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PCA9502 датащи(PDF) 25 Page - NXP Semiconductors |
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PCA9502 датащи(HTML) 25 Page - NXP Semiconductors |
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25 / 25 page ![]() NXP Semiconductors PCA9502 8-bit I/O expander with I2C-bus/SPI interface © NXP B.V. 2006. 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: 13 October 2006 Document identifier: PCA9502_3 Please be aware that important notices concerning this document and the product(s) described herein, have been included in section ‘Legal information’. 21. Contents 1 General description . . . . . . . . . . . . . . . . . . . . . . 1 2 Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 2.1 General features . . . . . . . . . . . . . . . . . . . . . . . . 1 2.2 I2C-bus features . . . . . . . . . . . . . . . . . . . . . . . . 1 2.3 SPI features . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 3 Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 4 Ordering information . . . . . . . . . . . . . . . . . . . . . 2 5 Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . 2 6 Pinning information . . . . . . . . . . . . . . . . . . . . . . 3 6.1 Pinning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 6.2 Pin description . . . . . . . . . . . . . . . . . . . . . . . . . 3 7 Functional description . . . . . . . . . . . . . . . . . . . 4 7.1 Hardware reset, Power-On Reset (POR) and software reset . . . . . . . . . . . . . . . . . . . . . . . . . . 4 7.2 Interrupts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 8 Register descriptions . . . . . . . . . . . . . . . . . . . . 5 8.1 Programmable I/O pins Direction register (IODir) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 8.2 Programmable I/O pins State register (IOState) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 8.3 I/O Interrupt Enable register (IOIntEna) . . . . . . 6 8.4 I/O Control register (IOControl). . . . . . . . . . . . . 6 9I2C-bus operation . . . . . . . . . . . . . . . . . . . . . . . . 7 9.1 Data transfers . . . . . . . . . . . . . . . . . . . . . . . . . . 7 9.2 Addressing and transfer formats. . . . . . . . . . . . 8 9.3 Addressing . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 9.4 Use of sub-addresses. . . . . . . . . . . . . . . . . . . 11 10 SPI operation . . . . . . . . . . . . . . . . . . . . . . . . . . 13 11 Limiting values. . . . . . . . . . . . . . . . . . . . . . . . . 13 12 Static characteristics. . . . . . . . . . . . . . . . . . . . 14 13 Dynamic characteristics . . . . . . . . . . . . . . . . . 15 14 Package outline . . . . . . . . . . . . . . . . . . . . . . . . 19 15 Handling information. . . . . . . . . . . . . . . . . . . . 20 16 Soldering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 16.1 Introduction to soldering . . . . . . . . . . . . . . . . . 20 16.2 Wave and reflow soldering . . . . . . . . . . . . . . . 20 16.3 Wave soldering . . . . . . . . . . . . . . . . . . . . . . . . 20 16.4 Reflow soldering . . . . . . . . . . . . . . . . . . . . . . . 21 17 Abbreviations . . . . . . . . . . . . . . . . . . . . . . . . . . 22 18 Revision history . . . . . . . . . . . . . . . . . . . . . . . . 23 19 Legal information. . . . . . . . . . . . . . . . . . . . . . . 24 19.1 Data sheet status . . . . . . . . . . . . . . . . . . . . . . 24 19.2 Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 19.3 Disclaimers . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 19.4 Trademarks . . . . . . . . . . . . . . . . . . . . . . . . . . 24 20 Contact information . . . . . . . . . . . . . . . . . . . . 24 21 Contents. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 |
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