at89c51 与 at89s5152 的区别（The difference between AT89C51 and at89s5152）.doc

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at89c51 与 at89s5152 的区别（The difference between AT89C51 and at89s5152）.doc

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at89c51 与 at89s5152 的区别（The difference between AT89C51 and at89s5152）

at89c51 与 at89s5152 的区别（The difference between AT89C51 and at89s5152） The difference between AT89C51 and AT89S51/52 Beginner 51 SCM people will have such a question: what is AT89S51? Books and online tutorials are 8051, 89C51 and so on! Havent you heard of 89S51? So I sort out a piece of information about it Here, a product for beginners to clarify the concept of practical use of MCU, MCS-51 microcontroller is the INTE company in 1980 launched the product, the typical products are 8031 (no internal program memory, the actual use has been out of the market), 8051 (HMOS, chip mining power is 630mW, is 5 times the actual 89C51 use has been out of the market) and 8751 generic products, until now, the MCS-51 kernel series compatible MCU application is still the mainstream products (such as the popular 89S51, 89C51 etc.), all colleges and universities and professional schools are training materials and MCS-51 microcontroller as the representative of the theoretical basis of learning. New features added by AT89S51 relative to AT89C51 include: - the new add many functions, the performance has been greatly improved, prices basically unchanged, even lower than 89C51! - ISP online programming function, the advantage of this function is to rewrite the microcontroller memory program, no need to chip off from the working environment. Is a powerful, easy-to-use feature. - the maximum working frequency is 33MHz, and as you all know, the 89C51s limit frequency is 24M, that is to say, S51 has higher working frequency, so it has faster computing speed. - duplex UART serial channels. - an internal integrated watchdog timer that no longer requires a watchdog timer circuit like the 89C51. Dual data indicator. - power off mark. - the new encryption algorithm, which makes it impossible to decrypt 89S51, greatly enhances the confidentiality of programs, so that it can effectively protect intellectual property rights from infringement. - Compatibility: fully compatible with 51 full word rang