DS12887A Datasheet PDF - Maxim Integrated Products Real Time Clock Specs

DS12887A - Real Time Clock

This page provides the datasheet information for the DS12887A, a member of the DS12C887 Real Time Clock family.

Datasheet Summary

Description

The DS12885, DS12887, and DS12C887 real-time clocks (RTCs) are designed to be direct replacements for the DS1285 and DS1287.

Features

Drop-In Replacement for IBM AT Computer Clock/Calendar.
RTC Counts Seconds, Minutes, Hours, Day, Date, Month, and Year with Leap Year Compensation Through 2099.
Binary or BCD Time Representation.
12-Hour or 24-Hour Clock with AM and PM in 12-Hour Mode.
Daylight Saving Time Option.
Selectable Intel or Motorola Bus Timing.
Interfaced with Software as 128 RAM Locations.
14 Bytes of Clock and Control Registers.
114 Byt.

Datasheet Details

Part number	DS12887A
Manufacturer	Maxim Integrated Products
File Size	249.70 KB
Description	Real Time Clock
Datasheet	DS12887A Datasheet
Additional preview pages of the DS12887A datasheet.

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Full PDF Text Transcription

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Rev 0; 6/05 Real-Time Clock General Description The DS12885, DS12887, and DS12C887 real-time clocks (RTCs) are designed to be direct replacements for the DS1285 and DS1287. The devices provide a real-time clock/calendar, one time-of-day alarm, three maskable interrupts with a common interrupt output, a programmable square wave, and 114 bytes of batterybacked static RAM (113 bytes in the DS12C887 and DS12C887A). The DS12887 integrates a quartz crystal and lithium energy source into a 24-pin encapsulated DIP package. The DS12C887 adds a century byte at address 32h. For all devices, the date at the end of the month is automatically adjusted for months with fewer than 31 days, including correction for leap years.

Published: Mar 7, 2006 |