Datasheet

NXP Semiconductors
PCAL9539A
16-bit I
2
C-bus and SMBus low power I/O port with interrupt and reset
© NXP B.V. 2012. All rights reserved.
For more information, please visit: http://www.nxp.com
For sales office addresses, please send an email to: [e-mail]
Date of release: 3 October 2012
Document identifier: PCAL9539A
Please be aware that important notices concerning this document and the product(s)
described herein, have been included in section ‘Legal information’.
23. Contents
1 General description . . . . . . . . . . . . . . . . . . . . . . 1
2 Features and benefits . . . . . . . . . . . . . . . . . . . . 2
2.1 Agile I/O features . . . . . . . . . . . . . . . . . . . . . . . 2
3 Ordering information. . . . . . . . . . . . . . . . . . . . . 3
3.1 Ordering options . . . . . . . . . . . . . . . . . . . . . . . . 3
4 Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . 3
5 Pinning information. . . . . . . . . . . . . . . . . . . . . . 4
5.1 Pinning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
5.2 Pin description . . . . . . . . . . . . . . . . . . . . . . . . . 4
6 Functional description . . . . . . . . . . . . . . . . . . . 5
6.1 Device address. . . . . . . . . . . . . . . . . . . . . . . . . 5
6.2 Registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
6.2.1 Pointer register and command byte . . . . . . . . . 5
6.2.2 Input port register pair (00h, 01h) . . . . . . . . . . . 7
6.2.3 Output port register pair (02h, 03h) . . . . . . . . . 7
6.2.4 Polarity inversion register pair (04h, 05h). . . . . 8
6.2.5 Configuration register pair (06h, 07h). . . . . . . . 8
6.2.6 Output drive strength register pairs
(40h, 41h, 42h, 43h) . . . . . . . . . . . . . . . . . . . . . 9
6.2.7 Input latch register pair (44h, 45h) . . . . . . . . . . 9
6.2.8 Pull-up/pull-down enable register pair
(46h, 47h) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
6.2.9 Pull-up/pull-down selection register pair
(48h, 49h) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
6.2.10 Interrupt mask register pair (4Ah, 4Bh). . . . . . 11
6.2.11 Interrupt status register pair (4Ch, 4Dh) . . . . . 12
6.2.12 Output port configuration register (4Fh) . . . . . 12
6.3 I/O port . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
6.4 Power-on reset . . . . . . . . . . . . . . . . . . . . . . . . 14
6.5 RESET
input. . . . . . . . . . . . . . . . . . . . . . . . . . 14
6.6 Interrupt output . . . . . . . . . . . . . . . . . . . . . . . . 14
7 Bus transactions . . . . . . . . . . . . . . . . . . . . . . . 15
7.1 Writing to the port registers. . . . . . . . . . . . . . . 15
7.2 Reading the port registers . . . . . . . . . . . . . . . 17
8 Application design-in information . . . . . . . . . 21
8.1 Minimizing I
DD
when the I/Os are used to
control LEDs. . . . . . . . . . . . . . . . . . . . . . . . . . 21
8.2 Output drive strength control . . . . . . . . . . . . . 22
8.3 Power-on reset requirements . . . . . . . . . . . . . 23
8.4 Device current consumption with internal
pull-up and pull-down resistors. . . . . . . . . . . . 25
9 Limiting values. . . . . . . . . . . . . . . . . . . . . . . . . 26
10 Recommended operating conditions. . . . . . . 26
11 Thermal characteristics . . . . . . . . . . . . . . . . . 26
12 Static characteristics. . . . . . . . . . . . . . . . . . . . 27
12.1 Typical characteristics . . . . . . . . . . . . . . . . . . 29
13 Dynamic characteristics. . . . . . . . . . . . . . . . . 33
14 Parameter measurement information . . . . . . 34
15 Package outline. . . . . . . . . . . . . . . . . . . . . . . . 38
16 Handling information . . . . . . . . . . . . . . . . . . . 40
17 Soldering of SMD packages. . . . . . . . . . . . . . 40
17.1 Introduction to soldering. . . . . . . . . . . . . . . . . 40
17.2 Wave and reflow soldering. . . . . . . . . . . . . . . 40
17.3 Wave soldering . . . . . . . . . . . . . . . . . . . . . . . 40
17.4 Reflow soldering . . . . . . . . . . . . . . . . . . . . . . 41
18 Soldering: PCB footprints . . . . . . . . . . . . . . . 43
19 Abbreviations . . . . . . . . . . . . . . . . . . . . . . . . . 45
20 Revision history . . . . . . . . . . . . . . . . . . . . . . . 45
21 Legal information . . . . . . . . . . . . . . . . . . . . . . 46
21.1 Data sheet status . . . . . . . . . . . . . . . . . . . . . . 46
21.2 Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
21.3 Disclaimers . . . . . . . . . . . . . . . . . . . . . . . . . . 46
21.4 Trademarks . . . . . . . . . . . . . . . . . . . . . . . . . . 47
22 Contact information . . . . . . . . . . . . . . . . . . . . 47
23 Contents. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48