PCA9634PW NXP Semiconductors, PCA9634PW Datasheet - Page 23

• Manufacturer Part Number: PCA9634PW
• Description: IC, LED DRIVER, RGBA, 20-TSSOP
• Manufacturer: NXP Semiconductors

Specifications of PCA9634PW

• No. Of Outputs: 8
• Output Current: 25mA
• Output Voltage: 5.5V
• Input Voltage: 2.3V To 5.5V
• Dimming Control Type: PWM
• Driver Case Style: TSSOP
• Switching Frequency: 1MHz
• Base Number: 9634
• Operating: RoHS Compliant
• Number Of Segments: 16
• Low Level Output Current: 200 mA
• High Level Output Current: 50 uA
• Operating Supply Voltage: 2.3 V to 5.5 V
• Maximum Supply Current: 10 mA
• Maximum Power Dissipation: 400 mW
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Package / Case: TSSOP-20
• Minimum Operating Temperature: - 40 C
• Led Driver Application: RGB Or RGBA LED Drivers, LED Status Information, Displays, Backlights
• Rohs Compliant: Yes
• Lead Free Status / Rohs Status: Details

NXP Semiconductors
PCA9634_6
Product data sheet
Fig 16. Read all registers using the Auto-Increment feature
Fig 17. LED All Call I
(cont.)
(cont.)
S A6
START condition
(1) In this example, several PCA9634s are used and the same sequence (A) (above) is sent to each of them.
(2) ALLCALL bit in MODE1 register is equal to 1 for this example.
(3) OCH bit in MODE2 register is equal to 1 for this example.
data from MODE2 register
A5 A4 A3 A2 A1 A0 0
data from last read byte
sequence (A)
sequence (B)
slave address
not acknowledge
acknowledge
from master
from master
S A6
START condition
S
START condition
acknowledge
2
from slave
1
C-bus address programming and LED All Call sequence example
LED All Call I
R/W
A5 A4 A3 A2 A1 A0 0
0
slave address
A
A
A
1
P
STOP
condition
1
Auto-Increment on
data from PWM0
0
Auto-Increment
on all registers
2
C address
0
1
(1)
control register
0
0
acknowledge
acknowledge
acknowledge
from slave
0
from master
1
4 devices
from the
R/W
R/W
0
0
Rev. 06 — 12 September 2008
MODE1
register
selection
0
A
A
A
0
X
X
Auto-Increment on
0
X
X
ReSTART
ALLCALLADR register
A
control register
control register
acknowledge
from slave
condition
X
X
Sr
1
0
data from
register selection
register selection
A6
ALLCALLADR
0
1
LEDOUT
A5 A4 A3 A2 A1 A0 1
0
0
acknowledge
slave address
from master
0
0
1
0
the 16 LEDs are on at the acknowledge
A
A
A
acknowledge
from slave
acknowledge
from the
4 devices
LEDOUT register (LED fully ON)
new LED All Call I
acknowledge
1
0
from slave
MODE1 register
0
1
R/W
data from
1
0
8-bit Fm+ I
A
0
1
data from MODE1 register
acknowledge
from master
1
0
2
C address
0
1
acknowledge
acknowledge
from slave
1
0
PCA9634
A
4 devices
2
from the
© NXP B.V. 2008. All rights reserved.
C-bus LED driver
(cont.)
acknowledge
(2)
X
1
condition
condition
from master
002aac145
STOP
STOP
A
A
(3)
P
P
002aac144
A
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(cont.)