摘要
介绍了PCF8583的一种特别使用方法。用PCF8583作为定时器,在由89C52构成的室内供暖计费系统中,实现预定时开关供暖阀门部分的功能。这一系统使用了两片PCF8583,负责关闭和开启阀门。在PCF8583和单片机AT89C52之间加进了微分和积分电路,以实现硬件封锁PCF8583上电复位后INT脚出现的周期为1s的连续脉冲信号。
A special usage of PCF8583 was introduced. It used the PCF8583 as timers to realize the function of prearranging the heating valve' s on-off time in the house heating expenses system composed of 89C52. The system used two pieces of PCF8583 to turn off and on the valve. Some differential and integral circuits were added between the PCF8583s and monocontroller AT89C52, in order to blank off the second cycle pulse signal on the INT foot of PCF8583 by hardware when resetting.
出处
《鞍山科技大学学报》
2003年第2期93-95,共3页
Journal of Anshan University of Science and Technology
