Data Sheet

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 18 of 52
NXP Semiconductors
PCA9685
16-channel, 12-bit PWM Fm+ I
2
C-bus LED controller
Example 1: LEDn_ON (511) < LEDn_OFF (3071)
Example 2: LEDn_ON (2047) > LEDn_OFF (767)
Example 3: LEDn_ON[12] = 1; LEDn_ON[11:0] = 1022; LEDn_OFF[12] = 0; LEDn_OFF[11:0] = don’t care
Example 4: LEDn_ON[12] = 0; LEDn_OFF[12] = 0; LEDn_ON[11:0] = LEDn_OFF[11:0]
Fig 9. Output example
0
STOP
example 1
LEDn_ON
LEDn_OFF
4095 0
511
3071
511
3071
4095
0
511
3071
4095
0
LEDn_ON
LEDn_OFF
2047 2047
767
example 2
2047
767
002aad193
LEDn_ON
example 3
LEDn_ON
LEDn_OFF
example 4
1023
off
1023
1023