PCF2129A Datasheet, PDF (36/68 Pages) NXP Semiconductors – Integrated RTC, TCXO and quartz crystal

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