DS1287 Real Time Clock

DS1287 Features

• Drop in Replacement for IBM AT Computer Clock
• Pin Compatible to the MC146818A
• Nonvolatile with over 10 years of operation in the absence of power
• Self-contained subsystem includes lithium, quartz, and support circuitry
• Counts seconds, minutes, hours, day of the week, date, month, and year with leap year compensation
• 12- or 24-hour clock with AM and PM in 12-hour mode