In addition to electronic frequency tuning, the RTCs can also be programmed to generate an interrupt every 30 or 60 seconds, communicating via a Fast-mode I2C-bus operating up to 400 kHz. Measuring at 2.6 x 2.6 x 0.5 mm, the PCF85063ATL and PCF85063BTL are similarly tiny, with additional features including an alarm facility and a countdown timer controlled via an I2C or SPI bus. Ideal for battery-powered operation (IDD ~0.22 μA), the PCF85063 can be used for a wide range of timing functions in compact mobile devices.
“By offering the key features you’d expect from a state-of-the-art timing reference in a remarkably tiny leadless package, the PCF85063 real-time clock family helps to further reduce PCB size for space-constrained mobile, computing and imaging devices, as well as home and industrial automation systems,” said Markus Hintermann, international product marketing manager, Interface Products, NXP Semiconductors. “Combining a sub-threshold low-power oscillator with leading-edge logic density, the very tiny RTCs also enable operation across a large voltage range from 0.9 to 5.5 V.”
Pricing and Availability
The PCF85063 family of real-time clocks is in volume production and available immediately. Indicative pricing for the PCF85063TP is US $0.26 per piece in 10k quantities.