PCA9502 datasheet(10/25 Pages) PHILIPS

No. de pieza	PCA9502

Descripción Electrónicos	8-bit I/O expander with I2C-bus/SPI interface

PDF	25 Pages

Scroll/Zoom	100%

Fabricante Electrónico	PHILIPS [NXP Semiconductors]

Página de inicio	http://www.nxp.com

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10 / 25 page

PCA9502_3

Product data sheet

Rev. 03 — 13 October 2006

10 of 25

NXP Semiconductors

PCA9502

8-bit I/O expander with I2C-bus/SPI interface

Fig 9.

I2C-bus data formats

002aab458

DATA

SLAVE ADDRESS

master write:

DATA

data transferred

(n bytes + acknowledge)

START condition

STOP condition

acknowledge

write

DATA

SLAVE ADDRESS

master read:

DATA

data transferred

(n bytes + acknowledge)

START condition

STOP condition

acknowledge

not

acknowledge

read

DATA

SLAVE ADDRESS

combined

formats:

R/W

DATA

data transferred

(n bytes + acknowledge)

START condition

STOP condition

acknowledge

read or

write

SLAVE ADDRESS

R/W

repeated

START condition

acknowledge

read or

write

direction of transfer

may change at this point

data transferred

(n bytes + acknowledge)

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