【正文】 LASH, for multiple programming. Winbond39。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 largest manufacturers of SCM. All varieties, choice, new products Many of its features, there are eight of 68 HC05 and upgrading of products 68 HC08, 68HC05 have more than 30 series, more than 200 Varieties, production has more than 2 billion. 8 enhanced MCU 68 HC11 has more than 30 varieties, 100 million in annual output Upgrading of products are 68 HC12. 16 crew 68 HC16 has over 10 varieties. 32 SCM 683 XX series also There are dozens of varieties. In recent years, PowerPC, Coldfire, M. CORE as the CPU. DSP module will be assisted as Integrated SCM have also launched. SCM is still the first choice for licensing. Motorola is one of the characteristics of SCM Under the same speed used by the clock frequency than Intel category SCM much lower, thus making highfrequency low noise, interference can Resilient, more suitable for industrial areas and poor environment. Motorola 8bit microcontrollers past the mask is the main strategy Recently introduced OTP plans to adapt to new trends in the development of SCM, in the 32 on board, M. CORE in performance and power 本科畢業(yè)論文 5 consumption Are better than the ARM7. Microchip microcontroller Microship SCM is the fastest growing market share of the SCM. Its main product is 16C Series 8bit microcontrollers, CPU use RISC architecture, only 33 directives, run faster, and to a lowcost, general SCM prices are below a dollar. Microship SCM not mask products, all OTP devices, Micros hip stressed that the most costoptimized design, suitable for consumption, low grade, price sensitive products. Scenix SCM Scenix MCU I / O modules with new I / O modules of the integrated bination of technology and technology is SCM An indispensable important aspects. In addition to the traditional I / O modules such as parallel I / O, URT, SPI, I2C, A / D, PWM, PLL, DTMF, the new I / O modules emerging, such as USB, CAN, J1850, is the most representative of Motorola 32bit microcontroller, which integrates a variety of munication protocols, including the I / O modules, and Scenix SCM in I / O modules Handling of the introduction of the Virtual I / O39。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 library for the realization of I / O modules Function. These software modules including the pletion of the multichannel UART, multichannel A / D, PWM, SPI, DTMF, FSK, LCD Driver And so on, these are often used together hardware module is quite plex. NEC MCU MCU Zichengtiji to 8bit microcontrollers 78 K series of the highest yield, but also 16, 32 Monolithic Machine. 16 adopt the octave above SCM technology in order to reduce the clock frequency. Some MCU with builtin 本科畢業(yè)論文 6 operation System. NEC39。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 internal use of multiple registers, making interrupt response and processing more efficient. Toshiba39。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 focus on services big panies and big customers, to help the development of large customers Products. Epson Epson SCM good at manufacturing pany known for liquid crystal displays, the Epson SCM major production for the pany Supporting the LCD. SCM is characterized by its LCD driver has done some particularly good. In lowvoltage, low power consumption is also very Characteristics. Currently Vpowered SCM has been listed in the near future, LCD display of watches category SCM will use V power supply. Class of 8051 MCU first introduced by Intel Corporation of the 8051/31 class SCM is the world39。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, a multiaccumulator structure, have a stronger will interrupt handling OTPbased products, Z8 microcontroller development tools that can be cheap. Z8 microcontroller to lowcost advantage for low Client applications, mainly to 18pin package, ROM for the ~ 2 K. Zilog panies have also recently introduced the Z86 series of SCM, The series can be integrated within the DSP units cheap. NS M