Datasheet

Extremely Accurate I
2
C-Integrated
RTC/TCXO/Crystal
Revision History (continued)
REVISION
NUMBER
REVISION
DATE
DESCRIPTION
PAGES
CHANGED
Updated the Typical Operating Circuit. 1
Removed the V
PU
parameter from the Recommended DC Operating Conditions table
and added verbiage about the pullup to the Pin Description table for INT/SQW, SDA,
and SCL.
2, 9
Added the Delta Time and Frequency vs. Temperature graph in the Typical Operating
Characteristics section.
7
Updated the Block Diagram. 8
Added the V
BAT
Operation section, improved some sections of text for the 32kHz
TCXO and Pushbutton Reset Function sections.
10
Added the register bit POR values to the register tables. 13, 14, 15
Updated the Aging Offset and Temperature Registers (11h–12h) sections. 14, 15
6 10/08
Updated the I
2
C timing diagrams (Figures 3, 4, and 5). 16, 17
7 3/10
Removed the “S” from the top mark in the Ordering Information table and the Pin
Configuration to match the packaging engineering marking specification.
1, 18
8 7/10
Updated the Typical Operating Circuit; removed the “Top Mark” column from the
Ordering Information; in the Absolute Maximum Ratings section, added the theta-JA
and theta-JC thermal resistances and Note 1, and changed the soldering temperature
to +260°C (lead(Pb)-free) and +240°C (leaded); updated the functional description of
the V
BAT
pin in the Pin Description; changed the timekeeping registers 02h, 09h, and
0Ch to “20 Hour” in Bit 5 of Figure 1; updated the BBSQW bit description in the Control
Register (0Eh) section; added the land pattern no. to the Package Information table.
1, 2, 3, 4, 6,
9, 11, 12, 13,
18
DS3231
20
Maxim Integrated 160 Rio Robles, San Jose, CA 95134 USA 1-408-601-1000
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. The parametric values (min and max limits) shown in the Electrical
Characteristics table are guaranteed. Other parametric values quoted in this data sheet are provided for guidance.
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2010 Maxim Integrated
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