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PCA9685PW/Q900 Datasheet PDF : 51 Pages
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NXP Semiconductors
PCA9685
16-channel, 12-bit PWM Fm+ I2C-bus LED controller
Table 6. LED_ON, LED_OFF control registers (address 06h to 45h) bit description …continued
Legend: * default value.
Address Register
Bit Symbol
Access Value
Description
18h
LED4_OFF_L 7:0 LED4_OFF_L[7:0] R/W
0000 0000* LEDn_OFF count for LED4, 8 LSBs
19h
LED4_OFF_H 7:5 reserved
R
000*
non-writable
4 LED4_OFF_H[4] R/W
1*
LED4 full OFF
3:0 LED4_OFF_H[3:0] R/W
0000* LEDn_OFF count for LED4, 4 MSBs
1Ah
LED5_ON_L
7:0 LED5_ON_L[7:0] R/W
0000 0000* LEDn_ON count for LED5, 8 LSBs
1Bh
LED5_ON_H
7:5 reserved
R
000*
non-writable
4 LED5_ON_H[4]
R/W
0*
LED5 full ON
3:0 LED5_ON_H[3:0] R/W
0000* LEDn_ON count for LED5, 4 MSBs
1Ch
LED5_OFF_L 7:0 LED5_OFF_L[7:0] R/W
0000 0000* LEDn_OFF count for LED5, 8 LSBs
1Dh
LED5_OFF_H 7:5 reserved
R
000*
non-writable
4 LED5_OFF_H[4] R/W
1*
LED5 full OFF
3:0 LED5_OFF_H[3:0] R/W
0000* LEDn_OFF count for LED5, 4 MSBs
1Eh
LED6_ON_L
7:0 LED6_ON_L[7:0] R/W
0000 0000* LEDn_ON count for LED6, 8 LSBs
1Fh
LED6_ON_H
7:5 reserved
R
000*
non-writable
4 LED6_ON_H[4]
R/W
0*
LED6 full ON
3:0 LED6_ON_H[3:0] R/W
0000* LEDn_ON count for LED6, 4 MSBs
20h
LED6_OFF_L 7:0 LED6_OFF_L[7:0] R/W
0000 0000* LEDn_OFF count for LED6, 8 LSBs
21h
LED6_OFF_H 7:5 reserved
R
000*
non-writable
4 LED6_OFF_H[4] R/W
1*
LED6 full OFF
3:0 LED6_OFF_H[3:0] R/W
0000* LEDn_OFF count for LED6, 4 MSBs
22h
LED7_ON_L
7:0 LED7_ON_L[7:0] R/W
0000 0000* LEDn_ON count for LED7, 8 LSBs
23h
LED7_ON_H
7:5 reserved
R
000*
non-writable
4 LED7_ON_H[4]
R/W
0*
LED7 full ON
3:0 LED7_ON_H[3:0] R/W
0000* LEDn_ON count for LED7, 4 MSBs
24h
LED7_OFF_L 7:0 LED7_OFF_L[7:0] R/W
0000 0000* LEDn_OFF count for LED7, 8 LSBs
25h
LED7_OFF_H 7:5 reserved
R
000*
non-writable
4 LED7_OFF_H[4] R/W
1*
LED7 full OFF
3:0 LED7_OFF_H[3:0] R/W
0000* LEDn_OFF count for LED7, 4 MSBs
26h
LED8_ON_L
7:0 LED8_ON_L[7:0] R/W
0000 0000* LEDn_ON count for LED8, 8 LSBs
27h
LED8_ON_H
7:5 reserved
R
000*
non-writable
4 LED8_ON_H[4]
R/W
0*
LED8 full ON
3:0 LED8_ON_H[3:0] R/W
0000* LEDn_ON count for LED8, 4 MSBs
28h
LED8_OFF_L 7:0 LED8_OFF_L[7:0] R/W
0000 0000* LEDn_OFF count for LED8, 8 LSBs
29h
LED8_OFF_H 7:5 reserved
R
000*
non-writable
4 LED8_OFF_H[4] R/W
1*
LED8 full OFF
3:0 LED8_OFF_H[3:0] R/W
0000* LEDn_OFF count for LED8, 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.
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