pca9557bs NXP Semiconductors, pca9557bs Datasheet - Page 26

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pca9557bs

Manufacturer Part Number
pca9557bs
Description
8-bit I2c And Smbus I/0 Port With Reset
Manufacturer
NXP Semiconductors
Datasheet

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NXP Semiconductors
20. Contents
1
2
3
3.1
4
5
5.1
5.2
6
7
7.1
7.2
7.3
7.3.1
7.3.2
7.3.3
7.3.4
7.4
7.5
8
8.1
8.1.1
8.2
8.3
8.4
9
9.1
10
11
12
13
14
15
15.1
15.2
15.3
15.4
16
17
18
18.1
18.2
18.3
General description . . . . . . . . . . . . . . . . . . . . . . 1
Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Ordering information . . . . . . . . . . . . . . . . . . . . . 2
Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Pinning information . . . . . . . . . . . . . . . . . . . . . . 5
System diagram . . . . . . . . . . . . . . . . . . . . . . . . . 6
Functional description . . . . . . . . . . . . . . . . . . . 7
Characteristics of the I
Application design-in information . . . . . . . . . 13
Limiting values. . . . . . . . . . . . . . . . . . . . . . . . . 14
Static characteristics. . . . . . . . . . . . . . . . . . . . 15
Dynamic characteristics . . . . . . . . . . . . . . . . . 16
Package outline . . . . . . . . . . . . . . . . . . . . . . . . 18
Handling information. . . . . . . . . . . . . . . . . . . . 21
Soldering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Abbreviations . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Revision history . . . . . . . . . . . . . . . . . . . . . . . . 24
Legal information. . . . . . . . . . . . . . . . . . . . . . . 25
Ordering options . . . . . . . . . . . . . . . . . . . . . . . . 2
Pinning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Pin description . . . . . . . . . . . . . . . . . . . . . . . . . 5
Device address . . . . . . . . . . . . . . . . . . . . . . . . . 7
Control register . . . . . . . . . . . . . . . . . . . . . . . . . 7
Register descriptions . . . . . . . . . . . . . . . . . . . . 8
Register 0 - Input port register . . . . . . . . . . . . . 8
Register 1 - Output port register . . . . . . . . . . . . 8
Register 2 - Polarity inversion register . . . . . . . 8
Register 3 - Configuration register . . . . . . . . . . 8
Power-on reset . . . . . . . . . . . . . . . . . . . . . . . . . 9
RESET input . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Bit transfer . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
START and STOP conditions . . . . . . . . . . . . . . 9
System configuration . . . . . . . . . . . . . . . . . . . 10
Acknowledge . . . . . . . . . . . . . . . . . . . . . . . . . 10
Bus transactions . . . . . . . . . . . . . . . . . . . . . . . 11
Minimizing I
control LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Introduction to soldering . . . . . . . . . . . . . . . . . 21
Wave and reflow soldering . . . . . . . . . . . . . . . 21
Wave soldering . . . . . . . . . . . . . . . . . . . . . . . . 21
Reflow soldering . . . . . . . . . . . . . . . . . . . . . . . 22
Data sheet status . . . . . . . . . . . . . . . . . . . . . . 25
Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Disclaimers . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
DD
when the I/Os are used to
2
C-bus. . . . . . . . . . . . . . 9
18.4
19
20
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. 2007.
For more information, please visit: http://www.nxp.com
For sales office addresses, please send an email to: salesaddresses@nxp.com
Contact information . . . . . . . . . . . . . . . . . . . . 25
Contents. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
8-bit I
Trademarks . . . . . . . . . . . . . . . . . . . . . . . . . . 25
2
C-bus and SMBus I/O port with reset
Date of release: 12 September 2007
Document identifier: PCA9557_5
PCA9557
All rights reserved.

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