紅外遙控汽車設計外文翻譯

1、DQBS-13延陵學院屆畢業(yè)設計外文閱讀與翻譯畢業(yè)設計題目 外文中文題目 外文英文題目 原文 出處 百度文庫 專業(yè) 姓名班級 學號 職稱指導教師中文翻譯紅外遙控及芯片介紹人的眼睛能看到的可見光按波長從長到短排列，依次為紅、橙、黃、綠、青、藍、紫。其中紅光的波長范圍為0.620.76m；紫光的波長范圍為0.380.46m。比紫光波長還短的光叫紫外線，比紅光波長還長的光叫紅外線。紅外線遙控就是利用波長為0.761.5m之間的近紅外線來傳送控制信號的。常用的紅外遙控系統(tǒng)一般分發(fā)射和接收兩個部分。發(fā)射部分的主要元件為紅外發(fā)光二極管。它實際上是一只特殊的發(fā)光二極管，由于其內(nèi)部材料不同于普通發(fā)光二極管，因

2、而在其兩端施加一定電壓時，它便發(fā)出的是紅外線而不是可見光。目前大量使用的紅外發(fā)光二極管發(fā)出的紅外線波長為940nm左右，外形與普通 5發(fā)光二極管相同，只是顏色不同。紅外發(fā)光二極管一般有黑色、深藍、透明三種顏色。判斷紅外發(fā)光二極管好壞的辦法與判斷普通二極管一樣：用萬用表電阻擋量一下紅外發(fā)光二極管的正、反向電阻即可。紅外發(fā)光二極管的發(fā)光效率要用專門的儀器才能精確測定，而業(yè)余條件下只能用拉距法來粗略判定。 接收部分的紅外接收管是一種光敏二極管。在實際應用中要給紅外接收二極管加反向偏壓，它才能正常工作，亦即紅外接收二極管在電路中應用時是反向運用，這樣才能獲得較高的靈敏度。紅外接收二極管一般有圓形和方形

3、兩種。由于紅外發(fā)光二極管的發(fā)射功率一般都較?。?00mW左右），所以紅外接收二極管接收到的信號比較微弱，因此就要增加高增益放大電路。前些年常用PC1373H、CX20106A等紅外接收專用放大電路。最近幾年不論是業(yè)余制作還是正式產(chǎn)品，大多都采用成品紅外接收頭。成品紅外接收頭的封裝大致有兩種：一種采用鐵皮屏蔽；一種是塑料封裝。均有三只引腳，即電源正（VDD）、電源負（GND）和數(shù)據(jù)輸出（VO或OUT）。紅外接收頭的引腳排列因型號不同而不盡相同，可參考廠家的使用說明。成品紅外接收頭的優(yōu)點是不需要復雜的調(diào)試和外殼屏蔽，使用起來如同一只三極管，非常方便。但在使用時注意成品紅外接收頭的載波頻率。紅外遙控

4、常用的載波頻率為38kHz，這是由發(fā)射端所使用的455kHz陶振來決定的。在發(fā)射端要對晶振進行整數(shù)分頻，分頻系數(shù)一般取12，所以455kHz÷1237.9 kHz38kHz。也有一些遙控系統(tǒng)采用36kHz、40kHz、56kHz等，一般由發(fā)射端晶振的振蕩頻率來決定。紅外遙控的特點是不影響周邊環(huán)境、不干擾其它電器設備。由于其無法穿透墻壁，故不同房間的家用電器可使用通用的遙控器而不會產(chǎn)生相互干擾；電路調(diào)試簡單，只要按給定電路連接無誤，一般不需任何調(diào)試即可投入工作；編解碼容易，可進行多路遙控。由于各生產(chǎn)廠家生產(chǎn)了大量紅外遙控專用集成電路，需要時按圖索驥即可。因此，現(xiàn)在紅外遙控在家用電器、室

5、內(nèi)近距離（小于10米）遙控中得到了廣泛的應用。多路控制的紅外遙控系統(tǒng) 多路控制的紅外發(fā)射部分一般有許多按鍵，代表不同的1控制功能。當發(fā)射端按下某一按鍵時，相應地在接收端有不同的輸出狀態(tài)。接收端的輸出狀態(tài)大致可分為脈沖、電平、自鎖、互鎖、數(shù)據(jù)五種形式?！懊}沖”輸出是當按發(fā)射端按鍵時，接收端對應輸出端輸出一個“有效脈沖”，寬度一般在100ms左右?！半娖健陛敵鍪侵赴l(fā)射端按下鍵時，接收端對應輸出端輸出“有效電平”，發(fā)射端松開鍵時，接收端“有效電平”消失。此處的“有效脈沖”和“有效電平”，可能是高、也可能是低，取決于相應輸出腳的靜態(tài)狀況，如靜態(tài)時為低，則“高”為有效；如靜態(tài)時為高，則“低”為有效。大多

6、數(shù)情況下“高”為有效?！白枣i”輸出是指發(fā)射端每按一次某一個鍵，接收端對應輸出端改變一次狀態(tài)，即原來為高電平變?yōu)榈碗娖?，原來為低電平變?yōu)楦唠娖?。此種輸出適合用作電源開關、靜音控制等。有時亦稱這種輸出形式為“反相”?！盎ユi”輸出是指多個輸出互相清除，在同一時間內(nèi)只有一個輸出有效。電視機的選臺就屬此種情況，其它如調(diào)光、調(diào)速、音響的輸入選擇等?！皵?shù)據(jù)”輸出是指把一些發(fā)射鍵編上號碼，利用接收端的幾個輸出形成一個二進制數(shù)，來代表不同的按鍵輸入。一般情況下，接收端除了幾位數(shù)據(jù)輸出外，還應有一位“數(shù)據(jù)有效”輸出端，以便后級適時地來取數(shù)據(jù)。這種輸出形式一般用于與單片機或微機接口。 除以上輸出形式外，還有“鎖存”

7、和“暫存”兩種形式。所謂“鎖存”輸出是指對發(fā)射端每次發(fā)的信號，接收端對應輸出予以“儲存”，直至收到新的信號為止；“暫存”輸出與上述介紹的“電平”輸出類似。影響遙控器遙控距離（Remote distance of RF Remote Control）的因素主要有如下幾點：1、發(fā)射功率：發(fā)射功率大則距離遠，但耗電大，容易產(chǎn)生干擾；2、接收靈敏度：接收器的接收靈敏度提高，遙控距離增大，但容易受干擾造成誤動或失控；3、天線：采用直線型天線，并且相互平行，遙控距離遠，但占據(jù)空間大，在使用中把天線拉長、拉直可增加遙控距離；4、高度：天線越高，遙控距離越遠，但受客觀條件限制；5、阻擋：目前使用的無線遙控器使

8、用國家規(guī)定的UHF頻段，其傳播特性和光近似，直線傳播，繞射較小，發(fā)射器和接收器之間如有墻壁阻擋將大大打折遙控距離，如果是鋼筋混泥土的墻壁，由于導體對電波的吸收作用，影響更甚?？紤]到本次設計的硬件體積應偏小以便嵌入遙控器中，因此我們選擇了20個引腳的單片機芯片AT89C2051。下面即介紹此芯片的功能。1). AT89C2051的內(nèi)部結(jié)構(gòu)及性能AT89C2051是一帶有2K字節(jié)閃速可編程可擦除只讀存儲體(EEPROM)的低電壓,高性能8位CMOS微型計算機。它采用ATMEL的高密非易失存儲技術制造并和工業(yè)標準MCS51指令集和引腳結(jié)構(gòu)兼容。通過在單塊芯片上組合通用的CPL1和閃速存儲2器,ATM

9、EL AT89C2051是一強勁的微型計算機,它對許多嵌入式控制應用提供一高度靈活和成本低的解決辦法。AT89C2051是與8051兼容的CHMOS微控制器，其Flash存儲器容量為2KB。與CHMOS工藝的80C51一樣，具有空閑和掉電兩種節(jié)電運行方式。其性能如下：8位CUP；2KB的Flash存儲器；工作電壓范圍2.76V；128KB的數(shù)據(jù)存儲器；全靜態(tài)工作方式：024MHz；15根輸入/輸出線；一個可編程串行口；2個16位定時/計數(shù)器； 有片內(nèi)精密模擬比較器；5個中斷源，2個優(yōu)先級?？删幊檀蠻ART通道；直接LED驅(qū)動輸出；AT89C2051的內(nèi)部結(jié)構(gòu)如圖1所示。2). AT89C20

10、51的芯片引腳及功能為適應智能儀表的嵌入要求，AT89C2051在芯片的引腳配置上進行了簡化，主要變化為：（1）引腳由40根減為20根；（2）增加了一個模擬比較器。3AT89C2051的引腳圖如圖b所示。AT89C2051引腳功能：1. Vcc：電源電壓。2. GND：地。3. P1口：P1口是一8位雙向I/O口?？谝_P1.2P1.7提供內(nèi)部上拉電阻。 P1.0和P1.1要求外部上拉電阻。P1.0和P1.1還分別作為片內(nèi)精密模擬比較器的同相輸入(AIN0)和反相輸入（AIN1)。P1口輸出緩沖器可吸收20mA電流并能直接驅(qū)動LED顯示。當P1口引腳寫入“1”時,其可用作輸入端。當引腳P1.2

11、P1.7用作輸入并被外部拉低時,它們將因內(nèi)部的上拉電阻而流出電流(IIL)。P1口還在閃速編程和程序校驗期間接收代碼數(shù)據(jù)。4. P3口：P3口的P3.0P3.5、P3.7是帶有內(nèi)部上拉電阻的七個雙向I/0引腳。P3.6用于固定輸入片內(nèi)比較器的輸出信號并且它作為一通用 I/O引腳而不可訪問。P3口緩沖器可吸收20mA電流。當P3口引腳寫入“1”時,它們被內(nèi)部上拉電阻拉高并可用作輸入端。用作輸入時,被外部拉低的 P3口引腳將用上拉電阻而流出電流(IIL)。P3口還用于實現(xiàn)AT89C2051的各種功能,如下表1所示。 P3口還接收一些用于閃速存儲器編程和程序校驗的控制信號。45. RST：復位輸入。

12、RST一旦變成高電平,所有的I/O引腳就復位到“1”。當振蕩器正在運行時,持續(xù)給出RST引腳兩個機器周期的高電平便可完成復位。每一個機器周期需12個振蕩器或時鐘周期。6. XTAL1：作為振蕩器反相放大器的輸入和內(nèi)部時鐘發(fā)生器的輸入。 7. XTAL2：作為振蕩器反相放大器的輸出。P3口的功能如表1所示。3). AT89C2051的軟硬件約束AT89C2051單片機由于引腳的限制，沒有設置外部存儲器的接口，所以，對于外部存儲器的讀/寫指令如MOVX等不起作用。由于ROM空間為2KB，所以，對于跳轉(zhuǎn)指令要注意轉(zhuǎn)移的目的地址范圍（000H7FFH）,超出地址范圍時，將產(chǎn)生不可遇見的錯誤結(jié)果。數(shù)據(jù)存

13、儲的范圍是（00H7FH），堆棧操作時亦應加以注意。模擬比較器的輸入信號經(jīng)原來的P3.6引腳引入到單片機內(nèi)，所以原來的P3.6腳已 無法再外部使用。模擬比較器可以方便的比較兩個模擬電壓的大小，若外接一個D/A轉(zhuǎn)換器并將其輸出作為模擬比較器的一個輸入，而由模擬比較器的另一個輸入端引入被測電壓，通過軟件的方法也可以實現(xiàn)A/D轉(zhuǎn)換。 4). AT89C2051的Flash存儲器編程AT89C2051單片機提供有2KB的片內(nèi)Flash程序存儲器，它允許在線修改或使用專用編程器編程。aFlash存儲器加密位AT89C2051單片機有2個加密位，可以編程（P）或不編程（U）以獲得不同的加密功能。5加密功能

14、表如表4.1-1所示。加密位內(nèi)容的擦除只能通過片擦除操作來完成。bFlash存儲器的編程和程序校驗（1）AT89C2051單片機的片內(nèi)Flash存儲器編程模式如表4.1-2所示注：內(nèi)部EPROM的計數(shù)器在RESET的上升沿復位到000H，并由XTAL1，引腳正 脈沖執(zhí)行計數(shù)；片擦除需要10ms的PROG脈沖；編程期間P3.1被拉低來指示RDY/BSY.c.AT89C2051單片機的片內(nèi)Flash存儲器編程步驟如下：上電次序是在VCC、GND引腳加工作電壓，RESET、XTAL1引腳接到GND,懸浮其它引腳，等待大于10ms以上時間；在RESET、P3.2引腳加高電平；在P3.3、P3.4、P3

15、.5、P3.7引腳加模式電平； 經(jīng)P1.0P1.7對000H單元加入數(shù)據(jù)字節(jié)； 升高RESET到12V激活編程；使P3.2跳變一次，編程一個字節(jié)或加密位；6校驗已被編程數(shù)據(jù)，使RESET從12V降到邏輯電平“H”并設置P3.3P3.7為正確的電平，可以在P1口輸出數(shù)據(jù)；進行下一地址單元的字節(jié)編程，在XTAL1加一脈沖，使地址計數(shù)器加1，在P1口加入編程數(shù)據(jù)。重復步驟，完成整個2KB的編程。下電次序為：設置XTAL1、RESET為“L”,浮空其它I/O引腳，關閉VCC電源。(3)編程及校驗電路如圖c、d所示。說明幾點：（1）編程期間P3.1被拉低來指示RDY/BSY； （2）單片擦除需要10ms

16、的PROG；（3）內(nèi)部EEPROM地址計數(shù)器在RESET的上升沿復位到000H，并由XTAL1引腳正脈沖執(zhí)行計數(shù)。隨著科學技術的迅速發(fā)展,人類社會發(fā)生了翻天覆地的變化。使我們的生產(chǎn)生活更加豐富多彩。在這些變化中,遙控技術已經(jīng)廣泛地滲透到電視、航天、軍事、體育等生產(chǎn)、生活各方面。從最廣泛的意義上來說,一切裝有電動運轉(zhuǎn)設備或電氣開關的場所,如果感覺有某種必要,都可考慮加裝遙控設備來改善現(xiàn)有定點開關的操作,即用遙控器的操作來實現(xiàn)原有設備的開、停、變向、變速等功能。目前，人們使用的開關大多是手動操作控制，十分不便。很多人都有這樣的想法：躺在床上不愿去關燈，坐在沙發(fā)上不愿意起來切換燈開光等：此課題的創(chuàng)新

17、性就在于使用遙控的方式來實現(xiàn)燈的關閉，滿足人的需求，目前市場還沒有出現(xiàn)這個產(chǎn)品，很有競爭力。另據(jù)了解，目前很多產(chǎn)品，遙控器是可以互換的，也就是說，只需要開發(fā)出接收部分，發(fā)射部分則可公用，即可獲得另一創(chuàng)新性：使用一個遙控開關控制所有的燈開關，比如可以使用遙控電風扇的開關來控制燈的開關；為此我們設計了紅外遙控系統(tǒng)來實現(xiàn)對手動開關量的控制。紅外遙控的特點是不影響周邊環(huán)境、不干擾其它7電器設備。由于其無法穿透墻壁，故不同房間的家用電器可使用通用的遙控器而不會產(chǎn)生相互干擾；電路調(diào)試簡單，只要按給定電路連接無誤，一般不需任何調(diào)試即可投入工作；編解碼容易，可進行多路遙控。8外文資料Infrared Remo

18、te And Chips Are IntroducedPeople's eyes can see the visible wavelength from long to short according to the arrangement, in order to red, orange, yellow, green, green, blue, violet. One of the red wavelengths for 0.62 0.76 muon m, Purple is 0.38 wavelength range muon m. Purple is shorter than th

19、e wavelength of light called ultraviolet ray, red wavelengths of light is longer than that of infrared light. Infrared remote control is to use wavelength for 0.76 1.5 muon m between the near infrared to transfer control signal.Commonly used infrared remote control system of general points transmit

20、and receive two parts. The main component part for the launch of infrared light emitting diode. It is actually a special light emitting diode, due to its internal material differs from ordinary light emitting diode, resulting in its ends on certain voltage, it is a rather infrared light. Use of infr

21、ared light emitting diode the infrared wavelengths, for 940nm appearance and ordinary, just the same light emitting diode five different colors. Infrared light emitting diode generally have black and blue, transparent three colors. Judgement of infrared light emitting diode and judgment method, usin

22、g a multimeter to ordinary diode electric block measure of infrared light emitting diode, reverse resistance. The infrared light emitting diode luminescence efficiency to use special instrument to measure precise, and use only spare conditions to pull away from roughly judgement. Receiving part of i

23、nfrared receiving tube is a photosensitive diode.In actual application of ir receiving diode to reverse bias, it can work normally, i.e., the infrared receiving circuit application in diode is used to reverse, higher sensitivity. Infrared receiving diode usually have two round and rectangular. Due t

24、o the power of infrared light emitting diode (or less commonly 100mW), so ir receiving diode received signals is weak, so will increase high-gain ones.the amplifier circuit.In common CX20106A, etc PC1373H muon infrared receiving special amplifier circuit. In recent years both amateur or formal produ

25、cts, mostly using infrared receiving head finished. The head of infrared receiving product packages generally has two kinds: one kind USES sheet shielding, A kind of plastic packaging. There are three pin, namely the power is (VDD), power negative (GND) and data output (VO or OUT). Infrared receivin

26、g head foot arrangement for types varied, manufacturer's instructions. Finished the advantages of infrared receiving head is not in need of sophisticated debugging and shell screen, use rise as a transistor, very convenient. But when used in the infrared receiving attention finished first carrie

27、r frequency.9Infrared remote common carrier frequency for 38kHz, this is transmitted by using 455kHz TaoZhen to decide. At the launch of crystals were integer frequency, frequency coefficients, so commonly 12, so 455kHz ÷ 12 hundredth kHz 38kHz hundredth 379,000. Some remote control system adop

28、ts 36kHz, 56kHz, etc, general 40kHz launched by the crystals of oscillation frequency to decide.Infrared remote characteristic is not influence the surrounding environment and does not interfere with other electric equipment. Due to its cannot penetrate walls, so the room can use common household ap

29、pliance of remote control without mutual interference, Circuit testing is simple, as long as given circuit connection, generally does not need any commissioning can work, Decoding easily, can undertake multiple remote control. Because each manufacturer produces a great deal of infrared remote applic

30、ation-specific integrated circuit, when need press diagram suo ji. Therefore, the infrared remote now in household appliances, indoor close (less than 10 meters) in the remote control is widely usedMultiple infrared remote control system of infrared emission control buttons, there are many parts gen

31、eral representative of different control function. When pressed a button, correspondingly in the receiver with different output.Receiving the output state can be roughly divided into pulse, level, self-locking and interlock, data five forms. "The pulse output is according to launch" when t

32、he button, the receiver output terminals output corresponding "effective", a pulse width 100ms in general. "Level" refers to the output launch press button, the receiver output corresponding output level ", "effective transmit to loosen the receiver" level "di

33、sappears.This "effective pulse" and "effective", may be of high level is low, and may also depend on the output corresponding static state, such as feet for low, static "high" for effective, As for the static, "low" high effective. In most cases, "high&qu

34、ot; for effective. "Since the lock" refers to launch the output of each time you press the button, a receiver output corresponding change, namely originally a state for high level into a low level, originally for low level into high level. The output power switch and mute as control etc. S

35、ometimes also called the output form for "invert". "The interlock" refers to multiple outputs each output, at the same time only one output. The TV sets of this case is selected, the other is like the light and sound input speed, etc."Data" refers to launch the output s

36、ome key, use a few output form a binary number, to represent different keystroke.Normally, the receiver except a few data output, but also a "valid" output data, so the timely to collect data. This output form with single-chip microcomputer or are commonly used interface. In addition to th

37、e above output form outside, still have a "latch" and "temporary10" two forms. The so-called "latch" refers to launch the output signal of each hair, the receiver output corresponding ", "new store until you receive signals. "Temporary" output and th

38、e introduction of "level" output is similar.Remote distance (Remote Control effect of RF Remote Control distance) are the major factors as follows:1, launched in power transmission power: while distance, but great power consumption, easy to generate interference,2 and receiving the receive

39、r sensitivity, receiving, remote distance increased sensitivity to improve, but easy to cause disturbance maloperation or abuse,3, antenna, using linear antenna, and parallel, remote distance, but occupies a large space, in use the antenna spin, pull can increase the remote distance,4 and the higher

40、 height: antenna, remote farther, but by objective conditions, 5 and stop: current use of wireless remote use of UHF band stipulated by the state, the propagation characteristics of approximate linear transmission, light, small, transmitters and receivers diffraction between such as walls are blocki

41、ng will greatly discounted remote distance, if is reinforced concrete walls, due to the absorption effect conductor, radio waves.Considering the design of hardware volume small to be embedded in the remote control, so we chose 20 foot single-chip chip AT89C2051. Below is the introduction of the func

42、tion.1) AT89C2051 internal structure and performanceAT89C2051 is a byte flash 2K with programmable read-only memory can be erased EEPROM (low voltage, high performance of eight CMOS microcomputer. It adopts ATMEL of high-density non-volatile storage technology manufacturing and industrial standard M

43、CS - 51 instruction set and lead. Through the combination of single chip in general CPL1 and flash memory, is a strong ATMEL AT89C2051 microcomputer, its application in many embedded control provides a highly flexible and low cost solutions. The compatible with 8051 AT89C2051 is CHMOS micro controll

44、er, the Flash memory capacity for 2KB. And CHMOS 80C51 process, have two kinds of leisure and power saving operation mode.The performance is as follows:8 CUP, 2KB Flash memory,Working voltage range 2.7-6V, 128KB data storage, The static working way: 0-24MHz, 15 root input/output line, A programmable

45、 serial, 2 a 16-bit timing/counters.11There is a slice of inside precision simulation comparator, 5 the interrupt sources, 2 priority.Programmable serial UART channel, Directly LED driver output,The internal structure of AT89C2051 is shown in figure 1.2) AT89C2051 chip pin and functionIn order to ad

46、apt to the requirement of intelligent instrument, embedded in the chip foot AT89C2051 simplified configuration，The major changes to:(1) the lead foot from 20 to 40 wires,(2) increased a simulated comparator.12as shown in figure b.AT89C2051 pin function: 1 the Vcc: voltage. 2: to GND.3 P1 mouth: P1 m

47、outh is an 8-bit two-way I/O port. P1.2 P1.7 mouth pin the internal resistance provides. P1.0 and P1.1 requirements on the external pull-up resistors. P1.0 and P1.1 also separately as piece inside precision simulation comparator with input (AIN0) and reversed-phase input (AIN1). Output buffer can ab

48、sorb the P1 mouth 20mA current and can directly LED display driver. When P1 mouth pin into a "1", can make its input. When the pin P1.2 P1.7 as input and external down, they will be for the internal resistance and flow current (IIL). In flash P1 mouth during the procedure and program code

49、data receiving calibration.4 P3: the P3.0 P3.5 P3, P3.7 is the internal resistance with seven two-way I / 0 lead. P3.6 for fixed inputs piece inside the comparator output signal and it as a general I/O foot and inaccessible. P3 mouth buffer can absorb 20mA current. When P3 mouth pin into "1&quo

50、t;, they are the internal resistance can push and input. As input, and the low external P3 mouth pin pull-up resistors and will use current (IIL) outflow. P3 mouth still used to implement the various functions, such as AT89C2051 shown in table 1. P3 mouth still receive some for flash memory programm

51、ing and calibration of program control signals.5 RST: reset input. RST once, all into high level I/O foot will reset to "1". When the os13cillator is running, continuous gives RST pin two machine cycle of high level can finish reset. Each machine cycle to 12 oscillator or clock cycle.6 XTA

52、L1: as the oscillator amplifier input and inverse internal clock generator input.7. XTAL2: as the oscillator reversed-phase the amplifier's output. P3 mouth function asis shown in table 1.3) the software and hardware constraints. AT89C2051Due to the foot of the chip AT89C2051, no set limits of e

53、xternal storage interface, so, for external memory read/write instructions as MOVX etc.Due to 2KB ROM, so, the space to jump instruction should pay attention to the destination address range (transfer 000H - 7FFH), beyond the range of addresses, will not meet wrong results. The scope of data storage

54、 is 00H (7FH - when stack manipulation), also should be noticed.The input signal is simulated by the original P3.6 foot into the microcontroller, so the original P3.6 footUnable to external use. Simulation comparator can compare two simulation, if the size of the voltage external A D/A converter and

55、 its output as A comparator analog input, and by simulating the comparator another input voltage to be measured, through the introduction of the software method can realize the A/D conversion.4 the Flash memory AT89C2051)Provide a 2KB of single-chip AT89C2051 in Flash memory chips, which allows the

56、online program to modify or use special programming programming.A）. Flash memory encryptionAT89C2051 SCM has 2 encryption, can programming (P) or programming (U) to obtain different encryption functionality.14Encryption functionality table as shown in table 1-1.RESET to XTAL1 by foot is executed, pu

57、lse count, (2) pieces of 10ms to erase PROG pulse,(3 )during the programming P3.1 pulled low RDY/BSY instructions.C).A T89C2051 SCM in Flash memory chips programming steps are as follows:1. in the sequence is the VCC GND pin, add working voltage, XTAL1 pin RESET, receiving GND pin, other than the above time, waiting for 10ms,2. In P3.2 pin RESET, heightening level,3. In P3.3, P3.4, P3.5, P3.7 pin; add model multilevel4. P1.0 P1.7 - for the 000H unit add data bytes,5. RESET to increase the 12V activation programming,6. P3.2 jump to a one byte programming or encryption,7. calibratio