PCA9505 View Datasheet(PDF) - NXP Semiconductors.

Part Name

Description

Manufacturer

PCA9505

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

NXP Semiconductors. 

NXP Semiconductors

PCA9505/06

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

data from

shift register

write configuration

pulse

I/O configuration

register

DQ

CK Q

data from

shift register

DQ

write pulse

CK

output port

register

read pulse

configuration port register data (Cx[y])

output port register data (Ox[y])

input port

register

D

Q

CK

100 kΩ

VDD

PCA9505

only

IOx_y

ESD protection

diode

VSS

Mx[y]

INTERRUPT

MANAGEMENT INT

input port

register data

(Ix[y])

data from

shift register

polarity inversion

register

D

Q

write polarity

pulse

CK

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

Fig 2. Simplified schematic of IO0_0 to IO4_7

polarity

register data

(Px[y])

002aab493

PCA9505_9506_3

Product data sheet

Rev. 03 — 6 June 2007

© NXP B.V. 2007. All rights reserved.

4 of 31

Share Link: