RTC and 32.768kHz Clocks

32.768kHz oscillators with a wide range of current (<1µA to<400µA) and temperature stability (up to -40 to 105°C) offer designers opportunity to match requirements closely. -40 to 85°C temperature range AT-Cut quartz solutions achieve <50ppm over -40 to 85°C; IC's with EEPROM and Tuning fork or AT-Cut crystals achieve stabilities ≤5ppm.

Series	Description	VC America Recommendations	Status	Datasheets
8592H	RTC I2 C-bus*1 Full feature/function clock IC 3ppm accuracy over temperature	VCA support programming	Active	Request
7202	32.768 kHz <±50ppm 1.6~3.63V Low 7µA current using AT-Cut crystal and operation to 125°C		Active	7202.pdf
5095	Exceptional frequency stability over wide temperature range 32.768 kHz IC, compensated by EEPROM programming to ±10ppm -10°C to 60°C or ±7ppm -40°C to 105°C	Use 7290	Active	5095.pdf
5091	32.768 kHz IC low 1 µA current, tuning fork and frequency adjust to improve accuracy and yields	tuning fork solution with excellent 25°C tolerance	Active	5091.pdf
5059H	32.768 kHz <±50ppm 1.6~5.5V 60-70µA current and operation to 125°C	Good 125°C + operation	Active	5059H.pdf
5029	32.768 kHz <±50ppm 2.25-3.6V 300-400µA current	New designs 5059H or 7202	Active	5029.pdf