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DS12885Q Datasheet Real-time Clock

Manufacturer: Dallas Semiconductor

Overview: www.maxim-ic.com DS12885/DS12885Q/DS12885T Real-Time Clock PIN ASSIGNMENT (Top View) DS12885, 24 DIP DS12885S, 24 SO 300mil www.maxim-ic.

This datasheet includes multiple variants, all published together in a single manufacturer document.

General Description

The DS12885 real-time clock plus RAM is designed to be a direct replacement for the DS1285.

The DS12885 is identical in form, fit, and function to the DS1285, 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 configuration closely matches MC146818B and DS1285 www. DataSheet4U. com.
  • Counts seconds, minutes, hours, days, day of the week, date, month, and year with leapyear compensation valid up to 2100.
  • Binary or BCD representation of time, calendar, and alarm.
  • 12-hour or 24-hour clock with AM and PM in 12-hour mode.
  • Daylight Savings Time option.
  • Selectable between Motorola and Intel bus timing.
  • Multiplex bus.

DS12885Q Distributor