Data Sheet

PCA9685 All information provided in this document is subject to legal disclaimers. © NXP B.V. 2010. All rights reserved.
Product data sheet Rev. 3 — 2 September 2010 17 of 51
NXP Semiconductors
PCA9685
16-channel, 12-bit PWM Fm+ I
2
C-bus LED controller
Example 1: LEDn_ON < LEDn_OFF
Example 2: LEDn_ON > LEDn_OFF
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
002aad19
3
LEDn_ON
example 3
LEDn_ON
LEDn_OFF
example 4
1023
off
1023
1023