介紹了超低功耗16 位單片機MSP430F1121 和數字溫度傳感器DS18B20 的基本特性，結合4 位段型液晶顯示模塊LCM046 和升壓型DC-DC 變換器MAX1674，設計了一個小型測溫系統。并基于集成開發環境IAR Workbench 給出了主要的C430函數。利用MSP430 單片機的超低功耗以及DS18B20 的單線接口方式，實現了整個系統的低功耗，結構簡單，性能穩定，經濟實用。
關鍵詞：測溫系統; MSP430F1121; DS18B20; C430; MCU

A Mini-Temperature Detecting System Based On The MSP430 Microcontroller And DS18B20
LI Hong[1], WENG Xiu-Mei[1], GAO Zhen-tian[2] ([1]Hebei Institute of Architectural and Civil Engineering,[2]The college of Information Science and engineering, YanShan University)
Abstract: The characteristic of the ultra-low power microcontroller MSP430F1121 and the digital temperature sensor DS18B20 is introduced. A mini-temperature detecting system is designed combining the 4 bits segmented LCD module LCM046 and the DC-DC converter MAX1674. Some primary C430 functions are presented in the IAR Workbench IDE. Using the ultra-low power of the MSP430 microcontroller and the 1-WARE interface mode of the DS18B20, the ultra-low power、simple structure、stable performance and practicality
of the whole system is realized.
Key words: temperature detecting system; MSP430F1121; DS18B20; C430; MCU