PCA9685PW,118 Просмотр технического описания (PDF) - NXP Semiconductors.
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PCA9685PW,118 Datasheet PDF : 51 Pages
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NXP Semiconductors
PCA9685
16-channel, 12-bit PWM Fm+ I2C-bus LED controller
22. Contents
1
General description . . . . . . . . . . . . . . . . . . . . . . 1 17.1
Introduction to soldering. . . . . . . . . . . . . . . . . 45
2
Features and benefits . . . . . . . . . . . . . . . . . . . . 2 17.2
Wave and reflow soldering. . . . . . . . . . . . . . . 45
3
Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 17.3
Wave soldering . . . . . . . . . . . . . . . . . . . . . . . 45
4
Ordering information . . . . . . . . . . . . . . . . . . . . . 3 17.4
Reflow soldering . . . . . . . . . . . . . . . . . . . . . . 46
5
Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . 4 18
Abbreviations . . . . . . . . . . . . . . . . . . . . . . . . . 47
6
Pinning information . . . . . . . . . . . . . . . . . . . . . . 5 19
6.1
Pinning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 20
Revision history . . . . . . . . . . . . . . . . . . . . . . . 48
Legal information . . . . . . . . . . . . . . . . . . . . . . 49
6.2
Pin description . . . . . . . . . . . . . . . . . . . . . . . . . 5 20.1
Data sheet status . . . . . . . . . . . . . . . . . . . . . . 49
7
7.1
7.1.1
7.1.2
Functional description . . . . . . . . . . . . . . . . . . . 6
Device addresses . . . . . . . . . . . . . . . . . . . . . . . 6
Regular I2C-bus slave address. . . . . . . . . . . . . 6
LED All Call I2C-bus address . . . . . . . . . . . . . . 7
20.2
Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
20.3
Disclaimers . . . . . . . . . . . . . . . . . . . . . . . . . . 49
20.4
Trademarks . . . . . . . . . . . . . . . . . . . . . . . . . . 50
21
Contact information . . . . . . . . . . . . . . . . . . . . 50
7.1.3
LED Sub Call I2C-bus addresses . . . . . . . . . . . 7 22
Contents. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
7.1.4 Software Reset I2C-bus address . . . . . . . . . . . 8
7.2
Control register . . . . . . . . . . . . . . . . . . . . . . . . . 8
7.3
Register definitions . . . . . . . . . . . . . . . . . . . . . . 9
7.3.1 Mode register 1, MODE1 . . . . . . . . . . . . . . . . 13
7.3.1.1 Restart mode . . . . . . . . . . . . . . . . . . . . . . . . . 14
7.3.2 Mode register 2, MODE2 . . . . . . . . . . . . . . . . 15
7.3.3 LED output and PWM control . . . . . . . . . . . . . 15
7.3.4 ALL_LED_ON and ALL_LED_OFF control. . . 24
7.3.5 PWM frequency PRE_SCALE . . . . . . . . . . . . 24
7.3.6 SUBADR1 to SUBADR3, I2C-bus
subaddress 1 to 3 . . . . . . . . . . . . . . . . . . . . . . 25
7.3.7 ALLCALLADR, LED All Call I2C-bus
address . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
7.4
Active LOW output enable input . . . . . . . . . . . 26
7.5
Power-on reset . . . . . . . . . . . . . . . . . . . . . . . . 26
7.6
Software reset. . . . . . . . . . . . . . . . . . . . . . . . . 27
7.7
Using the PCA9685 with and without
external drivers . . . . . . . . . . . . . . . . . . . . . . . . 28
8
Characteristics of the I2C-bus . . . . . . . . . . . . 29
8.1
8.1.1
8.2
8.3
Bit transfer . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
START and STOP conditions . . . . . . . . . . . . . 29
System configuration . . . . . . . . . . . . . . . . . . . 29
Acknowledge . . . . . . . . . . . . . . . . . . . . . . . . . 30
9
Bus transactions . . . . . . . . . . . . . . . . . . . . . . . 31
10
Application design-in information . . . . . . . . . 34
11
Limiting values. . . . . . . . . . . . . . . . . . . . . . . . . 37
12
Static characteristics. . . . . . . . . . . . . . . . . . . . 37
13
Dynamic characteristics . . . . . . . . . . . . . . . . . 39
14
Test information . . . . . . . . . . . . . . . . . . . . . . . . 42
15
Package outline . . . . . . . . . . . . . . . . . . . . . . . . 43
16
Handling information. . . . . . . . . . . . . . . . . . . . 45
17
Soldering of SMD packages . . . . . . . . . . . . . . 45
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. 2010.
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: 2 September 2010
Document identifier: PCA9685
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