Amawashi Esikhathi Sangempela-PCF8563T/F4,118

I-Real Time Clocks chip ingenye yezinto zikagesi ezisetshenziswa kakhulu zabathengi empilweni yansuku zonke.Ihlinzeka abantu ngesikhathi sangempela esinembile, noma amasistimu e-elekthronikhi ukuze anikeze inkomba yesikhathi esinembile, ama-chips Wamawashi Esikhathi Sangempela ngokuvamile asebenzisa i-crystal oscillator enembe kakhulu njengomthombo wewashi.Amanye ama-chip wewashi ukuze anikeze amandla amakhulu amandla aphansi, kodwa futhi angasebenza, isidingo samandla ebhethri engeziwe.

1).Imikhiqizo yokuqala ye-RTC
Imikhiqizo yakuqala ye-RTC empeleni iyizihlukanisi zemvamisa ezinembobo yokuxhumana yekhompyutha.Ithola ulwazi lwesikhathi olufana nonyaka, inyanga, usuku, ihora, umzuzu, nomzuzwana ngokuhlukanisa nokuqongelela imvamisa ye-oscillation ekhiqizwe ikristalu futhi iyithumele kumprosesa ukuze icutshungulwe ngembobo yokuxhumana yekhompyutha.
Izici ze-RTC kulesi sikhathi zimi kanje: imbobo ehambisanayo kulayini wembobo yokulawula;ukusetshenziswa kwamandla okukhulu;usebenzisa inqubo evamile ye-CMOS;iphakheji i-double inline;i-chip ngokuvamile ayinalo ikhalenda elingapheli kanye nomsebenzi wokushintsha ngokuzenzakalelayo unyaka nenyanga i-RTC yesimanje enawo, futhi ayikwazi ukubhekana nenkinga yonyaka ka-2000.Manje isiqediwe.
2).Imikhiqizo ye-RTC emaphakathi
Maphakathi nawo-1990, kwavela isizukulwane esisha se-RTC, esisebenzisa inqubo ekhethekile ye-CMOS;ukusetshenziswa kwamandla kuncishiswe kakhulu, ngenani elijwayelekile elingaba ngu-0.5μA noma ngaphansi;I-voltage yokuphakelwa kwamandla ingu-1.4V kuphela noma ngaphansi;futhi imbobo yokuxhumana ngekhompyutha isiphenduke imodi ye-serial, njenge-SIO yezintambo ezintathu / i-SPI yezintambo ezine, eminye imikhiqizo esebenzisa ibhasi le-I2C elinezintambo ezi-2;ukupakisha iphakheji ye-SOP / SSOP, ivolumu Iphakheji yamukela iphakheji ye-SOP/SSOP, futhi usayizi wehliswa kakhulu;
Ukusebenza: izinga le-on-chip intelligence liye landa kakhulu, ngomsebenzi wekhalenda ongapheli, ukulawula okukhiphayo nakho sekuguquguquka futhi kwahlukahluka.Phakathi kwazo, i-Japan RICOH yethule i-RTC isize yavela emsebenzini wokulungisa isoftware yesikhathi (TTF) kanye ne-oscillator emisa umsebenzi wokutholwa okuzenzakalelayo futhi intengo ye-chip iphansi kakhulu.Njengamanje, lawa ma-chips asesetshenziswa ngamakhasimende ngobuningi.
3).Isizukulwane sakamuva semikhiqizo ye-RTC
Isizukulwane sakamuva semikhiqizo ye-RTC, ngaphezu kokuqukatha yonke imisebenzi yesizukulwane sesibili semikhiqizo, siphinde sengeza imisebenzi eyinhlanganisela, njengokutholwa kwe-voltage ephansi, umsebenzi wokushintsha ibhethri oyisipele, umsebenzi wokuvuza webhodi elimelene nokuphrinta, kanye nephakheji ngokwalo. incane (ubude 0.85mm, indawo 2mm * 2mm kuphela).

Iphutha lesikhathi se-chip Amawashi Esikhathi Sangempela lisuka ku-chip yewashi ephutheni lefrikhwensi yekristalu, futhi iphutha lefrikhwensi yekristalu ngokuyinhloko libangelwe ukushintsha kwezinga lokushisa.Ngakho-ke, izinga lokushisa le-crystal resonant frequency yephutha elenziwe isinxephezelo esisebenzayo kuyisihluthulelo sokuthuthukisa ukunemba kwewashi.Indlela yesinxephezelo sephutha le-quartz crystal resonant frequency isekelwe ephutheni elaziwayo le-crystal resonant frequency ngokushintsha kwezinga lokushisa, ukukhiqiza isibali sokuhlukanisa imvamisa esingu-1Hz sendlela yesinxephezelo enembile.
Umsebenzi obaluleke kakhulu we-RTC ukuhlinzeka ngomsebenzi wekhalenda kuze kufike ku-2099, isikhathi, kungakhathaliseki ukuthi iphutha lishesha kangakanani noma lihamba kancane kangakanani, futhi i-capacitor ehambisanayo idlala indima ebaluleke kakhulu kumadivayisi we-peripheral we-RTC, ingalungisa kahle ukufanisa inkinga phakathi kwekristalu ne-RTC.