DS12B887 Datasheet (Dallas Semiconductor)

DS12B887, Real Time Clock

AD0-AD7 NC CS AS R/W DS IRQ SQW VCC GND RCLR * * * * * * * * * * * Multiplexed Address/Data Bus No Connection Chip Select Address Strobe Read/Write Input Data Strobe Interrupt Request Output Square Wave Output +5

DS12B887 Features

* www.DataSheet4U.com PIN ASSIGNMENT NC NC NC AD0 AD1 AD2 AD3 AD4 AD5 AD6 AD7 GND 1 2 3 4 5 6 7 8 9 10 11 12 24 23 22 21 20 19 18 17 16 15 14 13 VCC SQW NC RCLR NC IRQ NC DS NC R/W AS CS

* Drop-in replacement for IBM AT computer clock/calendar

* Pin compatible with the MC146818B and