PCAL9554B datasheet(42/42 Pages) NXP

42 / 42 page

NXP Semiconductors

PCAL9554B; PCAL9554C

Low-voltage 8-bit I2C-bus/SMBus low power I/O port

For more information, please visit: http://www.nxp.com

For sales office addresses, please send an email to: salesaddresses@nxp.com

Date of release: 10 December 2012

Document identifier: PCAL9554B_PCAL9554C

Please be aware that important notices concerning this document and the product(s)

described herein, have been included in section ‘Legal information’.

23. Contents

General description . . . . . . . . . . . . . . . . . . . . . . 1

Features and benefits . . . . . . . . . . . . . . . . . . . . 2

2.1

Agile I/O features . . . . . . . . . . . . . . . . . . . . . . . 2

Ordering information . . . . . . . . . . . . . . . . . . . . . 3

3.1

Ordering options . . . . . . . . . . . . . . . . . . . . . . . . 3

Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . 3

Pinning information . . . . . . . . . . . . . . . . . . . . . . 4

5.1

Pinning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

5.2

Pin description . . . . . . . . . . . . . . . . . . . . . . . . . 4

Functional description . . . . . . . . . . . . . . . . . . . 5

6.1

Device address . . . . . . . . . . . . . . . . . . . . . . . . . 5

6.2

Pointer register and command byte . . . . . . . . . 5

6.3

Interface definition . . . . . . . . . . . . . . . . . . . . . . 6

6.4

6.4.1

Input port register (00h) . . . . . . . . . . . . . . . . . . 6

6.4.2

Output port register (01h) . . . . . . . . . . . . . . . . . 6

6.4.3

Polarity inversion register (02h) . . . . . . . . . . . . 7

6.4.4

Configuration register (03h) . . . . . . . . . . . . . . . 7

6.4.5

Output drive strength registers (40h, 41h) . . . . 7

6.4.6

Input latch register (42h). . . . . . . . . . . . . . . . . . 8

6.4.7

Pull-up/pull-down enable register (43h) . . . . . . 8

6.4.8

Pull-up/pull-down selection register (44h). . . . . 9

6.4.9

Interrupt mask register (45h) . . . . . . . . . . . . . . 9

6.4.10

Interrupt status register (46h) . . . . . . . . . . . . . . 9

6.4.11

Output port configuration register (47h) . . . . . 10

6.5

I/O port . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

6.6

Power-on reset . . . . . . . . . . . . . . . . . . . . . . . . 11

6.7

Interrupt output (INT) . . . . . . . . . . . . . . . . . . . 11

Bus transactions . . . . . . . . . . . . . . . . . . . . . . . 12

7.1

Write commands. . . . . . . . . . . . . . . . . . . . . . . 12

7.2

Read commands . . . . . . . . . . . . . . . . . . . . . . 13

Application design-in information . . . . . . . . . 15

8.1

Minimizing IDD when the I/Os are used

to control LEDs . . . . . . . . . . . . . . . . . . . . . . . . 15

8.2

Output drive strength control . . . . . . . . . . . . . 16

8.3

12 V tolerant I/Os . . . . . . . . . . . . . . . . . . . . . . 17

8.4

Power-on reset requirements . . . . . . . . . . . . . 18

8.5

Device current consumption with internal

pull-up and pull-down resistors . . . . . . . . . . . . 20

Limiting values. . . . . . . . . . . . . . . . . . . . . . . . . 21

Recommended operating conditions. . . . . . . 21

Thermal characteristics . . . . . . . . . . . . . . . . . 21

Static characteristics . . . . . . . . . . . . . . . . . . . . 22

12.1

Typical characteristics . . . . . . . . . . . . . . . . . . 24

Dynamic characteristics . . . . . . . . . . . . . . . . . 28

Parameter measurement information . . . . . . 29

Package outline. . . . . . . . . . . . . . . . . . . . . . . . 32

Handling information . . . . . . . . . . . . . . . . . . . 34

Soldering of SMD packages . . . . . . . . . . . . . . 34

17.1

Introduction to soldering. . . . . . . . . . . . . . . . . 34

17.2

Wave and reflow soldering. . . . . . . . . . . . . . . 34

17.3

Wave soldering . . . . . . . . . . . . . . . . . . . . . . . 34

17.4

Reflow soldering . . . . . . . . . . . . . . . . . . . . . . 35

Soldering: PCB footprints . . . . . . . . . . . . . . . 37

Abbreviations . . . . . . . . . . . . . . . . . . . . . . . . . 39

Revision history . . . . . . . . . . . . . . . . . . . . . . . 39

Legal information . . . . . . . . . . . . . . . . . . . . . . 40

21.1

Data sheet status . . . . . . . . . . . . . . . . . . . . . . 40

21.2

Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . 40

21.3

Disclaimers . . . . . . . . . . . . . . . . . . . . . . . . . . 40

21.4

Trademarks . . . . . . . . . . . . . . . . . . . . . . . . . . 41

Contact information . . . . . . . . . . . . . . . . . . . . 41

Contents. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

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