DS1394U-33+T&R【PDF 19/26 页】IC RTC SPI 3WIRE W/CHRGR 10-MSOP

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Sheet目录1993

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 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.

________________________________Maxim Integrated 160 Rio Robles, San Jose, CA 95134 USA 1-408-601-1000

2012 Maxim Integrated Products, Inc.

Maxim Integrated and the Maxim Integrated logo are trademarks of Maxim Integrated Products, Inc.

DS1390–DS1394

Low-Voltage SPI/3-Wire RTCs with

Trickle Charger

Revision History

REVISION

NUMBER

REVISION

DATE

DESCRIPTION

PAGES

CHANGED

7/04

Initial release.

—

Added text to the General Description section to indicate that the bus interface is disabled

when the part switches to VBACKUP; replaced Ordering Information table with lead-free

packages.

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

Changed all references of VBAT to VBACKUP.

8, 10

1/07

Replaced the Operation section with the Power Control section and added new Table 1.

11, 12

Added the DS1394.

All

8/08

In the Address Map section, added the description on how to avoid misreads of the time

registers.

8/09

Added DS1390U-33/V+ to the Ordering Information table.

10/12

Updated Ordering Information

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