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PCF8593T датащи(PDF) 35 Page - NXP Semiconductors |
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PCF8593T датащи(HTML) 35 Page - NXP Semiconductors |
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35 / 35 page ![]() NXP Semiconductors PCF8593 Low power clock and calendar © 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: 6 October 2010 Document identifier: PCF8593 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 Ordering information . . . . . . . . . . . . . . . . . . . . . 1 4 Marking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 5 Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . 2 6 Pinning information . . . . . . . . . . . . . . . . . . . . . . 3 6.1 Pinning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 6.2 Pin description . . . . . . . . . . . . . . . . . . . . . . . . . 3 7 Functional description . . . . . . . . . . . . . . . . . . . 4 7.1 Counter function modes . . . . . . . . . . . . . . . . . . 4 7.2 Alarm function modes . . . . . . . . . . . . . . . . . . . . 4 7.3 Control and status register . . . . . . . . . . . . . . . . 5 7.4 Counter registers . . . . . . . . . . . . . . . . . . . . . . . 6 7.5 Alarm control register . . . . . . . . . . . . . . . . . . . . 8 7.6 Alarm registers . . . . . . . . . . . . . . . . . . . . . . . . . 9 7.7 Timer. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 7.8 Event counter mode . . . . . . . . . . . . . . . . . . . . 11 7.9 Interrupt control . . . . . . . . . . . . . . . . . . . . . . . 12 7.10 Oscillator and divider . . . . . . . . . . . . . . . . . . . 12 7.10.1 Designing . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 7.11 Initialization . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 8 Characteristics of the I2C-bus . . . . . . . . . . . . 14 8.1 Characteristics . . . . . . . . . . . . . . . . . . . . . . . . 14 8.1.1 Bit transfer . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 8.1.2 Start and stop conditions . . . . . . . . . . . . . . . . 14 8.1.3 System configuration . . . . . . . . . . . . . . . . . . . 14 8.1.4 Acknowledge . . . . . . . . . . . . . . . . . . . . . . . . . 15 8.2 I2C-bus protocol . . . . . . . . . . . . . . . . . . . . . . . 16 8.2.1 Addressing . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 8.2.2 Clock and calendar READ or WRITE cycles . 16 9 Limiting values. . . . . . . . . . . . . . . . . . . . . . . . . 18 10 Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . 19 10.1 Static characteristics . . . . . . . . . . . . . . . . . . . . 19 10.2 Dynamic characteristics . . . . . . . . . . . . . . . . . 21 11 Application information. . . . . . . . . . . . . . . . . . 23 11.1 Oscillator frequency adjustment . . . . . . . . . . . 23 11.1.1 Method 1: Fixed OSCI capacitor. . . . . . . . . . . 23 11.1.2 Method 2: OSCI trimmer. . . . . . . . . . . . . . . . . 23 11.1.3 Method 3: Direct measurement . . . . . . . . . . . 23 12 Package outline . . . . . . . . . . . . . . . . . . . . . . . . 25 13 Soldering of SMD packages . . . . . . . . . . . . . . 27 13.1 Introduction to soldering . . . . . . . . . . . . . . . . . 27 13.2 Wave and reflow soldering . . . . . . . . . . . . . . . 27 13.3 Wave soldering . . . . . . . . . . . . . . . . . . . . . . . . 27 13.4 Reflow soldering . . . . . . . . . . . . . . . . . . . . . . . 28 14 Abbreviations . . . . . . . . . . . . . . . . . . . . . . . . . 30 15 References. . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 16 Revision history . . . . . . . . . . . . . . . . . . . . . . . 32 17 Legal information . . . . . . . . . . . . . . . . . . . . . . 33 17.1 Data sheet status . . . . . . . . . . . . . . . . . . . . . . 33 17.2 Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . 33 17.3 Disclaimers . . . . . . . . . . . . . . . . . . . . . . . . . . 33 17.4 Trademarks . . . . . . . . . . . . . . . . . . . . . . . . . . 34 18 Contact information . . . . . . . . . . . . . . . . . . . . 34 19 Contents. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35 |
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