PCF2127AT datasheet(53/100 Pages) PHILIPS

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PCF2127AT 데이터시트(PDF) 53 Page - NXP Semiconductors

부품명	PCF2127AT

상세설명	Accurate RTC with integrated quartz crystal for industrial applications

PDF	100 Pages

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제조업체	PHILIPS [NXP Semiconductors]

홈페이지	http://www.nxp.com

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53 / 100 page

PCF2127

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Product data sheet

Rev. 8 — 19 December 2014

53 of 100

NXP Semiconductors

PCF2127

Accurate RTC with integrated quartz crystal for industrial applications

8.12.4 Dependency between Battery switch-over and timestamp

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

[1]

Default value.

Table 81.

Battery switch-over and timestamp

BTSE

Description

[1] the battery switch-over does not affect the

timestamp registers

If a battery switch-over event occurs:

[1]

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

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