【正文】 n, on the other hand is due to such CPU as the core, integrated with more I / O functions SCM module of the new series emerging. It is expected that the successful listing of the relatively young core CPU, also with the The I / O modules of the rich, have a long life cycle. New types of joining the CPU, the SCM team Has grown to the user brings more choice. 8, 16, 32bit microcontroller mon development this is the current SCM technology development trends of the other. For a long time, single Machine 本科畢業(yè)論文 2 technology is the development of eightoriented. As mobile munication, work technology, multimedia technology, and other hightech products Access to family, 32bit microcontroller applications have been developed by leaps and bounds. Motorola 68K for the CPU to the 32 of the 97 SCM August sales of 10 million. That because of the past eight SCM function is growing, more and cheaper 32bit machine, 16 SCM living space is limited, and 16bit microcontrollers from the development of both varieties and production, in recent years have substantially more。 Of growth. SCM faster development in the MPU demonstrated by the faster clock frequency is increasing as the hallmark。 And the realization of nearly μ m technology, all designed so that static clock frequency from DC to several trillion optional, so that power consumption declining Motorola recently introduced optional M. CORE in the V 本科畢業(yè)論文 3 voltage to 50 M/48MIPS work at full speed, power is about 20mW. Almost all the SCM has Wait, Stop, and other powersaving operation mode. Allowing the use of the power supply voltage range Increasingly wide. General SCM can be three to 6 V work within the framework of the batterypowered SCM is no longer the need for power Regulators take measures. SCM lowvoltage power supply has been lower limit of V to V, . The single power supply Machine has e out. Low noise and high technology to improve the reliability of the system MCUelectromagic interference ability, so that products can adapt to the adverse For the environment, to meet higher standards of electromagic patibility requirements, the SCM businessmen in the internal circuits to SCM A number of new technical measures. NS such as National Semiconductor39。s production pany and 8051patible microcontroller also adopted the MTP performance, OTP price. These are the use of the ISP SCM technologies, such as installation Printed circuit board at a later time to download. 2 A wide selection of SCM SCM Motorola Motorola is the world39。s new concept. adopted the structure of the RISC CPU, the CPU maximum operating frequency of 50MHz. Computational speed close to 50 MIPS. With a powerful CPU, all I / O functions will be able to use software to simulate SCM adopted 20/28pin package. Offers a wide range of I / O39。s sales strategy focused on the customer service and invest considerable technical force to help the customers to develop products Toshiba Toshiba MCU MCU is characterized by plane from four to 64wide range. 4 machine in the field of household electrical appliances are still more Big market. Eight major 870series, 90 series, the MCU allows the use of such slow mode, a 32 K clock When power consumption to 10 μ A number of class. CPU39。s 32bit microcontroller using the MIPS 3000A RISC CPU structure, and the VCD, digital cameras, image processing, etc. Market. Fujitsu Fujitsu MCU has eight, 16 and 32bit microcontroller, but eight of the 16 aircraft is the CPU core This means that eight planes and 16 aircraft used in the same direction, making development more easily. 8bit microcontrollers are wellknown MB8900 series, a 16MB90 39。s largest amount of several single One of the machine. As Intel Corporation in embedded applications will focus on 186,386, such as the Pentium class PC patible Development of highend chip, the 8051 class SCM primarily by Philips, Samsung and Winbond, and other panies Jiechan. These panies 本科畢業(yè)論文 7 are While maintaining patibility with the 8051 microcontroller on the basis of 8051 to improve the lot of (such as timing characteristics). Improve the speed, descending Lower clock frequency, the relaxation of the supply voltage of the dynamic range, lower product prices. Zilog microcontroller is Zilog Z8 microcontroller pany39。s products, the pany to produce advanced simulation of the circuit Said. Can produce a high level of digital simulation of mixed circuit. COP8 SCMchip integrated 16bit A / D, which is in the SCM Rare. COP8 SCM internal use of the antiEMI circuit, the watchdog circuit in STOP mode and the call SCM Peter methods are unique. In addition, COP8 encryption control procedures also do better. Samsung Samsung SCM SCM has KS51 and KS57 series four SCM, KS86 and KS88 series of 8bit microcontrollers, KS 17 Series 16 SCM and KS32, 32bit MCU OTP1 SPprogramming in. Samsung public Secretary for the production of memory chips, the memory market oversupply situation, to get involved in the petition to participate in SCM. Samsung SCM technology in the developed countries to introduce to digest the technical, production patible with the product, and then to price Geia advantage to win. For example, in the four aircraft used on the NEC39。s technology. SCM die of their very petitive price Winbond Winbond MCU is a 8051 class SCM, W78 their series with the standard 8051 patible, W77 Series Enhanced 51, 8051 the timing was same clock frequency speed of times, FLASH capacity From 4 K to 64 K, a function of ISP. SCM in four areas Winbond with a 921 series and 741 series of LCD driver. 32K,Winbond use HP PARISC microcontroller technology, low production of the 32bit RISC MCU. SCM vendors mentioned above is to enter the Chinese market as part of the SCM vendors, there are many wellknown single Filmm