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PCA9685 Datasheet(PDF) 13 Page - NXP Semiconductors

Part # PCA9685
Description  16-channel 12-bit PWM Fm I2C-bus LED controller
PDF  52 Pages
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Manufacturer  PHILIPS [NXP Semiconductors]
Direct Link  http://www.nxp.com
Logo PHILIPS - NXP Semiconductors

PCA9685 Datasheet(HTML) 13 Page - NXP Semiconductors

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PCA9685
All information provided in this document is subject to legal disclaimers.
© NXP Semiconductors N.V. 2015. All rights reserved.
Product data sheet
Rev. 4 — 16 April 2015
13 of 52
NXP Semiconductors
PCA9685
16-channel, 12-bit PWM Fm+ I2C-bus LED controller
[1]
Writes to PRE_SCALE register are blocked when SLEEP bit is logic 0 (MODE 1).
[2]
Reserved. Writes to this register may cause unpredictable results.
Remark: Auto Increment past register 69 will point to MODE1 register (register 0).
Auto Increment also works from register 250 to register 254, then rolls over to register 0.
62
3E
0
0
1
1
1
1
1
0
LED14_ON_L
read/write
LED14 output and
brightness control byte 0
63
3F
0
0
1
1
1
1
1
1
LED14_ON_H
read/write
LED14 output and
brightness control byte 1
64
40
0
1
0
0
0
0
0
0
LED14_OFF_L
read/write
LED14 output and
brightness control byte 2
65
41
0
1
0
0
0
0
0
1
LED14_OFF_H
read/write
LED14 output and
brightness control byte 3
66
42
0
1
0
0
0
0
1
0
LED15_ON_L
read/write
LED15 output and
brightness control byte 0
67
43
0
1
0
0
0
0
1
1
LED15_ON_H
read/write
LED15 output and
brightness control byte 1
68
44
0
1
0
0
0
1
0
0
LED15_OFF_L
read/write
LED15 output and
brightness control byte 2
69
45
0
1
0
0
0
1
0
1
LED15_OFF_H
read/write
LED15 output and
brightness control byte 3
...
reserved for future use
250
FA
1
1
1
1
1
0
1
0
ALL_LED_ON_L
write/read
zero
load all the LEDn_ON
registers, byte 0
251
FB
1
1
1
1
1
0
1
1
ALL_LED_ON_H
write/read
zero
load all the LEDn_ON
registers, byte 1
252
FC
1
1
1
1
1
1
0
0
ALL_LED_OFF_L
write/read
zero
load all the LEDn_OFF
registers, byte 0
253
FD
1
1
1
1
1
1
0
1
ALL_LED_OFF_H
write/read
zero
load all the LEDn_OFF
registers, byte 1
254
FE
1
1
1
1
1
1
1
0
PRE_SCALE[1]
read/write
prescaler for PWM output
frequency
255
FF
11
111
111
TestMode[2]
read/write
defines the test mode to
be entered
...
All further addresses are reserved for future use; reserved addresses will not be acknowledged.
Table 4.
Register summary …continued
Register #
(decimal)
Register #
(hex)
D7 D6 D5 D4 D3 D2 D1 D0 Name
Type
Function



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