Datasheet

REVISION
NUMBER
REVISION
DATE
DESCRIPTION
PAGES
CHANGED
0 7/04 Initial release. —
1 1/07
Added text to the General Description section to indicate that the bus interface is
disabled when the part switches to V
BACKUP
; replaced Ordering Information table with
lead-free packages.
1
Added 0MHz (min) spec for SCLK frequency for SPI, 3-wire AC timing. 3, 5
Added the “High Impedance” label for DOUT to Figure 1 and added DOUT trace to
Figure 2.
4
Changed all references of V
BAT
to V
BACKUP
. 8, 10
Replaced the Operation section with the Power Control section and added new Table 1. 11, 12
2 8/08
Added the DS1394. All
In the Address Map section, added the description on how to avoid misreads of the time
registers.
15
3 8/09 Added DS1390U-33/V+ to the Ordering Information table. 1
4 10/12 Updated Ordering Information 1
5 7/19 Updated Special Purpose Registers section 18
Maxim Integrated cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim Integrated product. No circuit patent licenses
are implied. Maxim Integrated reserves the right to change the circuitry and specications 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.
Maxim Integrated and the Maxim Integrated logo are trademarks of Maxim Integrated Products, Inc.
©
2019 Maxim Integrated Products, Inc. │ 27
DS1390–DS1394 Low-Voltage SPI/3-Wire RTCs
with Trickle Charger
Revision History
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