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DS1307 64 X 8 Serial Real Time Clock
Real time clock counts seconds, minutes,
hours, date of the month, month, day of the
week, and year with leap year compensation valid up to 2100 56 byte nonvolatile RAM for data storage 2-wire serial interface Programmable squarewave output signal Automatic power-fail detect and switch circuitry Consumes less than 500 nA in battery backup
mode with oscillator running Optional industrial temperature range
-40°C to +85°C Available in 8-pin DIP or SOIC Recognized by Underwriters Laboratory
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