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Manages all timekeeping functions: real-time clock counts seconds, minutes, hours, date of the month, month, day of the week, and year with leap year.
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31 x 8 battery-backed general-purpose RAM
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Simple serial port interfaces to most microcontrollers: simple 3-wire interface
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TTL compatible: VCC = 5 V
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Single-byte or multiple-byte (burst mode) data transfer for reading or writing of the clock or RAM data.
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Low power operation extends battery backup run time: 2.0 V to 5.5 V full operation.
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Uses less than 300 nA at 2.0 V
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Temperature range: 0°C to +70°C