pca9685 NXP Semiconductors, pca9685 Datasheet - Page 50

• Manufacturer Part Number: pca9685
• Description: 16-channel, 12-bit Pwm Fm+ I 2c-bus Led Controller
• Manufacturer: NXP Semiconductors

NXP Semiconductors
22. Contents
1
2
3
4
5
6
6.1
6.2
7
7.1
7.1.1
7.1.2
7.1.3
7.1.4
7.2
7.3
7.3.1
7.3.1.1
7.3.2
7.3.3
7.3.4
7.3.5
7.3.6
7.3.7
7.4
7.5
7.6
7.7
8
8.1
8.1.1
8.2
8.3
9
10
11
12
13
14
15
16
17
General description . . . . . . . . . . . . . . . . . . . . . . 1
Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Ordering information . . . . . . . . . . . . . . . . . . . . . 3
Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Pinning information . . . . . . . . . . . . . . . . . . . . . . 5
Functional description . . . . . . . . . . . . . . . . . . . 6
Characteristics of the I
Bus transactions . . . . . . . . . . . . . . . . . . . . . . . 31
Application design-in information . . . . . . . . . 34
Limiting values. . . . . . . . . . . . . . . . . . . . . . . . . 37
Static characteristics. . . . . . . . . . . . . . . . . . . . 37
Dynamic characteristics . . . . . . . . . . . . . . . . . 39
Test information . . . . . . . . . . . . . . . . . . . . . . . . 42
Package outline . . . . . . . . . . . . . . . . . . . . . . . . 43
Handling information. . . . . . . . . . . . . . . . . . . . 45
Soldering of SMD packages . . . . . . . . . . . . . . 45
Pinning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Pin description . . . . . . . . . . . . . . . . . . . . . . . . . 5
Device addresses . . . . . . . . . . . . . . . . . . . . . . . 6
Regular I
LED All Call I
LED Sub Call I
Software Reset I
Control register . . . . . . . . . . . . . . . . . . . . . . . . . 8
Register definitions . . . . . . . . . . . . . . . . . . . . . . 9
Mode register 1, MODE1 . . . . . . . . . . . . . . . . 13
Restart mode . . . . . . . . . . . . . . . . . . . . . . . . . 14
Mode register 2, MODE2 . . . . . . . . . . . . . . . . 15
LED output and PWM control . . . . . . . . . . . . . 15
ALL_LED_ON and ALL_LED_OFF control. . . 24
PWM frequency PRE_SCALE . . . . . . . . . . . . 24
SUBADR1 to SUBADR3, I
subaddress 1 to 3 . . . . . . . . . . . . . . . . . . . . . . 25
ALLCALLADR, LED All Call I
address . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Active LOW output enable input . . . . . . . . . . . 26
Power-on reset . . . . . . . . . . . . . . . . . . . . . . . . 26
Software reset. . . . . . . . . . . . . . . . . . . . . . . . . 27
Using the PCA9685 with and without
external drivers . . . . . . . . . . . . . . . . . . . . . . . . 28
Bit transfer . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
START and STOP conditions . . . . . . . . . . . . . 29
System configuration . . . . . . . . . . . . . . . . . . . 29
Acknowledge . . . . . . . . . . . . . . . . . . . . . . . . . 30
2
C-bus slave address . . . . . . . . . . . . . 6
2
C-bus address . . . . . . . . . . . . . . 7
2
C-bus addresses . . . . . . . . . . . 7
2
C-bus address . . . . . . . . . . . 8
2
C-bus. . . . . . . . . . . . . 29
2
C-bus
2
C-bus
16-channel, 12-bit PWM Fm+ I
17.1
17.2
17.3
17.4
18
19
20
20.1
20.2
20.3
20.4
21
22
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. 2008.
For more information, please visit: http://www.nxp.com
For sales office addresses, please send an email to: [e-mail]
Abbreviations . . . . . . . . . . . . . . . . . . . . . . . . . 47
Revision history . . . . . . . . . . . . . . . . . . . . . . . 48
Legal information . . . . . . . . . . . . . . . . . . . . . . 49
Contact information . . . . . . . . . . . . . . . . . . . . 49
Contents. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
Introduction to soldering. . . . . . . . . . . . . . . . . 45
Wave and reflow soldering . . . . . . . . . . . . . . . 45
Wave soldering. . . . . . . . . . . . . . . . . . . . . . . . 45
Reflow soldering. . . . . . . . . . . . . . . . . . . . . . . 46
Data sheet status . . . . . . . . . . . . . . . . . . . . . . 49
Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
Disclaimers. . . . . . . . . . . . . . . . . . . . . . . . . . . 49
Trademarks . . . . . . . . . . . . . . . . . . . . . . . . . . 49
2
C-bus LED controller
Document identifier: PCA9685_1
PCA9685
Date of release: 24 July 2008
All rights reserved.