NXP Semiconductors has announced the availability of the industry's best low-power performance real-time clock (RTC) chips with SPI bus interface, the PCF2123. Operating at a current of less than 100 NanoAmperes (0.15 μW) on a 1.5V power supply, the real-time clock comes in a tiny 3 × 3 × 1mm package, making it ideal for battery operation and handheld applications to keep track of time, when the equipment is powered down. The small size and low-power requirement of the PCF2123 make it a good choice for applications including home-use medical devices such as blood pressure monitors, portable phones, PDAs and similar compact portable electronics products where space and power are critical, while the variety of features makes it suitable for industrial systems as well as white goods.
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