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DS12C887

Real Time Clock

DESCRIPTION TheDS12C887RealTimeClockplusRAMisdesignedasadirectupgradereplacementfortheDS12887inexistingIBMcompatiblepersonalcomputerstoaddhardwareyear2000compliance.Acenturybytewasaddedtomemorylocation50,32h,ascalledoutbythePCATspecification.Alithiu

DS12C887

Real-Time Clock

GeneralDescription TheDS12885,DS12887,andDS12C887real-timeclocks(RTCs)aredesignedtobedirectreplacementsfortheDS1285andDS1287.Thedevicesprovideareal-timeclock/calendar,onetime-of-dayalarm,threemaskableinterruptswithacommoninterruptoutput,aprogrammablesquarew

DS12C887

Real-Time Clock

GeneralDescription TheDS12885,DS12887,andDS12C887real-time clocks(RTCs)aredesignedtobedirectreplacements fortheDS1285andDS1287.Thedevicesprovidea real-timeclock/calendar,onetime-of-dayalarm,three maskableinterruptswithacommoninterruptoutput,a programmablesqu

DS12C887

實(shí)時(shí)時(shí)鐘; ? 直接替代IBM AT計(jì)算機(jī)時(shí)鐘/日歷\n? RTC計(jì)算秒、分、時(shí)、星期、日、月、年信息，具有潤年補(bǔ)償，有效期至2099年\n? 用二進(jìn)制或BCD表示時(shí)間\n? 具有AM、PM標(biāo)示的12小時(shí)模式或24小時(shí)模式\n? 夏時(shí)制選擇\n? 可選擇Intel或Motorola總線時(shí)序\n? 接口配合軟件可尋址128 RAM\n? 14字節(jié)時(shí)鐘與控制寄存器\n? 114字節(jié)通用、電池備份RAM (DS12C887和DS12C887A為113字節(jié))\n? 清除RAM功能(DS12885、DS12887A和DS12C887A)\n? 三路中斷可分別通過軟件屏蔽與檢測\n? 鬧鐘可設(shè)置為每秒一次至每星期一次\n? 周期可設(shè)置在122μs至500ms \n? 時(shí)鐘終止刷新周期標(biāo)志\n? 可編程的方波輸出信號(hào)\n? 自動(dòng)電源失效檢測和切換電路\n? 可選擇28引腳PLCC表面貼裝封裝或32引腳TQFP封裝(DS12885)\n? 可選則集成了晶體和電池的DIP模塊(EDIP)封裝(DS12887、DS12887A、DS12C887、DS12C887A)\n? 可選的工業(yè)級(jí)溫度范圍;

DS12885、DS12887和DS12C887實(shí)時(shí)時(shí)鐘(RTC)可用來直接替代DS1285和DS1287。該器件提供一個(gè)實(shí)時(shí)時(shí)鐘/日歷、定時(shí)鬧鐘、三個(gè)可屏蔽中斷(共用一個(gè)中斷輸出)、可編程方波輸出和114字節(jié)的電池備份靜態(tài)RAM (DS12C887和DS12C887A包含113字節(jié)RAM)。DS12887在24引腳模塊DIP封裝內(nèi)集成了晶體和鋰電池。DS12C887在地址32h內(nèi)增加了世紀(jì)字節(jié)。對(duì)于少于31天的月份，所有器件的日期能夠在月末自動(dòng)調(diào)整，帶有閏年補(bǔ)償。該器件可配置為24小時(shí)或12小時(shí)格式，帶AM/PM指示。精確的溫度補(bǔ)償電路用于監(jiān)視的VCC狀態(tài)。一旦檢測到主電源失效，器件可自動(dòng)切換到備用電源。鈕扣式鋰電池可以連接到DS12885的VBAT輸入引腳，在主電源掉電時(shí)保持有效的時(shí)間和日期。該器件通過一個(gè)復(fù)用的、字節(jié)寬度接口訪問，支持Intel和Motorola模式。\n\n \n\n

DS12C887

Real-Time Clocks

DS12C887

Real Time Clock

DS12C887

Package：24-DIP 模塊（0.600"，15.24mm）；包裝：管件 類別：集成電路（IC） 實(shí)時(shí)時(shí)鐘 描述：IC RTC CLK/CALENDAR PAR 24-EDIP

DS12C887+

Real-Time Clock

GeneralDescription TheDS12885,DS12887,andDS12C887real-timeclocks(RTCs)aredesignedtobedirectreplacementsfortheDS1285andDS1287.Thedevicesprovideareal-timeclock/calendar,onetime-of-dayalarm,threemaskableinterruptswithacommoninterruptoutput,aprogrammablesquarew

DS12C887A

Real-Time Clock

GeneralDescription TheDS12885,DS12887,andDS12C887real-timeclocks(RTCs)aredesignedtobedirectreplacementsfortheDS1285andDS1287.Thedevicesprovideareal-timeclock/calendar,onetime-of-dayalarm,threemaskableinterruptswithacommoninterruptoutput,aprogrammablesquarew

DS12C887A+

Real-Time Clock

GeneralDescription TheDS12885,DS12887,andDS12C887real-timeclocks(RTCs)aredesignedtobedirectreplacementsfortheDS1285andDS1287.Thedevicesprovideareal-timeclock/calendar,onetime-of-dayalarm,threemaskableinterruptswithacommoninterruptoutput,aprogrammablesquarew