PCA9673DK datasheet(3/33 Pages) NXP

Part #	PCA9673DK

Description	Remote 16-bit I/O expander for Fm I2C-bus with interrupt and reset

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Manufacturer	NXP [NXP Semiconductors]

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3 / 33 page

PCA9673_1

Product data sheet

Rev. 01 — 1 February 2007

3 of 33

NXP Semiconductors

PCA9673

Remote 16-bit I/O expander for Fm+ I2C-bus with interrupt and reset

5.

Block diagram

Fig 1.

Block diagram of PCA9673

Fig 2.

Simpliﬁed schematic diagram of P00 to P17

002aac300

INT

I2C-BUS

CONTROL

INTERRUPT

LOGIC

PCA9673

LP FILTER

AD0

AD1

INPUT

FILTER

SHIFT

REGISTER

SDA

SCL

16 BITS

write pulse

read pulse

POWER-ON

RESET

VDD

VSS

I/O

PORT

P00 to P07

P10 to P17

RESET

002aab631

write pulse

read pulse

D

CI

S

FF

Q

power-on reset

data from Shift Register

Itrt(pu)

100

µA

IOH

IOL

VDD

P00 to P07

P10 to P17

VSS

D

CI

S

FF

Q

data to Shift Register

to interrupt logic

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