nkigice cyo gufunga, mu gitabo cya xilinx v2p kizashyirwaho nkigice cyo kwiyandikisha / icyuma, umugereka ni xilinx igice cyigice cyububiko.Izindi moderi nabakora FPGAs ntabwo bagiye kugenzura.--Mu muntu ku giti cyanjye, ndatekereza ko xilinx ishoboye guhuza neza na altera ishobora kuba ibibazo byinshi, kuri LE nkeya yo gukora, icyakora, ntabwo igikoresho cya xilinx buri gice gishobora gushyirwaho kuburyo bugaragara, interineti ya DDR yonyine ya DDR ifite igice cyihariye, muri rusange gusa umuvuduko mwinshi uzunguruka uzakoreshwa mugushushanya.LE ya altera ntabwo yubatswe, kandi urebe sp3 na sp2e, nibindi bitagenzurwa, imfashanyigisho ivuga ko iboneza rishyigikiwe.Imvugo wangdian kubyerekeye altera nukuri, ff ya altera ntishobora gushyirwaho kugirango ikoreshwe, ikoresha imbonerahamwe yo gushakisha kugirango ishyire mubikorwa.

Igishushanyo mbonera rusange ni: irinde gufunga mubishushanyo byinshi.bizagufasha gushushanya igihe kirangiye, kandi kirahishe cyane, utari umukambwe ntashobora kubona.gufunga akaga gakomeye ntabwo ari gushungura burrs.Ibi ni bibi cyane kurwego rukurikira rwumuzunguruko.Kubwibyo, igihe cyose ushobora gukoresha D flip-flop, ntukoreshe latch.