PCA9632DP2 datasheet(22/38 Pages) NXP

22 / 38 page

PCA9632_3

Product data sheet

Rev. 03 — 15 July 2008

22 of 38

NXP Semiconductors

PCA9632

4-bit Fm+ I2C-bus low power LED driver

(1) 10-pin version only.

Fig 17. Multiple writes to Individual brightness registers only using the Auto-Increment feature

A1 A0

slave address(1)

START condition

R/W

acknowledge

from slave

002aad045

PWM0 register

control register

Auto-Increment on

increment

on Individual

brightness

registers only

acknowledge

from slave

acknowledge

from slave

STOP

condition

(cont.)

PWM0

selection

PWM1 register

acknowledge

from slave

PWM2 register

acknowledge

from slave

PWM3 register

acknowledge

from slave

PWM0 register

acknowledge

from slave

PWMx register

acknowledge

from slave

(1) 10-pin version only.

Fig 18. Read all registers using the Auto-Increment feature

A1 A0 0

slave address(1)

START condition

R/W

acknowledge

from slave

002aad046

control register

Auto-Increment on

Auto-Increment

on all registers

acknowledge

from slave

(cont.)

MODE1

selection

data from MODE1 register

acknowledge

from master

ReSTART

condition

A5 A4 A3 A2 A1 A0 1

slave address

R/W

acknowledge

from slave

data from MODE2 register

acknowledge

from master

data from PWM0

acknowledge

from master

data from

ALLCALLADR register

acknowledge

from master

data from

MODE1 register

acknowledge

from master

(cont.)

data from last read byte

not acknowledge

from master

STOP

condition

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