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NXP Semiconductors
PCA9685
16-channel, 12-bit PWM Fm+ I 2 C-bus LED controller
Table 6. LED_ON, LED_OFF control registers (address 06h to 45h) bit description …continued
Legend: * default value.
Address
2Ah
2Bh
2Ch
2Dh
2Eh
2Fh
30h
31h
Register
LED9_ON_L
LED9_ON_H
LED9_OFF_L
LED9_OFF_H
LED10_ON_L
LED10_ON_H
LED10_OFF_L
LED10_OFF_H
Bit
7:0
7:5
4
3:0
7:0
7:5
4
3:0
7:0
7:5
4
3:0
7:0
7:5
4
Symbol
LED9_ON_L[7:0]
reserved
LED9_ON_H[4]
LED9_ON_H[3:0]
LED9_OFF_L[7:0]
reserved
LED9_OFF_H[4]
LED9_OFF_H[3:0]
LED10_ON_L[7:0]
reserved
LED10_ON_H[4]
LED10_ON_H[3:0]
LED10_OFF_L[7:0]
reserved
LED10_OFF_H[4]
Access
R/W
R
R/W
R/W
R/W
R
R/W
R/W
R/W
R
R/W
R/W
R/W
R
R/W
Value
0000 0000*
000*
0*
0000*
0000 0000*
000*
1*
0000*
0000 0000*
000*
0*
0000*
0000 0000*
000*
1*
Description
LEDn_ON count for LED9, 8 LSBs
non-writable
LED9 full ON
LEDn_ON count for LED9, 4 MSBs
LEDn_OFF count for LED9, 8 LSBs
non-writable
LED9 full OFF
LEDn_OFF count for LED9, 4 MSBs
LEDn_ON count for LED10, 8 LSBs
non-writable
LED10 full ON
LEDn_ON count for LED10, 4 MSBs
LEDn_OFF count for LED10, 8 LSBs
non-writable
LED10 full OFF
3:0
LED10_OFF_H[3:0] R/W
0000*
LEDn_OFF count for LED10, 4 MSBs
32h
33h
34h
35h
36h
37h
38h
39h
LED11_ON_L
LED11_ON_H
LED11_OFF_L
LED11_OFF_H
LED12_ON_L
LED12_ON_H
LED12_OFF_L
LED12_OFF_H
7:0
7:5
4
3:0
7:0
7:5
4
3:0
7:0
7:5
4
3:0
7:0
7:5
4
LED11_ON_L[7:0]
reserved
LED11_ON_H[4]
LED11_ON_H[3:0]
LED11_OFF_L[7:0]
reserved
LED11_OFF_H[4]
LED11_OFF_H[3:0]
LED12_ON_L[7:0]
reserved
LED12_ON_H[4]
LED12_ON_H[3:0]
LED12_OFF_L[7:0]
reserved
LED12_OFF_H[4]
R/W
R
R/W
R/W
R/W
R
R/W
R/W
R/W
R
R/W
R/W
R/W
R
R/W
0000 0000*
000*
0*
0000*
0000 0000*
000*
1*
0000*
0000 0000*
000*
0*
0000*
0000 0000*
000*
1*
LEDn_ON count for LED11, 8 LSBs
non-writable
LED11 full ON
LEDn_ON count for LED11, 4 MSBs
LEDn_OFF count for LED11, 8 LSBs
non-writable
LED11 full OFF
LEDn_OFF count for LED11, 4 MSBs
LEDn_ON count for LED12, 8 LSBs
non-writable
LED12 full ON
LEDn_ON count for LED12, 4 MSBs
LEDn_OFF count for LED12, 8 LSBs
non-writable
LED12 full OFF
3:0
LED12_OFF_H[3:0] R/W
0000*
LEDn_OFF count for LED12, 4 MSBs
3Ah
3Bh
LED13_ON_L
LED13_ON_H
7:0
7:5
4
3:0
LED13_ON_L[7:0]
reserved
LED13_ON_H[4]
LED13_ON_H[3:0]
R/W
R
R/W
R/W
0000 0000*
000*
0*
0000*
LEDn_ON count for LED13, 8 LSBs
non-writable
LED13 full ON
LEDn_ON count for LED13, 4 MSBs
PCA9685
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 3 — 2 September 2010
? NXP B.V. 2010. All rights reserved.
22 of 51
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