| 单片机的多串口扩展技术的设计 |
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| 引用本文： | 刘小芳,曾黄麟,吕炳朝. 单片机的多串口扩展技术的设计[J]. 计算机测量与控制, 2004, 12(11): 1088-1090 |
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| 作者姓名： | 刘小芳 曾黄麟 吕炳朝 |
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| 作者单位： | 四川理工学院,计算机系,四川,自贡,643033;电子科技大学,四川,成都,610054 |
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| 基金项目： | 四川省应用基础研究资助项目(02GY029-005) |
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| 摘 要： | 针对大多数单片机都只有一个串口的局限，在多数情况下限制它们的应用。利用单片机串口扩展技术，以MCS51系列单片机8751为例进行串行接口扩展，包括扩展两个独立的串口、一点对多点分时串口、单片机与RS232／RS422／RS485的串行通信接口。实际应用证明，设计可靠，稳定性好。用多种方法进行串口扩展，解决了单片机在串行通信系统中的串口局限问题。
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| 关 键 词： | 单片机 串行接口 串口扩展 串行通信 |
| 文章编号： | 1671-4598(2004)11-1088-03 |
| 修稿时间： | 2004-02-01 |
Design of Multi-serial Port Extended Technology of Single-chip-microcomputer |
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| Liu Xiaofang,Zeng Huanglin,Lv Bingchao. Design of Multi-serial Port Extended Technology of Single-chip-microcomputer[J]. Computer Measurement & Control, 2004, 12(11): 1088-1090 |
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| Authors: | Liu Xiaofang Zeng Huanglin Lv Bingchao |
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| Affiliation: | Liu Xiaofang~1,Zeng Huanglin~1,Lv Bingchao~2 |
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| Abstract: | Aiming at the limitation of a serial port in most of single-chip-microcomputers, their applications have been confined in most circumstance. Serial port extended technology of single-chip-microcomputer has been utilized in serial interface extension about 8751 of MCS51 series, including extension of two unaided serial ports, one spot to multi-spot assignment time serial port, and serial communication interface between single-chip-microcomputer and RS232/RS422/RS485. Practical application proves that the design is well reliable and stable. Multi-methods of serial port extension have solved serial port limitation problem in serial communication system of single-chip-microcomputer. |
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| Keywords: | single-chip-microcomputer serial interface serial port extension serial communication |
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