PCA9685BS NXP [NXP Semiconductors], PCA9685BS Datasheet - Page 32
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PCA9685BS
Manufacturer Part Number
PCA9685BS
Description
16-channel, 12-bit PWM Fm+ I2C-bus LED controller
Manufacturer
NXP [NXP Semiconductors]
Datasheet
1.PCA9685BS.pdf
(50 pages)
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
PCA9685BS,118
Manufacturer:
MITSUBISHI
Quantity:
101
NXP Semiconductors
PCA9685_2
Product data sheet
Fig 22. Read all registers using the Auto-Increment feature; AI initially clear
Fig 23. Write to ALL_LED_ON and ALL_LED_OFF registers using the Auto-Increment feature; AI initially set
Fig 24. Write to ALL_LED_OFF_H to turn OFF all PWMs
(cont.)
S
START condition
1
A5 A4 A3 A2 A1 A0 0
ALL_LED_OFF_L register
slave address
(cont.)
ReSTART
S
START condition
condition
S
START condition
data from LED15_OFF_H register
1
1
Sr
A5 A4 A3 A2 A1 A0 0
slave address
A5 A4 A3 A2 A1 A0 0
acknowledge
1
slave address
from slave
A5 A4 A3 A2 A1 A0 1
R/W
slave address
not acknowledge
A
acknowledge
from slave
A
from master
1
ALL_LED_OFF_H register
ALL_LED_ON_L register
R/W
1
R/W
control register =
1
A
A
acknowledge
from slave
R/W
control register = MODE1 register
1
A
acknowledge
from slave
STOP
condition
0
P
1
1
A
acknowledge
from slave
acknowledge
0
ALL_LED_OFF_H register
Rev. 02 — 16 July 2009
0
from slave
1
acknowledge
0
control register =
from slave
1
1
data from MODE1
0
0
1
A
0
A
1
P
STOP condition
0
16-channel, 12-bit PWM Fm+ I
acknowledge
1
ALL_LED_ON_L register
acknowledge
from slave
0
acknowledge
from slave
from master
0
0
1
A
A
A
0
AI bit set
acknowledge
ALL_LED_OFF_H register
MODE1 register
from slave
0
1
data from MODE2
0
1
A
acknowledge
X
ALL_LED_ON_H register
from slave
acknowledge
X
from master
acknowledge
from slave
X
2
A
C-bus LED controller
X
condition
002aad190
(cont.)
A
PCA9685
STOP
A
© NXP B.V. 2009. All rights reserved.
002aad188
acknowledge
P
from slave
A
002aad189
32 of 50
(cont.)