The DS1338 serial real-time clock (RTC) is a low- power, full binary-coded decimal (BCD) clock/calendar plus 56 bytes of NV SRAM

BENEFITS AND FEATURES
• Completely Manages All Timekeeping
Functions
o RTC Counts Seconds, Minutes, Hours,
Date of the Month, Month, Day of the
Week, and Year with Leap-Year
Compensation Valid Up to 2100
o 56-Byte, Battery-Backed, GeneralPurpose RAM with Unlimited Writes
o Programmable Square-Wave Output
Signal
• Surface-Mount Package with an Integrated
Crystal (DS1338C) Saves Additional Space
and Simplifies Design
• Interfaces with Most Microcontrollers
o I2C Serial Interface