PT7C43390 Datasheet (Pericom Semiconductor)

PT7C43390, Real-time Clock Module

The PT7C43390 is a CMOS I2C-bus real-time clock IC, which operates with the very low current consumption and in the wide range of operation voltage.

The operation voltage is 1.35 V to 5.5 V so that the RTC can be used for various power supplies from main supply to backup battery.

In the system which

PT7C43390 Features

* Low current consumption: 0.3µA typ. (VDD=3.0V, TA = 25°C)

* Wide operating voltage range: 1.35 to 5.5 V

* Minimum time keeping operation voltage: 1.25 V

* Built-in clock adjustment function

* Built-in free user register

* 2-wire (I2C-bus) CPU interface

* Built-in alarm