NXP Semiconductor founded by Phillips Electronics - Standard ICs [Products - I2C/SPI Real Time Clock/Calendars and I2C-bus/SPI-bus RTC/Calendar Functions

NXP Semiconductors offers a number of real time clock/calendars based on 32kHz quartz oscillators. With these products, time keeping is made easy, and alarm, timer, and watch-dog features complement the basic functionality. Extremely low power consumption, down to 250nA, outperforms most RTCs in microcontrollers. This allows you to use the RTC to wake up a microcontroller in hibernation mode for greater power savings.

Our real time clock/calendars are primarily differentiated by their I2C- or SPI-bus interfaces. Additional differences include industrial or extended (up to 125°C) temperature ranges and additional scratch pad RAM. State of the art leadless packages keep the application thickness to a minimum.

Sample I2C-bus Real Time Clock/Calendar Block Diagram

Sample SPI-bus Real Time Clock/Calendar Block Diagram

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	PCA8565		Real time clock/calender with I²C-bus interface

	PCF8563		Real time clock/calendar with I²C-bus interface

	PCF8583		Clock/calendar with 240 x 8-bit RAM and I²C-bus interface

	PCF8593		Low power clock/calendar with I²C-bus interface

	PCA2125		Real time clock/calendar for SPI bus

	PCF2128		Integrated RTC/TCXO/Crystal

	Your complete choice for I²C-bus peripherals Our invention, your solution to everyday design challenges © December 2007; English; Ordering code: 9397 750 15669
	Real-time clocks for low power, high temps, or scratch-pad memory NXP real-time clock/calendars with SPI or I²C-bus interfaces PCF2124, PCA2125, PCF8563, PCA8565, and PCF8583 © December 2006; English; Ordering code: 9397 750 15686