The S-35390A is a 2-wire CMOS Real-Time Clock (RTC) with low power consumption (0.25 µA) and wide voltage range (1.3 V-5.5 V), optimized to extend battery life. It incorporates a free register that can be used as user backup memory, storing data up to 1.2 V. A clock adjustment function (resolution 1 ppm), which can be combined with a temperature sensor, ensures high accuracy even in the event of thermal variations.
The S-35390A is a low-power 2-wire CMOS Real-Time Clock (RTC) offering a wide operating voltage range (1.3 V to 5.5 V), and can be powered from a variety of sources, from a main supply to a backup supply.
With a time keeping consumption of just 0.25 µA and a time keeping operating voltage of 1.1 V, battery life is considerably extended. In a system running on a backup battery, the free register integrated in the RTC can be used as a user backup memory function. The user register can store data at a supply voltage as low as 1.2 V (min.), enabling the data stored before the main power supply was cut off to be retrieved at any time as soon as the voltage is restored.