Specifications

DS12885/DS12887/DS12887A/DS12C887/DS12C887A

Real-Time Clocks

Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are

implied. Maxim reserves the right to change the circuitry and specifications without notice at any time.

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is a registered trademark of Maxim Integrated Products, Inc.

Quijano

Revision History

REVISION

NUMBER

REVISION

DATE

DESCRIPTION

PAGES

CHANGED

0 6/05 Initial release of combined data sheet —

1 4/06

Corrected the Intel Bus Write Timing, Intel Bus Read Timing,

IRQ

Release Delay

Timing, Power-Up/Down Timing, and Functional Diagram diagrams; added the

Handling, PC Board Layout, and Assembly section.

4, 5, 7, 20

2 5/06

Corrected the Intel Bus Write Timing diagram; added PLCC pin description

information; changed pin 16 from N.C. to GND for the SO and PDIP packages.

4, 8, 9, 10, 20

3 2/07

Corrected the Intel Bus Write Timing diagram; updated the Ordering Information;

added the Package Information table; removed the package drawings.

4, 20, 22–27

4 4/10

Updated the storage temperature ranges, added the lead temperature, and updated

the soldering temperature for all packages in the Absolute Maximum Ratings;

removed leaded parts from the Ordering Information table.

2, 21