RENESAS 1338B-18DVGI8

The 1338 is a serial real-time clock (RTC) device that consumes ultra-low power and provides a full binary-coded decimal (BCD) clock/calendar with 56 bytes of battery backed Non-Volatile Static RAM. The clock/calendar provides seconds, minutes, hours, day, date, month, and year information. The clock operates in either the 24-hour or 12-hour format with AM/PM indicator. The end of the month date is automatically adjusted for months with fewer than 31 days, including corrections for leap year. Access to the clock/calendar registers is provided by an I²C interface capable of operating in fast I²C mode. Built-in Power-sense circuitry detects power failures and automatically switches to the backup supply, maintaining time and date operation.

• 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 )

• 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)