摘要
目前数字系统的工作电压已从5V降至3V(含3.3V)甚至更低,但是目前市场上依然存在很多5V供电的器件,因此在很多设计中采用混合电压系统。本文介绍低电压供电的MSP430系列单片机与5V供电的器件接口时所产生的逻辑电平的不匹配问题,分析了产生原因,并提供了相应的解决方案。
The digital system's work voltage has downed from 5V to 3V(included 3.3V) and even more lower.But now there are many ICs which supplied with 5V,so mixed voltage system has been widely used in designs.This paper introduced the problem of MSP430 family which contracted with 5V system IC.And also analysed it ,so provided several solutions.
出处
《仪器仪表用户》
2005年第4期39-41,共3页
Instrumentation
