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PCA2000UAC датащи(PDF) 30 Page - NXP Semiconductors |
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PCA2000UAC датащи(HTML) 30 Page - NXP Semiconductors |
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30 / 30 page ![]() NXP Semiconductors PCA2000; PCA2001 32 kHz watch circuit with programmable adaptive motor pulse © NXP B.V. 2010. All rights reserved. For more information, please visit: http://www.nxp.com For sales office addresses, please send an email to: salesaddresses@nxp.com Date of release: 23 August 2010 Document identifier: PCA2000_2001 Please be aware that important notices concerning this document and the product(s) described herein, have been included in section ‘Legal information’. 19. Contents 1 General description . . . . . . . . . . . . . . . . . . . . . . 1 2 Features and benefits . . . . . . . . . . . . . . . . . . . . 1 3 Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 4 Ordering information . . . . . . . . . . . . . . . . . . . . . 2 5 Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . 3 6 Pinning information . . . . . . . . . . . . . . . . . . . . . . 3 6.1 Pinning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 6.2 Pin description . . . . . . . . . . . . . . . . . . . . . . . . . 4 7 Functional description . . . . . . . . . . . . . . . . . . . 4 7.1 Motor pulse . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 7.2 Step detection . . . . . . . . . . . . . . . . . . . . . . . . . . 6 7.3 Time calibration . . . . . . . . . . . . . . . . . . . . . . . . 7 7.4 Reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 7.5 Programming possibilities. . . . . . . . . . . . . . . . . 8 7.6 Programming procedure . . . . . . . . . . . . . . . . . 11 7.7 Programming the memory cells . . . . . . . . . . . 11 7.8 Checking memory content . . . . . . . . . . . . . . . 13 7.9 Frequency tuning of assembled watch . . . . . . 14 7.10 Measurement of oscillator frequency and inhibition time . . . . . . . . . . . . . . . . . . . . . . . . . 14 7.11 Customer testing . . . . . . . . . . . . . . . . . . . . . . 15 7.12 EOL of battery . . . . . . . . . . . . . . . . . . . . . . . . 15 8 Limiting values. . . . . . . . . . . . . . . . . . . . . . . . . 16 9 Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . 17 10 OTP programming characteristics . . . . . . . . . 18 11 Bare die outline . . . . . . . . . . . . . . . . . . . . . . . . 19 12 Packing information . . . . . . . . . . . . . . . . . . . . 21 12.1 Tray information . . . . . . . . . . . . . . . . . . . . . . . 21 12.2 Wafer information . . . . . . . . . . . . . . . . . . . . . . 23 13 Soldering of WLCSP packages. . . . . . . . . . . . 24 13.1 Introduction to soldering WLCSP packages . . 24 13.2 Board mounting . . . . . . . . . . . . . . . . . . . . . . . 24 13.3 Reflow soldering . . . . . . . . . . . . . . . . . . . . . . . 24 13.3.1 Stand off . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 13.3.2 Quality of solder joint . . . . . . . . . . . . . . . . . . . 25 13.3.3 Rework . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 13.3.4 Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26 14 Abbreviations . . . . . . . . . . . . . . . . . . . . . . . . . . 26 15 References . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26 16 Revision history . . . . . . . . . . . . . . . . . . . . . . . . 27 17 Legal information. . . . . . . . . . . . . . . . . . . . . . . 28 17.1 Data sheet status . . . . . . . . . . . . . . . . . . . . . . 28 17.2 Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28 17.3 Disclaimers . . . . . . . . . . . . . . . . . . . . . . . . . . . 28 17.4 Trademarks. . . . . . . . . . . . . . . . . . . . . . . . . . . 29 18 Contact information . . . . . . . . . . . . . . . . . . . . 29 19 Contents. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 |
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