Datasheet PCA9685 (NXP) - 6

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NXP Semiconductors PCA9685 16-channel, 12-bit PWM Fm+ I2C-bus LED controller 6. Pinning information 6.1 Pinning
A0 1 28 VDD A1 2 27 SDA terminal 1 DD A2 3 26 SCL A2 A1 A0 V SDA SCL EXTCLK index area A3 4 25 EXTCLK 28 27 26 25 24 23 22 A4 5 24 A5 A3 1 21 A5 LED0 6 23 OE A4 2 20 OE LED1 7
PCA9685PW
22 LED15 LED0 3 19 LED15 LED2 8
PCA9685PW/Q900
21 LED14 LED1 4
PCA9685BS
18 LED14 LED3 9 20 LED13 LED2 5 17 LED13 LED4 10 19 LED12 LED3 6 16 LED12 LED5 11 18 LED11 LED4 7 15 LED11 LED6 12 17 LED10 8 9 10 11 12 13 14 LED7 13 16 LED9 V SS SS 14 15 LED8 V 002aad236 LED5 LED6 LED7 LED8 LED9 LED10 002aac825 Transparent top view
Fig 2. Pin configuration for TSSOP28 Fig 3. Pin configuration for HVQFN28 6.2 Pin description Table 3. Pin description Symbol Pin Type Description TSSOP28 HVQFN28
A0 1 26 I address input 0 A1 2 27 I address input 1 A2 3 28 I address input 2 A3 4 1 I address input 3 A4 5 2 I address input 4 LED0 6 3 O LED driver 0 LED1 7 4 O LED driver 1 LED2 8 5 O LED driver 2 LED3 9 6 O LED driver 3 LED4 10 7 O LED driver 4 LED5 11 8 O LED driver 5 LED6 12 9 O LED driver 6 LED7 13 10 O LED driver 7 VSS 14 11[1] power supply supply ground LED8 15 12 O LED driver 8 LED9 16 13 O LED driver 9 LED10 17 14 O LED driver 10 LED11 18 15 O LED driver 11 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 6 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