NXP’s broad portfolio of tiny, full-featured real-time clocks deliver higher accuracy and lower power consumption to a variety of end applications. From battery management and alarm to time-stamp and tamper detect functionality, RTCs from NXP offer a wide range of features for your system. Automotive compliant AEC-Q100 devices are also available.

  • 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 with Integrated Crystal CMOS RTCs are optimized for very high accuracy and low power consumption for industrial applications. The devices sense temperature and make internal adjustments to ensure accurate time keeping over 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 125º C and AEC-Q100 automotive-compliant qualification.

Recommended Products

Part Number Description Resolution VDD (interface) Download Datasheet Buy
PCF85063 Tiny RTC/calendar with alarm function and I²C-bus 1 sec to year 1.8 to 5.5 PDF
(414 KB)
Buy
PCF85263 Tiny RTC/calendar with alarm function, battery switch-over, time stamp input, and I²C-bus 1/100th sec to year 1.8 to 5.5 PDF
(299 KB)
Buy
PCF85363 CMOS RTC/calendar with battery back-up switch, time stamp, and RAM 1/100th sec to year 1.8 to 5.5 PDF
(1.05 MB)
Buy
PCF2127 Highly accurate RTC with Xtal oscillator (TCXO) for industrial applications 1 sec to year 1.8 to 4.2 PDF
(271 KB)
Buy
PCF2129 Highly accurate RTC with Xtal oscillator (TCXO) for industrial applications 1 sec to year 1.8 to 4.2 PDF
(623 KB)
Buy

See entire Real-Time Clock portfolio

Standard Key Features: UART, I2C, I2S, SPI, 16-bit ADC, 12-bit DAC, timers, comparators and GPIO.
 CommunicationsHuman Machine InterfaceSecurity
ProductCPUMemoryPackagesEthernetCANUSBSVGA LCDSegment LCDHW EncryptTamper DetectionEncrypt Firmware Update
K8x
Scalable and Secure
ARM Cortex-M4 150 MHz 256 KB Flash, 256 KB SRAM, XIP QuadSPI LQFP, MAPBGA, WLCSP                
K7x
Graphic LCD
ARM Cortex-M4 120–150 MHz 1 MB Flash, 128 KB SRAM MAPBGA                
K6x
Ethernet
ARM Cortex-M4 100–180 MHz 256 KB–2 MB Flash, 64–256 KB SRAM LQFP, MAPBGA, WLCSP                
K5x
Measurement
ARM Cortex-M4 72–100 MHz 160–512 KB Flash 32–128 KB SRAM LQFP, MAPBGA                
K4x
USB and Segment LCD
ARM Cortex-M 472–100 MHz 64–512 KB Flash, 16–128 KB SRAM LQFP, MAPBGA                
K3x
Segment LCD
ARM Cortex-M 472–100 MHz 64–512 KB Flash, 16–128 KB SRAM LQFP, MAPBGA                
K2x
USB
ARM Cortex-M4 50–180 MHz 32 KB–2 MB Flash, 8–256 KB SRAM LQFP, QFN, MAPBGA, WLCSP                
K1x
Baseline
ARM Cortex-M4 50–120 MHz 32 KB–1 MB Flash, 8–128 KB SRAM LQFP, QFN, MAPBGA                
K0x
Entry-level
ARM Cortex-M4 100 MHz 64–128 KB Flash, 16 KB SRAM LQFP, QFN