摘要
以AT89C51单片机为核心,采用I2C总线接口芯片ZLG7290作为外扩芯片对键盘及显示电路进行驱动控制,实现了基于I2C串行通信的系统键盘输入及显示输出,讨论了系统硬件设计方案、软件设计思想以及编程实例。该方案简化了电路结构,提高了系统的抗干扰性和可维护性。
In order to expand the I/O capability of an embedded system with the AT89C51 single chip controller as a core, ZLG7290 with I2C interface was used for keyboard and display drivers. This paper discussed the system hardware and software design. The design simplified the circuit structure and improved the system noise immunity and maintainability.
出处
《仪表技术与传感器》
CSCD
北大核心
2012年第2期90-92,共3页
Instrument Technique and Sensor
