Datasheet

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licenses are implied. Maxim Integrated 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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DS1347
Low-Current, SPI-Compatible
Real-Time Clock
Revision History
REVISION
NUMBER
REVISION
DATE
DESCRIPTION
PAGES
CHANGED
0 8/11 Initial release —
1 1/12 Removed all references to the DS1346 All
2 2/12
Removed the external oscillator text from the X1 pin description in the Pin
Description table
5
3 1/13
Moved Crystal Characteristics table below notes; added POR content for
clock/calendar registers.
3, 15
4 11/13 Updated CS timing in Figures 1a, 1b, 2a, and 2b; replaced Figure 3 13, 14