DS12C887 - Real Time Clock

Product Overview

Dallas Semiconducotr

Datasheet Details

Part number	DS12C887
Manufacturer	Dallas Semiconducotr
File Size	219.34 KB
Description	Real Time Clock
Datasheet	DS12C887 Datasheet
Additional preview pages of the DS12C887 datasheet.

Product details

Description

AD0-AD7 - Multiplexed Address/Data Bus NC - No Connect MOT - Bus Type Selection CS - RTC Chip Select Input AS - Address Strobe - Read/Write Input R/ W DS - Data Strobe RESET - Reset Input IRQ - Interrupt Request Output SQW - Square Wave Output VCC - +5 Volt Main Supply GND - Ground t e DS12C887 24-Pin ENCAPSULATED PACKAGE U 4 .c m o NC NC IRQ RESET DS NC R/W AS CS DESCRIPTION The DS12C887 Real Time Clock plus RAM is designed as a direct upgrade replacement for the DS12887 in existing IBM

Features

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, and alarm 12.
or 24.
hour clock with AM and PM in 12.
hour.

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Published: Mar 7, 2006 |