IDT, Integrated Device Technology Inc 1338C-31SRI8

Description
Serial real-time clock (RTC) with ultra-low power consumption
Full binary-coded decimal (BCD) clock/calendar with 56 bytes of battery-backed Non-Volatile Static RAM
Clock/calendar provides seconds, minutes, hours, day, date, month, and year information
Operates in 24-hour or 12-hour format with AM/PM indicator
Automatic end-of-month date adjustment for months with fewer than 31 days, including leap year corrections
I²C interface capable of operating in fast I²C mode
Built-in power-sense circuitry detects power failures and automatically switches to backup supply

Features
Real-Time Clock (RTC) counts seconds, minutes, hours, day, date, month, and year with leap-year compensation valid up to 2100
56-byte battery-backed Non-Volatile RAM for data storage
Fast mode I²C serial interface
Automatic power-fail detect and switch circuitry
Programmable square-wave output
Packaged in 8-pin MSOP, 8-pin SOIC, or 16-pin SOIC (surface-mount package with an integrated crystal)
Industrial temperature range (-40°C to 85°C)

Applications
Telecom (Routers, Switches, Servers)
Handheld (GPS, Point of Sale POS Terminals)
Consumer Electronics (Set-Top Box, Digital Recording, Network Applications, Digital Photo Frames)
Office (Fax/Printers, Copiers)
Medical (Glucometer, Medicine Dispensers)
Other (Thermostats, Vending Machines, Modems, Utility Meters)