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 18 of 51
NXP Semiconductors
PCA9685
16-channel, 12-bit PWM Fm+ I
2
C-bus LED controller
Example 1: LEDn_ON unchanged and LEDn_OFF decreased.
Example 2: LEDn_ON increased and LEDn_OFF decreased.
Example 3: LEDn_ON made > LEDn_OFF.
Example 4: LEDn_OFF[12] set to 1.
Fig 10. Update examples when LEDn_ON < LEDn_OFF
0
STOP
example 1
LEDn_ON
LEDn_OFF
4095 0
511
3071
511
1023
4095
0
511
4095 0
LEDn_ON
LEDn_OFF
767
example 2
767
002aad19
4
LEDn_ON
example 3
LEDn_ON
LEDn_OFF
example 4
off
register(s) updated in this cycle
511
3071 1023
511
3071
511
3071
1023
3071
1023
1023LEDn_OFF
output(s) updated in this cycle