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.
NXP offers ultra-low-power RTCs that provide low power consumption enabling long battery life with regard to real-time clock functionality, as well as temperature compensated RTCs with integrated crystal CMOS optimized for very high accuracy and low power consumption for industrial applications.
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.
Automotive RTCs
PCA85074ADPupdated
Low-powered, automotive grade Real Time Clock (RTC) IC optimized for reliable timekeeping with high temperature operation up to 125 °C.
PCA2131
PCA2131 is a nano-power highly accurate RTC with an integrated 32.768 kHz quartz crystal and a TXCO AEC-Q100 Grade 2 qualified.
PCA8525 Preproduction
High-Accuracy and Nano-Powered RTC IC with integrated temperature compensation and temperature rating up 125 °C in HVSON10 package options.
PCA85073A
Compact real-time clock calendar IC with alarm function delivers precise timekeeping and temperature compensation for automotive and industrial systems.
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.
RTCs with SPI
PCA2131
PCA2131 is a nano-power highly accurate RTC with an integrated 32.768 kHz quartz crystal and a TXCO AEC-Q100 Grade 2 qualified.
PCF2131
PCF2131 is a nano-power highly accurate Real Time Clock (RTC) with an integrated 32.768 kHz quartz crystal and a Temperature Compensated Crystal Oscillator (TXCO).
PCF85063B
Ultra-low power PCF85063B real-time clock/calendar with alarm function provides accurate timekeeping and SPI interface in a tiny 2x3mm package.
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.
RTCs with Temperature Compensation
PCF8525 Preproduction
High-Accuracy and Nano-Powered RTC IC with integrated temperature compensation and temperature rating up to 85 °C in WLCSP12 and HVSON10 package options.
PCA8525 Preproduction
High-Accuracy and Nano-Powered RTC IC with integrated temperature compensation and temperature rating up 125 °C in HVSON10 package options.
PCA2131
The PCA2131 is a CMOS real-time clock (RTC) and calendar with an integrated temperature compensated crystal (Xtal) oscillator (TCXO) and a 32.768 kHz quartz crystal.
PCF2131
PCF2131 is a nano-power highly accurate Real Time Clock (RTC) with an integrated 32.768 kHz quartz crystal and a Temperature Compensated Crystal Oscillator (TXCO).
RTCs with I²C-Bus
PCA85074ADPupdated
Low-powered, automotive grade Real Time Clock (RTC) IC optimized for reliable timekeeping with high temperature operation up to 125 °C.
PCF8525 Preproduction
High-Accuracy and Nano-Powered RTC IC with integrated temperature compensation and temperature rating up to 85 °C in WLCSP12 and HVSON10 package options.
PCA8525 Preproduction
High-Accuracy and Nano-Powered RTC IC with integrated temperature compensation and temperature rating up 125 °C in HVSON10 package options.
PCA2131
PCA2131 is a nano-power highly accurate RTC with an integrated 32.768 kHz quartz crystal and a TXCO AEC-Q100 Grade 2 qualified.
PCF2131
PCF2131 is a nano-power highly accurate Real Time Clock (RTC) with an integrated 32.768 kHz quartz crystal and a Temperature Compensated Crystal Oscillator (TXCO).
PCF85053A
PCF85053A is a CMOS Real-Time Clock (RTC) and calendar with dual I²C interface optimized for low power consumption and automatic switching to battery on primary power loss.
PCF85063A
Ultra-compact real-time clock/calendar PCF85063A delivers precise timekeeping with low power consumption and battery backup for consumer electronics.
PCF85263A
Battery-backed RTC calendar with alarm, timestamping, programmable interrupts, and integrated EEPROM in a small 8-pin package for accurate time tracking.
PCF85363A
Ultra-low-power RTC calendar with alarm, battery backup and timestamp, featuring 64-byte RAM and I2C interface for precise timekeeping applications.
PCF8563
Battery-backed real-time clock calendar module with time-keeping functions, alarm capabilities and low standby current for consumer electronics.
PCA85073A
Compact real-time clock calendar IC with alarm function delivers precise timekeeping and temperature compensation for automotive and industrial systems.
Evaluation Boards and Reference Designs
NXP offers evaluation boards and reference designs that make secure edge solutions connected and efficient with innovative analog technologies. Start today.
Additional Documents
NXP System Management I²C, I3C and SPI Selector Guide
Selector guide of interface components for all your design needs.
Read the selector guideSolutions Around the Core: Analog, Interfaces and NFC
Discover other solutions we offer for your designs.
Read the brochureAutomotive Solutions Advanced Analog Fact Sheet
NXP’s robust portfolio of automotive-compliant products includes over 700 devices and solutions that help enable breakthrough automotive designs.
Read the fact sheet