摘要
CD4052是一种数字控制的模拟数据选择/分配器,本文将它用于UART串口扩展,解决了普通单片机UART串口太少的问题。文中给出该器件的主要特性、引脚说明及电气特性,并以AT89C51单片机为例给出多串口扩展应用电路。
The CD4052 analog multiplexers/demultiplexers is digital, ly controlled analog switches. In this article , it is used as mul - series expander to solve the problem of having too less UART on ordinary Microcontroller. The features, pin assignment and electrical charactristics are introduced in detail, and application circuit is given on the base of AT89C51.
出处
《河南机电高等专科学校学报》
CAS
2005年第3期17-18,共2页
Journal of Henan Mechanical and Electrical Engineering College
