General Description
The F15353 which is a low current consumption 2- wire CMOS real-time clock operates under 1.3V to 3.6V. The current consumption is only 0.55uA and operation voltage is 1.1V as time keeping. In a system that operates on a backup battery, the free register incorporated in the real-time clock can be used for the user backup memory function. The user register can hold data on a supply voltage as low as 1.1 V (min.), so the data stored in the register before the main power supply was removed and can be recalled any time after the power is reconnected.

FEATURE
◆ Low Current Consumption: 0.55uA, Typical (VDD = 3.0V, Ta = 25°C)
◆ Operate Voltage Range: 1.3 to 3.6V
◆ Minimum Time Keeping Operation Voltage: 1.1V
◆ Built-in Clock Adjustment Function
◆ Built-in Free User Register
◆ Built-in Alarm Interrupt
◆ Built-in Flag Generator at Power down or Power on
◆ Built-in Constant Voltage Circuit
◆ Built-in 32KHz Crystal Oscillator Circuit (Cd Built-in, Cq External)
◆ Auto Calendar up to the Year 2099, Automatic Leap Year Calculation Function
◆ I2C Interface
◆ Powered by 3.3VCC and packaged in SOP-8 and TSSOP-8