Real-Time Clocks (RTCs)

DATA SHEETS
Part Number	Description	Key Advantages
DS3232	Extremely Accurate I²C RTC with Integrated Crystal and SRAM
DS1390, DS1391, DS1392, ...	Low-Voltage SPI/3-Wire RTCs with Trickle Charger	Low-Voltage SPI/3-Wire RTCs with Trickle Charger have the Broadest Feature Set and the Smallest Footprint in Their Class
DS3234	Extremely Accurate SPI Bus RTC with Integrated Crystal and SRAM	Completely Integrated, Accurate Timing Solution Provides Better than ±2.0 Minutes per Year Accuracy Over the Industrial Temperature Range and Requires No User Calibration
DS1337, DS1337C	I²C Serial Real-Time Clock	Industry's Smallest I²C RTC with Two Time-of-Day Alarms