单片机的发展毕业论文外文翻译Word文件下载.docx

1、（1） the late 70s in the mid -80 The technology during this period was mainly the development of simulation systems, now is not high technology, the user request is not high. （2） the late 80s during the late -90 The main use of this period with an emulation function Winbond chip production, the techn

2、ology is called Bondout. Using this chip to greatly simplify the design of emulator, so the standard of domestic emulator with a large increase can be largely occupied by the user resources. Simulation performance is due to the increase in domestic production in the emulator nearly 10 years no progr

3、ess has been produced using this model. Although individual companies have also tried other techniques to improve the simulation of the standard, for example, HOOKS technology, but because of their technical limitations did not succeed. Instead abroad earlier simulator technology used HOOKS, HOOKS a

4、t the initial stage due to the complexity of the technology itself, simulation performance and price as the domestic use of the simulator Bondout. With the development of IC technology, the domestic production HOOKS technology is ripe, but several major domestic manufacturers also Bondout technologi

5、es intoxicated. （3）After 2000 year China in 2000 emulator period changes in the market, the largest, the most striking change is the Winbond W78958 chip simulation of the production. Winbond W78958 chip during the design stage, the internal functions of the simulation only to the production simulato

6、r to simulator manufacturers in order to better promote the W78958. After several years of change, however, W78958 simulator evolved into the use of a simulation of the ASIC rather than using the standard chip, the scope of use is limited to domestic and 20,000 a year less than the amount the compan

7、y also contributed to the Winbond After entering in 2002 announced that it would stop production of the chip. W78958 production, the domestic manufacturers simulator in a very embarrassing situation. W78958 use at home as a result of nearly 10 years, the domestic user base is very large, these users

8、 will not be able to receive continued support, especially maintenance. In addition, the domestic focus in the W78958 on the technical work done can not be renewed and improved, many people in the industry that the industry will face a simulator to set up or re-shuffle of the situation. HOOKS simula

9、tor technology is no doubt W78958 manufacturers after the loss of alternatives, but the absence of long-term follow-up and attention, not the short term the majority of manufacturers of complex HOOKS mature technology products. Experts believe that the overall simulator manufacturers in transition m

10、ay need 2-3 years of the cycle, and there is considerable simulator manufacturers will be eliminated, the market will have mainly concentrated in a few simulator manufacturers. Chip manufacturers as more and more resources getting stronger and stronger, with chip to chip compatible simulation simula

11、tion model, there is incomplete coverage of resources （such as additional ports, additional external interrupt）, address different distribution （such as the P4 I ）, to operate in different ways （such as EXTRAM, WTD） and other shortcomings. Simulation with a dedicated chip to chip or Philips simulati

12、on of more than 20 manufacturers more than 400 kinds of chips, the first simulation required more and more, so theres a new generation of simulator technology. But a new generation of patented technology makes the simulator there is no economic power can not afford to buy the beginners. Second, the

13、development trend of single-chip It can be said now is a single-chip opinions of the period, the worlds major chip manufacturing companies have introduced their own single-chip, from the 8, 16-32, just to name a few, everything, it is compatible with mainstream C51 series of , there are not compatib

14、le, but they own each other into each other, for SCM applications world wide. Throughout the development process of single-chip, you can indicate the development trend of single-chip, generally are:1. Low-power CMOS technology MCS-51 series of 8031 introduced the power consumption of 630mW, and now

15、widespread in the single-chip 100mW or so, with the growing demand for low-power single-chip, and now all the basic single-chip manufacturers are use of CMOS （complementary metal oxide semiconductor process）. As the 80C51 on the use of HMOS （high density metal oxide semiconductor process） and CHMOS

16、（high-density complementary metal oxide semiconductor process）. Although the CMOS low power consumption, but because of its physical characteristics to determine its speed is not high enough, and then CHMOS with high-speed and low power consumption characteristics of these features, it is more suita

17、ble in low power consumption, as battery-powered applications . Therefore, the process for some time to come will be the main way to develop single-chip 2. Of micro-chip Now are generally in conventional single-chip will be the central processing unit （CPU）, random access data storage （RAM）, read-on

18、ly program memory （ROM）, parallel and serial communication interface, system interruption, timing circuits, integrated circuit clock in a single chip, enhanced single-chip integration, such as A / D converter, PMW （pulse width modulation circuit）, WDT （watchdog）, and some will be single-chip LCD （LC

19、D） driver integrated circuits are in a single chip, this unit includes single-chip circuits on more and more powerful features. Even single-chip manufacturers can also be tailored in accordance with the requirements of users, to create a single chip with its own chip characteristics. In addition, th

20、e product is now the universal demand of small size, light weight, which requires in addition to powerful single-chip and low power consumption, but also its smaller size. Many now have a variety of single-chip package, which SMD （surface mount） is gaining popularity, making the system constituted b

21、y the single-chip micro-moving in the direction of development. 3. The mainstream and multi-species coexistence Although a wide variety of single-chip, unique, but still single-chip microcomputer 80C51 prevailing at the core, compatible with its structure and command system of PHILIPS products, ATME

22、L companys products and China Taiwans Winbond Series Single machine. Therefore, single-chip microcomputer as the core C8051 occupied the half. Microchips PIC and reduced instruction set （RISC） has a strong development momentum of China Taiwan HOLTEK single-chip companies in recent years, increasing

23、production, with its high quality low-cost advantages, to occupy a certain market share. MOTOROLA addition to the companys products, several large companies in Japans exclusive single-chip microcomputer. A certain period of time, this situation will continue to be upheld, there will not be a single-

24、chip monopoly domination, taking the complementary interdependence, complementarity and common development. Third, the technical development of digital single-chip The number of single-chip technology is reflected in the internal structure, power consumption, as well as the external voltage level on

25、 the manufacturing process. In these areas, more typically describes the number of single-chip level. At the moment, users need more and more single-chip, but getting higher and higher requirements. The following four areas on which the technological progress that the situation of single-chip microc

26、omputer. 1, the internal structure of the progress Single-chip integrated in-house has been an increasing number of parts, these parts include commonly used circuits, such as: timers, comparators, A / D converter, D / A converters, serial communication interface, Watchdog circuit , LCD controller. S

27、ome single-chip control network in order to constitute or form a local network, the internal local area network control module contains the CAN. For example, Infineons C 505C, C515C, C167CR, C167CS-32FM, 81C90; Motorolas 68HC08AZ series. Especially in the C167CS-32FM in single-chip, also contains tw

28、o internal CAN. Therefore, such single-chip networks are very easy to pose. Especially in the control system more complicated, the constitute a very useful control network. In order to facilitate the use of variable frequency control of single-chip, to form the most cost-effective embedded control s

29、ystems. Some set up a special single-chip internal control for variable frequency pulse width modulation control circuit, the single-chip microcomputer has Fujitsus MB89850 series of companies, MB89860 series;s MC68HC08MR16, MR24 and so on. In these single-chip, the pulse width modulation circuit 6-

30、channel output, can produce three-phase PWM AC voltage, and internal control with dead-zone function. Of particular note are: It is now some have adopted the so-called single-chip trinuclear （TrCore） structure. This is a system-level chips built on the （System on a chip） on the structure of the conc

31、ept. This single-chip consists of three core components: a micro-controller and the DSP core, a data and program memory is nuclear and the last one is the external application specific integrated circuit （ASIC）. The most important feature of this single-chip is the DSP and microcontroller at the sam

32、e time do so in a chip. Although the structure definition, DSP is a type of single-chip, but its role is mainly seen in the high-speed computing and special treatment as above, such as fast Fourier transform. It combines traditional single-chip integrated single-chip greatly enhanced functionality. This is the single-chip, one of the grea