51单片机英文及其翻译.doc
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1、英文翻译原文:51 Microcontroller Introduction Microcontrollers basic component is a central processing unit (CPU in the computing device and controller), read-only memory (usually expressed as a ROM), read-write memory (also known as Random Access Memory MRAM is usually expressed as a RAM) , input / output
2、 port (also divided into parallel port and serial port, expressed as I / O port), and so composed. In fact there is also a clock circuit microcontroller, so that during operation and control of the microcontroller, can rhythmic manner. In addition, there are so-called break system, the system is a j
3、anitor role, when the microcontroller control object parameters that need to be intervention to reach a particular state, can after this janitor communicated to the CPU, so that CPU priorities of the external events to take appropriate counter-measures. 整体介绍了单片机的各模块组成(CPU RAM ROM I/O接口)以及各个模块的分工组成Mi
4、crocontrollers are used in a multitude of commercial applications such as modems, motor-control systems, air conditioner control systems空调控制系统, automotive engine and among others. The high processing speed and enhanced peripheral set of these microcontrollers make them suitable for such high-speed e
5、vent-based applications. However, these critical application domains also require that these microcontrollers are highly reliable. The high reliability and low market risks can be ensured by a robust testing process and a proper tools environment for the validation of these microcontrollers both at
6、the component and at the system level. Intel Platform Engineering department developed an object-oriented multi-threaded test environment for the validation of its AT89C51 automotive microcontrollers. The goals of this environment was not only to provide a robust testing environment for the AT89C51
7、automotive microcontrollers, but to develop an environment which can be easily extended and reused for the validation of several other future microcontrollers. The environment was developed in conjunction with Microsoft Foundation Classes (AT89C51). The paper describes the design and mechanism of th
8、is test environment, its interactions with various hardware/software environmental components, and how to use AT89C51.Are 8-bit microcontroller early or 4 bits. One of the most successful is the INTEL 8031, for a simple, reliable and good performance was a lot of praise. Then developed in 8031 out o
9、f MCS51 MCU Systems. SCM systems based on this system until now is still widely used基于此系统的单片机依然被广泛的应用. With the increased requirements of industrial control field, began a 16-bit microcontroller, but not ideal because the cost has not been very widely used. After 90 years with the great development
10、of consumer electronics, microcontroller technology has been a huge increase. With INTEL i960 series, especially the later series of widely used ARM, 32-bit microcontroller quickly replace high-end 16-bit MCU status and enter the mainstream market. The traditional 8-bit microcontroller performance h
11、ave been the rapid increase capacity increase compared to 80 the number of times. Currently, high-end 32-bit microcontroller clocked over 300MHz, the performance catching the mid-90s dedicated processor, while the average model prices fall to one U.S. dollar, the most high-end model is only 10 dolla
12、rs. Modern SCM systems are no longer only in the development and use of bare metal environment, a large number of proprietary embedded operating system is widely used in the full range of SCM. The handheld computers and cell phones as the core processing of high-end microcontroller can even use a de
13、dicated Windows and Linux operating systems. SCM relies on the program, and can be modified“单片机是靠程序的,并且可以修改。”这句话指出了单片机的本质内涵,突出体现单片机系统非普通硬件电路的特异性. Through different procedures to achieve different functions, in particular special unique features, this is another device much effort needs to be done, s
14、ome are great efforts are very difficult to achieve. A not very complex functions if the 50s with the United States developed 74 series, or the 60s CD4000 series of these pure hardware buttoned, then the circuit must be a large PCB board! But if the United States if the 70s with a series of successf
15、ul SCM market, the result will be a drastic change! Just because you are prepared by microcomputer programs can achieve high intelligence, high efficiency and high reliability!IntroductionThe 8-bit AT89C51 CHMOS microcontrollers are designed to handle high-speed calculations and fast input/output op
16、erations. MCS 51 microcontrollers are typically used for high-speed event control systems. Commercial applications include modems, motor-control systems, printers, photocopiers, air conditioner control systems, disk drives, and medical instruments. The automotive industry use MCS 51 microcontrollers
17、 in engine-control systems, airbags, suspension systems, and antilock braking systems (ABS). The AT89C51 is especially well suited to applications that benefit from its processing speed and enhanced on-chip peripheral functions set, such as automotive power-train control, vehicle dynamic suspension,
18、 antilock braking, and stability control applications. Because of these critical applications, the market requires a reliable cost-effective controller with a low interrupt latency response, ability to service the high number of time and event driven integrated peripherals needed in real time applic
19、ations, and a CPU with above average processing power in a single package. The financial and legal risk of having devices that operate unpredictably is very high. Once in the market, particularly in mission critical applications such as an autopilot or anti-lock braking system, mistakes are financia
20、lly指出89C51单片机特性及广泛的应用场合Prohibitive. Redesign costs can run as high as a $500K, much more if the fix means back annotating it across a product family that share the same core and/or peripheral design flaw. In addition, field replacements of components are extremely expensive, as the devices are typic
21、ally sealed in modules with a total value several times that of the component. To mitigate these problems, it is essential that comprehensive testing of the controllers be carried out at both the component level and system level under worst case environmental and voltage conditions. This complete an
22、d thorough validation necessitates not only a well-defined process but also a proper environment and tools to facilitate and execute the mission successfully.Intel Chandler Platform Engineering group provides postSilicon system validation (SV) of various micro-controllers and processors. The system
23、validation process can be broken into three major parts. The type of the device and its application requirements determine which types of testing are performed on the device.The AT89C51 provides the following standard featuresAT89C51单片机的详细硬件、逻辑接口功能介绍: 4Kbytes of flash, 128 bytes of RAM, 32 I/O lines
24、, two 16-bittimer/counters, five vector two-level interrupt architecture, a full duple ser -ail port, on-chip oscillator and clock circuitry. In addition, the AT89C51 is designed with static logic for operation down to zero frequency and supports two software selectable power saving modes. The Idle
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