实时时钟(RTC) IC在电子电路中用于记录时间。多数应用对于维持高精度计时有很高要求,特别是在特殊时期或设备主电源关断时。在此期间,RTC IC利用辅助电池或超级电容供电,必须保持可靠的性能。正如预期的那样,除了精度、耐用性和小封装尺寸之外,功耗也是大多数实时时钟设计的关键因素。大多数现代RTC通过支持串口来减少引脚数量。Maxim提供各种高精度、低功耗、小型封装和基于MEMS(微机电系统)的实时时钟,以满足用户的应用需求。
- 使用包含自动增益控制(AGC)电路的IC可降低功耗。
- 基于MEM的RTC可提高冲击和振动容限。
- 专有的SYNC功能支持RTC与外部时钟同步。
- 集成晶振或MEMS振荡器的RTC提供多种途径减小电路板空间。
选型指南
应用笔记
设计指南
技术文档

August 27, 2019
Learn why a small, low-power RTC is ideal for applications requiring a backup battery, trickle charger, RAM, and/or power management.
August 20, 2019
Breakout boards are one of the many platforms that can help speed your prototyping and design process.
August 08, 2019
Learn how a small, low-voltage RTC helps minimize power consumption in clocking applications.
August 01, 2019
Learn 3 reasons why using a discrete RTC in your wearable design can be advantageous for overall solution size and power management efficiency.
September 18, 2018
Guest blogger Jim Harrison makes the case for including a real-time clock in your design. With their affordability and accuracy, why not?
April 25, 2018
Guest blogger nanoMan, the expert of all things nanoPower, shares a quiz that tells you what type of analog hero you are.