超高精度实时时钟DS3231及其在多费率电能表中的应用  

Extremely accurate real-time clock chip DS3231 and its application in multi-rate Watt-hour meter

作　　者：汪社民[1] 

机构地区：[1]景德镇陶瓷学院,江西景德镇333403

出　　处：《电测与仪表》2007年第2期60-64,共5页Electrical Measurement & Instrumentation

摘　　要：DS3231是一款由Maxim Dallas公司推出的低成本、超高精度实时时钟芯片,在其封装内集成有温补振荡器和晶体,能够在-40℃～+85℃温度范围内提供优于±2分钟/年的计时精度,非常适合那些对计时精度要求极高的应用。介绍了DS3231的主要特性、引脚功能、内部结构和编程要点。给出了DS3231在多费率电能表中的应用方法。The DS3231 of Maxim/Dallas is a low-cost and extremely accurate real-time clock chip with a temperature-compensated crystal oscillator and a crystal. It provides better than ±2 minutes per year accuracy over the -40℃ to ＋85℃ temperature range. DS3231 is very suitable for applications requiring extremely accurate timekeeping. In this paper, the main features, the pin function, the interior structure and the programming essentials of the DS3231 are introduced, and the application method of the DS3231 in Multi-rate Watt-hour Meter is given.

关 键 词：实时时钟 DS3231 多费率 电能表 I^C总线 

分 类 号：TM933[电气工程—电力电子与电力传动] TM229.1[一般工业技术—材料科学与工程]