外文翻譯---單片機概述-預覽頁

　

【正文】 to the production simulator 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 pany 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 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 reshuffle of the situation. HOOKS simulator technology is no doubt W78958 manufacturers after the loss of alternatives, but the absence of longterm followup and attention, not the short term the majority of manufacturers of plex HOOKS mature technology products. Experts believe that the overall simulator manufacturers in transition may need 23 years of the cycle, and there is considerable simulator manufacturers will be eliminated, the market will have mainly concentrated in a few simulator manufacturers. Second, the development trend of singlechip It can be said now is a singlechip opinions of the period, the world39。s PIC and reduced instruction set (RISC) has a strong development momentum of China Taiwan HOLTEK singlechip panies in recent years, increasing production, with its high quality lowcost advantages, to occupy a certain market share. MOTOROLA addition to the pany39。 Motorola39。s MC68HC08MR16, MR24 and so on. In these singlechip, the pulse width modulation circuit 6channel output, can produce threephase PWM AC voltage, and internal control with deadzone function. 2, power consumption, packaging and power supply voltage of the progress Now the new singlechip power consumption is getting smaller and smaller, especially the many singlechip are a variety of work settings, which include waiting, suspended, sleep, idle, powersaving mode and so on. P87LPC762 singlechip pany Philips is a very typical example, in idle, the power consumption is mA, while in powersaving mode, the power consumption is only . In the most amazing power is TI39。s family of operating voltage is as low as 39。(2) 80年代末期90年代末期這個時期主要使用華邦一顆帶有仿真功能的芯片制作，采用的技術叫做Bondout。相反國外的仿真器較早地使用了HOOKS技術，在初期由于HOOKS技術本身的復雜性，仿真性能和價格不如國內采用Bondout的仿真器。W78958停產以后，國內仿真器廠商處于一個非常尷尬的局面。專家們認為仿真器廠家的整體轉型可能需要2－3年的周期，并且有相當的仿真器廠家將會被淘汰，市場擁有量將主要集中在少數幾個仿真器廠家。CMOS雖然功耗較低，但由于其物理特征決定其工作速度不夠高，而CHMOS則具備了高速和低功耗的特點，這些特征，更適合于在要求低功耗象電池供電的應用場合?，F在的許多單片機都具有多種封裝形式，其中SMD(表面封裝)越來越受歡迎，使得由單片機構成的系統正朝微型化方向發展。此外還有MOTOROLA公司的產品，日本幾大公司的專用單片機。在目前，用戶對單片機的需要越來越多，但是，要求也越來越高。例如，Infineon公司的C 505C，C515C，C167CR，C167CS32FM，81C90；Motorola公司的68HC08AZ 系列等。 為了能在變頻控制中方便使用單片機，形成最具經濟效益的嵌入式控制系統。Philips公司的單片機P87LPC762是一個很典型的例子，在空閑時， mA，而在節電方式中。在LPM3 時，振蕩器處于32kHz，?A。這是PIC12CXXX系列。而一些廠家，～6V的條件下工作的單片機。 四、以單片機為核心的嵌入式系統單片機的另外一個名稱就是嵌入式微控制器，原因在于它可以嵌入到任何微型或小型儀器或設備中。要實現嵌入式設備和Internet連接，就需要把傳統的Internet理論和嵌入式設備的實踐都顛倒過來。 EmWare公司提出嵌入式系統入網的方案EMIT技術。 如果嵌入式設備的資源足夠，則emMicro和emGateway可以同時裝入嵌入式設備中，實現Internet的直接接