PCA9505 datasheet(4/34 Pages) NXP

Part #	PCA9505

Description	40-bit I2C-bus I/O port with RESET, OE and INT

PDF	34 Pages

Scroll/Zoom	100%

Manufacturer	NXP [NXP Semiconductors]

Direct Link	http://www.nxp.com

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4 / 34 page

PCA9505_9506

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Product data sheet

Rev. 4 — 3 August 2010

4 of 34

NXP Semiconductors

PCA9505/06

40-bit I2C-bus I/O port with RESET, OE and INT

On power-up or RESET, all registers return to default values.

Fig 2.

Simplified schematic of IO0_0 to IO4_7

VDD

IOx_y

VSS

configuration port register data (Cx[y])

output port register data (Ox[y])

I/O configuration

data from

shift register

write configuration

pulse

output port

data from

shift register

write pulse

polarity inversion

data from

shift register

write polarity

pulse

ESD protection

diode

input port

read pulse

input port

(Ix[y])

INT

polarity

(Px[y])

002aab493

INTERRUPT

MANAGEMENT

Mx[y]

PCA9505

only

100 k

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