PCF2127TSLASH2Y datasheet(36/100 Pages) PHILIPS

No. de pieza	PCF2127T/2Y

Descripción Electrónicos	Accurate RTC with integrated quartz crystal for industrial applications

PDF	100 Pages

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Fabricante Electrónico	PHILIPS [NXP Semiconductors]

Página de inicio	http://www.nxp.com

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36 / 100 page

PCF2127

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Product data sheet

Rev. 8 — 19 December 2014

36 of 100

NXP Semiconductors

PCF2127

Accurate RTC with integrated quartz crystal for industrial applications

As a consequence of this method, it is very important to make a read or write access in

one go. That is, setting or reading seconds through to years should be made in one single

access. Failing to comply with this method could result in the time becoming corrupted.

As an example, if the time (seconds through to hours) is set in one access and then in a

second access the date is set, it is possible that the time may increment between the two

accesses. A similar problem exists when reading. A roll-over may occur between reads

thus giving the minutes from one moment and the hours from the next. Therefore it is

advised to read all time and date registers in one access.

Fig 20. Access time for read/write operations

PCF2127T/2Y Datasheet(PDF) 36 Page - NXP Semiconductors