PCA9575 datasheet(5/38 Pages) NXP

Part #	PCA9575

Description	16-bit I2C-bus and SMBus, level translating, low voltage GPIO with reset and interrupt

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Manufacturer	NXP [NXP Semiconductors]

Direct Link	http://www.nxp.com

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5 / 38 page

PCA9575_3

Product data sheet

Rev. 03 — 9 November 2009

5 of 38

NXP Semiconductors

PCA9575

16-bit I2C-bus and SMBus, level translating, low voltage GPIO

Fig 2.

Simpliﬁed schematic of the I/Os (P0_0 to P0_7, P1_0 to P1_7)

INTERRUPT

MASK

VDD(IO)

P0_0 to P0_7

P1_0 to P1_7

output port

register data

configuration

register

DQ

CK

Q

data from

shift register

write

configuration

pulse

output port

register

DQ

CK

write pulse

polarity

inversion

register

DQ

CK

data from

shift register

write polarity

pulse

input port

register

DQ

CK

read pulse

input port

register data

polarity

inversion

register data

002aad566

FF

data from

shift register

FF

Q1

Q2

VSS

to INT

BUS-HOLD

AND

PULL-UP/PULL-DOWN

CONTROL

ESD

protection

diode

100 k

Ω

VDD(IO)

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PCA9575 Datasheet(PDF) 5 Page - NXP Semiconductors

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