PCF2129T View Datasheet(PDF) - NXP Semiconductors.

Part Name

Description

MFG CO.

PCF2129T

Accurate RTC with integrated quartz crystal for industrial

NXP Semiconductors. 

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NXP Semiconductors

PCF2129T

Accurate RTC with integrated quartz crystal for industrial

8.11.4 Dependency between Battery switch-over and timestamp

The timestamp function depends on the control bit BTSE in register Control_3:

Table 45. 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

[1] 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.

PCF2129T

Product data sheet

All information provided in this document is subject to legal disclaimers.

Rev. 3 — 12 February 2013

© NXP B.V. 2013. All rights reserved.

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