Real-Time Clocks

Our broad assortment of tiny, full-featured real-time clocks (RTCs) delivers high accuracy and low power consumption to a variety of end applications.

  • Ultra-Low-Power RTCs provide the low power consumption that enables long battery life with regard to real-time clock functionality. Energy-efficient devices are available with I2C or SPI bus interfaces.
  • Temperature Compensated RTCs with Integrated Crystal CMOS are optimized for very high accuracy and low power consumption for industrial applications. The devices sense temperature and make internal adjustments to ensure accurate timekeeping over the temperature range. Available with pin-selectable I2C-bus or SPI bus.
  • AEC-Q100 Qualified RTCs are designed for highest reliability and lowest power consumption and are available with I2C or SPI bus interfaces. They have an extended operating temperature range of up to 125° C and AEC-Q100 automotive-compliant qualification.
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Product Details

Automotive RTCs

Our automotive real-time clocks provide the highest reliability and lowest power consumption. These devices feature either I2C or SPI bus interfaces and support a range of automotive applications (instrument cluster, tachographs, black boxes for electronic road pricing, battery management units, car radios). They provide year, month, day, weekday, hour, minute and second information and feature-programmable alarm and timer functions with interrupt capability.

RTCs with Temperature Compensation

This selection of low-power real-time clocks features temperature compensated integrated quartz crystal (TCXO) with integrated capacitors for very high accuracy.

New RTC IC with Dual I2C Interface and Battery Backed-Up SRAM Memory

PCF85053A enhances the server’s architectures with the use of low-power standalone RTC, dual I2C interface and 128 Byte SRAM to interconnect CPU and BMC.

Read the RTC Selector Guide
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NXP Portfolio of RTC IC and RTC Modules: PCF2131TF and PCA2131TF

This video depicts a closer look at NXP’s newest real-time clock (RTC) module additions PCF2131TF and PCA2131TF.