The DS1337 serial real-time clock is a low-power clock/calendar with two programmable time-of-day alarms and a programmable square wave output. The address and data are transferred serially over an I2C bus. The clock/calendar provides seconds, minutes, hours, day, date, month and year information. The date at the end of the month is automatically adjusted for months with fewer than 31 days, including leap year corrections. The clock operates in 24-hour or 12-hour format with AM/PM indication.
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