Lub Sijhawm Tiag Tiag-PCF8563T/F4,118

Real Time Clocks nti yog ib qho ntawm cov neeg siv khoom siv hluav taws xob ntau tshaj plaws hauv lub neej txhua hnub.Nws muab rau tib neeg nrog lub sijhawm tiag tiag, lossis rau cov tshuab hluav taws xob los muab lub sijhawm siv meej, Lub Sijhawm Clocks chips feem ntau siv cov khoom siv hluav taws xob ua haujlwm siab ua lub moos.Qee lub moos chips nyob rau hauv thiaj li yuav lub ntsiab lub hwj chim muab lub hwj chim down, tab sis kuj muaj peev xwm ua hauj lwm, yuav tsum tau ntxiv roj teeb lub hwj chim.

1).Cov khoom siv thaum ntxov RTC
Cov khoom lag luam RTC thaum ntxov yog qhov tseem ceeb sib faib zaus nrog lub khoos phis tawj sib txuas lus.Nws tau txais cov ntaub ntawv sijhawm xws li xyoo, hli, hnub, teev, feeb, thiab thib ob los ntawm kev faib thiab sib sau cov zaus oscillation tsim los ntawm cov siv lead ua thiab xa mus rau lub processor rau kev ua haujlwm los ntawm lub computer kev sib txuas lus chaw nres nkoj.
Cov yam ntxwv ntawm RTC nyob rau lub sijhawm no yog raws li hauv qab no: qhov chaw nres nkoj sib npaug ntawm cov kab tswj chaw nres nkoj;siv zog loj;siv cov txheej txheem CMOS zoo tib yam;lub pob yog ob npaug inline;cov nti feem ntau tsis muaj daim ntawv qhia hnub perpetual thiab leap xyoo thiab hli tsis siv neeg hloov kev ua haujlwm uas niaj hnub RTC muaj, thiab tsis tuaj yeem daws qhov teeb meem xyoo 2000.Tam sim no nws tau raug tshem tawm.
2).Mid-term RTC khoom
Nyob rau hauv nruab nrab-1990s, ib tiam tshiab ntawm RTC tau tshwm sim, uas siv cov txheej txheem CMOS tshwj xeeb;kev siv hluav taws xob tau txo qis heev, nrog tus nqi raug kwv yees li 0.5μA lossis tsawg dua;fais fab mov voltage tsuas yog 1.4V lossis tsawg dua;thiab lub computer kev sib txuas lus chaw nres nkoj kuj tau dhau los ua serial hom, xws li peb-xaim SIO / plaub-xaim SPI, qee yam khoom siv 2-xaim I2C tsheb npav;ntim SOP / SSOP pob, lub ntim Lub pob txais SOP / SSOP pob, thiab qhov loj me yog txo qis heev;
Functionality: cov qib ntawm kev txawj ntse ntawm cov chips tau nce ntau, nrog rau daim ntawv qhia hnub ua haujlwm tas mus li, kev tswj cov zis kuj tau hloov pauv thiab ntau yam.Ntawm lawv, Nyiv RICOH launched RTC tau txawm tshwm sim nyob rau hauv lub sij hawm lub hauv paus software tuning muaj nuj nqi (TTF) thiab oscillator nres tsis siv neeg nrhiav kom tau muaj nuj nqi thiab lub nti nqi yog heev tsawg.Tam sim no, cov chips no tau siv los ntawm cov neeg siv khoom ntau.
3).Lub cim tshiab ntawm RTC cov khoom
Lub cim tshiab ntawm RTC cov khoom, ntxiv rau muaj tag nrho cov haujlwm ntawm lub cim thib ob ntawm cov khoom, tseem ntxiv cov haujlwm sib xyaw ua ke, xws li kev ntsuas hluav taws xob tsawg, cov roj teeb tseem ceeb hloov pauv kev ua haujlwm, tiv thaiv luam ntawv board leakage muaj nuj nqi, thiab pob nws tus kheej. yog me me (qhov siab 0.85mm, thaj tsam ntawm tsuas yog 2mm * 2mm).

Lub Sijhawm Lub Sijhawm Lub Sijhawm nti nti lub sijhawm yuam kev feem ntau yog los ntawm lub moos nti hauv qhov siv lead ua zaus yuam kev, thiab qhov yuam kev siv lead ua feem ntau yog vim qhov kub thiab txias.Yog li ntawd, qhov kub ntawm cov siv lead ua resonant zaus ntawm qhov yuam kev tsim los ntawm kev them nyiaj zoo yog tus yuam sij rau kev txhim kho qhov tseeb ntawm lub moos.Lub quartz siv lead ua resonant zaus yuam kev them nyiaj txoj kev yog raws li paub qhov yuam kev ntawm cov siv lead ua resonant zaus nrog kev hloov ntawm qhov kub thiab txias, tsim kom muaj 1Hz zaus faib cov txee rau cov txheej txheem them nyiaj raug.
Lub luag haujlwm tseem ceeb tshaj plaws ntawm RTC yog muab lub sijhawm ua haujlwm txog li 2099, rau lub sijhawm, txawm tias qeeb npaum li cas los yog qeeb yog qhov yuam kev, thiab qhov sib txuam capacitor plays lub luag haujlwm tseem ceeb hauv cov khoom siv peripheral ntawm RTC, nws tuaj yeem kho qhov zoo. Qhov teeb meem sib piv ntawm cov siv lead ua thiab RTC.