PCA9624PW,118【PDF 18/37 页】IC LED DRIVER RGBA 24-TSSOP

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NXP Semiconductors

ReSTART

PCA9624

8-bit Fm+ I 2 C-bus 100 mA 40 V LED driver

slave address

control register

condition

slave address

data from MODE1 register

S A6 A5 A4 A3 A2 A1 A0 0

A

1

0

0

0

0

0

0

0

A Sr A6 A5 A4 A3 A2 A1 A0 1

A

A (cont.)

START condition

R/W

acknowledge

Auto-Increment

on all registers

MODE1

register

selection

acknowledge

from slave

R/W

acknowledge

acknowledge

from master

from slave

Auto-Increment on

data from

from slave

data from

data from MODE2 register

data from PWM0

ALLCALLADR register

MODE1 register

(cont.)

A

acknowledge

from master

A

acknowledge

from master

A

acknowledge

from master

A (cont.)

acknowledge

from master

data from last read byte

(cont.)

A

not acknowledge

from master

P

STOP

condition

002aac151

Fig 15. Read all registers using the Auto-Increment feature

slave address (1)

control register

new LED All Call I 2 C address (2)

sequence (A) S A6 A5 A4 A3 A2 A1 A0 0

A

X

X

X

1

1

0

1

1

A

1

0

1

0

1

0

1

X

A

P

START condition

R/W

acknowledge

from slave

ALLCALLADR

register selection

Auto-Increment on

acknowledge

from slave

acknowledge

from slave

STOP

condition

the 8 LEDs are on at the acknowledge (3)

LED All Call I 2 C address

control register

LEDOUT register (LED fully ON)

sequence (B) S

1

0

1

0

1

0

1

0

A

X

X

X

0

1

0

0

0

A

0

1

0

1

0

1

0

1

A

P

START condition

R/W

acknowledge

from the

4 devices

LEDOUT

register selection acknowledge

from the

4 devices

acknowledge

from the

4 devices

STOP

condition

002aad598

(1) In this example, several PCA9624s 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.

Fig 16. LED All Call I 2 C-bus address programming and LED All Call sequence example

PCA9624

Product data sheet

All information provided in this document is subject to legal disclaimers.

Rev. 3 — 6 September 2012

? NXP B.V. 2012. All rights reserved.

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