Iiwotshi zexesha lokwenyani-PCF8563T/F4,118

Iiwotshi zeXesha lokwenyani yenye yezona zinto zisetyenziswa kakhulu kwi-elektroniki yabathengi kubomi bemihla ngemihla.Inika abantu ixesha elichanekileyo lexesha langempela, okanye kwiinkqubo ze-elektroniki ukubonelela ngereferensi yexesha elichanekileyo, iitshiphusi zeXesha lokwenyani zisebenzisa kakhulu i-crystal oscillator echanekileyo njengomthombo wewotshi.Ezinye iitshiphusi zewotshi ukuze kubonelelwe ngamandla amandla ezantsi, kodwa zinokusebenza, imfuno yamandla ebhetri ongezelelweyo.

1).Iimveliso zeRTC zakwangoko
Iimveliso ze-RTC zakwangoko zezahluli rhoqo kunye nezibuko lonxibelelwano lwekhompyuter.Ifumana ulwazi lwexesha elinjengonyaka, inyanga, usuku, iyure, umzuzu, kunye nesibini ngokwahlula kunye nokuqokelela i-oscillation frequency eyenziwe yikristale kwaye iyithumele kwiprosesa ukuze iqhutywe ngechweba lonxibelelwano lwekhompyuter.
Iimpawu ze-RTC ngeli xesha zilandelayo: i-port ehambelanayo kumgca we-port yokulawula;ukusetyenziswa kwamandla amakhulu;usebenzisa inkqubo yeCMOS eqhelekileyo;iphakheji iphindwe kabini emgceni;I-chip ngokubanzi ayinayo ikhalenda engapheliyo kunye nomnyaka wokutsiba kunye nenyanga yokutshintsha okuzenzekelayo i-RTC yanamhlanje, kwaye ayikwazi ukusingatha ingxaki yonyaka we-2000.Ngoku isusiwe.
2).Iimveliso ze-RTC eziphakathi kwexesha
Phakathi kwiminyaka yee-1990, kwavela isizukulwana esitsha se-RTC, esisebenzisa inkqubo ekhethekileyo yeCMOS;ukusetyenziswa kwamandla kuncitshiswe kakhulu, ngexabiso eliqhelekileyo malunga ne-0.5μA okanye ngaphantsi;Umbane wokubonelela ngombane yi-1.4V kuphela okanye ngaphantsi;kunye nechweba lonxibelelwano lwekhompyutha luye lwaba yimowudi ye-serial, njenge-SIO ye-SIO / i-4-wire SPI, ezinye iimveliso zisebenzisa i-2-wire I2C ibhasi;ukupakisha iphakheji ye-SOP / SSOP, umthamo Iphakheji ithatha iphakheji ye-SOP/SSOP, kwaye ubungakanani buncitshiswe kakhulu;
Ukusebenza: iqondo le-intelligence ye-chip liye landa kakhulu, kunye nomsebenzi ongapheliyo wekhalenda, ulawulo lwemveliso luye lwaba bhetyebhetye kwaye lwahluka.Phakathi kwabo, iJapan RICOH isungule i-RTC ide yavela nakwi-software yesiseko sexesha (TTF) kunye ne-oscillator eyeka umsebenzi wokubhaqa ngokuzenzekelayo kwaye ixabiso le-chip liphantsi kakhulu.Okwangoku, ezi chips zisetyenziswe ngabathengi ngamanani amakhulu.
3).Isizukulwana samva nje seemveliso zeRTC
Isizukulwana samva nje seemveliso zeRTC, ukongeza ekuqulatheni yonke imisebenzi yesizukulwana sesibini seemveliso, songeze imisebenzi edibeneyo, njengokubhaqa i-voltage ephantsi, umsebenzi ophambili wokutshintsha ibhetri, umsebenzi wokuvuza webhodi yokuchasana, kunye nephakheji ngokwayo. incinci (ubude 0.85mm, indawo ye-2mm * 2mm kuphela).

Ixesha lokwenyani Iiwotshi zexesha lemposiso yetshiphu ubukhulu becala isuka kwitshiphu yewotshi kwimpazamo yamaza ekristale, kwaye impazamo yefrikhwensi yekristale ikakhulu ngenxa yotshintsho lobushushu obubangelwayo.Ke ngoko, ubushushu be-crystal resonant frequency yempazamo eyenziwe yimbuyekezo esebenzayo ngundoqo ekuphuculeni ukuchaneka kwewotshi.Indlela yembuyekezo yempazamo ye-quartz crystal resonant frequency isekelwe kwimpazamo eyaziwayo ye-crystal resonant frequency kunye nokutshintsha kobushushu, ukuvelisa i-counter ye-1Hz ye-frequency division counter yendlela yembuyekezo echanekileyo.
Owona msebenzi ubalulekileyo we-RTC kukubonelela ngomsebenzi wekhalenda ukuya kuthi ga ku-2099, ixesha, kungakhathaliseki ukuba impazamo okanye icotha kangakanani na, kwaye i-capacitor ehambelanayo idlala indima ebaluleke kakhulu kwizixhobo ze-peripheral ze-RTC, inokulungisa ngokufanelekileyo ingxaki yokudibanisa phakathi kwekristale kunye ne-RTC.