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| PCA9575 Datasheet, PDF (4/38 Pages) NXP Semiconductors – 16-bit I2C-bus and SMBus, level translating, low voltage GPIO with reset and interrupt | |||
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NXP Semiconductors
5. Block diagram
PCA9575
16-bit I2C-bus and SMBus, level translating, low voltage GPIO
A0
A1
(1)
A2
A3
PCA9575
SCL
SDA
VDD
RESET
INPUT
FILTER
POWER-ON
RESET
8-bit
write pulse
read pulse
INPUT/
OUTPUT
PORTS
BANK 1
I2C-BUS/SMBus
CONTROL
8-bit
write pulse
read pulse
INPUT/
OUTPUT
PORTS
BANK 0
VDD(IO)1
P1_0
P1_1
P1_2
P1_3
P1_4
P1_5
P1_6
P1_7
VDD(IO)0
P0_0
P0_1
P0_2
P0_3
P0_4
P0_5
P0_6
P0_7
VDD
VSS
LP
INT
FILTER
Remark: All I/Os are set to inputs at power-up and RESET.
(1) PCA9575PW2 only.
Fig 1. Block diagram of PCA9575
002aad562
PCA9575_3
Product data sheet
Rev. 03 â 9 November 2009
© NXP B.V. 2009. All rights reserved.
4 of 38
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