DS12887 - Real Time Clock

AD0 AD7 NC MOT CS AS R/ W DS RESET IRQ SQW VCC GND Multiplexed Address/Data Bus No Connection Bus Type Selection Chip Select Address Strobe Read/Write Input Data Strobe Reset Input

• Drop.
• in replacement for IBM AT computer clock/calendar Pin-compatible with the MC146818B and DS1287 Totally 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, days, day of the week, date, month, and year with leap year compensation valid up to 2100 Binary or BCD representation of time, calendar,.