摘要
具有串行接口的8位LED显示驱动芯片MAX7221,其串行接口与SPI完全兼容,它的笔段驱动器由于其摆率受到限制降低了电磁干扰。介绍了使用MAX7221的LED显示器电路构成及其显示程序的设计方法。以实用的8位/16位显示器为例,给出了显示程序的流程图。
8-digit LED display driver MAX7221 has a serial interface,which interface is fully SPI compatible and its segment drivers are slew-rate limited to reduce electromagnetic interference.The paper introduces a LED display with MAX7221 and the design method of its display routine.Taking a practical 8-digit/ 16-digit display as an example,it gives the graph of the display routine.
出处
《杭州电子工业学院学报》
2003年第3期30-33,共4页
Journal of Hangzhou Institute of Electronic Engineering
关键词
串行接口
LED显示器
电磁干扰
亮度控制
译码方式
单片机
microcontroller unit[MCU]
serial interface
intensity control
decode mode
electro-magnetic interference[MI]
