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PCA8575 查看數據表(PDF) - Philips Electronics

零件编号
产品描述 (功能)
生产厂家
PCA8575 Datasheet PDF : 30 Pages
First Prev 21 22 23 24 25 26 27 28 29 30
NXP Semiconductors
PCA8575
Remote 16-bit I/O expander for I2C-bus with interrupt
21. Contents
1
General description . . . . . . . . . . . . . . . . . . . . . . 1 20
2
Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 21
3
Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
4
Ordering information . . . . . . . . . . . . . . . . . . . . . 2
5
Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . 2
6
Pinning information . . . . . . . . . . . . . . . . . . . . . . 3
6.1
Pinning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
6.2
Pin description . . . . . . . . . . . . . . . . . . . . . . . . . 5
7
Functional description . . . . . . . . . . . . . . . . . . . 6
7.1
7.1.1
Device address . . . . . . . . . . . . . . . . . . . . . . . . . 6
Address map. . . . . . . . . . . . . . . . . . . . . . . . . . . 6
8
I/O programming . . . . . . . . . . . . . . . . . . . . . . . . 7
8.1
Quasi-bidirectional I/O architecture . . . . . . . . . 7
8.2
Writing to the port (Output mode) . . . . . . . . . . . 7
8.3
Reading from a port (Input mode) . . . . . . . . . . 8
8.4
Power-on reset . . . . . . . . . . . . . . . . . . . . . . . . 11
8.5
Interrupt output (INT) . . . . . . . . . . . . . . . . . . . 11
9
Characteristics of the I2C-bus. . . . . . . . . . . . . 12
9.1
9.1.1
9.2
9.3
Bit transfer . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
START and STOP conditions . . . . . . . . . . . . . 12
System configuration . . . . . . . . . . . . . . . . . . . 12
Acknowledge . . . . . . . . . . . . . . . . . . . . . . . . . 13
10
Application design-in information . . . . . . . . . 14
10.1
Bidirectional I/O expander applications . . . . . 14
10.2
High current-drive load applications . . . . . . . . 14
10.3
Differences between the PCA8575 and the
PCF8575. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
11
Limiting values. . . . . . . . . . . . . . . . . . . . . . . . . 15
12
Static characteristics. . . . . . . . . . . . . . . . . . . . 16
13
Dynamic characteristics . . . . . . . . . . . . . . . . . 17
14
Package outline . . . . . . . . . . . . . . . . . . . . . . . . 19
15
Handling information. . . . . . . . . . . . . . . . . . . . 25
16
Soldering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
16.1
Introduction to soldering . . . . . . . . . . . . . . . . . 25
16.2
Wave and reflow soldering . . . . . . . . . . . . . . . 25
16.3
Wave soldering . . . . . . . . . . . . . . . . . . . . . . . . 25
16.4
Reflow soldering . . . . . . . . . . . . . . . . . . . . . . . 26
17
Abbreviations . . . . . . . . . . . . . . . . . . . . . . . . . . 27
18
Revision history . . . . . . . . . . . . . . . . . . . . . . . . 28
19
Legal information. . . . . . . . . . . . . . . . . . . . . . . 29
19.1
Data sheet status . . . . . . . . . . . . . . . . . . . . . . 29
19.2
Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
19.3
Disclaimers . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
19.4
Trademarks . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Contact information . . . . . . . . . . . . . . . . . . . . 29
Contents. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Please be aware that important notices concerning this document and the product(s)
described herein, have been included in section ‘Legal information’.
© 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: 30 November 2006
Document identifier: PCA8575_1

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