DS12CR887-33+ Maxim Integrated Products, DS12CR887-33+ Datasheet - Page 23

• Manufacturer Part Number: DS12CR887-33+
• Description: IC RTC W/RAM 128 BYTE 24-EDIP
• Manufacturer: Maxim Integrated Products
• Type: Clock/Calendar/NVSRAMr

Specifications of DS12CR887-33+

• Memory Size: 114B
• Time Format: HH:MM:SS (12/24 hr)
• Date Format: YY-MM-DD-dd
• Interface: Parallel
• Voltage - Supply: 2.97 V ~ 3.63 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Through Hole
• Package / Case: 24-DIP (600 mil) Module
• Function: Clock/Calendar
• Rtc Memory Size: 114 Byte
• Supply Voltage (max): 3.63 V
• Supply Voltage (min): 2.97 V
• Maximum Operating Temperature: + 85 C
• Minimum Operating Temperature: - 40 C
• Mounting Style: Through Hole
• Rtc Bus Interface: Multiplexed
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

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