摘要
PS7219芯片集驱动、译码、扫描于一片。应用其设计LED显示电路时,可大大简化电路设计,提高可靠性,便于调试,方便地实现几十个LED的同时显示。介绍了PS7219的管脚功能及显示的硬件电路,详细分析了显示和串联实现的原理及其软件编程,给出了应用中的几个常见问题及其解决方法。
The functions of driving,decoding a nd scanning are integrated into one c hip,so It can simplify the design of t he circuit and increase its reliability greatly to use PS7219,and can make i t debugged more easily as well.Moreover,it' s convenient to realize tens of LEDs ' displaying synchronously.This pap er introduces the pin' s function and dis-playing hardware circuit of PS7219,then analyzes the principle of displ aying in series and software program ming in detail,and finally some usual probl ems and solutions in application are given out.
出处
《自动化与仪表》
2002年第5期9-11,共3页
Automation & Instrumentation
