The real time clock is equipped with 8 pins.A high efficiency supply voltage should be maintained at 3.3V.-40°C is the minimum operating temperature.Operating temperatures should be below 85°C.
DS1346T+T&R Features
Be maintained at 3.3V for high efficiency.
DS1346T+T&R Applications
There are a lot of Maxim Integrated DS1346T+T&R Real Time Clocks applications.