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
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