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DS12885

Real-Time Clock

DESCRIPTION TheDS12885real-timeclockplusRAMisdesignedtobeadirectreplacementfortheDS1285.TheDS12885isidenticalinform,fit,andfunctiontotheDS1285,andhasanadditional64bytesofgeneralpurposeRAM.AccesstothisadditionalRAMspaceisdeterminedbythelogiclevelpr

DS12885

Real-Time Clock

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

DS12885

實時時鐘; ? 直接替代IBM AT計算機時鐘/日歷\n? RTC計算秒、分、時、星期、日、月、年信息，具有潤年補償，有效期至2099年\n? 用二進制或BCD表示時間\n? 具有AM、PM標示的12小時模式或24小時模式\n? 夏時制選擇\n? 可選擇Intel或Motorola總線時序\n? 接口配合軟件可尋址128 RAM\n? 14字節(jié)時鐘與控制寄存器\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? 鬧鐘可設置為每秒一次至每星期一次\n? 周期可設置在122μs至500ms \n? 時鐘終止刷新周期標志\n? 可編程的方波輸出信號\n? 自動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)級溫度范圍;

DS12885、DS12887和DS12C887實時時鐘(RTC)可用來直接替代DS1285和DS1287。該器件提供一個實時時鐘/日歷、定時鬧鐘、三個可屏蔽中斷(共用一個中斷輸出)、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封裝內集成了晶體和鋰電池。DS12C887在地址32h內增加了世紀字節(jié)。對于少于31天的月份，所有器件的日期能夠在月末自動調整，帶有閏年補償。該器件可配置為24小時或12小時格式，帶AM/PM指示。精確的溫度補償電路用于監(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，在主電源掉電時保持有效的時間和日期。該器件通過一個復用的、字節(jié)寬度接口訪問，支持Intel和Motorola模式。\n\n \n\n

DS12885

Real-Time Clocks

DS12885

Package：24-DIP（0.600"，15.24mm）；包裝：管件 類別：集成電路（IC） 實時時鐘 描述：IC RTC CLK/CALENDAR PAR 24-DIP

DS12885+

Real-Time Clock

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

DS12885N

Real-Time Clock

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

DS12885N

Real-Time Clock

DESCRIPTION TheDS12885real-timeclockplusRAMisdesignedtobeadirectreplacementfortheDS1285.TheDS12885isidenticalinform,fit,andfunctiontotheDS1285,andhasanadditional64bytesofgeneralpurposeRAM.AccesstothisadditionalRAMspaceisdeterminedbythelogiclevelpr

DS12885N+

Real-Time Clock

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

DS12885Q

Real-Time Clock

DESCRIPTION TheDS12885real-timeclockplusRAMisdesignedtobeadirectreplacementfortheDS1285.TheDS12885isidenticalinform,fit,andfunctiontotheDS1285,andhasanadditional64bytesofgeneralpurposeRAM.AccesstothisadditionalRAMspaceisdeterminedbythelogiclevelpr