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NXP Semiconductors Electronic Components Datasheet

AN11247 Datasheet

Improved timekeeping accuracy

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AN11247
Improved timekeeping accuracy with PCF85063, PCF8523
and PCF2123 using an external temperature sensor
Rev. 1 — 17 December 2012
Application note
Document information
Info Content
Keywords
PCF85063, PCF8523, PCF2123, RTC, accuracy, timekeeping,
temperature sensor, temperature compensation, crystal, 32.768 kHz
Abstract
The temperature dependent characteristics of quartz crystals prevent
time keeping also with state-of-the-art real time clocks from being highly
accurate over a wide temperature range, unless corrective measures are
implemented. This application note describes how the use of an external
temperature sensor,http://www.DataSheet4U.net/ placed in a location which will be at or near the same
temperature as the quartz crystal attached to the RTC, can improve
accuracy considerably. If the application is already using a temperature
sensor for some reason, only some extra firmware is needed without
adding to the Bill Of Material (BOM).
datasheet pdf - http://www.DataSheet4U.net/


NXP Semiconductors Electronic Components Datasheet

AN11247 Datasheet

Improved timekeeping accuracy

No Preview Available !

NXP Semiconductors
AN11247
Improved timekeeping accuracy using an external temperature sensor
Revision history
Rev Date
01 20121217
Description
Initial version, first release
http://www.DataSheet4U.net/
Contact information
For additional information, please visit: http://www.nxp.com
For sales office addresses, please send an email to: salesaddresses@nxp.com
AN11247_1
Application note
All information provided in this document is subject to legal disclaimers.
Rev. 1 — 17 December 2012
© NXP B.V. 2012. All rights reserved.
2 of 16
datasheet pdf - http://www.DataSheet4U.net/


Part Number AN11247
Description Improved timekeeping accuracy
Maker NXP Semiconductors
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