DS12887A Datasheet (Dallas)

DS12887A, Real Time Clock

AD0-AD7 NC MOT CS AS R/ W DS RESET IRQ SQW VCC RCLR GND - Multiplexed Address/Data Bus - No Connection - Bus Type Selection - Chip Select - Address Strobe - Read/Write Input - Data Strobe - Reset Input - Interrupt Request Output - Square Wave Output - +5 Volt Supply - RAM Clear - Ground DESCRIP

DS12887A Features

* Drop

* in replacement for IBM AT computer clock/calendar

* Pin compatible with the MC146818B and DS1287A

* Totally nonvolatile with over 10 years of operation in the absence of power

* Self

* contained subsystem includes lithium, quartz, and support circuitry

* Coun