Based on the rapid development of semiconductor integration technology, various types of single-chip microcomputers are flooding into the market with each passing day, which provides great convenience for the application personnel of single-chip microcomputer technology. INTEL launched the high-performance MCS51 series of 8-bit single-chip microcomputers based on the MCS48 series. Now, the 32-bit single-chip microcomputers are provided to users with their powerful on-chip functions. No matter which number of single-chip microcomputers or which series of single-chip microcomputers, they have created an extremely powerful hardware environment for the development of new products, the research of application systems, the research of intelligent controllers, and the application of high-tech. At present, it can be said that due to the production of universal and various series and models of single-chip microcomputers by manufacturers all over the world, the application of single-chip microcomputer technology has reached an all-pervasive level. The single-chip microcomputer with industrial control function has far exceeded the imagination of the original designer. However, the eight-bit single-chip microcomputer, which accounts for about 60% to 65% of the global single-chip microcomputer sales, is still the mainstream of current applications. In terms of domestic application practice, the largest number of single-chip microcomputers are eight-bit single-chip microcomputers, and the eight-bit single-chip microcomputers are the most widely used. The eight-bit single-chip microcomputers still have the charm of the times. The high-performance MCS51 series of eight-bit single-chip microcomputers launched by INTEL were quickly welcomed by users as soon as they were put on the market. As time goes by, companies producing single-chip microcomputers around the world are optimistic about the strong trend of the MCS51 series of eight-bit single-chip microcomputers, and have moved closer to the 51 series of eight-bit single-chip microcomputer cores in the design of eight-bit single-chip microcomputers. PHILIPS first purchased the right to use the 8051 core and added the self- The I2C bus has its own characteristics. PHILIPS has launched a series of high-performance standard 80C51 derivative 8-bit single-chip microcomputers with flash memory. It is very convenient to program online many times, which brings great convenience to users. ATMEL has obtained the right to use the 80C31 core through technology exchange and produced the AT89C series of single-chip microcomputers. SIEMENS\'s SABC5 series of 8-bit single-chip microcomputers C500CPU are fully compatible with 80C51. Taiwan WINBOND\'s W78 series of 8-bit single-chip microcomputers produced by South Korea\'s LG Semiconductor are also compatible with the standard 8051. The BT/AT89C51 designed by the Beijing Integrated Circuit Design Center is also compatible with the MCS51 series of 8-bit single-chip microcomputers. The microcontrollers are fully compatible in terms of instruction systems and pins. Cygnal Corporation of the United States, headquartered in Texas, is an emerging semiconductor company established in March 1999. The company specializes in the design and manufacture of mixed-signal system-on-chip microcontrollers. The company is optimistic about the market prospects of eight-bit microcontrollers. It has updated the original 51 microcontroller structure and designed the CIP-51 core with independent intellectual property rights, which has given the 51 microcontroller a new vitality. Its operating speed is as high as 25MIPS per second. It has designed and provided the market with 29 varieties of C8051F series system-on-chip microcontrollers. It is expected that more than 20 new system-on-chip microcontrollers will be designed this year. After three years of steady development, it has grown into a dazzling new star in the semiconductor industry. Cygnal C8051F series microcontrollers were introduced to mainland China by Shenyang Xinhualong Electronics Co., Ltd. in 2001 and made their debut at the 2001 International Academic Exchange Conference and Product Exhibition on Embedded Systems and Microcontrollers in November, attracting great attention from the participants.
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