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DS12887 Datasheet Real Time Clock

Manufacturer: Dallas

Overview: DS12887 Real Time Clock www.dalsemi.com.

Datasheet Details

Part number DS12887
Manufacturer Dallas
File Size 584.91 KB
Description Real Time Clock
Datasheet DS12887_Dallas.pdf

General Description

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 – Interrupt Request Output – Square Wave Output – +5 Volt Supply – Ground DESCRIPTION The DS12887 Real Time Clock plus RAM is designed to be a direct replacement for the DS1287.

The DS12887 is identical in form, fit, and function to the DS1287, and has an additional 64 bytes of general purpose RAM.

Access to this additional RAM space is determined by the logic level presented on AD6 during the address portion of an access cycle.

Key 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,.

DS12887 Distributor