DS1390_09 Datasheet, PDF (26/26 Pages) Maxim Integrated Products – Low-Voltage SPI/3-Wire RTCs with Trickle Charger

Low-Voltage SPI/3-Wire RTCs with
Trickle Charger
Revision History
REVISION REVISION
NUMBER DATE
DESCRIPTION
0
7/04 Initial release.
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.
Added 0MHz (min) spec for SCLK frequency for SPI, 3-wire AC timing.
1
1/07
Added the “High Impedance” label for DOUT to Figure 1 and added DOUT trace to
Figure 2.
Changed all references of V_BAT to V_BACKUP.
Replaced the Operation section with the Power Control section and added new Table 1.
Added the DS1394.
2
8/08
In the Address Map section, added the description on how to avoid misreads of the
time registers.
3
8/09 Added DS1390U-33/V+ to the Ordering Information table.
PAGES
CHANGED
—
1
3, 5
4
8, 10
11, 12
All
15
1
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