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Functional description – Artesyn ATCA-8310 Installation and Use (May 2014) User Manual

Page 77

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Functional Description

ATCA-8310 Installation and Use (6806800M72E)

77

4.2.1.9.1 RTC

The DS1337 is an I2C-bus-compatible real-time clock (RTC). This device contains a real-time
clock/calendar and 31 bytes of static random access memory (SRAM). The real-time clock /
calendar provides seconds, minutes, hours, day, date, month, and year information. The end of
the month date is automatically adjusted for months with fewer than 31 days, including
corrections for leap year up to the year 2100. The clock operates in either the 24hr or 12hr
format with an AM/PM indicator. The timekeeping supply current for this device is max 0.63uA.
Battery backup is provided with one battery, supplying the SPP RTC and the GPP RTC.

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