單片機(jī)的發(fā)展外文翻譯

1、- 1 -THE DEVELOPMENT OF SINGLE-CHIPFirst the development trend of single-chip It can be said now is a single-chip opinions of the period, the world's major chip manufacturing companies have introduced their own sing

2、le-chip, from the 8, 16-32, just to name a few, everything, it is compatible with mainstream C51 series of , there are not compatible, but they own each other into each other, for SCM applications world wide. Throughout

3、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 widespre

4、ad 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

5、 use of HMOS (high density metal oxide semiconductor process) and CHMOS (high-density complementary metal oxide semiconductor process). Although the CMOS low power consumption, but because of its physical characteristics

6、 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 suitable in low power consumption, as battery-powered applications . Ther

7、efore, 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 (R

8、AM), read-only 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

9、, PMW (pulse width modulation circuit), WDT (watchdog), and some will be single-chip LCD (LCD) driver integrated circuits are in a single chip, this unit includes single-chip circuits on more and more powerful features.

10、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, the product is now the universal demand of small s

11、ize, 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,

12、 making the system constituted by 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 microc

13、omputer 80C51 - 3 -microcontroller at the same 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

14、, such as fast Fourier transform. It combines traditional single-chip integrated single-chip greatly enhanced functionality. This is the single-chip, one of the greatest progress. This single-chip microcomputer has the m

15、ost typical Infineon's TC10GP; Hitachi's SH7410, SH7612 and so on. These are high-end single-chip single-chip, MCU is 32 and the DSP 16 or 32-bit structure, the frequency of 60MHz or more generally. 2, power cons

16、umption, packaging and power supply voltage of the progress Now the new single-chip power consumption is getting smaller and smaller, especially the many single-chip are a variety of work settings, which include waiting,

17、 suspended, sleep, idle, power-saving mode and so on. P87LPC762 single-chip company Philips is a very typical example, in idle, the power consumption is 1.5 mA, while in power-saving mode, the power consumption is only 0

18、.5mA. In the most amazing power is TI's MSP430 family of single chip, it is a series of 16, there are ultra-low power work. Its low-power way LPM1, LPM3, LPM4 three. When the power supply to 3V, if the work in the LM

19、P1, even if the external circuit is active, inactive as a result of CPU, oscillator at 1 ~ 4MHz, when power consumption is only 50? A. In LPM3, the oscillator at 32kHz, this power consumption is only 1.3? A. In LPM4 when

20、, CPU, peripherals and not the activities of 32kHz oscillator, the power consumption is only 0.1? A. Now the level of single-chip package has been greatly enhanced, with the emergence of chip technology, a large number o

21、f single-chip also used a variety of chip technology in line with the package appears to significantly reduce the volume. In this situation, Microchip has introduced the single-chip 8-pin special attention. This is PIC12

22、CXXX series. It contains 0.5 ~ 2K program memory, 25 ~ 128 bytes of data memory, 6 I / O port and a timer, and some also with four A / D, fully able to meet a number of low-grade system. To expand the scope of supply vol

23、tage and low voltage work is still today one of the objectives of single-chip development. At the moment, it can be single-chip 3.3 ~ 5.5V conditions. And some manufacturers, it can produce 2.2 ~ 6V to work under the con

24、ditions of the single chip. These single-chip companies are Fujitsu's MB89191 ~ 89195, MB89121 ~ 125A, MB89130 series, it should be said that the company's F2MC-8L MCU meet the vast majority of the 2.2 ~ 6V opera

25、ting voltage conditions. MSP430X11X and TI's family of operating voltage is as low as 2.2V's. 3, the progress of technology Basically, the current single-chip CMOS technology used, but most use 0.6? M above the l

26、ithography process, there are individual companies such as Motorola Inc. have been using 0.35? M or even 0.25? M technology. These technological advances greatly improved the internal single-chip density and reliability.