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PCA9685_2
NXP B.V. 2009. All rights reserved.
Product data sheet
Rev. 02 — 16 July 2009
10 of 50
NXP Semiconductors
PCA9685
16-channel, 12-bit PWM Fm+ I2C-bus LED controller
22
16
00010110
LED4_ON_L
read/write
LED4 output and
brightness control byte 0
23
17
00010111
LED4_ON_H
read/write
LED4 output and
brightness control byte 1
24
18
00011000
LED4_OFF_L
read/write
LED4 output and
brightness control byte 2
25
19
00011001
LED4_OFF_H
read/write
LED4 output and
brightness control byte 3
26
1A
00011010
LED5_ON_L
read/write
LED5 output and
brightness control byte 0
27
1B
00011011
LED5_ON_H
read/write
LED5 output and
brightness control byte 1
28
1C
00011100
LED5_OFF_L
read/write
LED5 output and
brightness control byte 2
29
1D
00011101
LED5_OFF_H
read/write
LED5 output and
brightness control byte 3
30
1E
00011110
LED6_ON_L
read/write
LED6 output and
brightness control byte 0
31
1F
00011111
LED6_ON_H
read/write
LED6 output and
brightness control byte 1
32
20
00100000
LED6_OFF_L
read/write
LED6 output and
brightness control byte 2
33
21
00100001
LED6_OFF_H
read/write
LED6 output and
brightness control byte 3
34
22
00100010
LED7_ON_L
read/write
LED7 output and
brightness control byte 0
35
23
00100011
LED7_ON_H
read/write
LED7 output and
brightness control byte 1
36
24
00100100
LED7_OFF_L
read/write
LED7 output and
brightness control byte 2
37
25
00100101
LED7_OFF_H
read/write
LED7 output and
brightness control byte 3
38
26
00100110
LED8_ON_L
read/write
LED8 output and
brightness control byte 0
39
27
00100111
LED8_ON_H
read/write
LED8 output and
brightness control byte 1
40
28
00101000
LED8_OFF_L
read/write
LED8 output and
brightness control byte 2
41
29
00101001
LED8_OFF_H
read/write
LED8 output and
brightness control byte 3
Table 3.
Register summary …continued
Register
#
(decimal)
Register
# (hex)
D7 D6 D5 D4 D3 D2 D1 D0 Name
Type
Function