Microchip Technology Inc.（美國微芯科技公司）宣布，推出全新獨立實時時鐘/日歷（RTCC）器件系列。MCP795WXX/BXX RTCC器件具備10 MHz SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI" title="SPI">SPI接口、非易失性存儲器和比競爭器件性價比更高的有效功能組合。這些新器件可減少元件數(shù)量及成本，適用于智能能源（如恒溫器、電表和商用制冷）、家電（如咖啡機、燃氣灶和微波爐）、汽車（如儀表板控制、汽車收音機和GPS）、消費類電子（如辦公設(shè)備和視頻系統(tǒng)），以及通信市場（如收音機、無繩電話和網(wǎng)絡(luò)系統(tǒng)）等應(yīng)用。
　
　　MCP795WXX/BXX RTCC器件具有毫秒報警功能，以及支持極快速數(shù)據(jù)存取的10 MHz SPI接口，從而能夠?qū)崿F(xiàn)較長的MCU休眠和省電模式，電池耗電量更少。其他低功耗功能還包括僅消耗RTCC器件最小電流的兩個事件檢測輸入，但當(dāng)按下開關(guān)或發(fā)生篡改系統(tǒng)事件時即可喚醒MCU。此外，這些器件作為一個標(biāo)準(zhǔn)產(chǎn)品還包括三種非易失性存儲器：EEPROM、SRAM和一個惟一的ID（訂購時可指定空白或預(yù)編程MAC地址），可進一步減少元件數(shù)量和降低與序列化編程相關(guān)的成本。利用自動電池切換功能提供備用電源，電源故障時間戳可記錄任何電源故障的發(fā)生時間和持續(xù)時長；而且這些器件具有廣泛的數(shù)字微調(diào)范圍，可補償晶振頻率因溫度的漂移，從而能夠在廣泛的溫度范圍內(nèi)實現(xiàn)精確計時。在使用第二個低頻晶振的設(shè)計中，引導(dǎo)時鐘選項可在上電時提供32 kHz的時鐘頻率，無需使用第二個晶振。
　　
　　Microchip存儲器產(chǎn)品部副總裁Randy Drwinga表示：“憑借全新的SPI RTCC器件，Microchip為客戶提供了一個符合其他眾多系統(tǒng)要求的高品質(zhì)計時解決方案。我們充分發(fā)揮Microchip的核心競爭力，以更低成本將有效的功能組合集成在一個器件中，從而成功為客戶帶來這一最新系列。”
　　
開發(fā)工具支持
　　
　　MCP795XX SPI RTCC PICtail™ Plus子板（部件編號AC164147）將于2012年2月開始供貨，屆時可以通過microchipDIRECT（http://www.microchip.com/get/FU5C）訂購。該板可以與Microchip的Explorer 16開發(fā)板（部件編號DM240001）和PIC18 Explorer板（部件編號DM183032）配合使用，能夠幫助設(shè)計人員在其應(yīng)用中演示MCP795WXX/BXX RTCC器件。
　　
封裝與供貨
　　
　　MCP795WXX RTCC器件采用14引腳SOIC和TSSOP封裝，現(xiàn)已供貨。MCP795BXX器件將采用相同的封裝，于12月中旬開始供貨。它們均以10,000片批量訂購。現(xiàn)在可通過http://www.microchip.com/get/9RSL申請樣片，并通過microchipDIRECT（http://www.microchip.com/get/FU5C）進行批量訂購。欲了解更多信息，請聯(lián)絡(luò)Microchip銷售代表或全球授權(quán)分銷商，也可瀏覽Microchip網(wǎng)站http://www.microchip.com/get/321S。欲購買文中提及的產(chǎn)品，可通過microchipDIRECT購買，或聯(lián)絡(luò)任何Microchip授權(quán)分銷伙伴。