Datasheet PCA9685 (NXP) - 10

NXP Semiconductors PCA9685 16-channel, 12-bit PWM Fm+ I2C-bus LED controller 7.3 Register definitions Table 4. Register summary Register # Register # D7 D6 D5 D4 D3 D2 D1 D0 Name Type Function (decimal) (hex)
0 00 0 0 0 0 0 0 0 0 MODE1 read/write Mo de regis ter 1 1 01 0 0 0 0 0 0 0 1 MODE2 read/write Mo de regis ter 2 2 02 0 0 0 0 0 0 1 0 SUBADR1 read/write I2C-bus subaddress 1 3 03 0 0 0 0 0 0 1 1 SUBADR2 read/write I2C-bus subaddress 2 4 04 0 0 0 0 0 1 0 0 SUBADR3 read/write I2C-bus subaddress 3 5 05 0 0 0 0 0 1 0 1 ALLCALLADR read/write LED All Call I2C-bus address 6 06 0 0 0 0 0 1 1 0 LED0_ON_L read/write LED0 output and brightness control byte 0 7 07 0 0 0 0 0 1 1 1 LED0_ON_H read/write LED0 output and brightness control byte 1 8 08 0 0 0 0 1 0 0 0 LED0_OFF_L read/write LED0 output and brightness control byte 2 9 09 0 0 0 0 1 0 0 1 LED0_OFF_H read/write LED0 output and brightness control byte 3 10 0A 0 0 0 0 1 0 1 0 LED1_ON_L read/write LED1 output and brightness control byte 0 11 0B 0 0 0 0 1 0 1 1 LED1_ON_H read/write LED1 output and brightness control byte 1 12 0C 0 0 0 0 1 1 0 0 LED1_OFF_L read/write LED1 output and brightness control byte 2 13 0D 0 0 0 0 1 1 0 1 LED1_OFF_H read/write LED1 output and brightness control byte 3 14 0E 0 0 0 0 1 1 1 0 LED2_ON_L read/write LED2 output and brightness control byte 0 15 0F 0 0 0 0 1 1 1 1 LED2_ON_H read/write LED2 output and brightness control byte 1 16 10 0 0 0 1 0 0 0 0 LED2_OFF_L read/write LED2 output and brightness control byte 2 17 11 0 0 0 1 0 0 0 1 LED2_OFF_H read/write LED2 output and brightness control byte 3 18 12 0 0 0 1 0 0 1 0 LED3_ON_L read/write LED3 output and brightness control byte 0 19 13 0 0 0 1 0 0 1 1 LED3_ON_H read/write LED3 output and brightness control byte 1 20 14 0 0 0 1 0 1 0 0 LED3_OFF_L read/write LED3 output and brightness control byte 2 21 15 0 0 0 1 0 1 0 1 LED3_OFF_H read/write LED3 output and brightness control byte 3 PCA9685 All information provided in this document is subject to legal disclaimers. © NXP Semiconductors N.V. 2015. All rights reserved.
Product data sheet Rev. 4 — 16 April 2015 10 of 52
Document Outline 1. General description 2. Features and benefits 3. Applications 4. Ordering information 4.1 Ordering options 5. Block diagram 6. Pinning information 6.1 Pinning 6.2 Pin description 7. Functional description 7.1 Device addresses 7.1.1 Regular I2C-bus slave address 7.1.2 LED All Call I2C-bus address 7.1.3 LED Sub Call I2C-bus addresses 7.1.4 Software Reset I2C-bus address 7.2 Control register 7.3 Register definitions 7.3.1 Mode register 1, MODE1 7.3.1.1 Restart mode 7.3.2 Mode register 2, MODE2 7.3.3 LED output and PWM control 7.3.4 ALL_LED_ON and ALL_LED_OFF control 7.3.5 PWM frequency PRE_SCALE 7.3.6 SUBADR1 to SUBADR3, I2C-bus subaddress 1 to 3 7.3.7 ALLCALLADR, LED All Call I2C-bus address 7.4 Active LOW output enable input 7.5 Power-on reset 7.6 Software reset 7.7 Using the PCA9685 with and without external drivers 8. Characteristics of the I2C-bus 8.1 Bit transfer 8.1.1 START and STOP conditions 8.2 System configuration 8.3 Acknowledge 9. Bus transactions 10. Application design-in information 11. Limiting values 12. Static characteristics 13. Dynamic characteristics 14. Test information 15. Package outline 16. Handling information 17. Soldering of SMD packages 17.1 Introduction to soldering 17.2 Wave and reflow soldering 17.3 Wave soldering 17.4 Reflow soldering 18. Abbreviations 19. Revision history 20. Legal information 20.1 Data sheet status 20.2 Definitions 20.3 Disclaimers 20.4 Trademarks 21. Contact information 22. Contents