【摘要】 介绍了低功耗8位单片机P89LPC930和数字温度传感器LTM8871的基本特性。针对分体式太阳能热水器的使用要求,结合RC振荡电路、多功能时钟模块、固体继电器、4位LED显示模块,设计了一个小型测控系统;给出了系统框图及软件流程图。利用P89LPC930单片机的低功耗和20mA驱动能力以及LTM8871的单线接口方式,实现了整个系统的超低功耗,结构简单,性能稳定,经济实用。更多还原

【Abstract】 The characteristic of the low power miermeontroller P89LPC930 and the digital temperature sensor LTM8871 is introduced. In accordance with the user requirement, A small detection and control system is designed combining the RC oscillating circuit , the Multi- purpose clock module PCF8563 , the Solid relay GJ20 and the 4 bits LED module; Thecircuit schematics and the relational di- agram of software modules are given. Using the low power and 20mA driving force of the P89LPC930 microcontroller and the 1- WARE interface mode of the LTM8871, the ultra- low power,simple structure, stable performance and practicality of the whole system is realized更多还原