DS12R885_10 Datasheet, PDF (23/23 Pages) Maxim Integrated Products – RTCs with Constant-Voltage Trickle Charger

RTCs with Constant-Voltage Trickle Charger
Revision History
REVISION REVISION
NUMBER DATE
DESCRIPTION
0
4/04 Initial release of DS12R885
1
4/04 Added DS12R887 and DS12CR887 to data sheet
2
12/04 Initial release of DS12R887
Corrected Intel Bus Write Timing, Intel Bus Read Timing, IRQ Release Delay Timing,
3
4/06 Power-Up/Down Timing, and Functional Diagram diagrams; added the EDIP paragraph
to the Handling, PC Board Layout, and Assembly section.
4
5/06 Changed pin 16 from N.C. to GND for the SO package.
Updated 114 bytes bullet in the Features section; updated the Ordering Information;
5
2/07
corrected the Intel Bus Write Timing diagram; added a note about how the missing
V_BACKUP pin on the DS12CR887 and DS12R887 is internally connected to a lithium
cell; added the Package Information table.
Updated the storage temperature ranges, added the lead temperature, and updated the
6
4/10 soldering temperature for all packages in the Absolute Maximum Ratings; removed
the DS12R885 and DS12CR887 leaded parts from the Ordering Information table.
PAGES
CHANGED
—
All
All
5, 6, 7, 21
10, 21
1, 6, 11, 22
2, 22
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.
Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 ____________________ 23
© 2010 Maxim Integrated Products
Maxim is a registered trademark of Maxim Integrated Products, Inc.
is a registered trademark of Maxim Integrated Products, Inc.