pcf2129a NXP Semiconductors, pcf2129a Datasheet - Page 36

• Manufacturer Part Number: pcf2129a
• Description: Integrated Rtc, Tcxo And Quartz Crystal
• Manufacturer: NXP Semiconductors

NXP Semiconductors
PCF2129A_1
Product data sheet
8.11.4 Dependency between Battery switch-over and timestamp
The timestamp function depends on the control bit BTSE in register Control_3:
Table 44.
[1]
BTSE BF
0
1
Default value.
-
0
1
Battery switch-over and timestamp
[1]
Description
the battery switch-over does not affect the timestamp registers
If a battery switch-over event occurs:
the timestamp registers store the time and date when the switch-over occurs;
after this event occurred BF is set logic 1
the timestamp registers are not modified;
in this condition subsequent battery switch-over events or falling edges on pin
TS are not registered
Rev. 01 — 13 January 2010
Integrated RTC, TCXO and quartz crystal
PCF2129A
© NXP B.V. 2010. All rights reserved.
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