外文資料翻譯--單片機(jī)的休眠運(yùn)算復(fù)位和抗干擾能力完善-單片機(jī)(完整版)
【正文】 電平則一些引腳是連接電容后接地。 在日常生活中減少周期和復(fù)位的用電量 復(fù)位信號(hào)在高層次的 TR 和單片機(jī)是在程序不運(yùn)行時(shí)抗干擾能力是最強(qiáng)的，之后高層次的單片機(jī)開始進(jìn)行執(zhí)行程序。在某些場(chǎng)合，時(shí)間的休眠會(huì)很長(zhǎng)，但更有效的提高了抗干擾能力。至于唯一的數(shù)據(jù)顯示，雖然有些讀入數(shù)據(jù)在 1秒內(nèi)出現(xiàn)錯(cuò)誤但對(duì)下次測(cè)量沒有影響或可以承受的都屬于可忽略的錯(cuò)誤。 1 原理和實(shí)施方法 無條件定期復(fù)位 使用定時(shí)器，專用時(shí)鐘芯片或其它脈沖發(fā)生器在某一部分定期產(chǎn)生復(fù)位信號(hào)。智能維護(hù)邏輯控制電路取代了以往的測(cè)量電路的數(shù)字邏輯控制電路，并將其發(fā)展。這 種 操作被擴(kuò)展到更大的范圍，并得到廣泛使用 。這種方法尤其適合于測(cè)量?jī)x器。這種復(fù)位的好處是狗的電路在定期控制著。 2 硬件的具體主要點(diǎn) 定期無條件復(fù)位 一般有兩種方法：①使用定時(shí)器或特殊用途的時(shí)鐘芯片來復(fù)位或使用由 555 電路組成的時(shí)鐘電路可以使用時(shí)鐘 芯片的又 X1126等設(shè)立預(yù)警時(shí)間后通過報(bào)警信號(hào)喚醒 CPU。這就是說，復(fù)位也適合在這一段程序的低層次TD 信號(hào)進(jìn)行，這個(gè)時(shí)候時(shí)間應(yīng)該大于執(zhí)行周期的每個(gè)程序時(shí)間。給系統(tǒng)設(shè)置一個(gè)復(fù)位按鈕，那就是說一個(gè)共同的復(fù)位，此按鈕是不是加入復(fù)位，要看最后并聯(lián)在電容兩端的引腳接地情況。s circuit etc, can make this problem have better settlement, but still the existing problem: (1)Guard the gate dog at the movement, mean and appear mistake already and run some time, this is not allowed in some occasions。 For writing down the instrument of the biggest or minimum, can use the window parator. In order to realize the electrification that is regulated, can use the electronic electric potential device, establish upper and lower limits with the order of the onechip puter. Reduce cycle and restored to the throne the high electricity at ordinary times In Fig3, restored to the throne the signal during high level Tr, the onechip puter is in the state of restoring to the throne, the procedure does not run, antiinterference ability is the strongest。 otherwise, it can39。 (3) In measure and control cycle among the long system, onechip puter spend wait for the peripheral hardware a large amount of time, will be interfered too when carry out and wait for the order. To these situations, we have tried the method restored to the throne voluntarily in practice, alternate pulse of adopting etc or restore to the throne waking according to external terms to the onechip puter up. After being restored to the throne each time, the onechip puter carries out the corresponding procedure, enters dormancy in time after finishing carrying out the task, wait to be restored to the throne neatly. Have solved abovementioned problems well with this method, and has got better result in the agricultural voltage transformer prehensive protector experiment. Now take 51 serial onechip puters as an example and probe into the concrete principle and implementation method, restored to the throne the signal as the high level. 1 A principle and implementation method Unconditional regular reset Use timer, special clock chip or other pulse generator in a certain part of the regular produce reset signal. This method is especially suited for measuring instrument。 這是因?yàn)閱纹瑱C(jī)程序運(yùn)行的特殊性所導(dǎo)致的。以簡(jiǎn)單的顯示工具來確定復(fù)位周期數(shù)據(jù)打破原周期，低電平就是它的措施，有時(shí)其會(huì)超過平常任何時(shí)候所表現(xiàn)出來的數(shù)據(jù)，否則目前完整執(zhí)行計(jì)劃永遠(yuǎn)是錯(cuò)的。 5
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